Pressure Switch

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The PA-22 (left) PS is a programmable pressure switch; it has an analog transmitter output signal (0,5…4,5 V). The switch functions can be used to activate alarms or control relays at predetermined pressure levels.

There are two independent switches for Hi/Lo control functions. These are solid state and therefore not subject to wear. Outputs are selectable PNP or NPN (factory set; to be specified upon order). The optional DV-22 PP (Pictured Below) programmer (external supply) allows the user to change settings via two buttons and menu system. Alternatively, the programming unit is linked to a laptop/PC and can be used with KELLER’s “Pressure Switch Console” software.

Ranges: 1 bar…400 bar
Excitation: 8…28 V
Output: 0,5…4,5 V
Switch: 2 outputs (NPN or PNP) / 0,5 A
Error Band: 0…80 °C: 2 %
Response Time: 10 msec
Plug: M12, 5 pole



P.C. Connector









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Keller PA-22 PS