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LIMITED WARRANTY/DISCLAIMER — 
PT12-BV BAROMETRIC COMPENSATOR/VACUUM SENSOR

A.   Seller warrants that products manufactured by Seller when properly installed, used 
and maintained

 with a properly installed desiccant tube

, shall be free from defects in 

material and workmanship.   Seller’s obligation under this warranty shall be limited to 
replacing or repairing the part or parts or, at Seller’s option, the products which prove 
defective in material or workmanship within ONE (1) year from the date of delivery, 
provided that Buyer gives Seller prompt notice of any defect or failure and satisfactory 
proof thereof.   Any defective part or parts must be returned to Seller’s factory or to an 
authorized service center for inspection.   Buyer will prepay all freight charges to return 
any products to Seller’s factory, or any other repair facility designated by Seller.   Seller 
will deliver replacements for defective products to Buyer (ground freight prepaid) to the 
destination provided in the original order.   Products returned to Seller for which Seller 
provides replacement under this warranty shall become the property of Seller.

This limited warranty does not apply to lack of performance caused by abrasive materials, cor-
rosion due to aggressive fl uids, mishandling or misapplication.   Seller’s obligations under this 
warranty shall not apply to any product which (a) is normally consumed in operation, or (b) has a 
normal life inherently shorter than the warranty period stated herein.

In the event that equipment is altered or repaired by the Buyer without prior written approval by 
the Seller, all warranties are void.   Equipment and accessories not manufactured by the Seller are 
warranted only to the extent of and by the original manufacturer’s warranty.

THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, WHETH-
ER ORAL, WRITTEN, EXPRESSED, IMPLIED OR STATUTORY.   IMPLIED WARRANTIES 
OF FITNESS AND MERCHANTABILITY SHALL NOT APPLY.   SELLER’S WARRANTY 
OBLIGATIONS AND BUYER’S REMEDIES THEREUNDER (EXCEPT AS TO TITLE) ARE 
SOLELY AND EXCLUSIVELY AS STATED HEREIN.   IN NO CASE WILL SELLER BE 
LIABLE FOR CONSEQUENTIAL DAMAGES, LABOR PERFORMED IN CONNECTION 
WITH REMOVAL AND REPLACEMENT OF THE SENSOR SYSTEM, LOSS OF PRODUC-
TION OR ANY OTHER LOSS INCURRED BECAUSE OF INTERRUPTION OF SERVICE.   
A NEW WARRANTY PERIOD SHALL NOT BE ESTABLISHED FOR REPAIRED OR 
REPLACED MATERIAL, PRODUCTS OR SUPPLIES.   SUCH ITEMS SHALL REMAIN 
UNDER WARRANTY ONLY FOR THE REMAINDER OF THE WARRANTY PERIOD ON 
THE ORIGINAL MATERIALS, PRODUCTS OR SUPPLIES.

B.   With respect to products purchased by consumers in the United States for personal use, the 
implied warranties including but not limited to the warranties of merchantability and fi tness for a 
particular purpose, are limited to twelve (12) months from the date of delivery.

Some states do not allow limitations on the duration of an implied warranty, so the above limita-
tion may not apply to you.   Similarly, some states do not allow the exclusion or limitation of 
consequential damages, so the above limitation or exclusion may not apply to you.   This limited 
warranty gives you specifi c legal rights; however, you may also have other rights which may vary 
from state to state.

Summary of Contents for AquiStar PT12-BV

Page 1: ...AquiStar PT12 BV Barometric Compensator Vacuum Sensor INSTRUCTION MANUAL ...

Page 2: ...peration 5 Installing the Box Version 5 Installing the Tube Version 5 Sensor Datalogger Configuration 5 Maintenance 6 Trouble Shooting 7 Erratic Readings 7 Zero Readings 7 Grounding Issues 7 Appendix A Technical Specifications 8 Diagram PT12 BV Tube Version 8 Diagram PT12 BV Barometric Vacuum Unit 8 Cable Wiring Information 9 Wiring for Barometric Compensation Units SDI 12 only 9 Wiring for Barome...

