Geotech Gauge Pressure Transducers

Geotech's submersible pressure transducers are designed for ruggedness and long life to meet the harsh environments encountered in liquid level measurement and control.

  • High static accuracy and repeatability
  • 100% computer tested, calibrated and temperature compensated
  • 750' (229m) maximum cable length
  • All wetted materials are #316 stainless steel
  • Sensor has ¼" NPT process fitting with protective cap
  • Vent line in cable allows barometric compensation of level readings
  • Field replaceable desiccant cartridge or Aneroid Bellows for moisture protection
  • Optional surge suppressor for lightning protection
Supply Voltage   12-36 Volt DC
Supply Current   25 mA
  1-5 Volt DC, 4-20 mA, and Modbus 485

Pressure Ranges (psi)
  0-3, 0-5, 0-15, 0-30, 0-50, 0-100, 0-150
Pressure Ranges (bar)

  0-.2, 0-.34, 0-1, 0-2, 0-3.5, 0-7, 0-10
(Custom ranges available)

  0.25% of full scale
0.1% of full scale available
Non-Linearity   .07% of full scale
Repeatability   0.015% of full scale
Pressure Hysteresis   0.010% of full scale
Zero Error   ±0.1% of full scale
Span Error   ±0.1% of full scale
Temperature Sensor Range   -40° to 257°F (-40° to 125°C)*
Temperature Accuracy

  ±1.8°F (0.5°C) nominal full scale
Temperature reporting is only available with RS485 communications.
Compensated Temperature   -4° to 185°F (-20° to 85°C)
Operating Temperature   -40° to 257°F (-40° to 125°C)
Response Time   2 milliseconds
Life   1 million pressure cycles

Sensor Length (Includes 2" Strain Relief)
With Surge Suppressor
Without Surge Suppressor
8.6" (21.8 cm)
7.7" (19.6 cm)
Sensor Diameter   .72" (1.8 cm)
Sensor Weight   4.3 oz. (122 g)
Proof Pressure   3x psi
Burst Pressure   5x psi
Media Compatibility   Liquids or gasses compatible with 316 stainless steel

  Polyurethane or Tefzel® (Vented)
Diameter   .335" to .360" (8.5mm to 9.14mm)
Conductors   4-24 AWG 7/32 tinned copper Red – White – Blue – Orange
Drain   24 AWG 7/32 tinned copper bare
Vent Tube   Nylon 6/6 vent tube

* Installation is not recommended in environments where liquids freeze solid.
Note: Probe is protected from reverse polarity supply connection.
  • Groundwater Monitoring
  • Surface Water Monitoring
  • Well Monitoring
  • Wetland Studies
  • Remediation Pump Control
  • Landfill Pump Control
  • Fluid Level Control

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> Installation and Operation Manual






Geotech Gauge Pressure Transducers
Geotech Gauge Pressure Transducer (L)
Geotech Gauge Pressure Transducer with optional
Surge Suppressor (R)
Aneroid Bellows Vent Line Desiccant Cartridge
Aneroid Bellows Option
Field Replaceable Vent Line Desiccant Cartridge