The equipment is mainly composed of cabinet, heating system, refrigeration system, air circulation system and control system.
The test box is perfectly designed, processed and formed by CNC machine tools, and adopts a non-reaction handle, which is easy to operate.
The door seal is made of refined silicone rubber, so that there is no aging and hardening phenomenon at high and low temperatures.
The inner liner is imported SUS304 stainless steel plate, and the shell is A3 plate spraying, which is more smooth and beautiful.
The insulation system uses ultra-fine glass fiber or rigid polyurethane foam to fill the insulation area to ensure the temperature inside the cabinet.
The independent heating and cooling system makes the equipment more effective in heating and cooling, and the refrigeration system is a fully automatic control and safety protection coordination system.
The use of multi-wing type strong air supply circulation avoids any dead angles and can make the temperature distribution in the test area uniform.
The air circulation outlet and return air design, the air pressure and air speed meet the test standards, and can make the temperature reheating time fast at the moment of opening the door. TEMI430 temperature and humidity programmable controller, digital display, microcomputer control temperature and humidity, stable performance, more efficient work.

GB/T2423.1-2001 Basic Test Procedures for Electrical and Electronic Products Test A: Low temperature test method
GB/T2423.2-2001 Basic Test Regulations for Electrical and Electronic Products Test B: High Temperature Test Method
GB/T2423.3-2006 Environmental test methods for electrical and electronic products Test Cab: constant humidity and heat test
GB2424.1-89 Basic environmental test regulations for electrical and electronic products Guidelines for high temperature and low temperature tests
GB/T2324.2-1989.GB/T2423.1-1989.GB/T2423.4-1993 and other national standards

model		HS-50B	HS-100B	HS-150B	HS-250B	HS-500B	HS-800B	HS-1000B	HS-1500B
Studio size: mm		400×350×400	500×450×500	500×500×600	600×520×800	800×700×900	800×1000×1000	1000×1000×1000	1500×1000×1000
Overall dimensions: mm		820×860×1400	920×960×1500	920×1050×1670	1020×1050×1870	1220×1230×2040	1280×1500×2030	1420×1530×2200	1980×1530×2200
Voltage/power		220V/2.5KW	380V/3KW	380V/3.5KW	380V/4.5KW	380V/5KW	380V/5.5KW	380V/7KW	380V/8KW
Technology  Parameters	Temperature range		0℃～+100℃
	Humidity range		30～98％R.H
	Humidity deviation		+2 -3%％R.H
	Temperature deviation		±2℃
	Fluctuation/uniformity		≤±0.5℃/≤2℃
	Rate of warming		1.0～3.0℃/min
	Cooling rate		0.7～1.0℃/min
box  Materials	Outer carton material		A3 steel plate electrostatic spraying/SUS304 stainless steel matte line hairline treatment
	Inner box material		Imported SUS304 stainless steel plate
	Insulation		Microfiberglass insulation cotton/rigid polyurethane foam
	The box door is sealed		Double-layer high, low-temperature anti-aging and hardened refined silicone seals
Hot and cold  exchange  system	controller		TEMI430 temperature and humidity programmable controller  , digital display, microcomputer control
			Accuracy range: temperature ±0.1°C Display accuracy: temperature ±0.1°C
	Temperature sensor		Platinum resistor PT100Ω/MV
	circulatory system		Temperature-resistant and low-noise motor, extended shaft, stainless steel multi-blade centrifugal blades
	Water supply method		It is automatically controlled by electronic liquid level controller. And the excess water can be recycled. With water shortage alarm
	Humidification method		External isolation type, all-stainless steel electric heating steam generation humidification mode
	Dehumidification method		The condensation method of evaporator coil dew point temperature laminar flow contact dehumidification method is adopted
	Heating method		Nichrome alloy electric heating heater
	Refrigeration method		Unit cooling method / dual (stacked) cooling method (air cooling)
	cooler		“Dongbei” multi-stage diaphragm evaporator
	Compressor		“Dongbei” fully enclosed refrigeration compressor/”Dongbei” fully enclosed refrigeration compressor unit
Security devices			Power supply overload, leakage, overtemperature, water shortage protection (with audible prompt), fast fuse, compressor overvoltage protection
Standard configuration			High and low temperature resistant tempered glass internal heating insulating glass observation window: 220×180 (mm) one, one light, one test lead hole ¢50mm, 2 sample holders, 1 test lead hole, one set of casters
Use ambient temperature			15℃～＋30℃ ≤85％R.H

Note: 1. “HS” is the model of the constant temperature and humidity test chamber.
2. The technical parameters are measured at the ambient temperature ≤25°C.
3. The above is a standard test chamber, which can be customized according to the specific requirements of users.
4. Non-standard “constant temperature and humidity laboratory” can be customized according to the specific requirements of users.
5. The height of the overall dimension does not include the height of the casters at the bottom of the box.

Reference Figure: