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Murphy 32-160F Temperature Swichgage 2" with 10 Ft Capillary 20TABS-B1-160-10-1/2

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Murphy 32-160F Mechanical Temperature Swichgage 2 in. w/ 10 Ft Capillary and Snap-Switch for Pre-Alarm - 20TABS-B1-160-10-1/2

Product Condition: NEW
Murphy 32-160F Temperature Swichgage 1/2-14 NPT with 10 Ft Capillary, Black Bezel and Plated Steel Case 20TABS-B1-160-10-1/2
Estimated ship date: for orders by 3pm PT/6pm ET today Available for back order.

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The Murphy 32-160F Mechanical Temperature Swichgage 2" with 10 Ft Capillary and Snap-Switch for Pre-Alarm 20TABS-B1-160-10-1/2 is a diaphragm-actuated, temperature-indicating gage with built-in electrical switch 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 black 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 20TABS-B1-160-10-1/2 features a standard limit contact for high temperature equipment shutdown. It also has an internal SPDT snap-switch to signal an alarm before shutting down. When the low side of the snap-switch trips (preset point), on rising temperature, the switch completes a circuit to activate an alarm. If the temperature continues to increase, the face-adjustable pointer contact will make and the shutdown circuit will be completed (see the typical diagram image #4). The front contact shutdown limit setting (which is adjustable) and the snap-switch are preset at the factory. Refer to Temperature Ranges and Factory Settings. For alternative alarm before shutdown, see Magnetic Switch model 760A or 761APH.

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. This gage has a self-cleaning motion to enhance electrical continuity. Applications: Industrial engines and equipment in Oil Field, Marine, Irrigation Construction and Trucking industries. Monitoring Engine Coolant, Crankcase Oil and Transmission Oil.



  • 2 inch/51 mm Dial
  • Steel Case Coated to Resist Corrosion
  • Polycarbonate, High-Impact Lens
  • B1 = Black Bezel
  • Combination Indicating Gage and Limit Switch
  • Switch Can Activate Alarms and/or Shut Down Equipment
  • Contact Grounds Through Case
  • Internal SPDT Snap-Switch for Pre-Alarm


  • Part No.: 20TABS-B1-160-10-1/2
  • Range: 32-160°F (0-71°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: Black
  • Pointer: Tempered nickel silver
  • Lens: Polycarbonate, high-impact
  • Sensing Element: Beryllium copper diaphragm
  • Capillary: PVC armored copper; 10 ft
  • Adapter Nut: 1/2-14 NPT
  • Sensing Bulb: Copper
  • Gage Accuracy: 32 to 160°F (0 to 71°C) Temperature Range; ± 20°F (± 10°C) Lower 1/3 of Scale; ± 8°F (± 4.4°C) Middle 1/3 of Scale; ± 7°F (± 4°C) Upper 1/3 of Scale
  • Maximum Temperature: 215°F (102°C)
  • Standard Setting: 150°F (66°C)
  • Adjustable Limit Contact: SPST contact; pilot duty only, 2 A @ 30 VAC/ VDC; Ground path through encasement. Normally Closed (NC) when the high 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: 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)

Additional Information

Product Condition NEW
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