Murphy 4-1/2 inch (114 mm) diameter dial pressure Switchgauge instruments accurately
and reliably measure and indicate pressures in applications such as gas compressors
control panels, pumping applications, industrial process applications, etc. The
Switchgauge versions incorporate adjustable switch contacts which operate in unison
with the indicating dial readout to operate alarms, shutdown or automation processes.
The 45PE series is a variation of our OPL series and has 2-SPDT snap-acting switches
instead of the pointer type contacts of the OPL. Contacts are adjustable from the face of
the 45PE. The 45PE is widely used for electric motor applications however can be used
for engine applications.
Ratio Switch Settings