Temperature and Humidity Test Chamber: A Tool for Accurate Temperature and Humidity Testing

High and low temperature humidity test chamber is a scientific experiment equipment for simulating various environmental conditions. It can simulate temperature and humidity conditions in real environment, helping people to verify products with high performance, safety and durability.

The control system is the heart of the whole equipment, which is in charge of tasks such as refrigeration, heating, humidity control, circulation, control, etc. The refrigeration system of the high and low temperature humidity test chamber is composed of high temperature part and low temperature part. The high temperature part adopts Teikang Germany imported compressor, and the refrigerant will absorb the heat of the low temperature part refrigerant and vaporize, while the low temperature part refrigerant will obtain cold from the air; when the high temperature part and the low temperature part are connected by an evaporator condenser, a complete refrigeration system can be formed.

The heating system of the constant temperature and humidity test chamber adopts independent nickel-chromium alloy electric heating, which has the characteristics of large resistivity, small temperature coefficient of resistance, small deformation and brittleness at high temperature, and its maximum working temperature can reach 1000-1500, and its life is also very long. The humidification adopts external isolation full stainless steel boiler type shallow surface evaporation humidifier, and the dehumidification adopts mechanical refrigeration dehumidification, so as to cool the air below the dew point temperature, so as to reduce the humidity.

Finally, the circulation system of the high and low temperature humidity test chamber is composed of temperature resistant low noise air conditioner type motor and multi blade centrifugal fan. The control system mainly adopts PID control and PID and fuzzy control combination, which masters the important indexes such as heating rate and accuracy, so as to ensure its stability and reliability.

In a word, the high and low temperature humidity test chamber is carefully designed and combined with foreign advanced technology to simulate the real environment and help people test and verify the instrument products, which is a test equipment with high performance, safety and durability.

The daily temperature and humidity test is very important, and the high and low temperature humidity hot and cold interactive test chamber is also popular with users. In order to measure the air humidity accurately, the wet zone ball method becomes the best choice. The principle is to use two temperature gauges with similar characteristics, the center line of the axle of the controller should be parallel, and the distance between them should be at least three times that of the dry ball temperature controller. Take a cup with a lid and fill it with clean water.

The height from the center of the cup to the bottom of the dry ball temperature should be greater than 30 mm, and the height of dry ball temperature when the water penetrates is about between 70 and 80 mm. Then read the value of the dry hygrometer and look up the air humidity value at this temperature according to GB6999-86. The high and low temperature humidity test chamber is equipped with a humidifier, which uses temperature sensor and medical cloth to sense the humidity of indoor space environment, and displays on the control instrument panel, making temperature and humidity measurement more accurate and reliable, providing better guarantee for environmental testing.

Safety Tips for Using High and Low Temperature Test Chamber
High and low temperature test chambers are a kind of instrument with wide application. It is widely used in various materials, equipment, parts or products test or operation in industry. But when using it, some details should be paid attention to, in order to avoid unnecessary losses.
1. Firstly, before using the high and low temperature test chamber, the water level of the water tank should be adjusted first to ensure that the wet ball test cloth can absorb water normally. If it is too high, it will cause water seepage, too low will make it unable to absorb water normally, so it should be kept at the 6-point water level, and checked after each test, and add water to the appropriate water level.
2. Secondly, there should be test line holes in the high and low temperature test chamber, and test lines can be used when installing. At the same time, the switch of indoor lamp can be opened to observe the changes in the chamber.
3. When operating the high and low temperature test chamber at low temperature, the opening of the chamber door should be avoided, because it will lead to icing of evaporator, which will affect the accuracy of the test. If necessary, the opening time should be shortened as much as possible.
4. After low temperature test, the temperature of the chamber body should be set to 60°C and maintained for half an hour in order to prevent icing and maintain the accuracy of other test data.
5. When using high and low temperature test chamber, heat dissipation radiator should be cleaned regularly to ensure normal use.
6. At the same time, when the water barrel enters the water pipe, it is necessary to discharge the residual air, so as not to affect the normal flow of water.

Correct use of high and low temperature test chamber can not only improve the accuracy of the test, but also prevent excessive icing and maintain the first-class quality of the instrument. Therefore, when using high and low temperature test chamber, these points should be noticed to ensure safety.

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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