Page 3: ...ng of data No need to use a vented cable or worry about maintaining desiccant tubes This version features an SDI 12 communication interface making it ideal for many existing environmental systems Initial Inspection and Handling Upon receipt of your equipment inspect the shipping package for damage If any damage is apparent note the signs of damage on the appropriate shipping form After opening the...

Page 4: ...mergence We are all submerged in the atmosphere As we increase our elevation the pressure exerted on our bodies decreases as there is less of this fluid above us It should be noted that atmospheric pressure at a given level does vary with changes in the weather One standard atmosphere pressure at sea level on a normal day is defined to be 14 7 PSI pounds per square inch There are several methods t...

Page 5: ... Also recall that changes in weather cause the absolute atmospheric pressure to change In water the absolute pressure Pa at some level of depth d is given as follows see Figure 2 Pa Patm kd where k is simply a constant i e 2 307 ft of water 1 PSI Pressure Diagram Detail A INW s standard gauge submersible pressure devices utilize a vent tube in the cable to allow the device to reference atmospheric...

Page 6: ...ing the transducer body with tie wraps or tape will not hurt it INW can provide an optional 1 4 NPT input adapter that is interchangeable with the standard end cone for those applications where it is necessary to directly attach the transducer to a pipe tank or other pipe port Sensor Datalogger Configuration The PT12 submersible pressure temperature transducer is designed for use with SDI 12 or Mo...

Page 7: ...ility or accuracy contact INW If the units have been exposed to hazardous materials do not return them without notification and authorization Cable Cable can be damaged by abrasion sharp objects twisting crimping or crushing and pulling Take care during installation and use to avoid cable damage ...

Page 8: ... equipment need to be protected from high power spikes that may be caused by lightning power line surges or faulty equipment Without a proper grounding system a power spike will find the path of least resistance to earth ground whether that path is through sensitive electronic equipment or the person operating the equipment In order to ensure safety and prevent equipment damage a grounding system ...

Page 9: ...ube Version Air Inlets Cable to logger PT12 BV Tube Version Diagram PT12 BV Barometric Vacuum Unit PT12 BV Barometric Vacuum Unit To logger Vacuum Input Optional connection to absolute PT12 Pressure Temperature unit if configured for barometric compensation ...

Page 10: ...able Wiring Information Cable wiring color codes and connections Wiring for Barometric Compensation Units SDI 12 only Bulkhead wiring color codes and connections For Modbus For SDI 12 For Modbus For SDI 12 ...

Page 11: ... automatic barometric compensation the surface installed PT12 BV communicates with the down hole PT12 Pressure Temperature Sensor via Modbus The surface PT12 BV then communicates with an SDI 12 host or logger to give compensated pressure readings for the down hole sensor See Appendix B for SDI 12 command information ...

Page 12: ... pigtail Custom length on communication pigtail Extended temperature range Enhanced temperature calibration HIF calibration TUBE Body Material 316 stainless steel or titanium Dimensions tube 8 15 x 0 75 diameter 20 7 x 1 9 cm Wire Seal Materials Fluoropolymer and PTFE Terminating Connector Available Weight 0 80 lbs 0 4 kg Options 1 4 NPT in place of closed end cone Extended temperature range Enhan...

Page 13: ...utput 32 bit IEEE Floating point SDI 12 Output ASCII Internal Math 32 bit floating point Operating Voltage 9 16 VDC Compensated Temperature Range 0 C to 40 C for extended ranges contact INW Operating Temperature Range 15 C to 55 C Freezing protection kit required if water below freezing Storage Temperature Range 40 C to 80 C MISCELLANEOUS Measurement Latency Approx 1 3 seconds Default Address Each...

Page 14: ...ange Address aAb b cr lf change address from a to b Request measurement aM a0023 cr lf request pressure temperature voltage measurement aD0 a 7 15863 25 0000 12 0512 cr lf read pressure psi temperature C voltage V aM1 a0021 cr lf request pressure measurement only aD0 a 7 15863 cr lf read pressure psi aM2 a0021 cr lf request temperature measurement only aD0 a 25 0000 cr lf read temperature C aM3 a0...

