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Home > Industry Information > Irrigation & Humidity measurements of constant temperature and humidity incubator

Humidity measurements of constant temperature and humidity incubator

The time of issue:2013-04-28 10:59:40 view number:

The relative humidity in the environmental test is a very important parameter, reasonably accurate measurement of relative humidity, has important significance to ensure environmental conditions.

The so-called relative humidity, air water vapor partial pressure and the same temperature under saturated water vapor partial pressure ratio. The relative humidity in the chamber such as constant temperature and humidity incubator usually not by the measurement of water vapor in the air pressure and saturated vapor pressure obtained by measuring the dry bulb temperature and be translated. Wet and dry bulb measurement of relative humidity, air condition, if the temperature changes phase by wet and dry bulb measurement of relative humidity is not accurate, only as a reference.

In the air steady state case, the relative humidity is limited only by the Show A value formula A values vary depending on the size of the flow through the air flow rate of the wet bulb, so the flow rate of air flowing through the wet bulb is the important factors that affect the relative humidity measurements, experiments show that when the air velocity is greater than 2.5m / s, relative to the temperature has not obvious, but temperature and humidity chamber, the chamber is under confined conditions, the test requirements in the work space is arranged a plurality of relative humidity measurement point. <1 m³ within, there will be a plurality of such ships in the workspace can produce local gas velocity is greater than 2.5m / s wind source, which would destroy the original working state of the chamber, obviously inappropriate.