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Observator 100 years

Seametrics PT12 Smart Submersible Pressure/Temperature Sensor

The Seametrics 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.

Seametrics also carries a special version of the PT12 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.

Additional documents


  • Modbus® RTU (RS485) and SDI-12 v1.3 interfaces
  • Small diameter — 0.75” (1.9 cm)
  • Pressure and temperature
  • 316 stainless steel, fluoropolymer, and PTFE construction (titanium optional)
  • Polyethylene, polyurethane, and ETFE cable options
  • End code interchangeable with a 1/4” NPT inlet
  • Specification per OSW Technical
    Memo 96.05 is an option on the 15 psig (10.5 mHO) and 30 psig (21 mHO) units

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