Gester Instruments | Professional Textile, Footwear and PPE Testing Equipments Manufacturers Since 1997
The function of constant temperature and humidity test chamber system
Constant temperature and humidity test chamber is the key to the product temperature humidity test machinery, equipment, machinery and equipment to complete the various temperature humidity environment simulation of its key by means of cooling, heating, environmental humidity and so on several constitute a complete system software, the following is to let us together to learn under constant temperature and humidity test chamber what are the major functional system: first, constant temperature and humidity test chamber heating system software: heating system software in the constant temperature and humidity test chamber is relative simple, the key consists of high-power resistance wire have heating equipment, because of temperature test chamber regulations speed is very big, so the test chamber heating system software of the output power is relatively large, and at the bottom of the test chamber will also set up the electric heater. Second, constant temperature and humidity test chamber refrigeration units, refrigeration units is an important part of the constant temperature and humidity test chamber, cooling method in machinery and equipment is to be refrigeration equipment and its auxiliary liquid nitrogen refrigeration, choose steam tighten type refrigeration equipment refrigeration, their primary and secondary by tightening machine, cooler, the throttle valve group, and air conditioning evaporator, because we test the temperature of the high temperature reaching - 55 ℃, unipolar cooling cannot consider meets the requirements, so the test chamber refrigeration methods generally choose cascade refrigeration. Three, constant temperature and humidity test chamber environmental humidity system software: constant temperature and humidity test chamber environmental humidity is divided into two subsystem, humidification and dehumidification humidifying method is sprinkling water steam humidification, humidification, humidification machine mouth, ultrasound and other various methods, dehumidification methods have refrigeration equipment to wet and dry to wet two kinds, in which the basic principle of refrigeration equipment to wet to wet is evaporative cooling to the moisture content of the following, make more than saturated moisture content of water vapor dissolving, sample reduces environmental humidity and is more common to wet method at the moment. Four, constant temperature and humidity test chamber: automatic control system of automatic control system is constant temperature and humidity test cases monitoring center, the automatic control system at all belong to the category of mobile phone software, it is decision of the constant temperature and humidity test chamber temperature, speed, precision, temperature and other critical overall goal. Machinery and equipment control panel now most chooses PID control, is also a few select PID controller design and phase composition of the control method. Five, the constant temperature and humidity test chamber sensor system software: constant temperature and humidity test chamber of the sensor is mainly temperature and temperature sensor, its function is to distinguish the temperature in the experiment box, electric group is a platinum temperature sensors is widely applied and heat resistance. There are two: accurate measuring method of environmental humidity dry bulb thermometer method and the equivalent substitution method of solid electronic sensors method. Because of the wet area ball method measuring accuracy is not high, today's test chamber is slowly and the solid sensors instead of wet ball to terminate the precise measurement of the ambient humidity. The above explanation is the function of constant temperature and humidity test chamber system, hope can help you, if you want to learn more about information of constant temperature and humidity test chamber, welcome to the online consulting service or call the company service hotline ( Website top right corner) For consultation, we will wholeheartedly provide high quality service for you! Tags: & nbsp constant temperature and humidity test chamber
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