led temperature and humidity testing machine with a large range of temperature and humidity control, can provide: a constant temperature test, humidity test, a constant low temperature test, constant heat chamber, high and low temperature heat combined cycle test. Suitable for electronic, electrical, communications, instrumentation, vehicles, plastic products, metal, food, chemical, building materials, medical, aerospace and other products quality testing purposes. Dongguan Wei Huang Test Equipment Co., Ltd. is located in convenient transportation, manufacturing developed known as the world's factory in Dongguan City, is specialized in test equipment development, production and sales of professional manufacturers. wewon Brand Institute has been set up by the school, defense, military and other sectors famous enterprises of all ages, trust and support, the company has been grateful, 2014 will once again strongly support our customers feedback has been spent since the end of 2014, the Company will Regardless of who carried out the new and old customers to buy our equipment, will enjoy a 10% discount on the ex-factory equipment, in addition, the company will also delivery New Year spree Oh! A lot of opportunities, constantly surprises! The company Jigou hotline: 0769-28337076 led a constant temperature and humidity testing machine technical indicators, humidity range: 5% ~ 98% RH (optional item) (conventional:? 30% ~ 98% RH) 2, the degree of humidity interpretation: 0.1% RH 3, humidity deviation: ≤ ± 2.5% RH 4, the temperature control range:? General -40 ℃ ~ + 150 ℃, -120 ℃ ~ + 150 ℃ (option) 5, the temperature Sharpness: 0.01 ℃ 6 , fluctuation: ± 0.5 ℃ 7, the temperature deviation: ≤ ± 2 ℃ 8, heating rate: 2.0 ~ 3.0 ℃ / min 9, cooling rate: 0.7 ~ 1.0 ℃ / min led a constant temperature and humidity test system cooling system, cooling is Humidity Chamber important part, is to determine the quality of a constant temperature and humidity important performance parameters, which includes a compressor, a condenser, a throttling device, evaporator four components. Compressor refrigeration system is the heart, that is the suction temperature low-pressure gas, a high temperature high pressure gas is condensed into liquid by heat discharged by the fan to remove heat, so that hot air equipment following reasons, and then through the throttle to a low pressure liquid, followed by evaporator temperature low-pressure gas and finally back to the compressor; refrigerant absorbs heat in the evaporator to complete the re-gasification process and absorb heat, to achieve the purpose of cooling, to complete the cooling process. 2, in order to ensure the chamber of the cooling rate and the minimum temperature requirements? Dongguan City-Sound Test Equipment Co., cascade refrigeration system using imported compressor refrigeration system composed of the refrigeration system has a reasonable match, high reliability, easy to use and maintain. 3, refrigeration works: refrigeration cycle are used against the card if the loop, which consists of two isothermal and two adiabatic process, whose process is as follows: adiabatic compression of the refrigerant through the compressor to a higher pressure, so that the power consumed exhaust temperature, after the refrigerant through the condenser and the surrounding medium isothermally heat to a heat exchange medium four weeks. After the refrigerant flows through the shutoff valve adiabatic expansion work, then the refrigerant temperature decreases. Finally, the refrigerant passes through the evaporator isothermally absorbs heat from the high temperature object, the object to be cooled so that the temperature decreases. This cycle of the cycle so as to achieve the purpose of cooling. 4. The application of the refrigeration system design energy regulation technology, an effective treatment can guarantee but also on energy and cooling capacity of the refrigeration system for effective regulation in the case of the normal operation of the refrigeration unit, the refrigeration system operating costs down to more economical status. led temperature and humidity testing machine features a high-texture appearance, body mining circular shape, the surface treatment matte stripes, and no reaction with flat handle, easy to operate, safe and reliable. 2, rectangular complex layers of glass view of the window, you can use the test product was observed in the test, the window with anti-sweat heater device to prevent condensation of water droplets, and high-brightness PL fluorescent lighting to keep the box. 3, door isolated double airtight packing can be effectively cut off from the internal temperature of the leak. 4, can be connected with a water supply system, easy to add humidifier water barrel, and automatically recycled. 5, the compressor cycle system uses the French "Taikang" brand, more effective removal of lubricant between the condenser and the capillary and the full range of environmentally friendly refrigerant (R23, R404, R507). 6, the controller uses imported LCD display screen, can display the measured value and the set value, time. 7, the controller has a multi-stage program editing, and temperature and humidity do fast (OUICK) or slope (SLOP) control. 8, built-in mobile pulley easy to move and place and has a strong positioning screw position. Constant temperature and humidity testing machine led the implementation of standards and test methods GB11158? temperature chamber technical conditions GB10589-89? cryogenic chambers technical conditions GB10592-89? high temperature chamber technical conditions GB / T10586-89? humid chamber technical conditions GB / T2423.1-2001? cryogenic chamber test method GB / T2423.2-2001? temperature chamber test method GB / T2423.3-93? humid chamber test method GB / T2423.4-93? alternating heat test method GB / T2423.22-2001? temperature test methods IEC60068-2-1.1990? cryogenic chamber test method IEC60068-2-2.1974? temperature chamber test method GJB150.3? high-temperature test GJB150.4? cryogenic test GJB150.9? Dongguan Wei Huang damp heat test Test Equipment Co., specializing in the development, production and sales of equipment are standard temperature and humidity box, constant temperature and humidity equipment, three box-type thermal shock chambers, thermal shock chambers, high and low temperature heat box, a large warehouse temperature and humidity, rapid heating and cooling chamber, salt spray chamber, vibration test machine, large battery drop test machine, xenon lamp aging chamber manufacturers, weathering chamber, dust and water chamber, tensile testing machine, phone performance test equipment, batteries security equipment, industrial ovens, environmental simulation testing equipment and so on, Dongguan Wei Huang Test Equipment Co., Ltd. Contact: Liu Xiaofang / Business Unit Tel: 0769-28337076 Fax: 0769-85477176 phone: 15907698727 QQ: 2519418271 E-mail: 15907698727@139.com http://www.wewontec.com Address: Dongcheng District, Dongguan City Industrial Zone Finance Mulberry 金玉岭 A three-way on the 9th