pressure-sensitive switch question

[richt2000]

Hi,
Could someone shed me some light on how a pressure-sensitive switch works? What I am trying to do is to replace a pressure-sensitive switch with a regular switch. The pressure-sensitive switch has 3 wires comes out (Blue, Blue, Yellow) and my regular has two wire (yellow[ground] and blue[hot]). The switch is for DC power.
Thanks!
Rich

 

[maged541946]

It is a switch that change state at a pre set value of pressure, you need to know, if your old swith is sigle pole double through i.e. normally wire 1 is connected to wire 2 then when activated, wire 1 goes to 3 or the extra wire is earth.
One important thing is snap action, the pressure switch will snap with spring like action from one state to another, the new switch may not have that and the turn on or off may pass through a non desireable state of not really "ON" not really "OFF" which may burn the contacts due to arcing.
If pressure level is not critical, you can do with a spring and some trials.

Maged A. Mohamed

http://magedm.freeyellow.com

http://www.magedsoft.com