Talk about the six major systems of high and low temperature test chambers

The high and low temperature test chamber is composed
of refrigeration unit, heating system software, automatic control system, environmental humidity system software, exhaust air respiratory system, and controller system software.
The following describes the principle and work process of a number of key system software: 1.
Automatic control system: The automatic control system is the key to the comprehensive test chamber, which determines the temperature speed, precision and other key index values
of the tester.
2.
Environmental humidity system software: The temperature system software is divided into two sub-systems
: humidifier and dehumidification.
It is generally selected to immediately introduce the bottom pressure vapor into the space humidifier
in the laboratory.
This type of humidifier way, faster, humidifier handling sensitive, especially in the heat drop is very easy to maintain the mandatory humidifier
.
3.
Controller system software: The key to the controller is the temperature and temperature sensor
.
Humidity sensors are more used in platinum electric groups and platinum thermal resistors
.
4.
Exhaust respiratory system: The gas respiratory system generally consists of
an axial fan and a motor that drives its operation.
It shows the circulation system
of the gases in the tester.
5.
Refrigeration unit: The refrigeration unit is one of
the important parts of the high and low temperature test chamber.
The refrigeration machine of the high and low temperature test chamber adopts a cascade refrigerator
.
The refrigeration unit of the high and low temperature test chamber is composed of two parts, which are called the high temperature part and the ultra-low temperature part, and each part is a relatively separate refrigeration unit
.
The volatile digestion and absorption of refrigerant in the high temperature part is gasified by the heat dissipation of the refrigerant in the ultra-low temperature part; The volatilization of the ultra-low temperature part of the refrigerant is carried out from the other half (the gas in the tester) cooled by water to obtain the cold amount
.
The middle of the high temperature part and the ultra-low temperature part is an evaporative condenser, which is the cooler of the high temperature part, which is the cooler
of the ultra-low temperature part.
6.
Heating system software: It is the key to the composition of a high-power resistance wire, because the heating speed specified by the experiment is very large, so the output power of the heating system software is relatively large, and the bottom plate of the tester is also equipped with an electric heater
.