4-20mA Titanium Piezometer


The 4-20mA Titanium Piezometer is designed for compatibility with industrial data loggers, the titanium piezometer is used to monitor water levels and pressure. Typical applications include:

  • Monitoring pore-water pressures in corrosive environments such as salt water.
  • Monitoring rapid changes in pore-water pressure such as those produced by earthquakes.
  • Monitoring water levels in pumping tests.
4-20mA Titanium Piezometer


This piezometer is typically suspended in a well. Signal cable from the piezometer is terminated at a readout station, where it can be connected to a data logger or readout device. Water pressure acts on diaphragm of the piezometer and semiconductor strain gauges bonded to the inside of the diaphragm sense the pressure and output a signal that is proportional to the pressure on the diaphragm. The signal is transmitted to the data logger or readout device via a 4-20mA loop circuit.


High Resistance to Corrosion: All metal parts, including the diaphragm, are made from titanium.

High Resistance to Noise: The electronics of the piezometer are highly resistant to electrical noise, such as that generated by pumps.

Compatible with Industrial Data Loggers and Readouts: The titanium piezometer incorporates a 4-20mA transmitter to provide compatibility with standard industrial data acquisition systems.

Suitable for Dynamic Monitoring: The piezometer can be read continously.

For more information

Please download the datasheet and manual for the 4-20mA Titanium Piezometer. They can be viewed and printed with Adobe Acrobat Reader.

4-20mA Titanium Piezometer Specifications

20 psi56410020
50 psi56410050
100 psi56410100
250 psi56410250
Sensor TypeDiaphram pressure transducer incorporating Micron Technology semi-conductor strain gauges with a 4-20mA output. The builtin temperature device is a 3K ohm thermistor
Range20, 50, 100, 250 psi
Resolution0.02% FS with a Campbell CR1000 and a 120 ohm resistor
Linearity± 0.5 % FS BFSL
Compensated Temp Range30 to 130°F
Over-Range2 x rated range
Long Term Stability± 2% FS/year or better
Supply Voltage12-24 V nominal supply, 8 V min at the transducer
MaterialsWetted metal parts are made from titanium. The filter is polyethylene
Dimensions0.625" diameter x 5.75" long
Polyvinyl Chloride Jacket50613824Shielded cable with four 22-gauge tinned-copper conductors and polyvinyl chloride (PVC) jacket. Two wires are used for the 4-20mA loop circuit. The other two wires are used for the thermistor