Transcript
Hydrological Services Pty Ltd
ABSOLUTE SHAFT ENCODER RIVER HAWK MODEL AD375MAL
INSTRUCTION MANUAL
HYDROLOGICAL SERVICES Pty Ltd 48-50 Scrivener Street Liverpool NSW 2170 Australia Ph. 61 2 9601 2022 Fax. 61 2 9602 6971 E-Mail:
[email protected]
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Hydrological Services Pty Ltd
TABLE OF CONTENTS 1.
Introduction........................................................................................ 3
2.
Installation .......................................................................................... 4
3.
Maintenance ....................................................................................... 8
4.
LCD Screen ........................................................................................ 10
5.
SDI-12 Compliant Commands ......................................................... 11
6.
RiverHawk – Inbuilt Data Logger ................................................... 14
6.1 6.2 6.3 6.4 6.5
7. 7.1
Hardware Connections ....................................................................................... 14 Communications .................................................................................................. 14 Setup and Configuring the Logger .................................................................... 15 Commands / Syntax ............................................................................................. 16 Data Output Format............................................................................................ 29
Specification ....................................................................................... 32 Hardware Specification....................................................................................... 32
Appendix A Surge Protection ......................................................................... 33 Appendix B SDI-12 to RS232 Interfacing ...................................................... 34
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1.
Introduction
The Hydrological Services Absolute Shaft Encoder model AD375MAL is a low power, microprocessor controlled shaft encoders designed for field operation to enable measurement of water level. The internal CMOS circuitry enables the encoder to output measured levels in absolute format as an SDI-12 signal – and the River Hawk has an inbuilt ML1-420 data logger that uses flash memory to log the water level – and has an RS232 port for configuration and retrieving the data. The River Hawk unique on-board help feature allows the user to obtain a list of commands with their syntax. The indicator LED flashes once a second as a heartbeat, giving the user confidence that the River Hawk is alive and well.
Data Logger RS232 Output Connector with Cover attached (AD375MAL River Hawk Only)
2 line x 16 character LCD with backlighting (All Models)
Not Used
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SDI-12 Output/ Power Input (All models)
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2.
Installation
The encoder is readily adapted to float pulley wheels with beaded or borehole floatline, tape chain and sprockets and gear drives. Provided on the base of each encoder are two threaded holes for levelling screws.
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Beaded Float Line
Two adjustable end hooks (part EH01) are provided for attaching the beaded float line to the float and the counterweight. The length of the float line should be such that the counterweight will not run into the shelf or pulley when the float is at a low stage or strike the bottom of the float well when the float is at the highest stage. Float and counterweight should pass each other and should have adequate clearance from the sides of the stilling well.
Beaded line should be cut about 1/16 inch past a bead to prevent fraying.
Attach the float line to the float and lower it to the water. Pass the float line over the pulley making sure that the cable beads (or tape perforations) engage the respective recessed (or spines) on the pulley. Attach the counterweight and lower it into position.
Borehole Float Line
Attach borehole guide pulleys to mounting bracket. Ensure guide sheave grooves line up with float pulley groove.
Two adjustable end hooks (part EH01) are provided for attaching the float line to the float and the counterweight. The length of the float line should be such that the counterweight will not run into the shelf or pulley when the float is at a low stage or strike the bottom of the float well when the float is at the highest stage. Float and counterweight should pass each other and should have adequate clearance from the sides of the Borehole.
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End Hook Assembly
Cut the beaded line approximately 2 mm (1/16") past a bead to prevent fraying. Attach end hook by :-
Unscrew the plate from the adjustable hook.
Place the beaded line between the two plates and then tighten the screws on the plate.
Allow for a bead to be trapped just below the locking plate. Make sure that the line is sitting perpendicular to the plate.
Electrical Installation The AD375MAL is basically an AD375MA with an internal ML1-420 logger to measure the 4-20mA current representing the water level. A +12V power source must be connected to the SDI-12 / Power port as shown on page 8, to provide power to the AD375MAL electronics and the Logger 4-20mA loop. Once external power is connected, press the “Scroll” button and step to the “Battery Voltage” display. Press and hold the “Select” button until the display shows “Lithium Backup” – No. Press the “Select button again and the “No” will start flashing. Press the “Scroll” button to change the No to a “Yes”. Press the “Select” button to stop the Yes from flashing. Press the “Scroll” button to step back to the main displays. (The internal lithium battery is used to power the internal electronics during transport, but it doesn’t power the circuitry to monitor the shaft rotation position. If this were selected while external 12V power wasn’t present, the lithium battery would last for about 1 month. So with Model AD375MAL © Copyright
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Lithium Backup set to “Yes”, the lithium battery will allow the water level to be tracked by the AD375MA electronics in the unlikely event that the external 12V power is not present) – although the Logger will not be able to log any data since the 12V powers the 4-20mA loop.
*** Extremely Important *** Configuration Since the River Hawk consists of an AD375MA shaft encoder and a built-in ML1-420, they must have the same Range and Offset settings for correct operation. If this range needs to be changed, then please use the following procedure : 1. Decide on the water level range that will be measured. (eg. Min Level = 5m and Max Level = 18m.) 2. Step to the AD375MAL LCD menu that indicates “4mA / 20mA Level” and Set the 4mA Level to 5.000m and Set the 20mA Level to 18.000m 3. The Range in this example is 18m – 5m = 13.000m Set the ML1-420 Logger Range (eg. TxR=13.000) 4. The Min Level in this example is 5.000m (that is the 4mA water level from step 2) Set the ML1-420 logger river height reference to 5.000m (eg. RvHR=5.000) 5. Set the logging interval and transducer warmup period in the ML1-420 data logger. (eg. Say the interval is 15mins and warmup is 2 sec then TXI=015/02 ) 6. To check the setup has been done correctly, enter a WL command on the ML1-420 data logger and check that the water level returned matches the water level display on the AD375MA LCD. (They should match within a few mm, because the data is passed from the AD375MA sensor to the ML1-420 Logger via an analog 4-20mA interface - which will never be perfect !!) Sample Comms Session to ML1-420 @ 9600/8/N/1 passwd=BOMM Password Accepted TxR=13.000 13.000 RvHR=5.000 5.000 TxI=015/02 015/02 WL Please Wait... 7.501 clrv *** This will clear the Rain, River, Battery and TempC Logs *** : Are you sure ? (Y/N) y OK
This completes the basic AD375MAL setup and test. Other parameters may be setup to customize the logger operation – see section 6.4 Model AD375MAL © Copyright
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3.
