Overview
Programmable constant temperature and humidity testing machine (model NBC-50L-20) is a high and low temperature heat and humidity alternating test chamber, mainly used to detect the performance of materials in various environments, test heat resistance, cold resistance, dry resistance, moisture resistance characteristics. It is suitable for mass detection of products in the fields of electronics, electrical appliances, communications, instrumentation, vehicles, plastic products, metals, food, chemistry, building materials, aerospace, etc. Using equilibrate Conditioning Control System (BTHC), the data in the box is transmitted to the controller through the induction system. The controller controls the SSR to realize multi-stage intelligent output, equilibrate the temperature and humidity system power, ensure stable temperature and humidity, and has energy-saving functions, reduce the use of power, and ensure long-term accurate operation.
Features
1. Beautiful appearance, reasonable structure, precise process, simple and convenient operation, stable and reliable performance.
2. The controller adopts large-scale color liquid crystal man-machine touch dialog LCD interface, Chinese and English display system operation status and setting program Linear dispersion, support RS232 computer interface remote control.
3. The refrigeration circulation system adopts the original imported Japanese "Sanyo" brand fully enclosed Compressor (optional French Taikang), the components come from Japan, France, the United States, Italy, etc., and the refrigerant is the American environmentally friendly refrigerant R23A, R404A.
4. Reserve a 50mm diameter test hole on the left side of the box.
5. With Fully Automatic, High Precision System Loop, P.L.C Lock Processing, P.I.D Automatic Calculation Control, High Accuracy and High Stability of Temperature in the Whole Zone.
6. Specially designed air circulation circulation system and sensing system, the trend and return air sensor control to ensure uniform temperature without dead ends.
7. Increase the observation window, 4 layers of tempered Glass, wide field of vision.
8. Comprehensive protection system includes power overload, leakage, control loop overload, short circuit, Compressor, grounding, over-temperature protection and alarm sound prompt, automatically display the fault point and stop.
Principle
The equilibrate Conditioning control system (BTHC) is adopted. The induction system transmits the actual data in the test chamber to the controller. The controller realizes multi-stage intelligent output by controlling the SSR, and the equilibrate temperature and humidity system outputs power to ensure that the temperature and humidity in the box are fully stable. The system has energy-saving functions, reduces the power used by the instrument, and ensures long-term accurate and stable operation. The heating system adopts multi-stage heating pipes with PID modules to ensure temperature stability and energy saving; the humidification system adopts a circular split humidifier to avoid low temperature freezing. The humidification pipe can be dry burned for more than 1 hour, and the high temperature alarm module is used to extend the life; the refrigeration system adopts imported Compressors and components to realize forced refrigeration and thermostatic refrigeration segmented control.
Applications
Electronics, electrical appliances, communications, instrumentation, vehicles, plastic products, metals, food, chemicals, building materials, aerospace
Steps
Connect the power supply to ensure that the voltage is 220V/50HZ, and the voltage fluctuation is allowed to be +/- 10%.
2. Open the test chamber door and adjust the shelf spacing or remove the shelf as needed.
3. Set the temperature and humidity parameters through the touch screen controller, such as Temperature range -20~ 150 ℃, humidity control range 20~ 98% R.H.
4. Start the instrument, the system automatically controls the temperature and humidity through P.I.D calculation, and observes the monitoring operation status of the display screen.
5. Use test holes for external connections (if required).
6. After the test is completed, turn off the instrument and disconnect the power supply.
Notice
• Miscellaneous items should not be placed within 60CM around the instrument to ensure good ventilation.
• The installation ground should not be severely tilted and should be placed horizontally.
• The recommended environment temperature is 0~ 30 ℃, and the performance guarantee environment is 5~ 25 ℃.
• The humidification system has water quality filtrating, regular inspection to avoid blockage.
• The instrument has a comprehensive protection system, which automatically stops and displays the fault point when there is an abnormality, and needs to be dealt with in time.
• Use the bottom universal wheel when moving the instrument, pay attention to load bearing and shock absorption.
• The single-layer load of the shelf should not exceed 20KG to avoid overloading.
