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Unread 18-02-2014, 12:34
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Re: One Last Pneumatics Question at the 11th Hour

The switch could break in either a closed or open position. When pressurizing the system, use a multimeter on the pressure switch to measure the resistance. If you see it flip by the time you get to 120 PSI, you'll know the issue is in your code or the wiring somewhere, and not in the switch.

Also, last year I came across a team whose pressure switch seemed to not be working. We swapped in a new one and it still didn't seem to be working. We later found out the pressure gauge they had was busted - it was reading 120 PSI, but the pressure was actually significantly lower. Once the gauge was swapped out, we could see the switch was actually operating correctly.
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