Maintenance
The AD375MAL (as well as AD37.5MAL, AD150MAL and AD100MAL) Shaft Encoders require no maintenance, however all connected mechanical equipment should be periodically checked for cleanliness and ease of operation.
2 x Internal 3.6V Lithium AA batteries should be replaced every 2 years.
Internal Batteries Replacement Instruction:
Loosen the 4 screws on the enclosure lid
Remove the lid
Cut restraining strap
Remove and replace batteries (ensuring polarity is correct) To ensure processor is not interrupted, this can be done with external +12V applied (use a 3.6v Lithium battery AA package)
Fit a new restraining strap (150mm cable tie)
Replace enclosure lid ensuring a proper fit
Tighten the 4 screws
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Screwless Terminals The plug in terminal block shown is a screwless terminal that keeps a constant tension on the wire that is inserted. (The mating socket on the front panel of the AD375MAL is sealed with a waterproofing gasket.) 1. Use a small flat blade screwdriver and push-in on the orange groove. Multimeter probe can be inserted here !!!
2. Insert the stripped wire here. 3. Release the orange part to put secure the wire. 4. Pull on the wire to make sure it is secure.
External Power Even though the Shaft Encoder's have an internal lithium battery, the unit should only be operated if +12VDC (9.6V to 16VDC) power is connected. This guarantees continuing correct pulse counting and SDI-12 operation. (The internal lithium batteries are for backup purposes only – it will allow the AD375MAL electronics to track the water level continuously for up to 2 months with no external +12V ! However, the data will not be logged because the 4-20mA loop to the ML1-420 will not be operating.) The AD375MAL must have +12VDC power (9.6V to 16V DC) connected for correct operation. SDI-12 Data 0V
To separate data logger
+12V
0V
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4.
LCD Screen
There are 7 LCD screens available. Some screens display internal data and some allow parameters to be changed. The screens are: (Highlighted fields are user selectable) LCD SCREEN
DESCRIPTION
AD375MA S/W 5.1 Display model, S/W Rev and present river level Level: 9.392 m Battery Voltage 3.6V / 12.8V Lithium Backup No
Display internal and external battery voltage. NOTE : Press ‘Select’ to go to “Lithium Backup” menu Internal lithium battery backup can be enabled by setting this option to yes. (See Electrical Installation on Page 6)
Sensor Addr: 2 Sensor ID: 12345 Comms Type: SDI-12 4mA/20mA Level: 5.0 / 25.0 m Quad Direction: Normal
Display Sensor SDI-12 address and external 5 digit ID Allows the comms type of the SDI-12 port to be selected SDI-12. (When RS232 is selected the critical timing is removed) Allows the 4mA level and 20 mA level to be viewed and changed. (Select button must be pressed and held for 10 secs to enter "Set 4mA Level" mode) ****MUST MATCH THE ML1-420 SETTINGS **** Allows the quadrature direction for "rising"water to be changed. (Normal / Reversed)
Set Level: 12.392 m Menu Navigation : Selection Change :
Allows the present River Level to be preset
Press the “Scroll” button to step through the menu’s. Press the “Select” button to enter selection edit mode – value will flash Press the “Scroll” button to change the value Press the “Select” button to move to the next item or complete the edit
RS 232/SDI-12 SELECTION The SDI-12 protocol has very strict timing requirements. The operator may use the SDI-12 to RS232 adaptor cable and then communicate to the SDI-12 port using the RS232 from a PC. The "RS232" option must be selected via LCD screens. In this mode all of the timing/break requirements of the SDI-12 are removed. Commands may be typed from a terminal program such as "Hyperterm". Note you must select 1200 baud, 7 bits, even parity and no handshaking. If communications is via an SDI-12 device, you MUST select the SDI-12 option via the LCD screen. Model AD375MAL © Copyright
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5.
SDI-12 Compliant Commands
SDI-12 V1.3 COMPLIANT COMMAND SET (CRC commands are implemented) (Please note the letter ‘a’ in the commands below refer to the SDI-12 address 0, 1, 2,….9) Name
Command
Response
Break
Continuous spacing for at least 12 milliseconds
None
Acknowledge Active
a!
a
Send Identification aI!
allccccccccmmmmmmvvvxxx...xx (Refer Note 1.)
Change Address from a to b
aAb!
b
Address Query
?!
a
Start Measurement aM!
or
aMC!
atttn
Send Data
aD0!
a or a
Start Verification
aV!
atttn (Refer Note 2)
Start Concurrent Measurement
aC!
or
Continuous Measurements
aR0! aRC0!
aCC! or
atttnn a a (same as the D commands)
Note 1. a13HydrServAD375M4.112345 - -- ------------ ---------- --- -----| |
|
|
|
|
| |
|
|
|
| --- 5 digit Sensor ID (eg 12345)(as set in aX4 cmnd)
| --------- S/W Revision (eg 4.1)
| |
|
|
| |
|
|----------------- Model (eg. AD375MA)
| |
|------------------------------ Company ID (HydrServ)
| |------------------------------------- SDI-12 Version V1.3 Compliant |--------------------------------------- Unit Address
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SPECIAL SDI-12 X COMMANDS aXn! Return data associated with command 'n'. Quadrature Shaft Encoder will reply with a0001 The aDO! command must be issued to get the actual data. aXn+xxxx! Set parameter for command 'n'. Quadrature Shaft Encoder will reply with a0001 The aDO! command must be issued to get the actual data. Set/Get Current Value aX0!
Get the river level.
aX0+0012.345!
Set the river level to +12.345 m.
(NOTE : AD100A only uses 2 decimal places) Set/Get 4mA Level aX2!
Get the water level when 4mA will be output on 4-20mA loop
aX2+0005.0!
Set the 4mA Level to 5.0m (Acceptable values are 0000.0 to 9999.9)
(Value should be less than the 20mA Level) Set/Get 20mA Level aX3!
