Position sensors and object recognition Fluid sensors and diagnostic systems
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Bus system AS-Interface Control systems Identification systems
 
Electronic pressure switch PNI with analogue input.
 
 

 
 Ideal for automatic switch point adjustment.

Application example
Variable pressures are used in the hydraulic clamping systems for machine tools: It is a significant advantage if the switch point can be adjusted electronically in response to changes in the valve position. Clamping pressure is to remain within a variable acceptable range (window). If the pressure is outside the preset window the switched output is de-energised. Special feature: The acceptable range is varied using an external analogue signal.

Differential pressure switch
By evaluating the analogue signal of an external pressure transmitter the sensor switches if the set differential pressure is too high or too low. Applications include monitoring of filters or balancing liquids in tanks. Since the reference measurement is an electrical signal rather than a physical variable it is easy to monitor a differential pressure between remote locations.

Functionality
The ifm pressure sensor offers a new means of signal evaluation. The two freely configurable switching outputs can be continuously and automatically adjusted using an analogue input signal (0/ 4....20 mA / 0....10 V). The display indicates either the input pressure, the output pressure or the differential pressure.

 PNI021 - Measuring range 250 bar
 PNI022 - Measuring range 100 bar
 PNI023 - Measuring range 25 bar
 PNI024 - Measuring range 10 bar

Further Information: Bulletin (PDF-File 181 kB).