Page 15: ...emperature C voltage V aMC1 a0021 cr lf request pressure measurement only aD0 a 7 15863 crc cr lf read pressure psi aMC2 a0021 cr lf request temperature measurement only aD0 a 25 0000 crc cr lf read temperature C aMC3 a0021 cr lf request power supply voltage measurement aD0 a 12 0512 crc cr lf read power supply voltage V aMC4 a0ttt4 cr lf request averaged data ttt depends upon programmed average d...

Page 16: ...ration aD0 a 7 15863 7 23215 7 05128 25 0000 cr lf read Ave Pressure Max Pressure Min Pressure Ave Temperature C5 C6 and C7 only available on PT12 BV PT12 combination units aC5 a00203 cr lf request barometrically compensated down hole pressure down hole temperature surface temperature measurement aD0 a 2 58613 19 2100 21 0512 cr lf read barometrically compensated down hole pressure down hole tempe...

Page 17: ... Pressure Min Pressure Ave Temperature CC5 CC6 and CC7 only available on PT12 BV PT12 combination units aCC5 a00203 cr lf request barometrically compensated down hole pressure down hole temperature surface temperature measurement aD0 a 2 58613 19 2100 21 0512 crc cr lf read barometrically compensated down hole pressure down hole temperature surface temperature aCC6 a00204 cr lf request non baromet...

Page 18: ... Read Modify Calibration Values aXCnn value a value cr lf read modify calibration value nn examples aXC00 a 1 591600e 5 CR LF read value of calibration register 00 aXC00 1 704e 4 a 1 704000e 4 CR LF set value of calibration register 00 Set number of significant digits aXSt at cr lf set of significant digits for SDI 12 report data t 1 7 ...

Page 19: ...ory cal offset coefficient 2 0 000000E 00 09 mField Field pressure cal slope 1 000000E 00 10 bField Field pressure cal offset 0 000000E 00 11 mT Field temperature cal slope 1 000000E 00 12 bT Field temperature cal offset 0 000000E 00 13 T_Alpha Factory Temperature Cal Alpha 0 000000E 00 14 T_Offset Factory Temperature Cal Offset 0 000000E 00 15 T_ZeroSlope Factory Temperature Cal ZeroSlope 0 00000...

Page 20: ...libration Pressure units scale 40203 4 a Factory calibration Pressure linearization 1 40205 6 b Factory calibration Pressure linearization 2 40207 8 m0 Factory calibration Pressure slope 0 40209 10 m1 Factory calibration Pressure slope 1 40211 12 m2 Factory calibration Pressure slope 2 40213 14 b0 Factory calibration Pressure offset 0 40215 16 b1 Factory calibration Pressure offset 1 40217 18 b2 F...

Page 21: ...d the statistical data values are not updated 40401 a Set sensor address a Write Only 40501 b Set baud rate b Write only 0 38400 1 19200 default 2 9600 3 4800 4 2400 5 1200 40601 w Set auto enable Causes sensor to be enabled automatically for w seconds after a read of any parameter data register W 0 disables auto enable This is normally set to 10 seconds at the factory For lowest power usage set t...

Page 22: ...equency is less than the auto enable value the sensor will stay on continously and your readigns will always be fresh with the exception of the very first reading If your read frequency is greater than the auto enable value the following reading sequence is recommended 1 Request a reading This begins the wakeup process on the sensor and returns the value currently in the register which will be old...

Page 23: ... equipment is altered or repaired by the Buyer without prior written approval by the Seller all warranties are void Equipment and accessories not manufactured by the Seller are warranted only to the extent of and by the original manufacturer s warranty THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES WHETH ER ORAL WRITTEN EXPRESSED IMPLIED OR STATUTORY IMPLIED WARRANTIES OF FITNESS AND...

Page 24: ...23 Notes ...

Page 25: ...24 Notes ...

Page 26: ...425 822 4434 FAX 425 822 8384 info inwusa com INW 1997 2015 by Instrumentation Northwest Inc All rights reserved Instrumentation Northwest and INW are trademarks registered with the U S Patent Trademark Office Doc 9B0008r6 02 21 2015 PN 3A346 NI ...

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