Get the water level when 20mA will be output on the 4-20mA loop
aX3+0025.0!
Set the 20mA level to 25.0m (Acceptable values are 0000.0 to 9999.9)
(Value should be greater than the 4mA Level)
Set/Get ID Number aX4!
Get the Shaft Encoder ID.
aX4+12345!
Set the Shaft Encoder ID. Acceptable values 0-65535. This value appears in the Identify command.
Set/Get Quadrature Direction aX8!
Get the Quadrature Direction.
aX8+0!
Set the Quadrature Direction (0=>Normal : 1=>Reversed)
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Increment the 4mA Calibration aX96+00!
Examine the present 4mA Calibration without altering it. (This also saves the calibration)
aX96+05!
Increment the 4mA Calibration by 5 steps
(This should be done while accurately measuring the current on the 4-20mA loop) (If the calibration is changed, always finish by sending aX96+00! to save it)
Increment the 20mA Calibration aX97+00!
Examine the present 20mA Calibration without altering it. (This also saves the calibration)
aX97+03! Increment the 20mA Calibration by 3 step (This should be done while accurately measuring the current on the 4-20mA loop) (If the calibration is changed, always finish by sending aX97+00! to save it)
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6.
RiverHawk – Inbuilt Data Logger
6.1
Hardware Connections
The DB9 female connector on the side of the AD375MAL is as follows :Pin Connection 1 2 3 4 5 6 7 8 9
6.2
Signal Name DB9 Female
PC Signal Direction
Not Used Tx (RS232 Serial data output) Rx (RS232 Serial data input) Looped Handshake Gnd Looped handshake Looped handshake Looped handshake Not Used
PC Signal DB9 Male CD Rx Tx DTR Gnd DSR RTS CTS RI
Communications
The DB9 female connector on the AD375MAL is the logger communications port and is setup as a DCE. This allows direct connection to a PC comm port using a DB9 male to DB9 female 1-to-1 cable.
DB9 Female
River Hawk AD375MAL
1 2
1 2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
DB9 Male
PC Comm Port
Connection of PC
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6.3
Setup and Configuring the Logger
Once the River Hawk AD375MAL has been connected to a computer, the parameters can be setup using WinComLog or any ‘dumb’ terminal emulation program. (NOTE: If a third party application is used, the handshake signals DTR and RTS should be forced high.) If using a third party program, it should be set for the appropriate baud rate, and 8/N/1 (bits/parity/stop), handshake off, and “local echo on”. On receipt of individual commands from the computer, the logger will respond with the present parameter setting. (Note that the command keywords permit both upper and lower case characters, or a combination of both.) A carriage return ( < CR > , Enter Key) immediately following an entry will action the command. Invalid entries return a “Command Error” response. A list of all logger commands may be viewed on the computer screen by using the unique on-board help system. Simply type ? and then press the Enter key. Data and parameter security is provided by means of a user password. Any data or parameters may be viewed without a password, but parameters may only be altered and data may only be cleared after the password has been entered correctly. The default password when the logger is supplied is “BOMM”. Parameters may be entered by typing the command, then the equals symbol (=) and then the new parameter, followed by the Enter key.
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6.4
Commands / Syntax
The following sections give detailed information on each of the MiniLog ML1-420 commands. Simply type the command and then press enter to view the parameter. To change a parameter, the password must first be entered, and then type the command followed by =, then the new parameter followed by Enter. Eg. SI=Sydney then press Enter.
6.4.1 On-line Help (?) Type a ? then press Enter to get the following help screen. The commands are listed in alphabetical order. On-line Help ? ML1-420 Data Logger Command Syntax [...] = optional to set parameter (Command may be upper and/or lower case) = press carriage return ======== General Commands =================================================== BAUD[=xxxx] (comms BAUD rate) BYE (exit passwd access) CLEARx[=30char] (Clear Seq.x=1,2,3,4) D[=d/m/y OR m/d/y] (Date) EV[=On/Off] (EVent output) FMT[=dmy/mdy] (date ForMaT) ID (logger ID) LOG[=On/Off] (En/Disable Logging) MW[=On/Off] (Memory Wrap) PASSWD=**** (4 char password) RE[=On/Off] (REsponse output) RESET (software RESET) SI[=16chars] (SIte name) SLEEP[=N] (Set Sleep time mins) ST (STatus window) T[=hh:mm:ss] (Time) TA[=hh:mm:ss] (Time Adjust) VER (s/w VERsion) ======== Battery Voltage and Temperature Commands =============================== BV (Batt. Voltages now) BVINT[=mmm] (BV/TempC log INTerval) TEMPC (TEMPerature oC now) ======== Digital Input Commands ============================================== CHID[=7 dig] (CHannel ID - Digital) INC[=x.x/mm] (INCrement+mult.) TDAY (Total toDAY) TOT (TOTal) TYPED[=16chars] (TYPE of Dig i/p) UD[=8char] (Units Digital) ======== 4-20mA Input Commands ============================================= CHIDRV[=7 dig] (CHannel ID – 4-20mA) RVHR[=xxx.xxx] (RiVer Height Ref) TXI[=mmm/tt] (Transducer Interval) TXR[=xxx.xxx] (Transducer Range) TYPE4[=16chars] (TYPE of 4-20 logger) U420[=8char] (Units 4-20) WL (Water Level now) ======== Dump/Clear Commands =============================================== CLR (Clear all Records) CLRV (Clear all Records) DUR/N/h:m/d/m/y (DUmp Rain log) DURV/N/h:m/d/m/y (DUmp RiVer log) DUBVI[....] (DUmp BattV.Internal) DUBVE[....] (DUmp BattV.External) DUTMP[....] (DUmp TempC) DUBVT[....] (DUmp BattV+TempC) DUALL[....] (DUmp ALL Data) (All dump commands have the same syntax) eg. DUR => Dump all Rainfall data DUR/3 => Dump last 3 days of Rainfall data DURV/10/12:00/15/2/11 => Dump 10 days of River data from 12:00 15-Feb-11 --------------------------------------------------------------------------------------------------------------------------Water Level (WL) = (((Measured 4-20mA)-4)/16) x Range (TXR) + Offset (+/-RVHR)
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6.4.2 Communications (BAUD, EV, RE, CLEAR) The “Baud” (BAUD) command allows the baud rate to be viewed or changed. Acceptable baud rates are 1200, 2400, 4800, 9600, 19200, 38400 and 57600. BAUD BAUD= 9600
Display the present baud rate Set the baud rate to 9600 baud
The “Event” (EV) flag allows the time stamps that are transmitted on the serial port to be enabled or disabled. When an event occurs, the time is transmitted on the serial when EV is on. When EV is off, nothing is transmitted on the serial port when an event occurs.
