PHT stands for particle, humidity and temperature. It is a monitoring equipment about these factors. As you may know, in the Cleaning Room that produces BLU (Back Light Unit) , such as LCB, PDP, etc, maintaining these factors are very important to produce good products. Therefore, PHT is used in these kinds of environment to maintain the appropriate production state.
PHT stands for particle, humidity and temperature. It is a monitoring equipment about these factors.