Multimeter judgment of good or bad temperature controller
There are many types of temperature controllers, and I don't know which type of temperature controller you are referring to. Firstly, to determine which type of temperature controller is faulty, the measurement method is basically the same, and the quality is judged by a multimeter. For example, for a rice cooker temperature controller, after being powered on, its two contact points are connected, and only when the temperature reaches the set value, the contact points are disconnected to protect the furnace plate from heating; If it is a refrigerator or freezer thermostat, it can be switched on by adjusting it to above gear 1 after being powered on. The refrigerator or freezer thermostat is a mechanical thermostat, which is equipped with gear 1-7. Gear 0 is the disconnected state, gear 1-4 is the refrigeration gear, and gear 5-7 is the strong cold gear. If it is turned on to the strong cold state, the freezer will be in the non-stop state, and it will consume electricity if it runs all the time. Generally, the higher the number is, the lower the temperature of the freezer will be, while the refrigerator thermostat is the opposite, In summer, set the temperature to 1-4 and in winter, set it to 5-7. Due to the low temperature in winter, it is necessary to set the temperature to a high point, causing the refrigerator to shut down for a longer time. In summer, due to the high temperature, in order to prevent the food inside the box from spoiling, the temperature controller should be set to a low position, allowing the refrigerator compressor to work more and rest less, in order to achieve the best cooling effect. Generally, the temperature of the refrigeration room is between 0-10, and when the temperature of the refrigeration room reaches below -18 degrees Celsius, it will shut down, which is considered good; For example, the temperature controller of a water dispenser, under normal circumstances, is connected at both ends. It will only disconnect when the temperature reaches 85-95 degrees Celsius, cut off the power, and protect the heater from heating; The temperature controller of the foot wash basin is the same as the temperature controller of the water dispenser. For example, the temperature controller of an electric heater is also disconnected when the temperature reaches the set value, but it is better to use 16A250 volts or above; For example, the temperature controller of a gas water heater also uses an 85 degree 10A250V, just like the temperature controller of a water dispenser.
