The constant temperature and humidity test chamber is the product placed under the specified temperature and humidity, depending on the product's high temperature resistance, low temperature resistance, and humidity resistance, then the constant temperature and humidity machine also has the ability to heat, cool, humidify, and dehumidify.
The temperature and humidity required for the test can be controlled by the control instrument to control the action of each component, so as to meet the test requirements.
The heating device is the key link to control whether the constant temperature and humidity test box is heated; when the controller receives the heating command, it will output a voltage to the relay, and about 3-12 volts DC is added to the solid state relay; its AC terminal is equivalent to the wire connection The contactor also pulls in at the same time, and there is voltage at both ends of the heater to make it heat. The heat is brought into the box by the circulation fan, so that the constant temperature and humidity machine heats up, so that the temperature quickly reaches the value you set.
The controller of the constant temperature and humidity test chamber is adjusted by adding on and off of the solid state relay; we look at the heating output of the screen on the control instrument of the constant temperature and humidity test chamber to adjust the calorific value; this is temperature control above 89 degrees, when the test We will explain in detail in the next section when the temperature requirement is below 89 degrees.
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