Why should pure water be used for high and low temperature humidity chamber

If the high and low temperature humidity chamber uses ordinary water humidification particles, it will be relatively large. The humidity sensors of the equipment are more common, such as capacitance sensors and Honeywell sensors. If the test equipment has requirements for humidity for a long time, it will affect the service life of the humidity sensors. Because some humidity sensors’ printed circuit boards do not use anti-oxygen materials or waterproof materials, etc, Once water with poor water quality is used, it may cause short circuit of humidity sensor.

In addition, daily tap water contains some calcium ions, magnesium ions, potassium ions, as well as some sulfate and other trace minerals, which may also have some impact on the test materials. If it is tap water for a long time, it may also produce dirt and affect the performance of the test equipment. Therefore, it is generally recommended that enterprises use purified water, in fact, can also use softened filtered water, etc.

What causes water mist in high and low temperature humidity chamber?
The reason why there is water mist in the high and low temperature humidity chamber is that the equipment needs to conduct humidity test, so the equipment is equipped with a humidification system. If the humidity is required to be within 50%, then the humidity is not large enough, so usually no water mist will be generated. But if the humidity is greater than 50%, especially in the high humidity test with the humidity between 50% and 80%, the water mist will be generated normally at this time, which is like the humidifier used at home, You can ignore this situation.

As for water mist, will it affect the test effect of the equipment? It depends on whether the equipment meets the test requirements. Now the equipment is usually made of stainless steel, such as 304 stainless steel mirror panel. Such equipment has good heat resistance and corrosion resistance, so the impact is relatively small when the equipment is tested.

When is the humidity condition of the high and low temperature humidity chamber opened?
High and low temperature humidity chamber can be used for high temperature, low temperature, alternating or damp heat test. In order to meet the test conditions, humidification and dehumidification are also inevitable.

When can the high and low temperature humidity chamber be opened with good humidity performance?
Temperature test can be carried out. In addition to temperature, the equipment still has two words of humidity control. Then, it is undeniable that the equipment can be opened.

1. The ambient humidity function cannot be turned on at the beginning. It should be turned on after the temperature condition is stable, and it can only be turned on after 1 hour, otherwise it will cause severe temperature fluctuations.

2. The air humidifier can be adjusted to a relatively high temperature for the first time. When the ambient humidity is too high, the air humidifier can be adjusted to a lower temperature, or the way of turning the wheel again is selected. The ambient humidity of the ambient humidity should be adjusted to about 5 degrees, and then set at the set ambient humidity after waiting for the temperature.

3. There is a convenient and quick way to reduce the ambient humidity from high and low temperature to low temperature and dry, that is, close the ambient humidity, open the tailgate, and save energy when the ambient humidity is reduced to normal.

The temperature of the high and low temperature humidity chamber is set below 10 ℃, which will not have the effect of ambient humidity. Because the temperature is too low, the evaporator of the air conditioner will freeze and fail.

Temperature Humidity Chamber | Thermal Chamber | Climate Chamber is according to IEC60068-2-1 (GB/T2423.1) and IEC60068-2-2 (GB/T2423.2), IEC60068-2-78, IEC60598-1, GB/T2423.17, GB/T5170.2, GB/T5170.5. The climate chamber is used to test the CFL/LED which meets IES LM-80-08, electricity products, automative cars, home appications and mobiles.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

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