• Murphy

OPL Series

The OPL-series pressure Swichgage instruments are combination pressure indicating gages with adjustable low and high limit switches.

Limit switches can be wired directly to electric pilot circuits to operate alarms, shutdown or the start/stop of engines and electric motors. Surface mount or panel mount enclosure is available for most versions. All versions feature a 4-1/2 in. (114 mm) dial for easy viewing. Adjustable limit switches are accessible from the front of the Swichgage instrument. Limit contacts have self-cleaning motion to enhance electrical continuity.

  • CE (European Conformity) mark
  • CSA mark (for Canada and the United States)
  • UL mark
Specifications Downloads
Specifications Drawer: 


Case: Die cast aluminum; weatherproof.

Contacts: See Electrical page 3, for contact ratings.

Dial: 4-1/2 in. (114 mm) white on black, dual scaled psi /kPa. Other dial configurations available. Consult factory.

Gage Accuracy: ±2% for the first and last quarters of the scale, the middle half is ±1%.

Geared Movement: 302 and 304 stainless steel.

Lens: Optically clear polycarbonate.

Pointer: High visibility with a pointer calibration hub.

Process Connection: Available in 1/4 NPT and 1/2 NPT. See Table B, page 5.

Sensing Element: Select from bronze or 316 stainless steel bourdon tube.

Literature Drawer: 

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