Thermostatic bimetal functions:
The effects of thermostatic bimetal curvature in response to a change in temperature are utilized in practical applications to achieve different aims. These can essentially be described by the following functions :measuring, limiting,controlling,compensation,pulse-generation,retardation.All these functions overlap to a certain extent so that a particular application may fall under several categories .
Measuring
Temperatures and certain electrical variables and their rate of change can be regulated by calibrated systems.
Examples:
Spiral thermometers, Ammeters
Limiting
Trip functions are required at certain upper or lower limits in order to initiate or to cut out an operation.
Examples :
Automatic circuit breakers
Motor protection switches
Controlling
Within a certain range,functions are cut in or out ,or circuits made or broken,in order to maintain a certain average setting.
Examples:
Electric iron controls, Bypass valves
Compensation
A deviation from the initial condition is compensated for by the thermostatic bimetal action.
Examples :
Color television tube compensation,Measuring instruments with compensation for fluctuations in ambient temperature.
Pulse-generation
An operation is triggered at clocked intervals.
Examples:
Flasher relays, Hotplate heating coils
Retardation
An incoming signal (e.g. current)will only trigger an operation after a defined delay period.
Example:
Thermal relay
Material information(TB208/110):
Working information
Package information
More application
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