Temperature and humidity test chamber working principle and installation requirements
The constant temperature and humidity test chamber is an indispensable test equipment for quality inspections in various industries. Gaotian Test Equipment Co., Ltd. mainly produces and sells constant temperature and humidity test chambers, and provides technical support to the national market. What is the working principle of the constant temperature and humidity test chamber?
The constant temperature and humidity test chamber consists of thermostat (warming, cooling) and humidification.
Through the rotating fan mounted on the top of the box, the air is discharged into the box to realize gas circulation, and the temperature and humidity inside the box are balanced. The data collected by the built-in temperature and humidity sensor of the box is transmitted to the temperature and humidity controller (micro The information processor) performs an edit process and issues a thermostat/humidity command through the air heating unit, the condenser, and the heating evaporation unit in the water tank.
The constant temperature and humidity box is provided with multiple protection measures; the temperature system is equipped with an over-temperature protection device under the condition that the maximum allowable safety temperature can be set, and the air heating element can be automatically shut down with the rotation fan stopped; the humidification system can follow the humidification tank water level. The power supply is reduced and the power supply is stopped; the refrigeration system also stops working as the temperature of the cabinet increases (more than 40°C) or the humidity increases.
In order to stabilize the performance of the constant temperature and humidity test chamber and prolong its life, to facilitate the heat dissipation and maintenance of the cabinet, attention should be paid to its installation site:
1. The distance from adjacent walls or objects is 300mm;
2. In order to stabilize the function and performance of the test chamber, a place with a constant temperature of 15~35°C and a relative humidity of more than 85% should be selected.
3, the installation site environment temperature should not be drastic changes;
4, should be installed in the level of the surface (the installation of the level gauge on the ground to confirm the level);
5, should be installed in places without direct sunlight;
6, should be installed in a well-ventilated place;
7, should be installed away from combustibles, explosives and high temperature heat source;
8, should be installed in dusty places;
9. Install it as close to the power supply as possible.
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