EV EV=ON EV=OFF
Display the state of the event flag. Enable event reporting Disable event reporting
The “Response” (RE) flag allows the error response to commands, to be enabled or disabled. When RE is on then you may see “Command Error” or “Syntax Error” messages appear if the MiniLog does not understand what was typed. When RE is off then there will be no response if the MiniLog does not understand what was typed. It is useful to turn this off when connected to a modem, so that the MiniLog and the modem don’t engage in endless “Command Error” conversations. RE RE=ON RE=OFF
Display the state of the response flag. Enable all error responses. Disable all error responses.
The “Clear” (CLEAR1/2/3/4) command sequences are used to control an external modem – that is, force it into a known state. (If there is no modem connected to your MiniLog, then these sequences can be left clear. Eg. Set CLEAR1= then CLEAR2= then CLEAR3= and finally CLEAR4=) The Clear sequences are performed when a Bye command is received, and/or if no comms is received within the Sleep timer period. There is a maximum of 30 characters in each of the 4 clear sequences. Special characters include ~ = 0.5 second pause and ^ = CTL character (Eg ^M = carriage return) The format of each sequence is CLEAR1 = Command Sent / Expected Reply / Timeout Model AD375MAL © Copyright
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Eg CLEAR1=+++~~ATH^M/OK/10
Sends +++, then waits 1 second, then send ATH then waits up to 10 seconds for an OK response.
The expected reply and the timeout parameters are optional. If no timeout is specified, then a default of 60 seconds is used. The timeout may be a one or two digit number. CLEAR1 CLEAR1=+++~~ CLEAR1=+++//5
Display the clear1 sequence Set the clear 1 sequence. Send +++ then wait 1 sec Send +++, no response and wait 5 seconds
After CLEAR1 sequence is performed, CLEAR2 then CLEAR3 and finally CLEAR4 sequence is performed.
6.4.3 Battery Voltage (BV, BVINT) The MiniLog battery voltage is measured and displayed when the battery voltage command (BV) is executed as well as during a status window command (ST) BV
Displays the internal and external battery voltages
The battery voltage log interval can be set with the (BVINT) command from 1 to 999 mins. The internal battery, external battery and temperature are logged at this interval. The logged data can be retrieved using the DUBVI, DUBVE, DUBVT and DUALL commands. BVINT BVINT=015
Displays the log interval in mins. Set the battery and temperature log interval to 15 mins.
6.4.4 Temperature (TEMPC) The MiniLog tempearture is measured and displayed when the temperature command (TEMPC) is executed as well as during a status window command (ST) TEMPC
Displays the internal temperature in degrees C
The temperature log interval is set with the (BVINT) command above, from 1 to 999 mins. The internal battery, external battery and temperature are logged at this interval. The logged temperature can be retrieved using the DUTMP, DUBVT and DUALL commands.
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6.4.5 Digital Channel Parameters (CHID, INC, TDAY, TOT, TYPED, UD) The “Channel ID” (CHID) is a 7 digit user definable number that should be set to uniquely set to identify the channel. CHID CHID=0012345
Displays the present Digital Channel ID Sets the Digital Channel ID to 0012345
The “Increment” (INC) is a parameter that specifies the quantity that each contact closure represents. This might be 0.2mm of rain for a tipping bucket rain gauge, or 10 litres of water for a flow meter, or 1 widget for a product counter. The parameter is split into 2 parts – the first part is the amount that each contact closure represents, and the second part is the number of contact closures that represent one event. The increment command has 5 different acceptable formats. INC INC=0.01/01 INC=0.2/01 INC=10/10
INC=100/01 INC=1000/05
Display the existing increment parameter. Defines say a TBRG bucket of 0.01 inches of water, and one tip represents one logged event. Defines say a TBRG bucket of 0.2 mm of water, and one tip represents one logged event. Defines say 10 litres of water per contact closure of a flow meter, and 10 such closures logged as one event. This means that each event represents100 litres of water. Defines say 100 litres of water per contact closure of a flow meter, and 1 such closure logged as one event. Defines say 1000 washers in a box, and 5 such boxes logged as one event. This means that each event represents 5000 washers.
The “Total” (TOT) command allows the Total number, of whatever is being counted, to be displayed. This is the total since the last reset – or the total since the last CLR record clear. TOT
Displays the total of what is being counted since the last record clear.
The “Total Today” (TDAY) command allows the Total number, of whatever is being counted, to be displayed. This is the total today since midnight. TDAY
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Displays the total of what is being counted since midnight.
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The “Type Digital” (TYPED) is a 16 character user defined string that allows the Status Window to be customised for your counting application. It simply changes the aesthetics of the Status Window. The MiniLog may be used for accumulating Rainfall, measuring Flow, counting People or Cars etc…. It is best to start this parameter with a capital letter – for aesthetic reasons. TYPED TYPED=Rainfall TYPED=Flow
Display the digital channel Type Set the digital type to Rainfall Set the digital type to Flow.
The “Units Digital” (UD) is a user defined 8 character string that assists in defining what is being counted. For example it may be mm or inches or litre/hr or widgets. This parameter is so the retrieved data has meaning. UD UD=mm
Display the present units. Set the units to mm.
