Transcript
SITEL Control
srl
Via Arnesano, 4 – 20030 Palazzolo Milanese – Milano – Italia Tel. +39-02-99045994 / Fax +39-02-9101082 e-mail:
[email protected] / http://www.sitelcontrol.it
OPERATION MANUAL OPTICAL THERMOMETERS FOR THE MEASURE OF TEMPERATURE PROFILES
STARLINE H / M 14/32
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CONTENTS 1.
INTRODUCTION 1.1 Legend of the safety symbols in the manual 1.2 Technical specifications
2.
GENERAL DESCRIPTION 2.1 Mechanical specifications 2.2 Electrical specifications 2.3 Technical specification H-32 model 2.4 Technical specification H-14 model 2.5 Technical specification M model
3.
COMMISSIONING 3.1 Measuring-area 3.2 Mounting method 3.3 Cooling and lens-cleaning system 3.4 Power supply 3.5 Analogue interface 3.6 Digital interface
4.
PROGRAMMING 4.1 Output mode 4.2 Emissivity 4.3 Peak
5.
USE SUGGESTIONS
6.
MAINTENANCE 6.1 Cleaning 6.2 Air check 6.3 Calibration check
7.
RISK ANALYSIS 7.1 Dazzling risk by LASER radiation
8.
ACCESSORIES
9.
DECLARATION OF CONFORMITY
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1.1 Legend of the safety symbols in the manual
Attention, danger (ISO 7000, -0434) Attention, laser ray (CEI EN 60825/1)
Attention, chemical intoxication risk
Power supply both direct and alternate current (IEC 60417, -5033)
Ground terminal (IEC 60417, -5017)
1.2 - INTRODUCTION The STARLINE optical thermometers have been designed to operate in the most severe environmental conditions and specific models are available to suit any possible application. Their manufacturing is monolithic and particularly solid : the Anticorodal anodised aluminum case is completely hermetic and has an integrated cooling jacket and an efficient air-cleaning system. The electronic set up is completely digital and the temperature data can be provided in two simultaneous modes: a serial RS485 output (RS232 upon request) and an analogue 4-20 mA output (current-loop) upon request (“BA7” models). Three basic models are available with different sensors and, consequently, different temperature-range and resolution of the measured temperature-profile : H - 32 model (temperature range 550 to 1800° C and 32-point resolution), H - 14 model (temperature range 550 to 1800° C and 14-point resolution) and M model (temperature range 300 to 900°C 14point resolution). All models can be equipped with a LASER pointer for a precise definition of the straight-line for the thermal-profile measuring, to facilitate the pyrometer’s alignment with the object.
2 - GENERAL DESCRIPTION 2.1 Mechanical specifications All optic and electrical parts are contained into the solid Anticorodal anodised aluminum case suitable for moderately aggressive environments. It is absolutely watertight up to a hydrostatic pressure of 1 meter water column. All STARLINE models have an identical case ; for all mechanical dimensions please refer to the following illustrations.
