2 PK MURPHY 100 PSI MAX OIL PRESSURE SWITCH GAUGE 20P-100 

The Murphy 0-100 PSI Mechanical Pressure Swichgage 20P-100 is a diaphragm-actuated, pressure-indicating gage with a built-in electrical switch. This swichgage is used for tripping alarms and/or shutdown devices. The gage mechanism is enclosed in a steel case coated to resist corrosion. A polycarbonate, break-resistant lens and a polished, stainless steel bezel help protect this rugged, built-to-last instrument. Accuracy and protection from moderate overpressure is assured by a unique, unitized diaphragm chamber. A built-in pulsation dampener helps eliminate pointer flutter and is removable for cleaning.

The gage pointer acts as a pressure indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. Contacts are grounded through the Swichgage case and have self-cleaning motion to ensure electrical continuity. The gage pointer makes with an adjustable contact to complete a pilot-duty circuit. Specifically designed to protect engines/equipment in oil field, marine, irrigation, construction and trucking applications to monitor engine lube pressure, water pump pressure, hydraulic pressure and air pressure.

 

FEATURES:

2 inch/51 mm dial

Combination Indicating Gage and Limit Switch

Switch Can Activate Alarms and/or Shutdown Equipment

Exceeds SAE Standards

 

PRODUCT SPECIFICATIONS:

Part No.: 20P-100

Range: 0-100 psi (690 kPa) [7.0 bar]

Dial: White on black, dual scale; U.S.A. standard scale is psi/kPa

Case: Plated steel; mounting clamp included (except for direct mount models)

Bezel: Polished stainless steel

Lens: Polycarbonate, high-impact

Oil: Silicon Oil

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

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)