4-20mA Titanium Piezometer
The titanium piezometer is used to monitor water levels and pressure, pore-water pressures in corrosive environments such as salt water, rapid changes in pore-water pressure such as those produced by earthquakes, and water levels in pumping tests.
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.
Advantages of the Titanium Piezometer include:
- 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 continuously.
Please refer to the ordering information tab below before making your selection.
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| Pressure Transducer | Part Number |
| 20 psi | 56410020 |
| 50 psi | 56410050 |
| 100 psi | 56410100 |
| 250 psi | 56410250 |
| Signal Cable | |
| Polyvinyl Chloride Jacket | 50613824 |
| PRESSURE TRANSDUCER | |
|---|---|
| Sensor Type | Diaphragm pressure transducer incorporating Micron Technology semi-conductor strain gauges with a 4-20mA output. The built-in temperature device is a 3K ohm thermistor |
| Range | 20, 50, 100, 250 psi |
| Resolution | 0.02% FS with a Campbell CR1000 and a 120 ohm resistor |
| Linearity | ± 0.5 % FS BFSL |
| Compensated Temp Range | 30 to 130°F |
| Over-Range | 2 x rated range long |
| Long Term Stability | ± 2% FS/year or better supply |
| Supply Voltage | 12-24 V nominal supply, 8 V min at the transducer |
| Materials | Wetted metal parts are made from titanium. The filter is polyethylene |
| Dimensions | 0.625″ diameter x 5.75″ long |
| SIGNAL CABLE | ||
|---|---|---|
| Polyvinyl Chloride Jacket | Shielded 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 | |
This piezometer is typically suspended in a well. The 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 the 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.
