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Thermostat
Thermostat
The Thermostats are strut and tube type thermostats comprised of two basic parts (1) the outer shell made of high expanding metal and (2) the strut assembly made of low expanding metal. A pair of electrical contacts are mounted on the strut assembly and installed in the shell under tension or compression. Each end of the strut assembly is mechanically connected to the ends of the shell. When the high expanding shell expands or contracts with the changing temperature a net change in force are produced on the low-expansion strut. The temperature at which the contacts ?make? or ?break? can be regulated. The accuracy is considerably better than that is obtainable from other types of Thermostat, such as the snap acting type. Low load switching differentials of less than 0.1 degree C are achieved. The adaptation of the differential expansion principle gives several important control advantages.
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Used in strip packing machines, hydraulic laminating presses, label adhesive applicators, deep fat cookers, vending machines, milk pasteurisers etc.
Withstand large temperature changes without damage; resistance to vibration; short reaction times; simple and full adjustability over range; high sensitivity; inherent temperature anticipation; wide operating range; direct response to radiant heat; high switching capacity; accessibility of adjusting sleeve and lead wires.