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Illustration 1 : STARLINE pyrometers mechanical dimensions
Mounting plate
Mounting plate air / water connection
air purge connection
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air / water connection
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2.2 Electrical specifications The pyrometer is powered by direct current ; its analogue output is galvanised and isolated from the power supply. D.c. supply :
voltage = current =
9÷36 V dc ; only on BA7 mod. : 9÷36 V dc or 9-24 V ac 100 mA max. (laser pointer mod. : 200 mA)
Protection :
IP65
Analogue output :
4-20 mA on BA7 model providing the maximum temperature value along the measured profile ; max. load 1000 ohm
Illustration 2 : Connection to the connector, welding side
Seven-pole version on standard STARLINE
Five-pole version on BA7 STARLINE Pin
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Programmed output 4-20 mA
Programmed output RS 485
1
Out 4-20 ” +“
Link “B”
2
Out 4-20 “-”
Link “A”
3
Power supply
Power supply
4
Power supply
Power supply
5
Ground
Ground
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2.3 Technical specifications H-32 model The following figures refer to the catalogue’s standard models and many of them, for example the measuring-range or the optical specifications, may be varied to suit all particular needs. If necessary, please contact our sale department. Sensors number : Scanning frequency : Measure-range :
Response time : Minimum operation distance : Distance/target ratio :
32 5 Hz 550÷1000° C 800÷1500° C 1000÷1800° C 1μm 0,55 μm 200 ms 100 mm 100:1
Emissivity :
20÷100 %
Accuracy : Reference temperature : Room temperature : Thermal drift : Analogue output :
1° C 25° C -10÷70° C 0.2° C/room °C only on BA7 instruments : 4-20 mA - output value : maximum temperature value measured along the profile Half-duplex RS485 (protocol available upon request) RS232 (optional)
Measure spectrum :
Digital output :
(H-32L model) (H-32 model) (H-32H model) (standard) (only for melting applications) (minimum) (10 mm target at 1 m distance) (adjustable either by a digital separated indicator, or by an onboard device when the output is analogue)
2.4 Technical specifications H-14 model The following figures refer to the catalogue’s standard models and many of them, for example the measuring range or the optical specifications, may be varied to suit all particular needs. If necessary, please contact our sale department. Sensors number : Scanning frequency : Measure-range :
Response time : Minimum operation distance : Distance/target ratio :
14 150 Hz or 75 Hz 550÷1000° C 800÷1500° C 1000÷1800° C 1μm 0,55 μm 5 ms 100 mm 100:1
Emissivity :
20÷100 %
Measure spectrum :
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(H-14L model) (H-14 model) (H-14H model) (standard) (only for melting applications) (minimum) (10-mm target at 1 m distance) (adjustable either by a digital separated indicator, or by an onboard device when the output is analogue) page 6 of 17
Accuracy : Reference temperature : Room temperature : Thermal drift : Analogue output : Digital output :
1° C 25° C -10÷70° C 0.2° C/room °C only on BA7 instruments : 4-20 mA - output value : maximum temperature value measured along the profile Half-duplex RS485 (protocol available upon request) RS232 (optional)
2.5 Technical specifications - M model The following figures refer to the catalogue’s standard models and many of them, for example the measuring range or the optical specifications, may be varied to suit all particular needs. If necessary, please contact our sale department. Sensors number : Scanning frequency : Measure-range :
Measure spectrum : Response time : Minimum operation distance : Distance/target ratio :
14 150 Hz or 75 Hz 300÷650° C 450÷900° C 500÷1000° C 1.6μm 5 ms 100 mm 100:1
Emissivity :
20÷100 %
Accuracy : Reference temperature : Room temperature : Thermal drift : Analogue output :
1° C 25° C 0÷50° C 0.2° C/room °C only on BA7 instruments : 4-20 mA - output value : maximum temperature value measured along the profile Half-duplex RS485 (protocol available upon request) RS232 (optional)
Digital output :
(M-14L model) (M-14 model) (M-14H model) (standard) (minimum) (10-mm target at 1 m distance) (adjustable either by a digital separated indicator, or by an onboard device when the output is analogue)
3 - COMMISSIONING 3.1 Measuring area An optical thermometer detect temperatures according to the amount of infrared rays irradiated by the measuring surface. As concerns STARLINE said surface has a rectangular shape and its dimensions depend on the distance from the pyrometer: as the distance increases, its dimensions will . The measure is proportional to the average of the temperatures within 1/x of the area, where x is intended as the point-resolution of the thermometer (14 or 32). A ratio is set, different for each pyrometer, between the target distance and said diameter; as an example, the ratio 100 :1 means that at 1-m distance the target of each measuring-point has a side of (1000 :100)= 10 mm. In this case a STARLINE pyrometer with a 32-point resolution P.O. 07/F
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will measure the profile of a rectangular area of 10 x 320 mm; a pyrometer with a 14- point resolution will measure a profile of a rectangular area of 10 x 140 mm. This ratio depends on how the pyrometer’s optics is manufactured and particular instruments for specific values can be supplied. Here below you will find a graphic description of the measuring area increasing as distance increases. Illustration 3 : target diameter increase in relation to an increasing distance from the pyrometer
Target graph
Distance Target (32 sensors) Target (14 sensors)
500 mm 5 x 160 mm (32 x 5 x 5 mm) 5 x 70 mm (14 x 5 x 5 mm)
1000 mm 10 x 320 mm ( 32 x 10 x 10) 10 x 140 mm (14 x 10 x 10)
Please note the following considerations : • below the minimum distance the optics is no longer focused; the use of the instrument under such conditions requires some special precautions, most of all if the measuring object is rather small • usually it is essential that the measuring area should be a little smaller than the hot object ; if the area is bigger, the pyrometer will average its temperature and the one of the background (erroneously); if both the areas have about the same dimensions, then the pointing will be critic; whilst if the measure target is much smaller than the object, you will obtain a measure with a high sensitivity to the local temperature gradients, since the effect of averaging over the area has not been taken into account.
