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EOP-D68-003-002-08E （様式 EO-H0523-07） INSTRUCTION MANUAL OZONE MONITOR MODEL EG-700EⅣ Published on June 18, 2012 EBARA JITSUGYO CO., LTD. MEASURING INSTRUMENT AND MEDICAL DIVISION MEASURING INSTRUMENT SALES DEPARTMENT EAST JAPAN SALES BRANCH : 3-12, Kurigi 2-Chome, Asao-ku, Kawasaki-shi, Kanagawa, 215-0033 Japan Tel. +81-44-981-0560 Fax. +81-44-981-0561 E-mail [email protected] WEST JAPAN SALES BRANCH : 2-13, Hiranocho 3-Chome, Chuo-ku, Osaka-shi, Osaka, 541-0046 Japan Tel. +81-6-6231-3528 Fax. +81-6-6231-2929 E-mail [email protected] TECHNICAL ENGINEERING DEPARTMENT 3-12, Kurigi 2-Chome, Asao-ku, Kawasaki-shi, Kanagawa, 215-0033 Japan Tel. +81-44-981-0560 Fax. +81-44-981-0561 E-mail [email protected] E.J. OZONE PRODUCTS EOP-D68-003-002-08E Introduction This time, we are pleased that you have purchased our ozone monitor, Model EG-700EⅣ made by Ebara Jitsugyo Co., Ltd. This instruction manual provides the latest information in order to install and to use the monitor correctly and safety, so that their important messages are described in this manual. And then, regarding precautions in the matter of safety, refer to the following marks and their descriptions, and also see giving attention to 'Dangerous Characteristics for Ozone Treatment' and 'Caution items when put the monitor (densitometer) in use'. Important Safety Message Mark Description DANGER DANGER indicates an imminently hazardous situation which, WARNING WARNING indicates a potentially hazardous situation which, CAUTION CAUTION indicates a potentially hazardous situation which, if not avoided, will result in death or serious injury. if not avoided, could result in death or serious injury. if not avoided, may result in minor or moderate injury. Note 1: The serious injury indicates the injury such as sight loss, hurt, burn (hot or cold), electrical shock, fracture and toxic reaction which leaves after-effects or requires hospitalization or long-term outpatient treatment for cure. Note 2: The minor or moderate injury indicates the injury such as burn and electrical shock which does not require hospitalization or long-term outpatient treatment for cure, and the material damage indicates the damage which may lead to property damage or product failure. E.J. OZONE PRODUCTS 1 EOP-D68-003-002-08E DANGER Dangerous Characteristics for Ozone Treatment Ozone has powerful oxidation effect, and it is used for many kinds of substance by the reaction, such as Oxidation/Dissolution, Sterilization and etc, but it is also informed that Ozone has 'Toxicity' for human bodies. Therefore, any exposure by Ozone should be free from the leakage on the piping connections for Ozone sampling system and/or the wetted parts, and also the related equipments. The following table shows the effects, for Ozone concentration to human bodies. Biological influences caused by ozone Ozone concentration [ppm] Influences Sensible odor (with the sense of smell becoming gradually accustomed to the smell) 0.1 Strong odor stimulant to the nose and throat. 0.2 ~ 0.5 Eyesight weakens by 3 to 6 hour's exposure. 0.5 Apparently stimulant to the upper respiratory tract. Exposure for 2 hours presents a headache, a pain in the chest, and thirsty 1 ~ 2 at the upper respiratory tract and coughing. Repeatable exposures will lead to chronic toxicities. 5 ~ 10 Increase of pulses and pulmonary edema will be caused. 15 ~ 20 Small animals will die within 2 hours. 50 Life of man will be jeopardized in one hour. 'Report on Ozone Processing' by Japan Water Works Association, August 1984, P. 40 0.01 ~ 0.02 Threshold limit value: Japan : 0.1 [ppm] (recommendation by Japan Society for Occupational Health)(2010 - 2011) ＊ USA : 0.1 [ppm] TLV of TWA by ACGIH (1993 - 1994) ＊ TLV : Threshold Limit Value TWA : Time Weighted Average Concentration ACGIH : American Conference of Governmental Industrial Hygienists E.J. OZONE PRODUCTS 2 EOP-D68-003-002-08E DANGER This instrument is not constructed by standard of explosion proof. If you used the monitor in the place where combustible gas or inflammable gas is floating in the environment, this can cause explosion. Do not use the monitor surely in these places. WARNING  If there is ozone smell, confirm whether the ozone monitor has an enclosure crack, piping damage and slackness on joints or not after when power switch turned off.  High voltage power supply (Steady state: about 200 V AC and Starting state: about 1000 V AC in a moment) for the mercury lamp is built in the monitor, so that you may have an electrical shock when perform adjustment and repairing inside of the monitor. Do perform it with specialist.  If you opened the front panel under when an electric power is supplied, you may have a chance which can receive UV ray from the mercury lamp with burning light inside. Use protective gear such as UV protective glasses and avoid looking at UV ray directly.  When replacing the parts, do it after the power source shut down. E.J. OZONE PRODUCTS 3 EOP-D68-003-002-08E CAUTION Caution items when put the monitor in use  Do not affect a shock and/or vibration to this monitor, this instrument is a precise equipment.  Regarding accident and trouble that had happened as a result of remodeling or modifying the monitor, we cannot take the responsibility, even if it is in the warranty term.  Sealing materials such as joint and packing etc. which are used in the monitor, are not intended to be effective permanently. These materials are deteriorated by ozone gas and other material and this may cause in ozone gas leakage. Perform the increased tightening of the joints and check and replace these materials regularly (every 1~2 years) by our service man.  When a sample gas measurement is finished, it should be discharged after decomposing ozone.  Never introduce a sample which has high pressure than its specification limit into the monitor. This would cause a leak or trouble. To confirm its specification and also to perform routine inspection are needed.  In case of removing the monitor from the related device when maintenance and etc, confirm that there is not the residual ozone (the indicating value of the ozone concentration is 0) and perform the works after when the power supply shut down. Still more, even for replacing the parts, perform this works after turning off the power supply surely.  If the sample gas contains materials other than ozone, such as hydrogen fluoride and moisture, the inner part of the monitor which is exposed to gas may be eroded, damaged, clouded or rusted. In case that the monitor had trouble and it becomes impossible to measure ozone by influence of another material, take care that the monitor will not be guaranteed, even if it is in the warranty term.  If contamination from output of the monitor is exhausted and it has a problem, to attach a filter or to do the piping and/or suitable management should be performed.  Be sure to fix the monitor, even if it is put on the floor.  Be sure to take a caution when working with the monitor under power supplying or soon after when power turned off, because surface of the part in the inside (including parts installed on PCB) is in high temperature.  There is a life to the parts used inside of the monitor. If they have elapsed since the replacing term limit, this matter may be related to cause of trouble on the other parts. Do perform its maintenance periodically.  The low-pressure mercury lamp as consumable part contains harmful component to the humans, so that the used lamp should be scrapped in accordance with your local regulation.  Do not drop the low-pressure mercury lamp, do not throw a material against it (affected with weight) and do not add with unreasonable stress and flawed, because it is a glass product.  Our EG-700EⅢ Ozone Monitor is another model of ozone monitor which has a very similar appearance to the model EG-700EⅣ, but it is used for measuring a low-concentration ozone gas. These monitors use different component parts, therefore make sure to handle the monitor appropriately checking the product name plate. E.J. OZONE PRODUCTS 4 EOP-D68-003-002-08E Contents Introduction ............................................................................................................................................... 1 1 General description............................................................................................................................ 7 2 Measuring principle ........................................................................................................................... 7 3 Basic specifications............................................................................................................................. 