According to our many years of accumulated after-sales experience, it is always common for the humidity of the high and low temperature alternating heat and humidity test chamber to be insufficient, or the humidity display of 100% is generally caused by the incorrect placement of the user's wet ball gauze. Or the gauze does not meet the specifications. Xiaobian hereby suggests that the wet ball gauze used in the test box is not a substitute for any gauze. It also has certain requirements.
For the wet ball gauze of the high and low temperature alternating heat and humidity test chamber, we can use the advanced wet paper towel instead. The random gauze can not be used instead, because the relative humidity reading is based on the difference between temperature and humidity, strictly speaking The local atmospheric pressure and wind speed at that time were related. The wet bulb temperature indication is related to the amount of water inhaled by the gauze and the surface evaporation. These are directly related to the quality of gauze, so it is stipulated in the weather that the wet gauze must be a special "wet ball gauze" woven into linen. Otherwise it is difficult to ensure the correctness of the wet bulb thermometer, that is, the correct humidity. In addition, the placement of the wet ball gauze is also clearly defined. The length of the gauze: 100mm, the sensor probe is tightly wound, the probe is 25-30mm away from the humidity cup, and the gauze is immersed in the water cup, so as to ensure the correctness of the equipment control and the accuracy of the humidity.
Although it is a small gauze, it can affect the standard of the whole test. The selection of the wet ball gauze of the high and low temperature alternating heat and humidity test chamber I have explained above is hopeful.

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