Alternating high and low temperature heat chamber

First, the controller: high and low temperature heat chamber controller uses the full import of LED digital display button display, English interface (Korea TEMI300) or LCD touch screen, Chinese and English switch interface (Korea TEMI880), or the import of Japanese "OYO" digital touch button temperature and humidity control device. Temperature and humidity control can be displayed directly, eliminating the original temperature and humidity contrast defects. 2. Enter the data and test conditions, the controller has a locking function to avoid man-made touch and change the temperature. 3. controller with PID automatic calculation function, can be corrected immediately to changing conditions of temperature and humidity, the temperature and humidity control is more precise and stable. The optional printer. You can print the record set parameters and scan the temperature and humidity curve. 4 ~ 200mA standard signal. 5. The electrical control of the main parts are imported, "Schneider" and "Merlin" element, better control of temperature and humidity Second, the operation control system: (a) Cooling System: 1. High and low temperature heat chamber refrigerator uses France Taikang totally enclosed (or semi-closed Germany Copeland) compressors. 2. The refrigeration system uses low-temperature unit or glycol loop system design. Air-cooled single compression / air cascade compression refrigeration method (ii) the air duct circulation system: Using a multi-blade centrifugal blower powerful air circulation, to avoid any dead end, the test area temperature and humidity distribution. 2. air duct return air design cycle of wind, air pressure, wind speed are the test criteria, and can open the door to faster time to stabilize the temperature and humidity moment. 3. Using can up, down, left or right to adjust the wind deflector to ensure that the temperature and humidity evenly distributed. (C) Humidification dehumidification system: 1. Humidification: fully independent system, external isolated stainless steel surface by evaporative humidifier, wet steam humidification formed by heat, humidity is detected by the probe. 2. Dehumidification: The dew point temperature of the evaporator coil laminar contact with dehumidification. 3. Water: hidden water tanks, small pump automatically pumped into the humidification barrels, recoverable over water saving water. Heating, cooling, humidification and dehumidification system is completely independent can improve efficiency and reduce testing costs, increase life expectancy and lower failure rate. Third, the standard: high and low temperature heat chamber performance indicators in line GB5170,2,3,5,6-95 "electric and electronic products environmental testing equipment basic parameters of test methods and low temperature, high temperature, constant heat, alternating hot and humid test equipment." requirements GB / T10589-1989 temperature chamber Technical conditions GB / T10586-1989 heat chamber and technical conditions GB / T10592-1989 technical conditions GB2423.1-89 high and low temperature and low temperature test Aa, Ab GB2423.1-93 (IEC68 1-2-3) Damp heat test Ca MIL-STD810D Method 502.2 GB / T2423.4-93 (MIL-STD810) method 507.2 procedure 3 GJB 150.9-8 damp heat test GB2423.34-86, MIL-STD883C method 1004.2 combination of temperature and humidity four-cycle test, the product uses: high and low temperature heat chamber for electrical, electronics, instrumentation and other products, parts and materials in high temperature, alternating hot and humid environment storage, transportation, use of adaptive testing; and is all kinds of electronic, electrical, electronics, plastics and other raw materials and components were cold, heat, moisture, resistance to dry reliability test equipment test and quality control engineering; especially suitable for fiber optic, LED, crystal, inductors, PCB, battery , computers, mobile phones and other products, high temperature, low temperature resistance, heat cycle test.