8 4 Description of each portion and functions........................................................................................10 4.1 Mode switch and each setting ......................................................................................................12 5 Functions ...........................................................................................................................................14 5.1 Alarm............................................................................................................................................14 5.2 Monitor error ...............................................................................................................................14 5.3 Test mode......................................................................................................................................15 5.4 Panel lock......................................................................................................................................15 5.5 Offset ............................................................................................................................................15 6 Option................................................................................................................................................16 6.1 AC Power adaptor........................................................................................................................16 7 Requirement of installation and how to install.................................................................................16 7.1 Requirements of installation ........................................................................................................16 7.2 How to install the monitor............................................................................................................17 7.3 Wiring method..............................................................................................................................20 7.4 Piping method...............................................................................................................................21 8 Measuring procedure........................................................................................................................22 8.1 Preparation before the measurement ..........................................................................................22 8.2 Measurement ................................................................................................................................23 9 Span calibration ................................................................................................................................23 10 Maintenance and inspection ...........................................................................................................24 10.1 Daily inspection ..........................................................................................................................24 10.2 Consumable parts.......................................................................................................................25 10.3 Replacing the consumable parts ................................................................................................26 10.4 Trouble shooting.........................................................................................................................33 11 Model and code ...............................................................................................................................35 12 Warranty .........................................................................................................................................36 E.J. OZONE PRODUCTS 5 EOP-D68-003-002-08E Illustrations and Tables Figure- 1 Figure- 2 Figure- 3 Figure- 4 Figure- 5 Figure- 6 Figure- 7 Figure- 8 Figure- 9 Figure- 10 Figure- 11 Figure- 12 Figure- 13 Figure- 14 Figure- 15 Figure- 16 Figure- 17 Figure- 18 Figure- 19 Figure- 20 Figure- 21 Figure- 22 Table 1 Table 2 Table 3 Table 4 Logic diagram.................................................................................................................. 7 Outside appearance ........................................................................................................10 Panel switches.................................................................................................................12 Mounting pitch ...............................................................................................................18 Maintenance space .........................................................................................................19 Terminal block for detailed ............................................................................................20 Terminal block for connecting .......................................................................................21 Attaching the tube ..........................................................................................................22 Tightening/loosening the cap nut ...................................................................................22 Attaching the filter .......................................................................................................22 Arrangement of main parts ..........................................................................................27 Attaching the tube ........................................................................................................27 Removing the tube........................................................................................................27 Removing the lamp cover.............................................................................................28 Removing the lamp.......................................................................................................28 Position of trimmer on the PCB ...................................................................................30 Sampling pump.............................................................................................................30 3-ways solenoid valve....................................................................................................31 Zero gas generator........................................................................................................32 Ozone destructor ..........................................................................................................32 Outline of Model EG-700EⅣ ozone monitor..............................................................37 Flow line diagram of Model EG-700EⅣ ozone monitor ............................................38 Inspection item ..................................................................................................................24 Consumable parts list ........................................................................................................25 Trouble shooting ................................................................................................................33 Countermeasure chart for error .......................................................................................34 E.J. OZONE PRODUCTS 6 EOP-D68-003-002-08E 1 General description The EG-700EⅣ Ozone Monitor (referred to as monitor throughout this manual) is a small, light-weight ozone monitor which enables wide range measurement of ozone concentration using UV absorption method. You can select a measuring range from 0 ~ 20ppm, 0 ~ 50ppm, 0 ~ 100ppm and 0 ~ 200ppm. This monitor regularly introduces zero gas and performs zero point correction to provide stable measurement of low-concentration ozone gas. Simply connecting a tube to the connection point “SAM” and turning on the power will start measurement, activating the built-in pump which sucks in a sample gas. 2 Measuring principle This monitor is a UV absorption type ozone monitor which can detect and measure quantity of absorption of UV rays by ozone in the sample gas (ozone leakage) introduced into the detector. A low-pressure mercury lamp (emission wavelength 253.7 nm) is used for the light source. As the quantum of light absorbed by ozone existing within the optical path 'T' obeys the Lambert-Beer's Law, concentration of ozone can be measured as follows. C= A  Io  × log  αT  Ix  where : C α T Io Ix A = Ozone concentration = Specific absorption coefficient = Path length of cell = Light intensity through the sample free of Ozone = Light intensity passed through sample Ozone = Constant lamp senso r １ ozone Ｔ se nsor ２ Figure- 1 E.J. OZONE PRODUCTS Logic diagram 7 EOP-D68-003-002-08E 3 Basic specifications Model & Product name : EG-700EⅣ Ozone monitor Measuring principle : UV absorption method Service : Ozone gas Measuring ranges : 0 ~ 20, 0 ~ 50, 0 ~ 100 and 0 ~ 200 (unit ppm) : Deterioration or contamination of the material which is caused by ozone is not covered by the warranty. Measuring method : interval measurement (20 seconds cycle) Sampling method : by an internal sucking pump Flow rate : over than 0.6 L/min Normal pressure (inlet/outlet) : within±1.47 kPa (G) Span drift : within±1 % FS/month (* note 2) Zero drift : within±3 % FS/month (* note 2) Linearity : within±1 % FS (* note 2) Repeatability : less than 1 % FS (* note 2) Process wetting parts : Includes aluminum, quartz, FEP, fluorine rubber, SUS304/316, PVC, polybutylene terephthalate*, polyamide resin*, etc. (material used for the filter housing: PVDF) Note : Materials with (*) mark are used in process line not contained with ozone gas. If another material was contained in the sample gas excepting one of ozone, it may corrode or stain inside of the monitor's process wetted portion with white color. In case that the monitor has a failure trouble and also becomes to be unable to measure the concentration, we can not have a duty to pay the warranty. Piping connection : piping diameter OD 6 mm × ID 4 mm, union tube fitting for panel Display : in 3 digits as follows 20 ppm: 0.0 ~ 20.0 50 ppm: 0.0 ~ 50.0 100 ppm: 0.0 ~ 100.0 200 ppm: 0 ~ 200 Span adjustment : by digital setting (0.000 ~ 2.000) Self-diagnostic Function : detecting and displaying abnormality of light intensity, computation in the circuit and flow-rate etc. Environment : 5 ~ 40 ℃, 80% RH below (not condensed) Note E.J. OZONE PRODUCTS 8 (* note 1) EOP-D68-003-002-08E Power supply : 24±4 V DC (approx. 