Datasheet: ABS Hydrostatic Sensors HSRSource: Sulzer Pumps / ABS USA
HSR is a sewage water resistant, PVC encapsulated, 2-wire loop powered, submersible, hydrostatic level sensor. It is designed for level measurement in liquids like stormwater and wastewater in pump sumps. When connected in series with a DC power supply, the HSR gives a 4 to 20 mA output signal which is proportional to the level of the liquid.
The output signal can be connected to the mA - input of set point relays, chart recorders, indicating instruments, PLC, pump-controls, etc. The number of devices in series and the length of the cable from sensor to the devices is dependant on the supply voltage. The silicate glass sensing element can withstand moderate overpressures.