![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
The relative humidity of the constant temperature and humidity test chamber is an important parameter in the environmental test equipment. Reasonable and accurate measurement of relative humidity is of great significance for ensuring environmental conditions:
1. The national standard GB2423.1 specifies the temperature tolerance range of ±3 °C in the low temperature test method of the constant temperature and humidity test chamber. Here, ±3 °C does not refer to that point or at that time, for the entire working space. The requirements of each point. Another problem that should also be pointed out is that the temperature tolerance of ±2 °C is the concept of allowable deviation.
2. When the temperature gradient of the military standard GJB150 is at most 2.2 °C, the uniformity of the temperature field is the relationship between the temperature of each point in the temperature zone at a certain instant. The temperature tolerance of ±2 °C should never be regarded as the setting range of the nominal value. Example 50±2°C: At this time, 50°C is the nominal value, and ±2°C is the tolerance. When setting the environmental condition parameter value, the temperature setting value can only be 50°C, but not 52°C, or 48°C. Due to the error in the control system drift adjustment and the non-uniformity of the test chamber temperature field, the measured temperature of the test temperature may not be 50 ° C, the allowable deviation but the range is not more than 52 ° C or not lower than 48 ° C
Yashilin brand constant temperature and humidity test chamber meets GB/T 2423.1-2008 test A "low temperature test method"; GB/T 2423.2-2008 test B "high temperature test method"; GB/T 2423.3-2006 test C "constant damp heat method" GB/T 10586-2006 "Dry heat test chamber technical conditions" and other national standards for design and manufacture, can carry out a variety of high and low temperature humid heat environment test.
Brand constant temperature and humidity test chamber, all in Beijing Yashilin test equipment
We are a professional manufacturer and distributor of science and educational supplies for primary schools, middle schools, colleges, hospitals or medical institutes. The slide was cut subtly without any mark, break or constrict. There is no destruction of tissues or cells.The spread of tissues has clear bounds; they remain the original shape. Also the coloration for the tissues is obvious and clear.
Biology Slide,Biology Microscope Slides,Prepared Slides For Biology,Microbiology Prepared Slides
Xinxiang Vic Science&Education Co.,Ltd. , https://www.hnbiologyspecimen.com