High and low temperature alternating humidity test chamber, constant temperature and humidity

This series of constant temperature and humidity test chambers is suitable for reliability testing of industrial products, with the characteristics of temperature and humidity control accuracy and wide control range. The performance indicators meet the requirements of GB517023.56-95 "Basic Parameter Calibration Methods for Environmental Testing Equipment for Electrical and Electronic Products - Low Temperature, High Temperature, Constant Damp Heat, and Alternating Damp Heat Test Equipment".

Lower component composition:

The function of the test chamber is to provide a testing environment with constant high and low temperature humidity, and alternating high and low temperature humidity; Including refrigeration system, heating system, humidification/dehumidification/water system, air duct system, control system, system safety protection device, etc;

Main technical indicators of the test chamber

1. Studio size: 400 * 400 * 500mm (depth x width x height);

2. Outer box size: 950 * 970 * 1700mm

3. Temperature range: 40 ℃ to+150 ℃; Temperature control accuracy: 001 ℃

4. Temperature fluctuation: ≤± 0.5 ℃;

5. Temperature uniformity: ≤ 1 ℃;

6. Temperature deviation: ≤± 2 ℃;

7. Heating and cooling rate: from+20~. 20 ℃, about 30 minutes; from+20~100 ℃, about 40 minutes

8. Humidity range: 20% -98% RH (AT+25 ℃~-85 ℃)

Humidity control accuracy: ± 0.1%

9. Humidity error:+2/-3% RH (above 75% RH), ± 9% RH (below 75% RH)

10. Wind speed; 1.7 ～ 2.5m's;

(The above indicators were measured under ambient temperature ≤ 25 ℃, normal pressure, no-load and no-load conditions, and within a space of 16 meters from the inner wall of the box.)

11. Power: about 3.5Kw;

12. Power supply: 220V ± 10% V; 50Hz;

Meet relevant standards and test methods:

T2423.22-8TNbGJB1032-90

MIL-STD-2164/(E/C)

GJB150.9-86

GB/T2423.4.-93

GB/T2423.34-86

Structural form:

The integrated structure includes the test box, refrigeration system, heating and humidification system, air conditioning system, electrical control cabinet, and refrigeration unit as a whole. The refrigeration unit is located at the bottom of the box, and the electrical control part is placed on the side of the test box for easy operation.

Box:

a) In the air duct interlayer at one end of the studio, heating humidifiers, refrigeration evaporators, blower motors, fan blades and other devices are distributed;

b) There is one cable threading hole on the side of the test box, with a size of 50mm in the middle;

c) The test chamber workshop is made of 1mm thick SUS304 stainless steel plate, and the outer shell of the box is made of 1mm thick cold plate baked paint

d) The insulation material is made of polyurethane foam with a thickness of 100mm, which has good insulation effect. The outer surface of the test chamber does not frost or condense.

e) The studio is equipped with two adjustable height stainless steel strip shelves; f) The box is equipped with a condensate drainage outlet.

Gate: