Thermostatic humidity chamber wet ball gauze precautions

Constant temperature and humidity wet ball gauze is related to the accuracy of humidity, so what are the precautions when installing wet ball gauze and checking wet ball gauze before testing? 1.
When the wet ball gauze is tested, bacteria will multiply and produce bacteria, and when there are too many bacteria, the water absorption of the hydrolyzed block gauze will be poor, so wash your hands before touching the wet ball gauze to prevent the bacteria from being brought to the
wet ball gauze.

2, * period only do temperature, especially when doing temperature test above 50 ° C, you need to remove the wet ball gauze, if the gauze is baked dry will make its water absorption performance worse and affect the humidity detection accuracy
of the next damp heat test.

When the wet ball gauze is put in, please pay attention to: make sure that the gauze and the sensor tail are aligned when the gauze is inserted, if the gauze is not installed, the humidity will be difficult to control and stabilize
.

1.
Roll the bottom of the wet ball gauze into a circular arc
.

2.
Extend the wet ball gauze into the sink in the center of the wet ball sink and hang the wet ball gauze completely immersed in the humidity sensor, hang or put the humidity sensor; If you do the temperature test during the * period, please remove the wet bulb gauze; If the wet ball gauze becomes hard and the water absorption is not good, it needs to be replaced in time, otherwise it may lead to inaccurate humidity; 3, wet ball gauze and wet ball temperature sensor tail alignment constant temperature test box wet ball gauze placement also has clear provisions: gauze length 100mm, tightly wrapped sensor probe, probe from the humidity cup 25-30mm, gauze immersed in the cup
.

In this way, the correctness
of the humidity can be guaranteed.

The incorrect hanging of the humidity box wet ball gauze will lead to inaccurate humidity, and the wet ball gauze should be hung like this: 1, the wet ball gauze is completely immersed and hung on the humidity sensor, and the humidity sensor is suspended or inserted; 2.
The upper part of the wet ball gauze is on the humidity sensing, and the lower part is put into the sink; There are two sensors in the constant temperature and humidity test chamber, a temperature sensor and a
humidity sensor, and the wet ball gauze needs to be hung below.

Before starting the test, the hanging of the wet bulb gauze should be checked to avoid the situation that
the humidity is difficult to stabilize.