Bimetal hot cut off switch temperature detection equipment
Bimetal hot cut off switch temperature detection equipment: Oven, Thermocouple thermometer, Wrinkles adhesive tape, Display on / off LED.
1. The temperature control switch placed in the oven for testing, The air flow rate of the test chamber is not less than 200 m / min. The temperature inside the temperature field is kept even(The best way to install the bottom of the oven heating resistor, Heating resistor upper level horizontal assembly fan.
When the oven starts heating, While opening blower system to ensure that the internal temperature of the temperature field uniformity);
2. Temperature probe (thermocouple or mercury thermometer bubble) as close as possible to the temperature control switch. And parallel to the fan (The temperature control switch fixed on the mercury table on the bubble, Found table holding the mercury switch actual temperature consistent with the temperature control value).
3, the temperature control switch on both ends of the pin into the LED tooling, With LED lights to indicate the state ON / off state, Through the temperature control switch current does not exceed 0. 01A;
4. Increase the air temperature in the test, When the air temperature is below the rated breaking temperature of 10K, Temperature change rate of not more than 0. 5K / min, To the temperature control switch action. Reduce air temperature, When the temperature is higher than the reset temperature upper limit temperature 10K, Temperature change rate of not more than 0. 5K / min, Until the temperature control switch is reset and the circuit is switched on again(Because the protector and mercury table temperature rate is not the same, Excessive temperature or cooling rate will lead to inaccurate test data);
5. Products in the test, Measuring the temperature probe without any object close to him, Because the endothermic of other objects, easily lead to protector temperature hysteresis.
1. The temperature control switch placed in the oven for testing, The air flow rate of the test chamber is not less than 200 m / min. The temperature inside the temperature field is kept even(The best way to install the bottom of the oven heating resistor, Heating resistor upper level horizontal assembly fan.
When the oven starts heating, While opening blower system to ensure that the internal temperature of the temperature field uniformity);
2. Temperature probe (thermocouple or mercury thermometer bubble) as close as possible to the temperature control switch. And parallel to the fan (The temperature control switch fixed on the mercury table on the bubble, Found table holding the mercury switch actual temperature consistent with the temperature control value).
3, the temperature control switch on both ends of the pin into the LED tooling, With LED lights to indicate the state ON / off state, Through the temperature control switch current does not exceed 0. 01A;
4. Increase the air temperature in the test, When the air temperature is below the rated breaking temperature of 10K, Temperature change rate of not more than 0. 5K / min, To the temperature control switch action. Reduce air temperature, When the temperature is higher than the reset temperature upper limit temperature 10K, Temperature change rate of not more than 0. 5K / min, Until the temperature control switch is reset and the circuit is switched on again(Because the protector and mercury table temperature rate is not the same, Excessive temperature or cooling rate will lead to inaccurate test data);
5. Products in the test, Measuring the temperature probe without any object close to him, Because the endothermic of other objects, easily lead to protector temperature hysteresis.