3.2 Mounting method P.O. 07/F
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Under the instrument’s body there is a mounting-plate, fixed by four screws ; the plate can get pierced to be hooked at any support. Please pay attention to the following notes : • DO NOT make any fixing-holes on the instrument’s body: the cooling jacket could get pierced ! • Choose a position as sheltered as possible from heat, vibrations, collisions and dust. • DO NOT place any obstacle within the optical run of the instrument; even a common glasssheet can cause measure errors on models H/M. In case of need, please contact SITEL Control for the supply of the proper window material.
3.3 Air-cleaning system The thermometer is provided with a quick-release coupling for a Rieslan 8 mm hose in order to clean the lens. This system needs to be fed by connecting a light pressed air-flow to the input in order to keep the lens of the instrument free from dust and rubble, which could cause remarkable measure errors even by a partial occlusion. The air range has to be tried out by experimenting in order to achieve the results described above ; the air itself must be clean, free from any oil or humidity trace. If necessary, provide a suitable filter. Illustration 4 : cleaning-air connection
3.4 Power supply The power supply specifications have already been described at paragraph 2.2. We recommend what follows: • use cable-leads to properly lay the cables and tight them well • connect the ground both as a guarantee for the necessary electrical safety and an improvement of the rejection of the instrument to any electromagnetic interference.
3.5 Analogue interface The “STARLINE BA7” version is equipped with a 4-20 mA current-loop standard analogue interface. This allows the instrument to be connected to the proper analogue inputs of PLC, LED, recorders, industrial PC by a simple two-wire connection. The analogue output transmits the lowest temperature detected along the scanning-profile.
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The use of analogue interfaces requires some precautions and the scrupulous respect of the possible connection schemes. If you have any doubts about it, please contact SITEL Control technicians. Please consider the following : • it is advisable to use a shielded twisted cable as a connection cable, particularly if it is very long ; • in very “noisy” environments we suggest to connect a 1 μF filter condenser directly on the input terminals of the receiving instrument ; • the current-loop is powered directly by the instrument, so you DO NOT need (in fact it is dangerous) any series connection of external power supplies, as it happens to the two-wire sensors ; • the maximum load allowed is about 1000 ohm; the minimum is 400 ohm. If the connected devices present a much lower impedance (possibly 2.49 ohm), we advice a series connection of the 470 ohm/2W provided resistor ; • the instrument can stand the net short-circuit on the current-loop for a maximum of 30 seconds. 3.6 Digital interface The digital output of the instrument, half-duplex RS485 type, is mainly intended to connect the SITEL Control digital LED S4 S4T and S20 models or an intelligent acquisition system working on PC or PLC. In consideration of the various advantages it offers (contrary to the analogue interface), we suggest to adopt it whenever the instrument has to be interfaced with digital equipment like an industrial PC. All the details about the specific protocol, easy to be implemented, are available upon request to SITEL Control.