6.4.6 4-20mA Channel Parameters (CHIDRV, RVHR, TXI, …..U420, WL) (CHIDRV, RVHR, TXI, TXR, TYPE4, U420, WL)
The “Channel ID River” (CHIDRV) is a 7 digit user definable number that should be set to uniquely set to identify the 4-20mA channel. CHIDRV CHIDRV=0012345
Displays the present 4-20mA Channel ID Sets the 4-20mA Channel ID to 0012345
The “River Height Reference” (RVHR) is a parameter that is an “offset” added to the river height as measured by the transducer. RVHR RVHR=5.000 RVHR= –520.000
Display the present River Height Reference. Sets the offset to 5.000 m Sets the offset to –520.000 m
The “Transducer Interval” (TXI) is a parameter that defines the frequency that analog measurements are made, as well as the time that the transducer is powered before a measurement is made. TXI TXI=015/07 Model AD375MAL © Copyright
Displays the present Transducer Interval. Set to measure the transducer every 15 minutes, and leave the AD375MAL Page-20
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transducer powered for 7 secs before measuring. Transducer will be powered at 00:00, 00:15, 00:30, 00:45, 01:00, 01:15,….
The “Transducer Range” (TXR) is a parameter that defines the 20mA transducer depth. Zero depth is usually represented by 4mA and maximum depth is represented by 20mA. This parameter is determined by the particular transducer connected to the ML1-420. TXR TXR=10.000 TXR=1.000
Displays the present Transducer Range. Set the 20mA depth to 10.000m Set the 20mA depth to 1.000m
The “Type 4-20mA” (TYPE4) is a 16 character user defined string that allows the Status Window to be customised for your measurement application. It simply changes the aesthetics of the Status Window. The MiniLog may be used for measuring River Level, Dam Level, etc…. It is best to start this parameter with a capital letter – for aesthetic reasons. TYPE4 TYPE4=River TYPE4=Dam
Display the MiniLog Type Set the logger to River Set the logger to Dam.
The “Units 4-20mA” (U420) parameter is a user defined 8 character string that assists in defining what is being measured. For example it may be mm or inches or litre/hr or widgets. This parameter is so the logged data has meaning. U420 U420=m
Display the present units. Set the units to m.
The “Water Level” (WL) command initiates an analog measurement of the 4-20mA transducer and displays the result to 3 decimal places. The message “Please Wait…” will appear while the transducer is warming up prior to the actual measurement. WL Please Wait… 12.981 The Water Level value displayed is created as follows : Water Level (WL) = (((Measured 4-20mA)-4)/16) x Range (TXR) + Offset (RVHR) The result displayed when a WL command is performed is also logged into memory with the time.
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6.4.7 Date/Time Parameters (D, FMT, T, TA) The MiniLog date and time is maintained by the microprocessor, and the LED flashing once a second indicates that the logger is alive and operational. (This flash is only 1mS in duration and consequently the power consumption is negligible.)
The “Date” (D) is displayed as day/month/year or month/day/year with slash separators. (This depends upon the format (FMT ) parameter.)
D D=22/09/05 D=9/3/5
Displays the date. Set the date. (Note: leading zeros are optional, BUT day+month+year must be entered)
The “Format”(FMT) parameter is used to change the date format to either day/month/year or month/day/year.
FMT FMT=dmy FMT=mdy
Display the present format as “dmy” or “mdy” Set the date format to day/month/year. Set the date format to month/day/year
The “Time” (T) is displayed in 24 hour format separated by colons. When entering the time and date, all fields must be entered. Note that if the time is entered as T= then it will be reset to midnight 00:00:00. T T=9:45:00 T=16:7:0
Displays the time in 24 hour format Set the time (Note: leading zeros are optional BUT hrs+mins+secs must be entered)
The “Time Adjust” (TA) command performs the same function as the time (T) command, except it determines if the clock is running fast or slow, and calculates an adjustment to add or subtract 1 second every xxx hours. In effect, this is a software adjustment to bring the clock into specification. A sample procedure would be : 1. Set the time accurately using the T=12:35:00 command 2. Wait at least 12 hours (the longer the time period the better the accuracy – this could be over many months.) 3. Set the time again using the TA=17:13:30 command Model AD375MAL © Copyright
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The new time adjustment will be calculated and displayed. (NOTE: If there is already a time adjustment in progress, then the MiniLog will take this into account when calculating the new adjustment.) After this procedure the clock accuracy will be improved considerably. TA TA= TA=10:13:55
Display the present time adjustment eg. +1 Sec every 0014 hours Remove the existing time adjustment. Set the time to 10:13:55 and calculate the new time adjustment.
6.4.8 Dump Log Records (DUR, DURV, ….DUALL, CLR, CLRV, MW, LOG) (DUR, DURV, DUBVI, DUBVE, DUBVT, DUTMP, DUALL, CLR, CLRV, MW, LOG)
The MiniLog ML1-420 logged data is stored in the on-board flash memory. The “Dump Rain log” (DUR) command, unloads the historical records from the start of the record to the most recent event stored. On completion of successful data retrieval, the memory remains intact until cleared by the clear rain log user command (CLR) – please note that the CLR command clears all logged data, rain, river, battery and temperature!! When the memory becomes full, with Memory Wrap off, the logger stops logging and tacks a “Mem Full” message onto the end of an event message. When Memory Wrap is on, and memory becomes full, the oldest records are erased and replaced by the newest records. The log is dumped in ascii format, as shown in section 4.2.1. DUR
Dump the complete rain log record.
The “DUR” command also allows for searching through the log and starting at a specific location instead of always dumping the complete log record. Syntax : DUR / No of days / Time / Date
Examples : DUR/2 DUR/1/1:40 DUR/30/12:00/1/1/11 DUR/12/15:30/13
Dump 2 full days of data, starting 2 days back from the current date at 00:00 Dump 1 day of data starting at 1:40am today Dump 30 days of data starting at 12:00pm on 1-Jan-2011 Dump 12 days of data starting at 3:30pm on the 13th day of the current month and year. (Note that the date format in this example is Day/Month/Year)
DUR/L
Dump all the data since the last dump
NOTE : The format of the date in the DUR command depends upon the date format in the MiniLog – that is either Day/Month/Year or Month/Day/Year.
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The “Dump Internal Battery Voltage log” (DUBVI) command, unloads the internal battery voltage log from the start of the record to the most recent event stored. On completion of successful data retrieval, the memory remains intact until cleared by the clear log command (CLR) – please note that the CLR command clears all logged data, rain, river, battery and temperature!! The log is dumped in ascii format, as shown in section 4.2.1. DUBVI
Dump the complete internal battery voltage log record.
