PS pressure switches are for different technological water system control. They are used most in firefight water systems. With the SPDT relay contact, can operate two pump at once:
If the electric pump stop by any malfunction, the pressure in the firefight water system will cease. The pressure switch sense the drop, and the SPDT microswitch will switch on a pump drived by petrol engine.
![PS-PRESSURE-SWITCH](https://szivattyuvezerles.hu/wp-content/uploads/2014/06/PS-PRESSURE-SWITCH.png)
The fire sprinkler system supplied by the electric pump.
![PS-PRESSURE-SWITCH 2](https://szivattyuvezerles.hu/wp-content/uploads/2014/06/PS-PRESSURE-SWITCH-2.png)
The electric pump failed, the pressure dropped. PS pressure switch sense the pressure drop, and switched to the petrol engine pump.
Data sheet | PS/3 | PS/3D | PS/5 | PS/5D | PS/12 | PS/12D |
Max. factory pressure | 5 bar | 5 bar | 12 bar | 12 bar | 12 bar | 12 bar |
Pre-set pressure | 0.9 – 2 bar | 0.9 – 5 bar | 1.7 – 5 bar | 1.7 – 7.5 bar | 2.5 – 10 bar | 2.5 – 12 bar |
Min. pressure differential | 0.2 bar | 0.4 bar | 0.5 bar | 0.5 bar | 0.8 bar | 0.8 bar |
Max. pressure differential | 0.2 bar | 2.5 bar | 0.7 bar | 3.3 bar | 1.4 bar | 3.8 bar |
Max. voltage |
5 A – 250 V |