Description
Thermometers mercury electrocontact TPK execution P (straight lines), execution At (angular)
GOST 9871-75
Are used for maintenance of the constant (set) temperature in industrial, laboratory, power and other installations.
The thermometer is manufactured with mobile working contact.
Has the enclosed plate from glass of dairy color on which two scales are put. The top scale serves for setup of the thermometer for the set temperature. Control is made by rotation of magnetic adaptation, thereby establishing the end of a tungsten thread on a mark of the set temperature.
The lower scale serves for correction of control of the set temperature, according to indications of the control thermometer.
As thermometric liquid mercury is used.
Principle of work:
The thermometer is connected in a chain of direct and alternating current with a frequency up to 50 Hz. The TPK thermometer works in the beziskrovy mode; has to have the intensifying device.
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Thermometers mercury electrocontact TPK