4 - PROGRAMMING The operational parameters of the instrument (emissivity, response-time, processing functions) are usually managed and programmed by the panel of the digital indicator attached to the thermometer or via software by the acquisition system; for further details refer to the related manuals. “STARLINE BA7” offer the chance to adjust the material emissivity on board and to insert a peak-decay function for special applications, “stand alone” type. The regulation is possible thanks to 3 decadic rotary switches, which you can reach by unscrewing the plastic cap on the rear. Besides it is possible to select the output (4-20 mA analogue or RS485 digital). 4.1 Output mode This dip-switch selects the type of output (pin 1 and 2 of the five-pole connector) : Sw 1 and Sw 2 “ON”, Sw 3 and Sw 4 “OFF” : analogue 4-20 mA output Sw 1 and Sw 2 “OFF”, Sw 3 and Sw 4 “ON” : digital RS485 output ATTENTION : All other combinations are not allowed and could damage the instrument.
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Illustration 5 : STARLINE thermometers drive for the adjustment of emissivity and peak, analogue output (STARLINE BA7 version only)
4.2 Emissivity We would like to remind you that the emissivity of a body can be defined as the ratio of the radiation emitted by the surface of the body itself and the one emitted by an ideal black body at the same temperature. Figures range from 0 (ideal mirror) and a 100% (ideal black body) and depend on various characteristics like the kind of material, surface roughness, positioning-angle between pyrometer and surface. In the following pages you will find the emissivity values of some materials valid for orthogonal incidence and medium roughness surface: they will have to be adjusted by experimenting according to the material’s peculiar characteristics.
ALLOYS MATERIAL BRASS OXIDIZED
INCONEL OXIDIZED
CHROMEL-ALUMEL OXIDIZED
NICKELCHROME OXIDIZED
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STARLINE – H/M 0,3 0,70 0,3 0,85 0,3 0,80 0,3 0,85
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METALS MATERIAL ALUMINUM OXIDIZED
CHROME OXIDIZED
COBALT OXIDIZED
COPPER OXIDIZED
CAST IRON Liquid IRON & STEEL OXIDIZED
LEAD OXIDIZED
MAGNESIUM OXIDIZED
MOLYBDENUM OXIDIZED
NICKEL OXIDIZED
STARLINE– H/M 0,13 0,40 0,45 0,75 0,32 0,70 0,08 0,85 0,40 - 0,45 0,35 0,85 0,35 0,85 0,28 0,75 0,33 0,80 0,35 0,85
PLATINUM
0,27
SILVER
0,05 0,10
OXIDIZED
TIN OXIDIZED
TITANIUM OXIDIZED
ZINC OXIDIZED
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0,40 0,60 0,55 0,80 0,50 0,60
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REFRACTORY MATERIAL MATERIAL ALUMINA BRICK RED REFR. WHITE SILICATE SILLIMANITE
CERAMICS
STARLINE – H/M 0,90
0,80 0,30 0,55 0,60 0,40
MISCELLANEOUS MATERIAL
STARLINE – H/M
AMIANTITE
0,90
ASPHALT
0,85
COAL GRAPHITE CARBON-BLACK
CEMENT & CONCRETE FABRIC PAPER
0,85 0,95
0,65 0,75
0,80
GLASS 20 mm thickness
4.3 Peak This function can be deactivated by turning its rotary switch on [0]. It changes the operation mode: the pyrometer detects in real time the temperature increase, whilst at any temperature decrease the measure will be only decreased by the programmed decreasing-ratio. As an example, programming [32] the temperature measure will be decreased only by the fixed rhythm of 32°C/second, independent of its effective progress. This is useful to settle the measure of periodically obscured objects.
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Rotary switch 0 1 2 3 4 5 6 7 8 9
Peak-picker decay (°C/s) Peak function off – direct temperature reading 1 °C/s 2 °C/s 4 °C/s 8 °C/s 16 °C/s 32 °C/s 64 °C/s 128 °C/s 256 °C/s
Illustration 6: peak-function
5 - USE SUGGESTIONS SITEL Control engineers are at your disposal to examine any possible applications, even the most unusual ones. The long established experience and many years of practice, allows us to cope with any installation exigencies. Please feel free to contact us.
