Knowledge of Temperature Humidity Testing Chamber
As a kind of temperature control test box, the high-low temperature wet heat alternating test box is mainly used for the high and low temperature reliability test of industrial products in high and low temperature test environments and high and low temperature alternating humidity heat environments. For automotive motorcycles, electronic electricians, institutions of higher learning, research institutes, aerospace, ship weapons, and other related parts and materials in the high and low temperature (alternating) cyclical changes in the test of its performance indicators.
The high-low temperature heat and humidity alternating 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 the air supply; the humidification system uses two kinds 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 direct electric wire heating structure; the temperature and humidity test method using wet and dry ball test method, but also a direct measurement of humidity sensors; the control and display interface using separate temperature and humidity and temperature and humidity combination controller and other methods.
The control part of the high-low temperature humidity heat alternating test box is mainly through a programmable temperature and humidity meter. Ordinary programmable instruments have fully automatic control. You can set the parameters to be set and the number of tests in advance, and then work according to the set program. Programmable temperature and humidity meters are equipped with common programmable instruments and added a water circulation system control function. Because of the configuration of the cooling and dehumidification system, the configuration requirements of the electrical system and the temperature control system are basically the same.
High and low temperature heat and humidity alternating test chamber installation site
In order to facilitate the heat dissipation and maintenance of the cabinet, the place where this equipment is installed must meet the following conditions:
1. The distance from the adjacent wall or utensils is 50 cm.
2. The environmental temperature of the installation site of the high-low temperature heat and humidity alternating test box should not be changed drastically.
3. Should be installed on the level of the ground;
4. Should be installed in places without direct sunlight.
5. Should be installed in a well-ventilated place.
6. Should be installed in dusty places.
7. Install it as close to the power supply as possible.
8. High- and low-temperature heat and humidity alternating test chambers should be installed away from combustibles, explosives, and high-temperature heat sources.
9. High-Low Temperature Humidity Alternation Test Chamber In order to stably exert the function and performance of the test chamber, a place with a constant temperature of 15 to 25 °C and a relative humidity of less than 85% should be selected.