0.65 A in normal operation, approx. 0.9 A at maximum, approx. 2 A at power-on) * Maximum power consumption: 24 VA Weight : 5 kgf (typical) Monitor output : Contact output (rating: 100 V AC, 1A and form 1a or 1b) (* note 3) (1) monitor error ････････When monitor operation is abnormal (regarding lamp, sample flow by pump), this will enable its output. (2) concentration alarm ･･ 2 system outputs Analog output : ・Voltage output ･････････0 ~ 1 V DC or 0 ~ 10 V DC ・Current output ････････4 ~ 20 mA DC (insulated output) (* note 4) (* note 5) Outside dimension : 270 W × 200 H × 110 D mm (* note 6) Installation pitch : See attached Dwg. of Fig.-21 (* note 7) Accessories : Withstand rush current type Fuse, 250 V 1 A approved by UL standard ･･･････ 1 pc Filter (with joint) ･･････････････････････ 1 pc Supplementary information * note 1 : Select one when you order. * note 2 : This value is based on the condition when ambient temperature variation is less than ±3 ℃ and when one of sample gas temperature is also less than ±3 ℃. * note 3 : Relay contact form is set when shipping, so that it should be specified when you order. * note 4 : Allowable load resistance is over than 10 kΩ. Select the voltage range which one (0 ~ 1 V DC or 0 ~ 10 V DC) is better when you order. * note 5 : Allowable load resistance is less than 750 Ω. * note 6 : The protruding portions and mounting legs are not included. * note 7 : Even if the monitor is put on the floor, it should be fixed with the tightening screws. NOTICE: Our EG-700EⅢ Ozone Monitor is another model of ozone monitor which has a very similar appearance to the model EG-700EⅣ, but it is used for measuring a low-concentration ozone gas. These monitors use different component parts, therefore make sure to handle the monitor appropriately checking the product name plate. E.J. OZONE PRODUCTS 9 EOP-D68-003-002-08E 4 Description of each portion and functions Figure- 2 Outside appearance ① Display Measured ozone concentration is shown on the display. For details, please refer item 4.1 "Mode switch and each setting". ② Status LED (STATUS) This LED is turning on and off for 10 minutes as warming-up operation after when electric power turned on. After that the monitor is in normal operation, you can perform measurement. ~ In order to measure in steady state ~ 10 minutes for warming-up operation is the minimum required time till a low-pressure mercury lamp in the ozone monitor, Model EG-700EⅣ becomes to be in steady state. If required to be more in steady state concerning to have measuring & detecting, it should be started after three hours over from when power was turned on. In case of taking in an output of this device to the sequencer, do perform it after when the warming- up operation was done for one more hour. Still more, when the monitor is not used for long term, it is recommended that the monitor is always operated as it is, excepting the condition. ③ Measuring LED (MES.) When the monitor is in measuring condition, this LED is lighting up (green). Condition of measuring the ozone is so called as the Measuring Mode. ④ Setting LED (SET) While Alarm setting or Signal test of the monitor is performing, this LED is lightening up (orange). Condition set at each position, is called as the Setting Mode. ⑤ MODE button This is button for changing Measuring mode or Setting mode, and it will exchange measuring mode (MES) and setting mode (SET) every pushing one time. Moreover, when in setting mode, it is used when the entry value should be canceled and it is returned to the original value. E.J. OZONE PRODUCTS 10 EOP-D68-003-002-08E ⑥ ENTER button This is used when confirm the setting value at setting mode, and store the data of its value in the monitor. ⑦ Cross located buttons The four buttons are used in order to make an entry of numerical values such as alarm setting value of the setting items. ⑧ Fixing screw used for the front door When maintenance, the front door can be opened with the screw for checking and replacing the parts inside of the monitor. ⑨ Power switch (POWER) This is used to turn on or off the power supply. ⑩ Fuse holder (FUSE) A fuse having rating of 250 V AC, 1 A (withstand rush current type and approved by UL standard) is equipped in the monitor. When replacing the fuse, make sure to replace it after power turned off. ⑪ Terminal block for power wiring (TB1) Power supply of 24 V DC is connected to this terminal. ⑫ Terminal block for signal wiring (TB2) This is the terminal block connected with wires for alarm, error output, analog output and etc. ⑬ Outlet for sample (OUT) This is outlet of sample gas after measuring it. ⑭ Inlet for sample (SAM) This inlet will introduce the sample gas here which would like to measure. When operate the monitor, use it after attaching an accessory filter on the inlet. ⑮ Connector for interface cable (I/F) This is not used. E.J. OZONE PRODUCTS 11 EOP-D68-003-002-08E 4.1 Mode switch and each setting status LED (STATUS) measuring LED(MES.) cross located buttons setting LED(SET) ST AT US M ES. SE T M OD E p pm EN TE R MES ./ SET E G- 700 ENTER button display MODE button Figure- 3 Panel switches Function of this equipment consists of two modes of measuring and setting, regarding mode change, to push a Mode button every one time will exchange Measure・Setting. The value on the indicator can be distinguished at a glance which mode is selected, because measuring LED (green) or setting LED (orange) is turned on. measuring mode exchanged by MODE button setting mode ・indication of sensor light quantity measurement of ozone concentration ・alarm setting ・setting for span calibration ratio and etc. (1) Measuring mode In this time, measuring mode LED is turned on (green) and this equipment is in measuring ozone concentration. The concentration is shown on the indicator and analog output proposed to ozone concentration is transmitted from the signal terminal block. The equipment is automatically exchanged from port of sample gas to port of zero gas every 10 seconds by operation of the solenoid valve, so that measured ozone concentration is renewed every 20 seconds. E.J. OZONE PRODUCTS 12 EOP-D68-003-002-08E (2) Setting mode Items of Setting & Confirming are the following nine (9) kinds. sensor 1 light quantity ENTER The present value of light quantity of sensor 1 is shown. up-down button sensor 2 light quantity ENTER The present value of light quantity of sensor 2 is shown. up-down button Alarm 1 setting The present setting value for alarm 1 is shown. When measured ozone value has increased over than the setting value, AL1 relay will make its contact form to one of make (a contact). Using up/down and right/left buttons, change the value. Alarm1 and 2 will independently operate each other. up-down button Alarm 2 setting ENTER ENTER setting storage up-down button offset setting MODE cancel The present setting value for alarm 2 is shown. When measured ozone value has increased over than the setting value, AL2 relay will make its contact form to one of make (a contact). Using up/down and right/left buttons, change the value. Alarm1 and 2 will independently operate. The present offset value is shown on the indication. If equipment is required to calibrate zero in the interferance gas or ozone gas in air, it makes to enter correction quantity as numerical value. Available correction range is -9.99～+9.99． up-down button ratio setting for span calibration This shows the present span calibration ratio. The ratio can be adjusted in range of 0.000～2.000. (To change is normaly not required.) up-down button test for analog signal ENTER up-down button This equipment can supply an imitation output of analog signal. By using the up-down button, you can transmit the output from 0 (display: 0.00) to 100 (display: 1.00) ％ with notch of 25％. Both voltage and current outputs are supplied from the terminal block 2(TB2). test of solenoid valve ENTER up-down button You can test the solenoid valve by this function. By using up-down button, when indication is S, this equipment will