The high and low temperature box is used to test various characteristics and specifications of items or materials under the condition of high and low temperature conversion. The low-pressure steam enters the compressor from the evaporator, and the steam is sent to the condenser after the internal pressure of the compressor rises, and then enters the condenser to conduct heat exchangers with cooling water or air, so that the superheated steam becomes saturated steam, and the steam is changed from saturated steam to saturated steam. to become a saturated liquid.

The temperature uniformity of the high and low temperature box shall be less than ±2,0 degrees Celsius when the test is carried out. , 0 degrees Celsius, if you find that the fluctuation is relatively large in the process of using the device, you can use the following methods to carry out search processing.

Check the high and low temperature box's continuous electrical appliances, whether this component will work regularly and affect the fluctuation of temperature, so it depends on whether this component will be faulty or damaged, and if it needs to be repaired or replaced.

Check the equipment controller, check if there is a problem with the controller setting, or if there is a problem with the data in the controller, and if there is a fault in the controller, can it be used routinely, if it is the controller setting and Data problems need to be calibrated in time, and component failures need to be repaired and replaced by professional personnel.

The compressor of the equipment will also affect the fluctuation of the temperature, so it is necessary to see whether the compressor of the equipment has regular work, and if there is a fault, it must be repaired.