Hydrostatic Pressure Sensors
: Hydrostatic Pressure Sensors
The pressure in a liquid increases with increased filling height. This hydrostatic pressure is transmitted to the measuring cell via a stainless steel diaphragm. Foam, build-up, fluctuating electrical properties of the liquid and the container design do not affect the measurement values.
The fill level of a liquid can be determined by the hydrostatic pressure if the density is known. The piezoresistive measuring cell is coupled to the measuring liquid via a stainless steel isolation membrane and diaphragm seal.
The value of the measuring cell can be converted via a signal conditioner into one of the following output signals:
- 4 ... 20 mA analog signal
- 4 ... 20 mA analog signal with HART
- PROFIBUS PA digital signal
The pressure sensors are available in the following versions:
- Externally mounted type
- Rod type
- Suspended type