The Murphy 0-75 PSI Mechanical Pressure Swichgage 20P-75 is a diaphragm-actuated, pressure-indicating gage with a built-in electrical switch. This swichgage is used for tripping alarms and/or shutdown devices.
Part No.: 20P-75. Range: 0-75 psi (0-517 kPa).
Dial: White on black, dual scale; USA standard scale is psi/kPa. Case: Plated steel; mounting clamp included (except for direct mount models)
Temperature Range: Ambient: -40°F (-40°C) thru 150°F (66°C). Process: -40°F (-40°C) thru 250°F (121°C) Process Connection: 1/8-27 NPTM brass
Description
Sensing Element: Beryllium copper diaphragm Adjustable Limit Contact: SPST contact; pilot- duty only, 2 A @ 30 VAC/DC; Normally Close (NC) when the low limit is met. Normally Open (NO) when pointer is in normal operating range. Contacts are gold flashed silver. Limit Contact Adjustment: by a 1/16 in. hex wrench thru 100% of the scale. Limit Contact Wire Leads: 18 AWG (1.0 mm2) x 12 in. (305 mm). Unit Weight: 8 oz. (0.23 kg). Unit Dimensions: x 3 x 3 in. (76 x 76 x 76 mm)
