PT12 Pressure & Temperature

The PT12 Pressure & Temperature sensor for Water level monitoring. Designed to resist the elements so the PT12 delivers accurate water level (pressure) and temperature readings in rugged environments.

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Advantages

The PT12 can transform your analog sensors into a digital sensor system. Easy to connect with SDI-12 recorders— convenient for an existing SDI-12 system plus a Modbus® RTU communication interface for further flexibility. Delivers great noise immunity, thermal performance, and transient protection.

  • Designed for rugged conditions, the PT12 delivers accurate pressure and temperature
  • SDI-12 v1.3 interface
  • Modbus® RTU interface
  • Optional U.S.G.S. OSW accuracy enhanced calibration on the 15 PSIG unit.
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PT12 Pressure & Temperature

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+44 (0) 1428 661 660 Call Van Walt
+64 (0)3443 5326 Call Van Walt
+27 21 518 1347

PT12 Pressure & Temperature Equipment Options:

Applications

  • Monitoring groundwater, well, tank and tidal levels
  • Pump testing
  • Flow monitoring

Specifications

Housing & Cable
Weight
0.8 lb. (0.4 kg)
Body Material
316 stainless or titanium
Wire Seal Material
Fluoropolymer and PTFE
Cable
Submersible: polyurethane, polyethylene, or ETFE; 4 lb./100 ft., 1.8 kg/30 m; 2000 ft max for Modbus®
Desiccant
1-3 mm indicating silica gel
Field Connector
Available as an option
Temperature
Operating Range
Recommended: -15 ̊ to 55 C̊ (5 ̊ to 131 ̊F) Requires freeze protection kit if using pressure option in water below freezing.
Storage Range
-40 ̊ to 80 ̊C (-40 ̊ to 176 ̊F)
Power
Voltage
9-16Vdc, 24Vdc over voltage protection, electromagnetic & transient protection IEC-61000 – 4-3, 4-4, 4-5, 4-6
Supply Current
Active 3mA average/ 10mA peak; sleep 150 μA
Communication
Modbus®
RS485 Modbus® RTU, output=32bit IEEE floating point
SDI-12
SDI-12 (ver. 1.3) – ASCII
Output Channels
Temperature
Depth/Level1
Element
Digital IC on board
Silicon strain gauge transducer, 316 stainless or Hastelloy
Accuracy
±0.5°C — 0° to 55°C (32° to 131°F)
±2.0°C — below 0°C (32°F)
±0.05% FSO (typical, static)
±0.1% FSO (maximum, static)
(B.F.S.L. 20°C)
Resolution
0.06°C
0.0034% FS (typical)
Ranges
-15° to 55°C (5° to 131°F)

Gauge

  • PSI: 12, 5, 15, 30, 50, 100, 300
  • FtH2O: 2.32, 12, 35, 69, 115, 231, 692
  • mH2O: 0.72, 3.5, 10.5, 21, 35, 70, 210

Absolute3

  • PSI: 30, 50, 100, 300
  • FtH2O: 35, 81, 196, 658
  • mH2O: 10, 24, 59, 200
Compensated
0° to 40°C (32° to 104°F)
Max operating pressure
1.1 x full scale
Over pressure protection
3x full scale up to 300psi – for > 300psi (650 ft or 200 m) contact factory
Burst pressure
1000 psi (approx. 2000 ft or 600 m)
Environmental
IP68, NEMA 6P
* Specifications subject to change. Please consult out web site for the most current data (inwusa.com). Modbus is a registered trademark of Schneider Electric.
1 Higher pressure ranges available upon request
2 ±0.25% accuracy FSO (max) at this range
3 Depth range for absolute sensors has 14.7 PSI subtracted to give actual depth allowed

Resources

Video

Manuals & Downloads

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+44 (0) 1428 661 660 +64 (0)3443 5326 +27 21 518 1347