suck sample gas, and also when P indication, the above is changed to gas through zero gas generator. test for alarm and error ENTER In this mode you can test imitation output for alarm and error. By pushing the following button, you can test and confirm each contact of the relay. On the occasion of this test, if the indication was changed from 0 to 1, it is shown that the equipment is in operation. alarm 1 : left side button (first figure from left side on the indicator) alarm 2 : right side button (second figure from left side on the indicator error : up side button ( fourth figure from left side on the indicator) E.J. OZONE PRODUCTS 13 EOP-D68-003-002-08E 5 Functions 5.1 Alarm The EG-700EⅣ Ozone Monitor has two contact (alarm) outputs. These outputs are contacts without the supplying voltage (relay contacts) and they have the contact rating of 100 V AC, 1A. If specified the relay contact form when you order, you can choice the contact form whether 'a' or 'b' type. If there is not specifying the contact form, the equipment is shipped as one of 'a' contact form type. 5.2 Monitor error This function will judge the condition under abnormality inside of the monitor or also one of outside signal, and perform to generate error signal and to display error. Outputs of error signal are the contacts without voltage (relay contact) and they have the contact rating of 100 V AC, 1A. Error indications are constructed from the following eight (8) kinds. ① E 0 (error 0) When measured value had exceeded this measuring range, the error indication is appeared and its signal will generate as a relay contact. Still more, the measuring operation is continuously performed and it can return to normal condition when the exceeded value has decreased within the range. ② E 1 (error 1) This function will fulfill the indication and its output, when light quantity of the sensor 1 had decrease, but one of the sensor 2 is under normal condition. Still more, when the light quantity has returned with in the normal range, this measuring operation will automatically return. ③ E 2 (error 2) When light quantity of the sensor 1 is under normal condition and light quantity of the sensor 2 had decreased, this function will fulfill this indication and its output. Still more, if the light quantity has returned with in the normal range, this measuring operation will automatically return under normal condition. ④ E 3 (error 3) When both light quantities of the sensor 1 and 2 have decreased, this function is fulfilled. Still more, measuring operation will continuously performed. And when light quantities of the both sensors have returned within the normal range, the operation is transferred to warmingup operation mode and returned to measuring mode. ⑤ E 4 (error 4) This output will generate when the internal setting switches had not set correctly. ⑥ E 5 (error 5) Regarding this indication, the output will not fulfill. ⑦ E 6 (error 6) When internal circuit of the monitor has abnormal condition, this output will be generated. ⑧ E 7 (error 7) When flow-rate of the sample gas had decreased than the ruled value by failure of the pump or damage of connecting tube etc, or when a back pressure had added on the outlet of the monitor and flow current was stopped, this output will be generated. If the flow-rate has returned normal quantity, this measuring operation will automatically return. E.J. OZONE PRODUCTS 14 EOP-D68-003-002-08E 5.3 Test mode The three (3) kind tests shown in the following are applicable. ① Analog Test mode (TE 1) Regarding analog output (voltage and current), you are possible to make and transmit the imitation signal from 0 to 100% with notch of 25%. Use the signal when connect the recorder and etc. ② Operation mode of the solenoid valve (TE 2) You can change state of the built-in valve with hand operation. ③ Imitation output mode for alarm and error (TE 3) It is possible to generate the imitation outputs for alarm (1&2) and error. Use them when confirmation of the signal connections. 5.4 Panel lock It is possible to lock the panel in order to prevent miss operation of a panel switch. In measurement mode, to push low side of the cross located button for long time will allow the monitor display the following indication and to lock the panel switch. If you will push again low side of the button for long time, it will cancel the panel lock. 5.5 Offset You can easily set offset of zero point with panel switch on the equipment. Use this switch when there is an influence gas in the sample. ① If pushed MODE button, the monitor will change the mode to be one of Setting. At this time, Setting LED will turned on (SET orange). ② To push a button of upper or lower side of the cross located buttons several times, you can indicate [OFF] on the display. ③ After pushing ENTER button, change the numerical value with upper and lower sides of the cross located buttons and also move the decimal point with right and left side button. At this time, the Status LED will be turned on by pushing either the upper or lower button for a long time. This means that minus numerical value is shown on the indication, so if the above buttons was pushed for a long time again, it will return to be one of plus. That is to say, ＋/－ range of the desired numeral value is decided. Example : When the indication value is 11.3 ppm, but you would like to change it to 11.3 ppm as zero point. Offset input value : －11.3 (Status LED turned on, the indication will show as 11.3) ④ If pushed the ENTER button, the numerical value is stored. ⑤ By pushing the Mode button, mode of the monitor will change it to measuring mode. And then, confirm the ozone concentration. Precaution : The offset is not reflected soon after changing the measuring mode. It may take about 3 minutes till the offset value had reflected completely. E.J. OZONE PRODUCTS 15 EOP-D68-003-002-08E 6 Option 6.1 AC Power adaptor Though the power supply voltage of this ozone monitor, Model EG-700EⅣ is 24±4 V DC, the monitor can be operated with AC power supply by using the optional power adaptor. Choose the adaptor and the power cable corresponded with the following table. AC adaptor for common use specification input：100～240 V ac、50/60 Hz output：24 V dc、60W form of input connector: Inlet type (3P) AC power cable for Japanese use AC power cable for abroad use withstand voltage： 125 V ac withstand voltage： 250 V ac type A for domestic use type C for abroad use (earth terminal attached) 0V + 24V external appearance (form of power connector) codes of goods (when ordered a single unit ) codes of goods (set) EN047A EK041A: EK040B: This cable can use for the outside This cable cannot use out of Japan. countries only. ｆｏｒ domestic use： BZ293A (EN047A＋EK040B) note： This equipment cannot use in the outside countries. for abroad use： BZ294A (EN047A＋EK041A) 　note： This equipment cannot use in Japan . Note (1): Regarding another voltage or connection type in the above, please consult with us about this problem and/or purchase them on the market. Note (2): The above dimension unit is mm. 7 Requirement of installation and how to install 7.1 Requirements of installation In order to protect the monitor from any damage and to ensure stable operation, installation at places as shown below should be avoided. (1) Dusty place or any place where such corrosive gas as hydrogen sulfide gas, sulfurous gas, or halogen gas is floating in the atmosphere. (2) A place having characteristic of high temperatures, high humidity or a place of radical temperature changes. (3) A place with characteristic of strong vibrations or heavy intermittent vibrations. (4) Places under direct sun shine. (5) A place close to the source of generation of a strong electromagnetic field, electric field or a high frequency. (6) A place lacking a sufficient space for maintenance and/or inspection of the monitor. (7) Process plant where explosive gas may be made up in the environment. E.J. OZONE PRODUCTS 16 EOP-D68-003-002-08E DANGER This instrument is not constructed by standard of explosion proof. If you used the monitor in the place where combustible gas or inflammable gas is floating in the environment, this can cause explosion. Do not use the monitor surely in these places. 7.2 How to install the monitor The monitor, Model EG-700EⅣ can be used as the floor or wall installation. (1) Wall installation Fix the monitor at where piping, wiring and maintenance can be easily done. The mounting pitch is 200 mm×245 mm and their holes are ones for M4 screw use. Regarding mounting direction, install the monitor so that the bottom face becomes to be horizontal, according to the following illustration of Fig. -4. (2) Floor installation Fix the monitor at where piping, wiring and maintenance can easily be performed. The mounting pitch is 315 mm×48 mm and their hole sizes are ones for M4 screw use. In case of the floor mounting, the monitor should be used as the fixed device. CAUTION For easier maintenance, parts are attached to the inner side of the front panel. When the front panel is opened, the instrument may topple under the weight of the front panel. Fix the monitor on the floor even if it is one of the floor installation. E.J. OZONE PRODUCTS 17 EOP-D68-003-002-08E expanded for detail in case of wall installation in case of floor installation unit: mm Figure- 4 E.J. OZONE PRODUCTS Mounting pitch 18 EOP-D68-003-002-08E (3) Maintenance space Prepare the maintenance space as it is the following drawing of Fig.