The constant temperature and humidity test chamber, as a key testing equipment for simulating various temperature and humidity environmental conditions, is widely used in the adaptability assessment of electrical, electronic products, materials and other fields. Scientific and reasonable operation and maintenance are crucial to ensure the long-term stable operation of equipment and the accuracy of test results.

1、 Operating standards

Preparation before startup

Before operating the equipment, it is necessary to check the environmental adaptability: confirm that the test chamber is placed in a well ventilated and warm environment10-30℃Relative humidity≤85%RHAvoid direct sunlight or proximity to heat sources in the environment. At the same time, check whether the power supply voltage meets the equipment requirements, whether the power cord and plug are damaged, and whether the interior of the equipment is clean and free of debris. The samples should be evenly distributed to avoid obstructing the air outlet and affecting the uniformity of temperature and humidity, and the total weight and volume should not exceed the allowable range of the equipment.

Parameter setting and operation

Set target temperature, humidity, and operating time through the control panel or touch screen, with parameter ranges within the device's limits. After starting the device, monitor temperature and humidity changes in real time, and it is recommended to use a data logger for each5-15Record data every minute. Avoid frequent opening and closing of the box door during the experiment to prevent temperature and humidity fluctuations from affecting the results.

exception handling

If an over temperature or over humidity alarm occurs, immediately pause the test and investigate the cause of the malfunction before continuing. After the high-temperature test is completed, wait for the temperature inside the box to naturally drop to near room temperature before taking out the sample to prevent condensation from damaging the equipment or sample.

2、 Maintenance and upkeep

Daily cleaning

Clean the residue inside the box after each experiment, use neutral cleaning agent to wipe the inner container, and focus on cleaning the sample holder, air guide plate, and other parts. Wipe the equipment casing with a dry cloth every week, clean the distribution room and air inlet filter screen every month, clean the humidification water tank every quarter and replace the water source to avoid scale blockage.

regular maintenance

Check the condenser cooling mesh every month and use a vacuum cleaner or compressed air to remove dust; Calibrate temperature and humidity sensors quarterly, compare data with standard temperature and humidity meters, and find deviations exceeding±0.5℃/±2%RHProfessional adjustments are needed when necessary; Check the refrigerant pressure and electrical cabinet wiring terminals every six months, and promptly address any looseness or aging found.

Replacement of vulnerable parts

Regularly replace aging components such as humidification pump filters, air filters, door seals, etc. based on usage frequency. The wet bulb test cloth should be replaced every three months. If the surface becomes hard or contaminated, it should be replaced immediately to ensure the accuracy of humidity detection.

Long term suspension management

Before shutting down the equipment, it is necessary to clean the interior, drain the water tank, and keep the door slightly open for ventilation. Power on operation every month1-2Hour, to prevent components from aging due to long-term idle.