Last week,we have shared how to choose the Size and Test Method of Constant Temperature and Humidity Chamber,Today we would like to discuss next part:
How to choose the Temperature Range of it.
Part Ⅲ: How to choose the Temperature Range of the constant temperature and humidity chamber?
Nowadays,The Temp range of most chambers should be on about -73～+177℃ or -70～+180℃ for overseas manufacture.In China,most of it could be on about -70～+120℃,-60～+120℃ and -40～+120℃,there are also some manufacturers of the it can do 150℃.
These temperature ranges can usually meet the needs of temperature test for most military and civil products in China. Unless there are special needs, such as products installed close to heat sources such as engines, the upper limit of temperature should not be blindly raised. Because the higher the upper limit temperature is, the greater the temperature difference inside and outside the chamber is, and the worse the uniformity of the flow field inside the chamber is.
The smaller the volume of the available studio is. On the other hand, the higher the upper temperature is, the higher the heat resistance of insulation materials (such as glass wool) in the inter layer of chamber wall is required. The higher the requirement of chamber sealing, the higher the production cost of the chamber; while the low temperature involves the part of product cost, the lower the low temperature, the greater the power and refrigeration capacity of the refrigeration system, and the corresponding equipment cost also increases, and the cost of the low temperature system accounts for about 1 / 3 of the overall cost of the equipment.
For example, the actual test temperature is – 20 ℃, and the lowest temperature when purchasing equipment is – 30 ℃, which is not reasonable It should be too low, Otherwise the energy consumption will be greater.
Most of our chamber could be reach 65℃ like DRK-LHS-SC Series,In order to ensure the safety of the laboratory, we specially made an independent temperature control alarm system for your choice also.
Post time: Mar-05-2021