-5 when installing the monitor, but a minimum bending radian on the piping is not in consideration for the dimension in the Fig. -5, and this is only showing the minimum space for doing the maintenance when the monitor is fixed. The front and right side of the monitor are used for doing the maintenance. in case of wall installation in case of floor installation unit: mm Figure- 5 Maintenance space E.J. OZONE PRODUCTS 19 EOP-D68-003-002-08E 7.3 Wiring method Precaution: Perform the wiring after confirmation that the electric power is surely not supplied to the wire. And then, if the wiring is connected by mistake, it can cause in damage to the equipment and also is much risky. (1) Connecting the electric power Open the door at right side and connect surely the power cable of 24 ±4 V DC to the specified power terminal block (TB1) by using the solderless terminal (width: less than 8.2 mm). The screws on the terminal block should be M4 size screw. 8.2 Give care to polarity of the power cable so as not to have a mistake. The mistake may cause in failure or fire trouble. Ｍ４ TB1 ① ＋24 V (LMT) To connect ＋24 V line to this terminals of ＋24 V (LMT), the electric power is turned off by limit switch when the front + 24 V + 24 V 0V FG door is open, even if the power switch is on-state. If you shut ( LM T) the front door, it is switched on again. s et sc rew （ Ｍ ３ ） ② ＋24 V The electric power is always supplied without relation to Figure- 6 Terminal block for detailed open and shut the front door. Connect ＋24 V line to the power cable location terminal. After a suitable terminal position is selected from the two (2) kinds above according your application rule, and connect it correctly. ③ 0V This terminal is used for connecting zero (0) Volt line on the wire of above terminal ①or②. ④ FG FG is a flame ground terminal. To connect the flame to the ground with wire, withstand noise characteristics of the monitor will increase and also will prevent electric shock so as not to give it to human body. Be sure to perform its grounding. WARNING If the front door was open under condition of power supplying, UV ray from a mercury lamp which is lighting may sometimes have a chance of its leaking. When working with the monitor, the anti UV ray glasses should be used. E.J. OZONE PRODUCTS 20 EOP-D68-003-002-08E (2) Connecting the signal output Connect the signal wire with the solderless terminal for M3 (width: less than 6.4 mm) to the terminal block (TB2) at right side of the monitor. In case that there are polarity mistake and/or imperfect connection, it may cause in failure trouble. ① AL1 and AL2 (alarm) output terminals se t sc re w 6.4 When measured ozone concentration has increased （Ｍ３） than its setting value, a contact of the relay will T B2 change it to one of the make form (in case of 'a' form contact) and if becomes to be less than the value, its contact form will return to one of break. AL1 AL2 ERR Vo+ Vo- Io+ IoRegarding setting of alarm values, they can be done with panel switch on the front door. And then, AL1 Figure- 7 Terminal block for connecting and AL2 will independently work each other. the signals location Contact rating is 100 V AC, 1A, but contact form 'a' or 'b' can be selected when order of the monitor. Use 18 AWG (or larger) wire. The length should be shorter than 30 m. ② ERR (error) output terminals When error was detected by self diagnostics function of the monitor, the relay contact will energize (when 'a' form contact). For connecting detail of Error output, refer to "Monitor error", item 5.2. Contact rating is 100 V AC, 1A, but contact form 'a' or 'b' can be selected when order of the monitor. * Use 18 AWG (or larger) wire. The length should be shorter than 30 m. ③ Vo＋and Vo－(analog voltage) output terminals Voltage output (0~1V DC or 0~10V DC) will generate and transmit from these terminals of Vo＋and Vo－, but allowable load resistance which can be connect to outside is over than 10 kΩ. * Use 26 AWG (or larger) duplex (multi-core) wire. Connect the shield wire to FG on the power terminal block (TB1) or a terminal at the same potential (100 Ω or lower). The wire length should be shorter than 30 m. ④ Io＋and Io－(analog current) output terminals Current output of 4~20 mA DC (insulated) will generate and transmit from these terminals of Io＋and Io－, but allowable load resistance is less than 750Ω. * Use 26 AWG (or larger) duplex (multi-core) wire. Connect the shield wire to FG on the power terminal block (TB1) or a terminal at the same potential (100 Ω or lower). The wire length should be shorter than 30 m. 7.4 Piping method The tube (recommended one, PTFE) should be connected to a portion of the sample inlet 'SAM '. When used a tube having not withstand ozone characteristics, the measured concentration value may sometimes be shown less than the correct value, because the ozone in the tube is decomposed itself. And then, the tube size which can be used is OD 6 mm and ID 4 mm. The allowable tube length is around 10 m maximum. E.J. OZONE PRODUCTS 21 EOP-D68-003-002-08E ① Attaching the tube Slip the cap nut on the tube and insert the tube into the bamboo-shape joint until it is well seated. Then tighten the hexagon cap nut on the tube using a spanner until it comes into contact with the metal surface of the joint. Precaution when attaching the tube Perform the following items: ・An attached face of the tube should be cut perpendicularly. ・The tube has not a flaw about the outside surface and was not crushed down. ・When the tube is used once, it should be used after cutting its pointed end. If not performed this cutting, it may cause in trouble of the leakage. Figure- 8 Attaching the tube ② Removing the tube Remove the cap nut using a spanner and then remove the tube. When removing the tube, it should be performed after when power switch is turned off Figure- 9 ③ Attaching the filter Tightening/loosening the cap nut If the inside of the tube is contaminated, ozone is decomposed and measurement cannot be performed correctly. Attach the filter so that the arrow on the filter indicates the direction of gas flow. PTFE tube etc. Do not apply tension, twisting or bending force to the filter or joint. It may damage the joint. Make sure to attach the provided filter to the end of the straight type joint sampling tube. (When sucking a gas from a place away filter from the monitor, attach the filter to the end of the tube.) Precaution item: If the filter is used in environment place where the much dustfloating, it will become to be choked with the dust for short term, so that the monitor may not have a chance of sucking Figure- 10 the measuring gas. Regarding the filter, perform the routine maintenance and check it whether measuring gas is sucking or not. 8 Measuring procedure 8.1 Preparation before the measurement straight type joint Attaching the filter (1) Turn on the power switch under condition that the front door is closed (Be sure to close it as the opened door is dangerous). E.J. OZONE PRODUCTS 22 EOP-D68-003-002-08E (2) The display will indicate 'UP10 ', and then the monitor begins to operate warming-up operation of 10 minutes flickering Status LED. When the monitor is operating, the indication of 'UP10 ', will start changing it till 'UP00 ' for 10 minutes operation, reducing one by one, every one (1) minute and the warming-up operation will finish at the 'UP00 '. (3) After warming-up operation Status LED will turn off. ~ In order to measure in steady state ~ 10 minutes for above warming-up operation is the minimum required time in order to allow the monitor to make a steady condition of the low-pressure mercury lamp in the ozone monitor, Model EG-700EⅣ. If you would like to measure and to detect ozone concentration under more stable state condition, you have to measure the concentration after operating it for three hours. When output signal of the equipment is transmitted to the sequencer, make the setting so as to introduce the output after operating the monitor over than one hour. We recommend you that the monitor is always under condition that power is supplying, except not using it for long term. 8.2 Measurement (1) After when warming-up operation has finished, Measurement (MES.)LED lightening, the monitor automatically start to measure ozone concentration. (2) Measured value of ozone gas concentration is indicated on the display. (3) And then, analog outputs (voltage / current) proportional to measured value of ozone gas will generate and transmit. (4) After measurement, ozone gas is discharged through the sample outlet (OUT). Before discharging ozone gas, it should be treated by the ozone gas destructor. CAUTION  If contaminant from the outlet for sample gas becomes a problem, take a measure such as attaching a filter and arranging an extra piping to solve the problem.  