PT12 Submersible Pressure transducer

For Measuring Pressure/Level & Temperature with Modbus & SDI-12 Interface


Gauge: PSI 1, 5, 7, 15, 30, 50, 100, 300

Absolute: PSI: 30, 50, 100, 300

The PT12 Pressure/Temperature Sensor has been designed to provide trouble-free submersible operation in liquid environments. This sensor communicates via SDI-12 (v1.3) or Modbus® RTU (RS485)protocol. Pressure/level is measured with an extremely rugged and stable piezo-electric, media isolated pressure element and compensated for temperature using our proprietary calibration methodology. Temperature is measured using an on-board digital chip.

This industry standard SDI-12 device is easy to interface with SDI-12 recorders and can be daisy-chained on one cable up to 200 feet, making it a preferred choice for many environmental professionals with existing SDI-12 systems.


  • SDI-12 v1.3 interface

  • Modbus® RTU interface

  • Optional U.S.G.S. OSW accuracy enhanced calibration on the 15 PSIG unit.

  • Available with a variety of cable options, including polyethylene, polyurethane, and FEP

  • Available in absolute and gauge versions

  • 316 stainless steel, fluoropolymer, and PTFE construction (titanium optional)

  • Optional automatic barometric compensation for absolute units using a PT12-BV Barometric Sensor (SDI-12 only)

  • Available from 5 PSI to 300 PSI

  • Optional 1/4″ NPT inlet


  • USGS-OSW Calibration, Improves Level Accuracy 15 & 30 PSIG Ranges Only (PN 2B36901).

A special version of the PT12 is available, designed to measure barometric pressure in reference to absolute pressure. If you are using an absolute PT12, contact us for details on how our PT12-BV can facilitate obtaining barometrically compensated pressure/level.

The PT12 can be used in a variety of applications including:

  • Monitoring groundwater, well, tank and tidal levels

  • Pump testing

  • Flow monitoring

What would you like to do next?