Water requirements for high and low temperature wet heat alternating test chamber

The high and low temperature wet heat alternating test chamber is suitable for aerospace products, information electronic instrumentation, materials, electrical, electronic products, various electronic components in high and low temperature or hot and humid environment, to test its performance indicators.

The high-low temperature wet heat alternating test chamber has a relatively large amount of water and humidification particles. If the humidity is required for a long time, the service life of the humidity sensor will be affected.

In the regulations on water use requirements for high and low temperature wet heat alternating test chambers, it is stipulated that pure water must be used for two reasons:

First, the high-low temperature wet heat alternating test chamber is relatively large because of the humidification of water particles. If the humidity is required for a long time, it will affect the service life of the humidity sensor. (Humidity sensor: generally divided into capacitive sensor, Honeywell Sensors (this is a little better), but some of their PCB boards are not made of water-repellent materials or anti-oxidation materials. If the water quality is poor, the humidity sensor will be short-circuited or the water quality will be poor, and there will be impurities. If it takes a long time, it will block the humidification. The pipe and the heat pipe of the humidification barrel are short-circuited.

Second, the high and low temperature wet heat alternating test chamber humidification tank has a water level switch. The middle of the float of the water level switch is a magnetic rod, and the float is not made of imitation oxidized material. Therefore, for a long time, or often without changing the water, the water level switch will be short-circuited, which will result in the inability to humidify or humidify. This is not conducive to the completion of the experimental steps by our customers, causing the interruption of the experiment will be an incalculable loss.

According to the above reasons, Dongsheng Instruments reminds users to remember that high-low temperature damp heat alternating test chamber must use pure water during the experiment to avoid loss; especially for customers who often use humidity or do high temperature and high humidity, please in half a month or one After the series of tests is completed, clean the waterway and replace the purified water in time to extend the life of the machine.