After measurement, ozone must be decomposed by the ozone gas destructor before discharging a sample gas. Use the ozone gas destructor which has a low pressure loss (within ±1.47 kPa). (Make the sample outlet atmospheric pressure.) 9 Span calibration As this equipment was designed and manufactured paying attention to take a high stability on the electronic circuit operation and still more the monitor was calibrated when shipping so that changing the calibration ratio and/or adjusting the equipment is not required over again. If the measured value is different from value that it is gotten by analyzing the Ozone gas and if it has to fit the analyzed one, perform its calibration according the following procedure. E.J. OZONE PRODUCTS 23 EOP-D68-003-002-08E (1) Perform a warming operation plentifully. (2) Supply ozone sample gas to the monitor. (3) The measured value should be recorded after when indication of the monitor becomes to be in steady state. (4) Perform the analyzing ozone gas, and fit the indicated value to one of analyzed ozone. For detail, refer to the following. And yet, adjustable span range is '0.000 '~ '2.000 'and its adjustable minimum value is 0.1 % notch of full scale. Example Where; Monitor indication value ··············································· 19.2 ppm Analyzed value ································································ 18.2 ppm Span calibration ratio when shipping ·························· 1.112 Thus, new span calibration ratio = 18.2 19.2 × 1.112 ≒ 1.054 In this case, span calibration ratio of this monitor should be revised it to [1.054]. (5) The span calibrated ratio of this equipment when shipping is recorded on its inspection sheet keeping inside of the front door, and make its entry of the new rates in the test report. Setting method on the span calibrated ratio By using the panel switch on the front door, the span calibration ratio can be done. Perform changing it, referring "Mode switch and each setting" of item 4.1“Mode switch and each setting”. 10 10.1 Maintenance and inspection Daily inspection Table 1 Inspection item Inspection item: the choked filter Inspection term Choking the filter: If a filter is used in the environment place where much dust is flowing, the monitor may have a chance of choking the filter in short term and can cause in trouble which monitor will not suck the sample gas. Confirm whether monitor can suck the gas or the filter is not choked under the daily inspection. Range of light quantity of Mercury lamp: Proper range of both sensor 1 & 2 is 500 ~ 4000. We recommend earlier replacement of the lamp when the light quantity becomes to be under 500. Regarding of measurement, it can possible to measure till the light quantity will become to 200. (If it becomes to 200, error will be output.) E.J. OZONE PRODUCTS 24 at any time EOP-D68-003-002-08E 10.2 Consumable parts The component parts used in the monitor have an operating life. All the parts are warranted for one year from the date of delivery. And then, deterioration and/or corruption of materials by ozone reaction are out of our duty for warranty. Replacing criteria of the main parts are as follows. Table 2 Product name low-pressure mercury lamp Sampling pump set 3 ways solenoid valve zero gas generator ozone destructor filter O-ring (used in the cell block) Goods code EO018B quantity / unit 1 pc Consumable parts list replacement term Remarks every 2 years The mercury lamp has a life, so that it may have a drop of light quantity or it may allow the lamp not to give light. BZ400A 1 set every 1 year BZ136A 1 pc every 1 year BZ031B 1 pc every 1 year BZ031B 1 pc every 2 years NF012A ― 1 pc 1 set every 1 year at any time joint and tubing ― 1 set at any time UV sensor BZ072B 2 pcs 4~5 years working level This sampling set consists of a pump with tube and withstand vibration gum. A diaphragm portion and motor of the pump becomes to be deteriorated and the pump begins possible to so as not to get specified flow rate. replace by By abrasion, the valve becomes user not to change the sample gas. Corresponding used time, this may not be able to generate the zero gas. According to the using environment, choking the filter with contamination becomes not to get specified flow rate. O-ring is used as sealing material. As sealing characteristics will decrease by ozone reaction, it should be replaced when maintenance, if needed. In accordance with using environment, O-ring installed in the piping and/or joint, its sealing characteristics become to be deteriorated, so that it should be replaced when maintenance if needed. necessary to replace by our service man Sensing change or deterioration will occur under using condition. Our EG-700EⅢ Ozone Monitor is another model of ozone monitor which is used for measuring a low-concentration ozone gas. It has a very similar appearance to the model EG-700EⅣ. But they have the different components, so that when you order consumable parts, please confirm Model on the name plate and also their goods codes with take out of mistake. E.J. OZONE PRODUCTS 25 EOP-D68-003-002-08E CAUTION If another material excepting ozone is contained in the sample gas, it may sometimes have corrosion, corruption and white spot on the inside of wetted parts. In this case, when the monitor has a failure trouble and also becomes to be unable to measure the calibration, we can not have a duty to pay the warranty. 10.3 Replacing the consumable parts WARNING  High voltage power supply (Steady state: about 200 V AC and Starting state: about 1000 V AC in a moment) for the mercury lamp is built in the monitor, so that you may have an electrical shock when perform adjustment and repairing inside of the monitor. Do perform it with specialist.  The UV rays emitted from a lightening mercury lamp may sometimes be harmful to the eyes and the skin. Refrain from taking out a lighting mercury lamp from the holder or gazing at a lighting mercury lamp. CAUTION  Replacing works of the consumable parts or the wiring works should be performed after when electric power turned off.  Give care to the low-pressure mercury lamp, it is very high temperature for a sometime after when electric power turned off.  Surface of the parts (including parts installed on the printed circuit board) have much high temperature. When supplying the electric power or opened the front door at a moment after it turned off, take much care of working with the monitor.  The low-pressure mercury lamp as consumable part contains harmful component to the humans, so that the used lamp should be scrapped in accordance with your local regulation.  Do not drop the low-pressure mercury lamp, do not throw a material against it (affected with weight) and do not add with unreasonable stress and flawed, because it is a glass product.  Do not touch a broken lamp with hands directly. If you touched it, wash with tap water what was attached to the hands and after that, wash again with soap thoroughly.  Even if the monitor is used on the floor, it should be fixed on it.  There is a life to the parts used inside of the monitor. If usages of the parts have elapsed since the replacing term limit, these matters may be related to cause of trouble on the other parts. Do perform its maintenance periodically. E.J. OZONE PRODUCTS 26 EOP-D68-003-002-08E pressure switch lamp holder zero gas generator 3-ways solenoid valve control PCB Figure- 11 cover sampling pump ozone destructor Arrangement of main parts ~ How to attach or remove the joint used for this monitor ~ ① Attaching the tube For the sample inlet, insert the tube until it is well seated in the joint. Doing so will fix the lock nail and the elastic sleeve seals the rim of the tube. Improper attachment of the tube may cause leakage. After attachment, pull the tube and make sure that it is not pulled out. Precaution: Make sure that the tube is cut at the right angle, the outer surface of the tube is not damaged, and the tube is not folded. When reattaching a used tube, the end of the tube should be cut to prevent leakage. Figure- 12 Attaching the tube ② Removing the tube The tube can be pulled out by pressing the opening ring of the joint to open the lock nail. Make sure to turn off the power before removing the tube. Precaution: Press the opening ring evenly as far as it goes and then pull out the tube. If the opening ring is not pressed far enough, the tube may not be pulled out, or particles that came off opening ring from the damaged tube may stay inside the joint or the tube and affect the monitor performance. Figure- 13 E.J. OZONE PRODUCTS 27 Removing the tube EOP-D68-003-002-08E (1) Replacing the mercury lamp ① The lamp holder is equipped on the inside of the front door. For easier maintenance, many parts are attached to the inner side of the front panel. When opening the front panel while the monitor is not fixed, the monitor may topple under the weight of the front panel. Please take care of this thing. ② Make sure that the