1, the overall structure, in line with international standardization box aesthetic, elegant appearance; lock device uses a lever to open the power structure, has a durable, easy to maintain; scientific aerodynamic wind tunnel structure, can greatly improve the uniformity of the temperature of the device sex. 2, hollow glass coated electric heating, low temperature no condensation; easy to observe the test sample test cases; 3, using Chinese color LCD touch interface plus Siemens high-performance programmable controller (PLC), together with our chamber special software, with automatic, intelligent, humane, and upper and lower temperature protection features. 4, refrigeration compressors and key parts are imported international brands, long-term reliable operation; environmentally friendly refrigerant cooling, in line with international requirements of the Convention. 5, a variety of options: RS232 / 485 communication interface, paperless recorders, remote temperature control system (including printers, communications software, computer and related fittings). Model HL701 HLD7025 HL705 HL71 performance parameters temperature range from -70 to + 150 ℃ temperature fluctuation ± 0.5 ℃ Temperature uniformity ≤2 ℃ temperature deviation ± 2 ℃ ramp rate selectable rate range: 0.7 ℃ / min ~ 3 ℃ / min standard load 5Kg ingots ingots 12Kg 25Kg 70Kg ingots ingots cold-rolled steel shell structure surface spray (computer color + blue) stainless steel liner polyurethane foam insulation refrigeration system Refrigeration two-stage compressor cascade cooling mode imported compressor chiller heater Nichrome wire heating observation window (mm) 200X270 300X400 400X500 test hole (mm) on the left side a Φ50 the left side of each one about Φ100 Φ100 a platinum resistance temperature sensor Pt100 Controller Siemens PLC controller, Siemens color LCD touch screen computer recording device micro-printer interface RS485 interface, RS232 converter cable, the PC operating software (optional) Internal dimensions (mm) D 450 600 700 900 W 450 600 800 1150 H 580 700 900 1100 Power AC380V? 50Hz three-phase four-wire + ground wire 1 standard configuration product specifications, test reports 1, certification and quality assurance * each 1 printed paper 5, 2 shelves, shelf strips 4. Meet the standards GB11158, GB10589, GB10592 \ GB / T2423.1, GB / T2413.2, GB / T2413.22, GJB150.3, GJB150.4