Winston wrote:
Tom Gardner wrote:
I want to sense pressure in a line that feeds part clamps and turn on
a green light and/or have a red light go out so the operator will try
to remember to clamp the parts.
(...)

Three bucks for a 100 PSI brake light switch. Only 911 are left.
http://www.surpluscenter.com/item.as...-2400&catname=
Umm, these are good to thousands of PSI, my guess is the trip pressure
may be anywhere from 50 - 250 PSI on each unit. They may not work in a
system with just 100 PSI line pressure.

Jon