The equipment is mainly composed of cabinet, refrigeration system, heating 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 temperature control adopts imported instruments, with the function of P.I.D automatic calculation, and the humanized design of the operation method is easy to learn and use.
The independent heating and cooling system makes the equipment more effective in improving heating, cooling and efficiency.
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.

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
GB2424.1-89 Basic environmental test regulations for electrical and electronic products Guidelines for high temperature and low temperature tests

model		GDW-50A(B/C)	GDW-100A(B/C)	GDW-150A(B/C)	GDW-250A(B/C)	GDW-500A(B/C)	GDW-800A(B/C)	GDW-1000A(B/C)	GDW-1500A(B/C)
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		820×710×1400	920×850×1500	920×850×1670	1020×870×1870	1260×1100×2040	1280×1480×2030	1420×1390×2200	1980×1480×2200
Voltage/power		Type A: 220V/2KW  Type B: 220V/2.5KW  Type C: 220V/4KW	Type A: 220V/2.5KW  Type B: 380V/3.5KW  Type C: 380V/4.5KW	Type A: 220V/3KW  Type B: 380V/4KW  Type C: 380V/5KW	Type A: 220V/3.5KW  Type B: 380V/4.5KW  Type C: 380V/5.5KW	Type A: 220V/4KW  Type B: 380V/6KW  Type C: 380V/8KW	Type A: 220V/4.5KW  Type B: 380V/6.5KW  Type C: 380V/8.5KW	Type A: 220V/5KW  Type B: 380V/7KW  Type C: 380V/9KW	Type A: 380V/7KW  Type B: 380V/9KW  Type C: 380V/12KW
Technology  Parameters	Temperature range	Type A -20°C~+150°C/ Type B -40°C~+150°C/ Type C -70°C~+150°C
	Fluctuation/uniformity	≤±0.5℃/≤2℃
	Rate of warming	1.0～3.0℃/min
	Cooling rate	0.7～1.0℃/min
Box material	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 hardening refined silicone sealing strips
Hot and cold  exchange  system	controller	Japan imported “Fuji” meters
		Accuracy range: temperature ±0.1°C, indication accuracy: temperature ±0.1°C, resolution: ±0.1°C
	Temperature sensor	Platinum resistor PT100Ω/MV
	circulatory system	Temperature-resistant and low-noise motor, single-cycle, extended shaft, stainless steel multi-blade centrifugal blade
	Heating method	Nichrome alloy electric heating heater
	Refrigeration method	Unit cooling method / dual (stacked) cooling method (air cooling)
	cooler	French “Taikang” multi-stage diaphragm evaporator
	Compressor	French “Taikang” fully enclosed refrigeration compressor / French “Taikang” fully enclosed refrigeration compressor unit
Timing function		0.1～99.99（S、M、H）
Security devices		Power overload, leakage, grounding, over-temperature protection (with audible prompt), fast fuse, compressor over-voltage 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, two sample holders, with casters
Supply voltage		ACø220V·50HZ/380V·50HZ
Use ambient temperature		15℃～＋30℃ ≤85％R.H
Optional accessories		Controller: “TEMI360” intelligent programmable controller / “TEMI880” touch screen controller imported from South Korea (optional, additional charge will be charged when ordering).