Constant temperature and humidity test box FAQ

Posted On：2016-08-04

Initial use test box with constant temperature and humidity of the user may encounter this kind of situation, in the test process of humidity suddenly showed 100%, but do not know is what reason is caused? Today, the author will address this issue in detail for you to answer.
The first step: check whether the wet bulb is hanging on the humidity sensor. The sensor near the sink for humidity sensor, gauze should be hung in the humidity sensor, temperature sensor and wrap. A small number of customers often hang the wrong position, hanging on the temperature sensor above, causing the machine failure, therefore, please carefully identify, above the root for the temperature probe, the following close to the sink for the humidity probe.
The second step: if hang correct humidity still showed 100%, please check the wet bulb gauze whether yellowing phenomenon, or the use of time is too long, gauze accumulated too many minerals, causes the wet bulb gauze absorbent performance degradation, ceiling Sheung Shui, thus allowing for detection of humidity is not accurate, resulting in false high humidity; if yes, please replace the wet bulb gauze, such as not, need to check the wet ball water tank of anhydrous or low water level, gauze to less absorption of water, focus on examination of the following several positions:
A, observe whether the water tank side of the water tank, if not, it is possible to damage the floating ball
B, electromagnetic pump damage, with the voltage meter measuring the resistance, if open damage
C, gap replenishment timer damage, can not be normal replenishment
Step three: a controller set of problems, few customers have a test box with constant temperature and humidity of the improper use, often at low temperature also set the humidity and high temperature of 120 degrees Celsius degrees also set the humidity, this also makes the controller of misalignment and instability. Low temperature machine can not control the humidity, easy to freeze; high temperature evaporation is too fast, the machine is also very difficult to set up the humidity. Therefore, please read the instructions of the majority of customers, standardize the operation of the machine, to extend the service life of equipment.