Programmable Constant Temperature and Humidity Test Chamber Programmable High Temperature Constant Temperature and Humidity Test Chamber

1、 Scope of application of constant temperature and humidity test chamber:

Suitable for the research and development of heat resistance, cold resistance, dry resistance, and testing specifications for quality management engineering in the defense industry, aerospace industry automation components, automotive components, ship components, electronic and electrical components, plastic and chemical industries, food industry, pharmaceutical industry, and related products.

2、 Meet the standards:

GB/T2423.1-2 Basic Environmental Testing Procedures for Electrical and Electronic Products - Tests. A: Low temperature test method, Test B: High temperature test method

3、 Small constant temperature and humidity chamber execution and compliance with standards:

1. GB/T10589-1989 Technical conditions for low-temperature test chambers;

2. GB/T10592-1989 Technical conditions for high and low temperature test chambers;

3. GB/T2423.4-93 (MIL-STD810) Method 507.2 Procedure 3;

4. GB2423.1 Low temperature test, test A

GB2423.2 High Temperature Test, Test B. GB/T2423.34-2005 High, Low, and Temperature Combined Cycle Test.

1. Temperature range: 0 ℃/-20 ℃/-40 ℃/-50 ℃/-60 ℃/-70 ℃/-85~+150 ℃.

2. Control stability: ± 0.5 ℃

3. Distribution uniformity: ± 1.5 ℃

4. Temperature deviation: ≤± 2 ℃

5. Normal heating time:+20 ℃~+150 ℃, less than 45 minutes, non-linear no-load.

6. Normal cooling time:+20~-20 ℃ less than 45 minutes/+20~-40 ℃ less than 60 minutes/+20~-50 ℃ less than 65 minutes

minute. +20~-60 ℃ less than 70 minutes/+20~-70 ℃ less than 75 minutes/20~-85 ℃ less than 100 minutes Non wired

Sexual empty load

4、 Structure: The overall structure is in the form of a body, with the cooling and freezing system separated from the box.

1. Inner box material: SUS 304 # mirror stainless steel plate

2. Outer box material: SUS 304 # stainless steel plate/special anti rust treated cold-rolled plate spray painted paint (computer white)

Five; refrigeration system

The design of the refrigeration system applies energy regulation technology, which can ensure the normal operation of the refrigeration machine, and effectively regulate the energy consumption and cooling capacity of the refrigeration system, so as to maintain the operating state of the refrigeration system. By using the Balanced Temperature Control (BTHC) method, the control system automatically calculates the output of the heater based on the set temperature point through PID calculation when the refrigeration system is working continuously, ultimately achieving a dynamic balance. The refrigeration unit adopts a stacked binary refrigeration system.

The control system adopts the original imported Chinese TEMI880 dedicated temperature program controller to control and adjust the temperature inside the test chamber, and automatically determine the working status of the executing components (such as heaters, compressors, fans, etc.).

1. Display: 5.7 "320 × 240 dot matrix color LCD display. (TEMI880, South Korea)

2. Operation mode: fixed value or program

3. Setting method: Chinese menu, touch screen input

4. Program capacity: capable of storing 100 sets and 1000 segments of test programs

5. Program length: Each group of programs has an additional 99 segments

6. Loop times: Each program segment can loop 999 times

7. Setting range: Temperature: -100 ℃~+200 ℃, Humidity: 0~99.9% RH,

Time: 0-99 hours and 59 minutes

8. Resolution: Temperature: 0.1 ℃, Humidity: 0.1% RH, Time: 0.1min

9. Input: PT100 platinum resistor

10. Communication function: This controller is equipped with RS232/485 interface

6、 Air conditioning system

1. Air control method: Emphasize circulating ventilation and Balanced Temperature Control (BTC). This method refers to the control system controlling the output of the heater based on the set temperature point through PID automatic calculation output under continuous operation of the refrigeration system, ultimately achieving a dynamic balance.

2. Air circulation device: Built in circulation air duct and long axis ventilation fan, using efficient refrigeration and energy regulation system. Effective heat exchange is achieved through efficient ventilation fan to achieve temperature change. By improving the airflow of the air, the air flow rate and the heat exchange capacity of the heater and air cooler are increased. The temperature uniformity of the test chamber is greatly improved by adjusting the air outlet with adjustable air plugs

Seven; Full protection device:

1. Studio upper limit temperature overheating alarm;

2. Fan overcurrent alarm;

3. Overheating alarm for refrigeration compressor;

4. Refrigeration compressor overcurrent alarm;

5. Refrigeration compressor overvoltage alarm;

6. Power phase loss and phase sequence error alarm

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