(The DUBVI command has all the same search syntax as the DUR command.)
The “Dump External Battery Voltage log” (DUBVI) command, unloads the external battery voltage log from the start of the record to the most recent event stored. On completion of successful data retrieval, the memory remains intact until cleared by the clear log command (CLR) – please note that the CLR command clears all logged data, rain, river, battery and temperature!! The log is dumped in ascii format, as shown in section 4.2.1. DUBVE
Dump the complete external battery voltage log record.
(The DUBVE command has all the same search syntax as the DUR command.)
The “Dump Battery Voltages and temperature log” (DUBVT) command, unloads the internal and external battery voltage and temperature log from the start of the record to the most recent event stored. On completion of successful data retrieval, the memory remains intact until cleared by the clear log command (CLR) – please note that the CLR command clears all logged data, rain, river, battery and temperature!! The log is dumped in ascii format, as shown in section 4.2.1. DUBVT
Dump the complete internal+external BV + tempC log record.
(The DUBVT command has all the same search syntax as the DUR command.)
The “Dump Temperature log” (DUTMP) command, unloads the temperature log from the start of the record to the most recent event stored. On completion of successful data retrieval, the memory remains intact until cleared by the clear log command (CLR) – please note that the CLR command clears all logged data, rain, river, battery and temperature!! The log is dumped in ascii format, as shown in section 4.2.1. DUTMP
Dump the complete temperature log record.
The DUTMP command has all the same search syntax as the DUR command.
The “Dump All log” (DUALL) command, unloads all data from the start of the record to the most recent event stored. On completion of successful data retrieval, the memory remains intact until cleared by the clear log command (CLR) – please note that the CLR command clears all logged data, rain, river, battery and temperature!! The log is dumped in ascii Model AD375MAL © Copyright
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format, as shown in section 4.2.1. DUALL
Dump the complete log of all parameters.
The DUALL command has all the same search syntax as the DUR command.
The “Dump River log” (DURV) command, unloads the 4-20mA river level log from the start of the record to the most recent event stored. On completion of successful data retrieval, the memory remains intact until cleared by the clear log command (CLRV) – please note that the CLRV command also clears all logged data, rain, river, battery and temperature!! The log is dumped in ascii format, as shown in section 4.2.1. DURV
Dump the complete 4-20mA River log record.
The DURV command has all the same search syntax ad the DUR command.
The “Memory Wrap” (MW) command, enables or disables the wrapping of memory. When memory wrap is on, and the historical log becomes full, then the first data stored will be erased one block at a time. (A block of Flash memory holds approximately 400 events, and there are 1023 blocks available.) In this mode memory never becomes full, and the most recent data is always available. It is advisable that when changing the state of the Memory Wrap flag, the existing logged data be erased so that logging can start afresh. MW MW=ON MW=OFF
Display the present state of the memory wrap flag Turn memory wrap on. Turn memory wrap off.
NOTE: It is best to clear all of memory (using CLR) when changing this flag.
The “Clear Record” (CLR) command erases the complete memory log of all history – note that this command erases the Rain, River, Battery Voltage and Temperature logs. A question will appear to remind the user that all data will be erased – answer y or Y to delete the log and any other key to abort. CLR Erase complete log record. *** This will clear the Rain, River, Battery and TempC Logs *** : Are you sure ? (Y/N) Y
The “Clear River Record” (CLRV) command erases the complete memory log of all history – note that this command erases the Rain, River, Battery Voltage and Temperature logs. A question will appear to remind the user that all data will be erased – answer y or Y to delete the log and any other key to abort. CLR Erase complete log record. *** This will clear the Rain, River, Battery and TempC Logs *** : Are you sure ? (Y/N) Y Model AD375MAL © Copyright
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The “Log” (LOG) command allows logging to memory, to be turned on or off. This is used to test a logger without disturbing the existing logged data. The LED will still flash and the event will appear on the comms (if EV is on) so the operator can verify the event has been recognised. When the comms cable is removed (or the sleep timer expires), logging is automatically turned on ! LOG LOG=OFF LOG=ON
Display the present state of the Log parameter Turn logging off (Events are not logged to memory) Turn logging on (Events are logged to memory again)
6.4.9 Miscellaneous (ID, SI, PASSWD, BYE, SLEEP, RESET, VER) The “Logger Identification” (ID) is a unique number embedded in the MiniLog at the time of manufacture and can only be read. (The first 2 numbers are the year of manufacture)
ID
View the logger ID. Eg. MJ110001
The “Site Name” (SI) variable is used to either identify a specific logger or the location of the logger. This is a variable string up to 16 characters long and can be any alphanumeric character. The user can use this field for whatever they wish.
SI SI=Sydney
Display the present site name. Set the site name to “Sydney”
The password (PASSWD) prevents unauthorised access to altering the parameters or clearing the historical log record. Password access is cleared when the comms is unplugged and the MiniLog returns to its sleep mode, or the BYE command is performed. The password is a 4 character alphanumeric string that is upper / lower case sensitive. New passwords may be entered by first gaining access by entering the existing password, and then immediately entering the password command again with a new password.
PASSWD=BOMM
To attempt access, or change password if access already accepted.
If the password is set to the special value of ****, then the password function is disabled! That is, the user does not have to enter the password before they change parameters or clear memory. For example : PASSWD=BOMM PASSWD=**** Model AD375MAL © Copyright
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This may be reversed by first entering the **** password and then entering a new password. For example : PASSWD=**** PASSWD=BOMM
Enable access. Save BOMM as the new password.
If the MiniLog is connected to a modem, then it may have the comms cable permanently connected. In this situation, once the password is entered, access is permanently granted. The “Bye” (BYE) command forces the MiniLog to cancel the password access, and also performs the CLEAR1/2/3/4 sequence of commands. (When the sleep timer expires, password access is also cancelled.)
