Mar 18, 2022
Vous pouvez utiliserChambre d'essai à température et humidité constantes de la série HYH to testla minuterie mécanique pour le four.
1. Test de résistance à l'humidité et à la chaleur :
leminuterie mécanique pour four is placed under the environmental conditions of 40±2 degree and relative humidity of 90 percent 95 percent , and it is taken out after 48 hours of continuous storage. At room temperature, the surface is immediately wiped dry, and the measurement is completed within 3 minutes. Its performance should meet:
Insulation resistance should not be less than 10MΩ, withstand ac1500V (effective value), and the test voltage with a frequency of 50Hz lasts for 1 minute, and there should be no insulation breakdown and flashover.
2. Essai à haute température :
Après avoir placé le minuterie mécanique pour four in a high temperature box with a temperature of 120 degree ±5 degree for 1 hour, measure the running time error of the timer in the box.
3. Essai à basse température :
Placer leminuterie mécanique pour four in a low temperature box with a temperature of -15 degree ± 5 degree for 4 hours, then move it to room temperature to recover for not less than 1 hour, and measure its timing error. The timer should not be cracked, deformed, and the error should not exceed the specified value 2 times.
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