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Pressure & Vacuum
Temperature
20 Series Temperature Swichgages®
20BTG Temperature Murphygages®
20SD Direct Mount Temperature Swichgages®
20T-250-6-1/2 (10702043) Temperature Swichgage®
20T-250-8-1/2 (10702044): Temperature Swichgage®
20T-250-10-1/2 (10702045): Temperature Swichgage®
20T-250-12-1/2 (10702046): Temperature Swichgage®
20T-250-16-1/2 (10702048): Temperature Swichgage®
20T-250-20-1/2 (10702050): Temperature Swichgage®
20T-250-25-1/2 (10702051): Temperature Swichgage®
20T-300-4-1/2 (10702067): Temperature Swichgage®
20T-300-6-1/2 (10702068): Temperature Swichgage®
20T-F Temperature Swichgages®
20T-I Temperature Swichgages®
20TH Temperature Swichgages®
A20 Series Temperature Swichgages®
25 Series Temperature Swichgages®
TSB Direct Mount Temperature Switch
SDB Series Direct Mount Temperature Swichgage®
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20T-250-4-1/2 (10702042): Temperature Swichgage®
20T-250-4(240).jpg The 20T-250-4-1/2 is a 2" Temperature Swichgage®. This very popular design features a diaphragm-actuated, temperature-indicating gage, with a built-in electrical switch for tripping alarms and/or shutdown devices. This model has a 4 foot capillary length with a standard 1/2-14 NPT threading, and a temperature range from 130-250°F (54-121°C).

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. 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.

Inside the 20T-250-4-1/2, 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.

Sales Bulletin
Installation Instructions
Price: $55.80

 
 
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