The “Sleep” (SLEEP) command provides a timer, so that a “Bye” is performed if there is no communications in the preset time. The timer is set in minutes. For example, if “sleep” is set to 5 minutes, and there is no communications for a 5 minute period, then password access will be cancelled, and the CLEAR1/2/3/4 will be performed. When Sleep is set to 0, the function is disabled. SLEEP = 5
Sets the sleep timer to 5 minutes (Acceptable values are 0 to 9)
The “Reset” (RESET) command performs a hardware reset, but does not affect the time, date, parameters or logged data. RESET
Perform a reset of the MiniLog. Note that this command is equivalent to switching the logger off and then on again.
The “Version”(VER) command allows the MiniLog firmware version to be displayed. VER
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Displays the MiniLog firmware version and date.
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6.4.10 Status Window (ST) The Status Window (ST) returns a summary of station set-up details together with a report of the present conditions. Each set-up parameter is identified by name followed by its unique command keyword, (parameter abbreviation). The Status window provides a 'plain English' response for visual interpretation when the ST command is issued. Command Example ST Site(SI): LoggerID(ID): Date(D): Time(T): Baud Rate (BAUD): Response(RE): Event Output (EV): Events Left: Memory Wrap (MW): Go to sleep after (SLEEP): Logging On/Off (LOG): S/W Revision (VER): Clear1: Clear2: Clear3: Clear4:
Sydney MJ110001 28/03/11 10:06:46 9600 On On 421763 Off 5 min On 1.00 +++~~ ATH^M/OK/9
Rainfall Channel ID (CHID): Rainfall Log Start: Rainfall Inc. (INC): Rainfall Today (TDAY): Rainfall Total (TOT): Rainfall Units (UD):
0012345 22/01/11 0.2/01 5.2 1260.7 mm
River Channel ID (CHIDRV): River Log Start: River Last (WL): River Units (U420): River Height Ref (RvHR)(offset): River Trans Ref (TxR)(range): River Trans.Int (TXI)mmm/tt:
0000002 22/01/11 3.726 m 0.417 10.000 015/05
Temperature (TEMPC): 24.3C BV+T Log Interval (BVInt)mmm: 060 Battery Volt (BV): 3.54/12.6V --------------------------------------------------------------------------------------------------------------------------
NOTE : The words “Rainfall” and “River” in the above Status Window, is the result of the TYPE parameter. This string can be changed to customise the Status Window to your requirements. Note that the data in the Status Window is grouped to describe each area of the ML1-20, that is “general configuration” on the left, “digital input configuration” at the top right, “4-20mA configuration” at the centre right, and “battery / temperature configuration” at the lower right.
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6.5
Data Output Format
6.5.1 Dump Log Record The following data represents the historical log record as output from a MiniLog ML1-420 data logger. The example below represents a data record as presented to a computer after invoking a Dump Log Record command (DUR). Each parameter is separated by a ‘space’ character with each line terminating with a carriage return line feed marker, (< crlf >). Additional housekeeping events, identified as ‘plain English’ text fields, are automatically logged to the record on the instance of a variety of events. The text fields Record Clear, Time Change, Date Change and Record End are examples of some of the text event indicators. The contact closure (or bucket tip from a rain gauge) is represented by a time stamp only. Look back through the log to obtain the date of the event. Other dump commands are shown on the following pages. ** Rainfall Record **
DUR
Station Set-up Header Logger Start Header
º º
Events (time stamp)
º
Daily Summary
º
End of Record Marker
Field Par. Station Set-up MELB Header 0012345 MJ110001
0.2 Start 09:35:23 24/3/11 0 Record Clear Event 10:27:42 Daily Summary 00:00:00 25/3/11 3 End of Record Record End Marker Logger Header
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Sydney 0012345 MJ110001 0.2< crlf > 09:35:23 24/3/11 0 Record Clear< crlf > 10:25:37< crlf > 10:27:42< crlf > 16:53:05< crlf > 00:00:00 25/3/11 3< crlf > 15:43:09< crlf > 15:44:23< crlf > 15:45:00< crlf > 22:22:55< crlf > 00:00:00 26/3/11 4< crlf > 22:24:00< crlf > 00:00:00 27/3/11 0< crlf > Record End< crlf >
Parameter Definition Site Name, variable length, user programmable. Channel ID Number or observational site number, 7 digits, user programmable. Logger ID, 6 digits, hard coded by manufacturer, where first two digits “MJ” represent an alphanumeric manufacturer ID followed by a six digit unit number. Recording Increment, 0.2 millimetres, user programmable. Logger Start Time, Hour:Minute:Second. Logger Start Date, Day/Month/Year. Start Count, event accumulator, 0 counts. Indicator to identify start event, normally “Record Clear”. Time Stamp of contact closure, Hour:Minute:Second. Time Stamp check at zero hours, Hour:Minute:Second. Date Stamp check at zero hours, Day/Month/Year. Daily event accumulator, (daily total = 3 events). Indicator to identify the end of the log record.