power is off, and then remove the connector for the lamp. lamp cover fixing screw connector with lamp cable Figure- 14 Removing the lamp cover ③ Remove the screws which are tightened to a lamp cover and also remove the cover. ④ Remove screws which are tightened to the lamp. ⑤ Fixed a new lamp with screws. Attention when installing the lamp • Take care that oil & fat (fingerprint) and stain will not stick on the tube of mercury lamp, PCB, fixed tool and etc. • Wipe out the oil and fat and etc. with a paper for cleaning after it was soaked in alcohol, when had them. lamp screws for lamp fixing screwthe lamp installing Figure- 15 Removing the lamp • Give care incidentally to drop the mercury lamp or also to give a strong shock, this will crack its tube and also will give a wrong affect to its life and light quantity. Take care that he handling sufficiently. • Recommended to replace the mercury lamp which was dropped, or one of giving the strong shock. ⑥ Take precaution to attach the lamp cover so as not to catch cable with the lamp cover at that time. Precaution: ⑦ Connect the connector for halfway use. • The warming-up operation should be performed for more than 3 hours after replacing the mercury lamp, and the monitor is normal if the light quantity of its lamp is in 2300±300 (in case of ambient temperature is 25±2℃). The light quantity is changed to the much level by temperature in atmosphere. • Life of the mercury lamp is about two years in condition of continuous operation (warranty: one year after when you are receiving inspection). To repeat turning on/off may decrease its allowable operating time. Proper range of light quantity of mercury lamp of both sensor 1 & 2 is 500 ~ 4000. We recommend earlier replacement of the lamp when the light quantity becomes to be under 500. Measurement can be performed until the light quantity decreases to 200 (error will be output if it reaches 200). • Regarding the unused lamp for long term, take care that the measured value will sometimes change itself for a while after warming-up operation. • In case that the lamp is stocked for long term, it may have a deterioration for its characteristics, so that we recommend to replace it periodically. • When scrap the mercury lamp, you should perform it according to your local regulation. E.J. OZONE PRODUCTS 28 EOP-D68-003-002-08E ~ Adjustment of light quantity of lamp ~ WARNING  Take care that there is a portion of which surface of the parts on the PCB has high temperature.  UV ray from the low pressure mercury lamp may affect bad influence on the eyes and skin, so that you should take care of this thing.  Do not carry out that you take out the low pressure mercury lamp being light or gazing it. When working with the monitor, the anti UV ray glasses should be used.  High voltage power supply (Steady state: about 200 V AC and Starting state: about 1000 V AC in a moment) for the mercury lamp is built in the monitor, so that you may have an electrical shock when perform adjustment and repairing inside of the monitor. Do perform it with specialist. This equipment is not required to readjust light quantity under using the monitor, but when replacing the lamp, it is required to readjust its light quantity. Even if the monitor is operating normally before replacing the lamp, the monitor becomes to have an error indication after when it’s replacing, the monitor should be readjusted according to the following procedure. When the monitor has not the error indication, it can be used without problem. Required tools for adjustment ・a digital multi-meter or a tester······················································································· 1 unit ・precision driver with minus head (point thickness: less than 1 mm) ························ 1 pc ① Perform warming-up operation more than 30 minutes under condition that the front door is closed. ② Make the monitor indicate sensor light quantity 1 (S1) on the display. At this time, if its indication value is 2300±300, the readjusting is not required. ③ Rotate VR7 on the control PCB (see Figure-14) with a precision driver and set the light quantity at the range of 2300±100. When this setting, take care of the fluorescent lamp light or sun shine so as not to directly affect a sensor in enclosure, because the sensor will reflect to the sensor by UV ray from these light sources. Precaution: • Some parts on the PCB are at high temperature. Careful handling is required. • Light quantity value when adjusting its light quantity is one of environmental temperature at 25±2℃. • The lamp light quantity will change according to environment temperature, for example, if it was set at low temperature and if the monitor is installed at high temperature, the monitor may have an error indication. E.J. OZONE PRODUCTS 29 EOP-D68-003-002-08E ④ Make the monitor indicate a sensor light quantity 2 (S2) on the display. As in the case of S1, readjusting is not required if the light quantity indicates 2300±300. Regarding adjusting the light quantity, rotate VR8 with precision driver and set the light quantity at range of 2300±100. At that time, when this light quantity is less than half value in comparison with light quantity 1 (S1), there is possibility that inside of optical cell may have a spot. In this case or if you are unfamiliar with the monitor or how to follow the equipment service from outside JAPAN, please dial or send E-mail to our offices of the following. ⑤ To be concluded by performing the above procedures. Close the front door and perform to measure ozone concentration. Note: If the monitor has an error after this adjusting works, consult with us about this problem to our sales branch by cables or E-mail above. VR7 VR8 Figure- 16 Position of trimmer on the PCB (2) Replacing the pump ① Make sure that the power is off, and then disconnect the connector of the sampling pump (referred to as pump in the following) which is connected to CN17 on the control PCB. After that, cut the banding band that fixes the wire using a nipper and remove the spiral tube. tube pump screw for fixing the pump ② Cut the banding band that fixes the tube near the inlet/outlet of the pump using a nipper, and pull out the tube. (If the tube is not pulled out, warm the tube using a drier and then try again.) We recommend you to record or photograph the piping arrangement before replacing the pump to avoid incorrect connection. pump fixing panel withstand vibration gum screw for installing the withstand vibration gum ③ Unscrew the two screws that fix the cover attached in front of the pump, and remove the cover. E.J. OZONE PRODUCTS union band cover Figure- 17 30 Sampling pump EOP-D68-003-002-08E ④ Unscrew the four screws that fix the withstand vibration gums and remove the pump unit (including the pump, pump fixing board and withstand vibration gums). Make sure to replace the withstand vibration gum since it hardens or crack occurs due to wear and tear. ⑤ Put a new pump unit in place and fix the withstand vibration gums with four screws. (Make sure that the pump fixing nut is not loosened and the pump is fixed to the fixing board, and also the withstand vibration gums are fixed properly.) ⑥ Insert the tube to the inlet/outlet of the pump and fix it with a banding band. The OUT side of the pump (specified on the pump) is connected to the outlet of the monitor, and IN side of the pump is connected to the optical cell. ⑦ Connect the connector of the pump to CN17 on the control PCB and wrap the spiral tube around the wire and fix it with a banding band. ⑧ Confirm that the wiring and piping are properly arranged, and then turn on the power and check to see if the pump sucks in a sample gas normally. Precaution: When attaching the withstand vibration gum, make sure that it is not twisted. If fixed under the twisted condition, there is cause that it will not get the sufficient effect for withstand vibration or may have it to be broken off. To avoid twisting the withstand vibration gum, hold the base of the withstand vibration gum with pliers while fixing it with screws. (3) Replacing the 3-ways solenoid valve ① Remove the tube connected to the solenoid valve. At this time, take care so as not to forget the connecting position of each tube. ② Pull out a connector of 3-ways solenoid valve installed on the control PCB. The wire is fixed to the mount. Cut the banding band with a nipper and then remove the wire. ③ Unscrew the fixing screws and remove the 3-ways solenoid valve. ④ Attach stainless joints to NO and COM, and attach a resin joint to NC of a new solenoid screw ① for the solenoid valve valve with reference to the removed valve. screw ② for the solenoid valve (Check the condition of the joints used for the old valve. If they are in good condition, you can use them for a new valve.) Figure- 18 3-ways solenoid valve ⑤ Perform the above ①~③ procedures toward reversed direction, so it can install it. E.J. OZONE PRODUCTS 31 EOP-D68-003-002-08E (4) Replacing the zero gas generator The zero gas generator specified in “10.2 Consumable parts” (goods code:BZ031B) is used. ① Remove the tube connected to the zero gas generator. ② Cut the union band that fixes the zero gas generator using a nipper and remove the generator. ③ Remove the joint from the zero gas generator and attach it to the OUT side (see Fig.