A multi-factor composite environmental test chamber, humidity measuring device and humidity measuring method

Abstract

A multi-factor composite environmental test chamber, a humidity measuring device and a humidity measuring method, the humidity measuring device includes a humidity measuring system, a transmission device and an automatic control device; when measuring humidity, the humidity measuring device is installed on the composite environmental test chamber. The humidity measurement system with two sealed partitions is controlled by the transmission device to enter and exit the composite environmental test chamber, so that in the non-humidity measurement state, the humidity measurement device is effectively isolated from the polluted air in the composite environmental test chamber, and the humidity measurement device realizes automatic control. Gentle and automatic water replenishment, can accurately measure the humidity in the composite environmental test chamber.

Description

technical field [0001] The invention relates to a humidity measuring device for an environmental test chamber, in particular to a humidity measuring device and a measuring method for a multi-factor composite environmental test chamber. Background technique [0002] Composite environmental test chamber is a test equipment that integrates various environmental test functions (such as salt spray test, damp heat test, light test, drying test). Diversity, better correlation with the actual use environment and other characteristics, so it is getting more and more applications. [0003] In the composite environmental test chamber with the function of regulating humidity, it is necessary to use a humidity sensor to obtain the humidity value. The common measurement methods now are wet and dry bulb hygrometry and electronic hygrometry. Electronic humidity measurement will be interfered by impurities and oil in the air, it needs to be measured in a pure environment, and because of th...

AI Technical Summary

Problems solved by technology

[0004] However, when the wet and dry bulb method is directly applied to the composite environmental test chamber, there will be the following problems: (1) When the composite environmental test chamber is used for corrosion tests, such as salt spray tests, the corrosive atmosphere will pollute the wet ball gauze, making the humidity measurement value higher

(2) During the drying test in the composite environmental test chamber, the wet ball gauze will harden rapidly, making the humidity measurement value low

Images