High-Low Temp. Test Chamber

Performance characteristics：

1. In the refrigeration system, the condensation adopts air cooling mode, which has a wide temperature control range, which can meet the user's various needs.
2. With a unique balanced temperature control method, with stable and balanced heating capacity, high precision and high stable temperature control can be carried out;The temperature is displayed by touch screen, easy to read, precise and convenient.
3. Adjust the temperature error value to meet more accurate test conditions.With the setting of temperature, it is easy to operate the refrigeration circuit.
4. The box door is equipped with a large observation window, which can observe the test status of the test sample at any time.
5. with functions of high temperature on, can open the refrigerator when the temperature in the oven to 150 ℃, facilitate continuous round-trip experiment was carried out between the high temperature and low temperature.
6. Self-diagnosis function, overload protection of refrigerator, high pressure switch, overload relay, thermal protection device, etc., to ensure the safety of use.
7. Use the multi-wing fan to supply the wind with strong air circulation and avoid any dead Angle, so that the temperature can be evenly distributed in the test area.
8. Wind circulation is designed with wind return wind. The wind pressure and wind speed are in accordance with the test standard.
9. Temperature rise, cooling and system complete independence can improve efficiency, reduce test cost, increase life span and reduce failure rate.

Technical Parameters：

Model	GD-4525	GD-4550	GD-45A0	GD-7525	GD-7550	GD-75A0
cubage	220L	500L	1000L	220L	500L	1000L
Temp. range	-45℃～＋150℃			-75℃～＋150℃
Temp. accuracy	±0.5℃	±0.5℃	±0.5℃	±0.5℃	±0.5℃	±0.5℃
Temperature uniformity	≤2℃
Heating rate	2.8℃/min
Cooling rate	2.5℃/min
Heating power	2KW	3.5KW	5KW	2KW	3.5KW	5.5KW
	Nickel-chromium alloy electric heater, control itself has 2 protections, add independent  temperature limiter
Controller	LNEYA  PLC AndModules
Program editor	Can edit 15 programs, each program can be programmed 45 steps.
Touch screen	LNEYA  7 inch color touch screen
Data record	Temperature curve record (can be exported to EXECL format by U disk), alarm information record.
Communication	RS485 interface Modbus RTU protocol
Compressor	Emerson Copeland Scroll Flexible Compressor			France Taikang/ItalyDorin Compressor
Drying filter	Danfoss/Emerson.
Oil separator	Emerson
expansion valve	Danfoss thermal expansion valve.			Danfoss thermal expansion valve  + Emerson electronic expansion valve.
Refrigerant	R404A			R404A+R23 Mixed refrigerant
High temperature cooling	Can satisfy 150 degree direct start compressor cooling.
Sight window	200×300	200×300	300×400	200×300	200×300	300×400
Instrument connection	Leftφ50	Leftφ50	Lefφ100	Leftφ50	Leftφ50	Leftφ100
Heat preservation	Polyurethane foam + ultra fine glass fiber.
Liner material	SUS304 Stainless steel plate
Shell material	Cold rolled plate spray
Inner dimension mm	650*600*760	800*735*800	1000*1000*1000	600*650*760	800*735*800	1000*1000*1000
Dimensions mm	950×1100×1860	1100×1250×1900	1300×1500×2150	950×1100×1860	1100×1250×1900	1300×1500×2150
Weight	280kg	390kg	620kg	320kg	420kg	680kg
Power380V	3.8kw	6.5kw	9.5kw	5kw	8.5kw	12kw
Standard Accessorias	1 copy of product specification, 2 pieces of test stand, 1 piece of silicone rubber.；
Optional	220V 60HZ three-phase, 460V 60HZ three-phase
Optional	Optional: wider range of temperature, minimum temperature to -150 degrees, maximum  temperature to 300 degrees.
Optional	Optional cooling method for water cooling (low noise, good cooling effect)
Optional	Explosion-proof type is optional.