6 - MAINTENANCE 6.1 Cleaning An optic thermometer “sees” the object through its front-lens: if this is dirty, wet or scratched, the thermometer can no longer measure. Therefore it is necessary to periodically check the lens and clean it if necessary by using a normal detergent. 6.2 Air check P.O. 07/F
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The cleaning- cooling-air must be always dry and clean, therefore it is necessary to periodically check the filter and replace it if necessary . 6.3 Calibration check Checking the correct calibration is possible only by using the proper sophisticated instruments, therefore only at SITEL Control laboratories. Usually a calibration check is not necessary because of the tested stability of the instrument’s components and sensors, nevertheless after long operation periods it may be necessary to recalibrate it, mostly because of the possible mechanical degrading of the optical external parts.
7 - RISK ANALYSIS STARLINE instruments have been designed to comply with the usual safety norms, and when used properly, they do not present any risk for the operators. We recommend not to use this instrument for any purpose different from the one it was designed for. STARLINE has not been designed for any applications in which a malfunction may cause heavy risks for human life or heavy economic and/or environmental damage as well. Here below we remind you the only notice to pay attention to. 7.1 Dazzling risk by LASER radiation If the pyrometer is equipped with a LASER pointer which facilitate the pointing on the object, do not ever stare into the LASER beam with naked eyes, nor through any optical instrument. This could cause serious lesions to your eyes.
8 - ACCESSORIES STARLINE instruments have been designed for the best operation versatility, integrating in each instrument the most common processing functions. The following digital LED are available at SITEL Control ; they are perfectly compatible with STARLINE and very useful in case you need to visualise the temperature on a remote panel. 1. S4+
4+1 figure digital LED Two additional alarm levels with a relay output 4-20 mA, 0-20 mA or 0-5 V programmable analogue output Processing functions (peak, average, threshold, etc.) DIN 48x96 case, 160 mm depth - Power supply 220 V ac Can be connected to STARLINE by a twisted shielded cable up to a 500 m length
2. S4T
4+1 figure digital LED Two additional alarm levels with relay output Processing functions (peak, average, threshold, etc.) Functions and interface personalised for the control of induction weldingmachines DIN 48x96 case, 160 mm depth - Power supply 220 V ac
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Can be connected to STARLINE by a twisted shielded cable up to a 500 m length 3. S20
Multiple digital LED with alphanumeric display Simultaneous control and visualisation up to 4 instruments Independent alarms and functions for each channel Rack 19” 3U - 42TE case - 160 mm depth - Power supply 220 V ac Can be connected to STARLINE by a twisted shielded cable up to a 500 m length
4. QC_T
Complete panel for the automatic control of the welding-temperature on Induction continuous welding-machines as per electric panel IP65.
Various software versions (S4 Virtual, Vistar, Scap) are available for data-acquisition and the creation of thermal maps on personal computer (Windows).
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EC DECLARATION OF CONFORMITY We certify that the instrument indicated at bottom is in conformity with the Community laws and guidelines after specified, in its original state and as supplied by us. In case of modifications not executed by us, this declaration losses its validity. Apparatus:
Optical pyrometer for industrial use.
Model:
STARLINE (all versions)
Production date:
from 1/6/2004 forward
Applied directives and guidelines: Safety:
Electromagnetic compatibility:
EC Council directive 73/23/EEC (Low voltage equipments) and related amendments in 93/68/EEC. Italian DL626/94 (safety of workers); Directive CEI 76-2 (safety of LASER equipments)
EC Council directive 89/336/EC (electromagnetic compatibility and related amendments in 93/68/EEC.
Applied armonized criteria : CEI EN 61010-1 (safety requirements for electrical equipment for measurement, control and laboratory use). CEI EN 60825-1 and related addendum CEI EN 60825-1/(safety of LASER equipments). CEI EN 61326-1 and related addendum CEI EN 61326/A1 – class A (Electrical equipment for measurement, control and laboratory use: EMC requirements).
All test were conducted simulating normal working conditions
Palazzolo Milanese, 3/6/2004
Augusto Gallina Chairman
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