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| 20SD-250-1/4 (10703391): Direct Mount Temperature Swichgage® |
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The 20SD-250-1/4 is a 2" Direct Mount Temperature Swichgage®. This model has no capillary tube. It is a diaphragm-actuated, temperature-indicating gage with a 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 polished, stainless steel bezel help protect this rugged, built-to-last instrument.
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. Contacts are isolated through ground. This gage has a self-cleaning motion to enhance electrical continuity.
Sales Bulletin
Installation Instructions
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