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** River Level / 4-20mA Record **
DURV
Station Set-up Header Logger Start Header
º º
Events (time + level)
º
º
End of Record Marker
** Internal Battery Voltage Record **
DUBVI
Station Set-up Header Logger Start Header
º º
Events (time + internal BattV)
º
Midnight Marker
º º
End of Record Marker
** External Battery Voltage Record ** º º
Events (time + external BattV)
º
Midnight Marker
º
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Sydney MJ110001< crlf > 09:35:23 24/3/11 Record Clear< crlf > 10:00:00 3.55< crlf > 11:00:00 3.55< crlf > 12:00:00 3.55< crlf > 23:00:00 3.54< crlf > 00:00:00 25/3/11 < crlf > 00:00:00 3.54 Record End< crlf >
DUBVE
Station Set-up Header Logger Start Header
End of Record Marker
Sydney 0000002 MJ110001 1< crlf > 09:35:23 24/3/11 Record Clear< crlf > 09:45:03 3.529< crlf > 10:00:03 3.535< crlf > 10:15:03 3.543< crlf > 10:30:03 3.552< crlf > 10:45:03 3.567 crlf > 11:00:03 3.563< crlf > 11:15:03 3.558< crlf > Record End< crlf >
º
Sydney MJ110001 < crlf > 09:35:23 24/3/11 Record Clear< crlf > 10:00:00 12.13< crlf > 11:00:00 12.12< crlf > 12:00:00 12.12< crlf > 23:00:00 12.11< crlf > 00:00:00 25/3/11 < crlf > 00:00:00 12.10 Record End< crlf >
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** Battery Voltage + Temperature Record ** Station Set-up Header Logger Start Header
º º
Events º (time + internal BattV + external BattV + temperature) Midnight Marker º º
End of Record Marker
** Temperature Record **
Sydney MJ110001 < crlf > 09:35:23 24/3/11 Record Clear< crlf > 10:00:00 3.55 12.13 25.1< crlf > 11:00:00 3.55 12.12 24.7< crlf > 12:00:00 3.55 12.12 24.4< crlf > 23:00:00 3.54 12.11 24.2< crlf > 00:00:00 25/3/11 < crlf > 00:00:00 3.54 12.10 23.1 Record End< crlf >
DUTMP
Station Set-up Header Logger Start Header
º º
Event (time + Temperature)
º
Midnight Marker º
End of Record Marker
** Dump All Records **
Sydney MJ110001 < crlf > 09:35:23 24/3/11 Record Clear< crlf > 10:00:00 25.1< crlf > 11:00:00 24.7< crlf > 12:00:00 24.4< crlf > 23:00:00 24.2< crlf > 00:00:00 25/3/11 < crlf > 00:00:00 23.1 Record End< crlf >
DUALL
Station Set-up Header Events (type, date, time, level)
End of Record Marker
DUBVT
º º
º
Sydney MJ110001 < crlf > 1, 24/03/11, 09:35:23, 0.2< crlf > 2, 24/03/11, 09:45:03, 3.529< crlf > 3, 24/03/11, 10:00:00, 3.55< crlf > 4, 24/03/11, 10:00:00, 12.13< crlf > 5, 24/03/11, 10:00:00, 25.1< crlf > 2, 24/03/11, 10:00:03, 3.535< crlf > 2, 24/03/11, 10:15:03, 3.539< crlf > 2, 24/03/11, 10:30:03, 3.546< crlf > 1, 24/03/11, 10:37:52, 0.2< crlf > 1, 24/03/11, 10:39:43, 0.2< crlf > Record End< crlf >
(=0.2mm rain) (=3.529m river) (=3.55V BVint) (=12.13V BVext) (=25.1C Temp) (=3.535m river) (=3.539m river) (=3.546m river) (=0.2mm rain) (=0.2mm rain)
The event types are : 0 = Housekeeping 1 = Rainfall / Digital input 2 = River / 4-20mA 3 = Internal Battery Voltage 4 = External Battery Voltage 5 = Temperature
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7.
Specification
7.1
Hardware Specification
Mechanical Follow Rate: Pulses/Rev: Resolution:
10 metres per minute 375 pulses per revolution (AD375MAL) AD375MAL - 1mm (375 pulses/rev) AD150MAL – 2.5mm (150 pulses/rev) AD100MAL – 0.01ft (100 pulses/rev) AD37_5MAL – 10mm (37.5 pulses/rev) Can be used in any size bore down to 100mm diameter. Electrical Operating Voltage: 9.6 to 16VDC (SDI-12 port) (12 VDC sealed lead acid 7Ah min) Current Drain: 6.0 mA average @ 12V input Output: RS232 from logger and SDI-12 simultaneously. 4-20mA Port: Not Available (Used by internal ML1-420 to measure Water Level) Battery Backup: Data integrity is guarantee by 1 internal AA lithium 3.6V battery. 1 month Water Level backup operation without external 12V (cond apply) Range: Up to +9999.999m Resolution: 1mm Max Error: +1mm LCD Display Screen: Backlight: Display: Parameters:
2 lines x 16 characters LCD Powered via SDI-12 port (9.6 to 16 VDC) Water level and battery voltage. User selectable via push buttons on the shaft encoder housing
In-built Data Logger (AD375MAL River Hawk Only) - Small and Compact. - Low quiescent consumption. - Data Memory size 4MB Serial Flash EPROM. - Events Record up to 400,000 events, 1 Second Resolution. - Sample Interval 1min to 24 hrs programmable. - Communications: Bidirectional RS232 Port, (Tx, Rx) - Optional: PSTN/GSM/Radio/GOES External Modem for remote telemetry. - 1x AA Lithium 3.6V battery (Logger Time Backup) Accessories - Floats and Counterweights - Float Pulley Wheels - Beaded or Borehole Float Line - Wire Gate Mounting Kits - Chain and Sprocket - Gear Drives - Mechanical Counter Kit Packing Details Dimensions: Weight:
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270mm (L) x 170mm (H) x 200mm (D) 2.0 kg
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Appendix A Surge Protection When any electronic equipment is installed at remote exposed locations, it is recommended that lightning / surge protection is installed to protect the equipment from surges that may occur during electrical storms and enter equipment on cables connected to the outside world. So it is this wiring we should focus our attention on protecting. The following diagram shows how to connect a transient suppressor to solar powered equipment and to mains powered equipment. Different suppressors are required, depending on the voltage to be protected. The transient suppressors and the metal cabinets should also be connected to a solid earth at the site.
Solar Panel
240V AC Mains Power Metal Enclosure
+
Metal Enclosure
Solid Earth AE N
+
-
Line Side DC Transient Barrier
“Keep Wiring separated”
Line Side Mains Surge Filter
“Keep Wiring separated”
Equip Side +
-
Equip Side N
A E Solar Battery Charger
+
Solid Earth
Mains Battery Charger
+
-
12V Battery
Equipment to be powered (AD375MAL + Data Logger)
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12V Battery
Equipment to be powered (AD375MAL + Data Logger)
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Appendix B SDI-12 to RS232 Interfacing The following schematic is for an SDI-12 to RS232 adapter that can be used for any Hydrological Services SDI-12 transducer. The adapter will allow the transducer SDI-12 port to be connected to a PC, and will communicate at 1200 baud, 7 bits and even parity. To bypass the strict timing requirements of SDI-12, simply change the “Comms Type” on the LCD to RS232.
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Set SDI-12 Address to 0
Set Comms Type to RS232
Settings for Hyperterminal
Comm Port depends on your PC
Sample SDI12 comms session entering :
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0R0!
