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HyQuest Solutions Pty. Ltd.

Model AD375MA

© Copyright

Page 4

Issue 3 July, 2017

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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Содержание AD375MA

Страница 1: ...BSOLUTE SHAFT ENCODER MODEL AD375MA HYQUEST SOLUTIONS PTY LTD PO BOX 332 LIVERPOOL B C NSW 1871 AUSTRALIA Phone Int 612 9601 2022 Fax Int 612 9602 6971 Phone Nat 02 9601 2022 Fax Nat 02 9602 6971 Email sales hyquestsolutions com au Web www hyquestsolutions com au QUALITY SYSTEM ISO 9001 CERTIFIED ...

Страница 2: ...NTS 1 Introduction 3 2 Installation 4 3 Maintenance 12 4 LCD Screen 15 4 1 Configuring the AD375MA 16 5 SDI 12 Compliant Commands 17 6 Specification 20 6 1 Hardware Specification 20 Appendix A Surge Protection 21 Appendix B SDI 12 to RS232 Interfacing 22 Appendix C Changing Pulley Sizes 25 ...

Страница 3: ... power microprocessor controlled shaft encoder 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 a 4 20mA and SDI 12 signal at the same time SDI 12 Output Power Input All models 4 20mA Output 2 line x 16 character LCD with backlighting All Models ...

Страница 4: ... Page 4 Issue 3 July 2017 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 ...

Страница 5: ...ch 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 ...

Страница 6: ...s 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 batte...

Страница 7: ...HyQuest Solutions Pty Ltd Model AD375MA Copyright Page 7 Issue 3 July 2017 ...

Страница 8: ...HyQuest Solutions Pty Ltd Model AD375MA Copyright Page 8 Issue 3 July 2017 Shaft Encoder Typical Bore Hole Set Up Using Guide Pulleys ...

Страница 9: ...HyQuest Solutions Pty Ltd Model AD375MA Copyright Page 9 Issue 3 July 2017 ...

Страница 10: ...HyQuest Solutions Pty Ltd Model AD375MA Copyright Page 10 Issue 3 July 2017 160 246 246 94 150 ...

Страница 11: ...HyQuest Solutions Pty Ltd Model AD375MA Copyright Page 11 Issue 3 July 2017 ...

Страница 12: ...s and ease of operation 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 one at a time ensuring polarity is correct to ensure processor is not interrupted use a 3 6v Lithium battery AA package Fit a new restraining strap 150mm cabl...

Страница 13: ...n The internal lithium batteries are for backup purposes only it will allow the water level to be continuously measured for up to 2 months with no external 12V An adequate 12VDC 9 to 30VDC battery and charger option should be used if the optically isolated 4 20 mA current loop is to be powered continuously and independently of the telemetry module or data logging equipment The AD375MA must have 12...

Страница 14: ...tor The 4 20mA circuitry must be powered by the loop See Section 4 1 for configuring the 4 20mA interface ML420 Data Logger measuring the 4 20mA To conserve power the data logger switches power to the 4 20mA circuit only when it wants to make a measurement The 4 20mA current will be ready to read 200mS after applying loop power 4 20mA 4 20mA 12V Battery ML420 Data Logger Batt 12V Batt 0V AD375MA C...

Страница 15: ...en RS232 is selected the critical timing is removed 4mA 20mA Level 5 0 25 0 m 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 Quad Direction Normal Allows the quadrature direction for rising water to be changed Normal Reversed Set Level 12 392 m Allows the present River Level to be preset RS 232 SDI 12 SEL...

Страница 16: ... level will change eg Min level 1 000m Max Level 8 000m 6 Step to the 4mA 20mA Level menu Set the 4mA level to 1 000m Set the 20mA level to 8 000m When the water level is at 1 000m the 4 20mA current will be 4 000mA When the water level is at 4 500m the 4 20mA current will be 12 000mA When the water level is at 8 000m the 4 20mA current will be 20 000mA 7 The range in this example is 8 000 1 000 7...

Страница 17: ...mmmvvvxxx xx CR LF Refer Note 1 Change Address from a to b aAb b CR LF Address Query a CR LF Start Measurement aM or aMC atttn CR LF Send Data aD0 a value CR LF or a value CRC CR LF Start Verification aV atttn CR LF Refer Note 2 Start Concurrent Measurement aC or aCC atttnn CR LF Continuous Measurements aR0 or aRC0 a value CR LF a value CRC CR LF same as the D commands SEE SAMPLE SDI 12 COMMS SESS...

Страница 18: ...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 shou...

Страница 19: ...CR LF where 0001 234 is the water level aX17 1 Set the BattV measure feature to ON Result of aM is a0003 CR LF and aD0 is a 0001 234 3 6 12 8 CR LF where 0001 234 is the water level 3 6 is the internal lithium battery and 12 8 is the external battery voltage Increment the 4mA Calibration aX96 00 Examine the present 4mA Calibration without altering it This also saves the calibration aX96 05 Increme...

Страница 20: ...d SDI 12 simultaneously 4 20mA Port Optically isolated from internal electronics requires loop power Battery Backup Data integrity is guarantee by 2 internal AA lithium 3V batteries 2 months backup operation without external 12V Range Up to 9999 999m Resolution 1mm Max Error 1mm LCD Display Screen 2 lines x 16 characters LCD Backlight Powered via SDI 12 port 9 0 to 16 VDC Display Current water lev...

Страница 21: ... 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 240V AC Mains Power Mains Surge Filter Mains Battery Charger 12V Battery Solar Panel DC Transient Barrier Metal Enclos...

Страница 22: ...wing schematic is for an SDI 12 to RS232 adapter that can be used for any Hyquest Solutions SDI 12 transducer The adapter will allow a transducer 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 ...

Страница 23: ... Solutions Pty Ltd Model AD375MA Copyright Page 23 Issue 3 July 2017 Set SDI 12 Address to 0 Set Comms Type to RS232 Settings for Hyperterminal Sample comms session entering 0I 0R0 Comm Port depends on your PC ...

Страница 24: ...ination Compliance with SDI 12 Spec V1 3 implementing CRC occurs in AD375MA S W Rev 5 0 and higher 0MC 00001 Measure command with CRC request reply 1 meas ready in 0 secs 0D0 0 0001 028Kb Data command reply indicating water level is 1 028m with a CRC of Kb according to the SDI 12 specification 0RC0 0 0001 028Kb Continuous measure with a CRC request same result as an M and D command combination wit...

Страница 25: ...ft Custom Examples 1 If the pulley is 12 1 00 ft circumference then set to Custom 100 steps rev imperial 2 If the pulley is 24 2 00 ft circumference then set to Custom 200 steps rev imperial 3 If the pulley is 450mm circumference then set to Custom 450 steps rev metric 4 If the pulley is 200mm circumference then set to Custom 200 steps rev metric Navigating the menus example for Custom 1 Press the...

Страница 26: ...ey will return to 1 9 Press the select button to stop the number of steps flashing 10 Press the scroll button to step to the units menu 11 Press the select button to start the units flashing 12 Press the scroll button to select either imperial or metric 13 Press the select button to stop the units flashing 14 Press the scroll button until you return to the main menu The model will now be ADxxxxMA ...

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