There are several main methods for maintenance and maintenance of temperature-controlled humidity test chambers.

There are several main methods for maintenance and maintenance of temperature-controlled humidity test chambers.

The temperature control humidity test chamber is a test box that combines high temperature, low temperature and damp heat. Its repair difficulty is larger than other environmental test equipment and representative. Let's talk about the structure of the temperature control humidity test chamber and some common faults and troubleshooting methods.

Test box physical map

â—† In the high temperature test, if the temperature change does not reach the test temperature value, the electrical system can be inspected and the faults can be eliminated one by one. If the temperature rises very slowly, it is necessary to check the air circulation system to see if the regulating baffle of the wind cycle is normal. On the contrary, check whether the motor of the wind cycle is running normally. If the temperature is too high, you need to set the PID setting parameters. If the temperature rises directly and the temperature is over-protected, then the controller fails and the control instrument must be replaced.

â—† If the low temperature does not reach the test index, then it is necessary to observe the temperature change. It is the temperature drop is very slow, or the temperature has a tendency to rise after the temperature reaches a certain value. The former should check whether the studio is dried before the low temperature test, keep the studio dry and then put the test sample into the work room and then do the test. The test sample in the work room is placed too much, so that the wind in the work chamber Can not fully circulate, after eliminating the above reasons, it is necessary to consider whether it is a fault in the refrigeration system, so it is necessary to ask the professional staff of the factory for maintenance. The latter phenomenon is caused by the poor use of the equipment. The ambient temperature at which the equipment is placed and the location where it is placed ( the distance between the back of the cabinet and the wall ) must meet the requirements (as specified in the operating instructions for the equipment ) .

â—†In the temperature control humidity test chamber , the actual humidity will reach or the actual humidity will be very different from the target humidity. The value is much lower. The former phenomenon may be caused by the dry gauze on the wet bulb sensor. Whether there is water shortage in the sink of the wet bulb sensor, the water level in the water tank is automatically controlled by a water level controller. Check whether the water supply system of the water level controller is normal and the water level controller works normally. Another possibility is that the wet gauze is hardened due to the long use time or the purity of the water supply, so that the gauze becomes hard and the gauze can not absorb moisture and is dry. The above phenomenon can be eliminated by replacing or cleaning the gauze. The latter phenomenon is mainly because the humidification system does not work. Check the water supply system of the humidification system, whether there is a certain amount of water in the water supply system, whether the water level control of the humidification boiler water level is normal, and whether the water level in the humidification boiler is normal. If all of the above are normal, then you need to ask Dongguan Haotian test equipment professional maintenance personnel to check the electrical control system and carry out maintenance.

When the equipment suddenly fails during the test operation, the corresponding fault display prompt appears on the control meter and there is an audible alarm prompt. The operator can quickly check which type of fault is involved in the troubleshooting chapter of the operation of the equipment, and then ask the professional to quickly eliminate the fault to ensure the normal operation of the test. Other environmental testing equipment will have other phenomena in use, and it will be specific phenomena, specific analysis and elimination. The temperature and humidity test chamber should also be regularly maintained. The condenser of the refrigeration system needs to be cleaned regularly. The moving parts should be lubricated according to the instructions, and the electrical control system should be regularly maintained and inspected. These tasks are essential.

Construction of temperature control humidity test chamber

The temperature control humidity test chamber is composed of a box body, a wind circulation system, a refrigeration system, a heating system and a humidity control system. The air circulation system generally adopts a structure that can adjust the direction of air supply ; the humidification system adopts two types of boiler humidification and surface evaporation ; the cooling and dehumidification system adopts an air conditioning working condition refrigeration structure ; the heating system adopts electric heating fin heating and electric furnace direct heating. Structure ; temperature and humidity test method adopts dry and wet ball test method, and also uses humidity sensor direct measurement method ; control and display operation interface adopts temperature and humidity separation independent and temperature and humidity combination controller.

Its main products are: salt spray test chamber, constant temperature and humidity chamber, high and low temperature chamber, high and low temperature damp heat test chamber, high and low temperature test chamber price, salt spray test chamber, high and low temperature test chamber, high temperature chamber, oven, high and low temperature damp heat test chamber , low temperature test chamber. Constant temperature and humidity test chamber, temperature shock test chamber, ultraviolet weather test chamber, xenon lamp weather test chamber, swing tube rain test device, high and low temperature alternating heat and humidity test chamber, instrument , rapid temperature change test chamber, etc.

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