Volume Sensor


Tri-clamp volume (pressure) sensor, PSF-20


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This tri-clamp sensor can be used to directly measure liquid volume level in a vessel (such as a kettle) via hydro-static pressure sensing. It has a 1.5″ Tri-Clamp Mount and a flush SS diaphragm which enables simple cleaning and functions in sanitary applications. It can be mounted vertically (bottom mount) or horizontally (side mount). The sensor can measure liquids up to boiling temperatures via an embedded radiator which keeps the sensor module cool. It comes with a pre-wired DIN connector and ~15 ft. cable. The sensor output is analog voltage which can be wired directly to a BruControl interface.

The sensors measure liquid column above the sensor. The 50 millibar version (PSF-20-5) can measure approximately 18 in. / 455 mm above the sensor. The 100 millibar version (PSF-20-10) can measure approximately 36 in. / 910 mm above the sensor.  The volume which is measured is dependent on the vessel diameter. To calculate the volume and calibrate the sensor, use the Sensor Calibration Tool.





– Model PSF-20-5: 0 – 20 in. H2O / 0-50 mbar
– Model PSF-20-10: 0 – 40 in. H2O / 0-100 mbar
Output: 0 – 5 VDC (analog)
Maximum pressure: 200% full scale
Accuracy: +/- 0.5% full scale
Power: 12 – 30 VDC
Mount: 1.5″ Tri-Clamp (1.984 in. / 50.4 mm)
Media temperature: -40 – 255°F / -40 – 125 °C
Stability: <0.2% FS / year
Protection: IP65
Construction: 304 SS
Height: 4 1/4 in. / 105 mm

Note: The diaphragm is very sensitive to impact or contact/pressure above 2x rated. This will damage the sensor. Do not use in applications where it cannot be handled or protected from such contact or impact.

Additional information

Weight 1000 g
Dimensions 12.5 × 8 × 3 cm

50 mbar, 100 mbar