- 19) of a new generator. (Check the condition of the joint used for the old generator. You can use it for a new generator if it is in good condition.) ④ To install, follow the above procedure in the inverse order. Attach the zero gas generator in correct direction and fix it with a banding band(see Fig.- 19). flow Figure- 19 Zero gas generator Precaution: The zero gas generator decomposes the ozone in the atmosphere and generates an ozone-free gas. If the atmospheric component changes significantly or the temperature or humidity level differs greatly from a sample gas, humidity or interfering gas may affect the generator. This can be reduced by taking the warm-up time longer than usual. (5) Replacing the filter ① Removed the used filter. ② Connect a new filter to the original position with attention to the direction of the arrow marked on the filter. Precaution: Normally, replacement is recommended once a year, however, it should be performed depending on the operating condition. And then, if the monitor has an error regarding flowing the used ozone, replace it. (6) Replacing the ozone destructor The ozone destructor specified in “10.2 Consumable parts” (goods code:BZ031B) is used. ① Remove the tube connected to the ozone destructor. ② Cut the union band that fixes the ozone destructor using a nipper and remove the destructor. ③ Remove the joints from the ozone destructor and attach them to a new destructor, attaching the T-joint to the upper side (see Fig.- 20) and the straight type joint to the lower side. (Check the condition of the joints used for the old destructor. You can use them for a new destructor if they are in good condition.) To install, follow the above procedure ①~③ in the inverse order. Attach the ozone destructor in correct direction (see Fig.- 20). E.J. OZONE PRODUCTS 32 Figure- 20 Ozone destructor EOP-D68-003-002-08E Precaution: Measuring a gas that contains NOx may degrade the ozone destructor performance. NOx is likely to be generated with ozone gas especially when ozone is generated from a material gas without performing dehumidification. If the ozone destructor performance is degraded, it should be replaced even if it is used less than one year. 10.4 Trouble shooting Table 3 Trouble shooting Symptom Cause Confirmation & Correction action When sucking zero gas, It is possible that the Perform to adjust zero point according to indication value and monitor may have a shift of "Offset function" of item 5.5. analog output do not zero point. become zero. When sucking zero gas, check whether indication of zero point is in steady state or not. • In case of steady condition There is a possibility that the generated (leaked) ozone concentration itself may Indication value will Mercury lamp burned out have a fluctuation. Usually, the measured not come to steady state. or its ignition failure. value may sometimes have fluctuation, because characteristic of ozone gas has much lack of stability. • In case that it has not stability The mercury lamp may not be lighted steadily. The replacing term may already have passed. Replace the lamp with a new one. Refer to (1) Replacing the mercury lamp in “10.3 Replacing the consumable parts” for details. * If the lighting condition of the mercury lamp is unsteady, it may be improved by turning off the power and then turning on again after some minutes. Tackle the problems on Table 4 according to "Monitor error" of item 5.2. Error code is indicating. E.J. OZONE PRODUCTS 33 EOP-D68-003-002-08E Table 4 Error code ① E0 ② E1 ③ E2 ④ E3 ⑤ E4 ⑥ E5 ⑦ E6 ⑧ E7 Countermeasure chart for error Confirmation & Corrective action Measured ozone concentration has increased When measured value has exceeded from than upper limit of measured range. In this indication range, this is displayed. condition, the monitor can not only measure Moreover, when the value returned in the ozone concentration correctly but also its range, the monitor becomes to be under process parts become to be deteriorated. normal operation. Check or decrease the ozone concentration immediately. Light quantity of sensor 2 is normal. Even if you perform to operate the monitor When one of sensor 1 has decreased, this again and also the symptom is not cancelled, it will display. has a possibility whether mercury lamp or Light quantity on sensor 1 is normal. sensor has failed. Replace the mercury lamp or When one of sensor 2 has decreased, this the sensor with a new one. will display. If you are unfamiliar with replacing the Light quantities of both sensor 1 and 2 mercury lamp, please consult us of this trouble. have decreased, this will display. It may cause in change by the internal setting This is displayed when the internal switch switch. Check and readjust it in condition when is not set correctly. shipping. Not used Even if you perform to operate the monitor This display is depended on failure of again and also the symptom is not cancelled, it internal circuit. has a possibility that the IC and etc. on PCB are failed. When flow rate of sample gas had decreased than specified value or when Confirm whether filter had choking or output of the monitor had choked, this is damaging the tube. indicated. If its flow rate returned to its If they have not any problem, replace the pump. specified value, the monitor will return to normal operation. E.J. OZONE PRODUCTS Cause 34 EOP-D68-003-002-08E 11 Model and code ａ ＥＧ－７００ＥⅣ power specification mounting method concentration range DC 24Vdc ± 4V 1 0 ～ 20ppm A 2 0 ～ 50ppm B 3 0 ～ 100ppm 4 0 ～ 200ppm analog output floor mounting wall mounting 0 0 ～ 1Vdc 4 ～ 20mAdc 1 0 ～ 10Vdc 4 ～ 20mAdc alarm contact signal output ※1 AL1 AL2 A a contact a contact B a contact b contact C b contact a contact D b contact b contact ａ error signal contact output 0 a contact 1 b contact option required document (onerous) none N 100 ± 10％ac AC1 Japanese use (withstand voltage 125V) AC2 220 ／ 240Vac abroad use (withstand voltage 250V) ※2 0 not necessary 1 calibration sheet 2 instruction manual in English 3 calibration sheet instruction manual in English ※3 For mounting method, customer can be changed by optional order. ※2) In case of optional AC power supply, AC adaptor used in outside is attached. ※3) One copy of English version of instruction manual and one copy of calibration sheet are available as required documents. (One copy of Japanese instruction manual and one copy of inspection certificate are attached to the instrument as standard accessories.) ※1) According the model and code in the above, please confirm whether it is one of your suitable monitor. E.J. OZONE PRODUCTS 35 EOP-D68-003-002-08E 12 Warranty Our products are warranted for 12 months from the date of delivery. However, note that the following cases are not covered by this warranty. ◇ Following failures or damages occurred within the warranty period. Failure caused by misuse. Failure caused by inappropriate repair or modification using non-genuine parts. Failure or damage occurred during transportation or by drop after delivery. Failure or damage resulting from fire, brine, gas, earthquake, wind, flood, lightning, abnormal voltage or other natural disasters. ⑤ Failure caused by degradation of consumable parts (packings or seals). ① ② ③ ④ Well, we can not warrant you for defects of the related devices, injury of human body and your any loosed profits even if when their in and out of guarantee terms. ◇ Others (1) Contact the dealer when repair is needed. (2) This instrument is repaired at our side after it is sent from the user. (3) The minimum storage period of repair parts and necessary parts for this instrument is seven years after discontinuation of the instrument's production. * The “repair parts and necessary parts” stated here means the parts required to keep the product performance. (4) The coverage of warranty for any event that has not occurred in the past is discussed as it arises. The specification may have to change without its announcement for improving and remodeling the equipment. E.J. OZONE PRODUCTS 36 EOP-D68-003-002-08E unit: mm Figure- 21 E.J. OZONE PRODUCTS Outline of Model EG-700EⅣ ozone monitor 37 EOP-D68-003-002-08E filter ＳＡＭ ＩＮ (Press.:within±150 mm Aq) Press.:within±1.47 kPa(G) 3-ways solenoid valve S detecting cell zero gas generator Ｐ pressure gauge with switch ozone destructor ＯＵＴ (Press.:within±150 mm Aq) Press.:within±1.47 kPa(G) Figure- 22 E.J. OZONE PRODUCTS Ｐ pump Flow line diagram of Model EG-700EⅣ ozone monitor 38 EOP-D68-003-002-08E MEMO E.J. OZONE PRODUCTS 39 荏 原 実 業 株 式 会 社 計測器・医療本部 計測器営業部 ■東日本営業課：〒215-0033 神奈川県川崎市麻生区栗木2丁目3番12号 TEL 044-981-0560 FAX 044-981-0561 E-mail ej-ozone＠ejk.co.jp ■西日本営業課：〒541-0046 大阪市中央区平野町3丁目2番13号 平野町中央ビル5階 TEL 06-6231-3528 FAX 06-6231-2929 E-mail ozon-osaka＠ejk.co.jp 技 術 部 ：〒215-0033 神奈川県川崎市麻生区栗木2丁目3番12号 TEL 044-981-0560 FAX 044-981-0561 E-mail ejozndsn1＠ejk.co.jp 取扱店：