Murphy 140-300 Deg. F Mechanical Temperature Swichgage 2 in. with 16 Ft Capillary and Plated Steel Case - 20T-300-16-1/2

The Murphy Mechanical Temperature Swichgage 20T-300-16-1/2 is a diaphragm-actuated, temperature-indicating gauge with built-in electrical switch for tripping alarms and/or shutdown devices. The gauge mechanism is enclosed in a steel case coated to resist corrosion and it has a 16 foot capillary length with a standard 1/2-14 NPT thread. A polycarbonate, break- resistant lens and a polished, stainless steel bezel help protect this rugged, built-to-last instrument. This vapor actuated gage features a sealed capillary tube and a sensing bulb. When subjected to heat, the liquid in the sensing bulb changes to vapor creating pressure against the diaphragm mechanism. The diaphragm translates this vapor pressure into a mechanical gage reading.

The gage pointer acts as a temperature indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. Contact(s) are grounded through the Swichgage case. They have self-cleaning motion to enhance electrical continuity.

PRODUCT FEATURES:

• 2 inch/51 mm dial
• Combination Indicating Gage and Limit Switch
• Switch Can Activate Alarms and/or Shut Down Equipment
• Contact Grounds Through Case

PRODUCT SPECIFICATIONS:

• Part No.: 20T-300-16-1/2
  
• Range: 140 – 300°F (60 – 149°C)
  
• Dial: White on black; U.S.A. standard scale is dual scale °F/°C
• Case: Plated steel; mounting clamp included (except for direct mounting models)
• Bezel: Polished stainless steel
• Pointer: Tempered nickel silver
• Lens: Polycarbonate, high-impact
• Sensing Element: Beryllium copper diaphragm
• Capillary: PVC armored copper 16 ft.
• Thread: 1/2-14 NPT
• Sensing Bulb: Copper
• Unit Weight: 12.7 oz. (0.39 kg)
• Unit Dimensions: 4-3/4 x 4-3/4 x 2-3/4 in. (121 x 121 x 70 mm)