I. Technical specifications:

1. Temperature range: -40℃~150℃

2. Temperature fluctuation: ±0.5℃

3. Temperature uniformity: ±2℃

4. Heating rate: 3℃/min

5. Cooling rate: 0.7~1.0℃/min

6. Studio dimensions (D×W×H mm): 500×500×600

7. Instrumentation: SWS550 programmable high-resolution color touch screen temperature controller, supporting English and Chinese; computer PID control, SSR output operation; memory program group with 10 groups, each program group containing 16 program segments, totaling 160 segments; segment operation time up to 99 hours and 59 minutes; maximum total cycles of 999, partial cycles up to 99; real-time data storage through U-disk interface, and viewing parameters and operation charts through a computer.

II. Structure, Material, and Features:

1. The test chamber is divided into four main parts, namely: the test chamber body, the air supply and circulation system, the refrigeration system, and the heating system;

2. The inner shell of the test chamber is made of SUS304 stainless steel;

3. The shell of the test chamber is made of high-quality cold-rolled steel plates with electrostatic spraying;

III. Electrical control system:

1. Controller model: SWS550

2. Display: 7-inch touch screen temperature controller

3. Operation mode: fixed value/program mode

4. Setting method: Touch input through Chinese and English menus

5. Temperature: Adjusted according to the temperature operating range of the equipment (upper limit +5℃, lower limit -5℃)

6. Setting range: Humidity: (0~100) %RH (temperature and humidity testing equipment)

7. display resolution

Temperature: 0.1℃

Humidity: 0.1% Relative Humidity

Time: 0.1min

8. Input: Thermocouple (platinum resistance/voltage/current, etc., according to equipment requirements)

9. Control method: Anti-windup PID

BTHC Balanced Temperature and Humidity Control Method (Temperature and Humidity Testing Equipment)

10. Auxiliary functions: fault alarm and cause, handling prompt function, power-off protection function, upper and lower temperature limit protection function, timing function (automatic start and automatic stop operation), self-diagnostic function.

11. Temperature and humidity measurement

Temperature: PT100 type armored thermal resistor

12. All electrical appliances are sourced from well-known brands such as Omron, Delixi, and Yangming

IV. Refrigeration system:

1. Compressor: Originally imported from France, environmentally friendly "Taikang" compressor

2. Refrigeration method: single-stage refrigeration

3. American "Aigao" dry filter

4. Italian "Castello" solenoid valve

5. Expansion valve: Originally imported from Denmark, "Danfoss"

6. Throttling devices: thermal expansion valve, capillary tube

V. Protection system:

1. Overall equipment overtemperature

2. Compressor overheat protection

3. Compressor overcurrent protection

4. Overall equipment timing

5. Quick-acting fuse

6. Fan overheat protection

7. Leakage operation indication, automatic shutdown after alarm, and other protections

8. Grounding protection

VI. Product Standards:

This equipment is manufactured based on one or a combination of the following standards:

GB 10589 Technical Conditions for Low Temperature Test Chamber

GB 10592 Technical Conditions for High and Low Temperature Test Chambers

GJB 150.3 Military Equipment Laboratory Environmental Test Methods - High Temperature Test

GJB 150.4 Military Equipment Laboratory Environmental Testing Methods - Low Temperature Testing

GB/T5170.2 Verification Method for Basic Parameters of Environmental Testing Equipment for Electric and Electronic Products - Temperature Testing Equipment

GB2423.1 Basic Testing Procedures for Electric and Electronic Products - Test A: Low Temperature Test Method

GB2423.2 Basic Testing Procedures for Electric and Electronic Products - Test A: High Temperature Test Method

GB2424.1 Basic Environmental Testing Procedures for Electric and Electronic Products - Guidance on High and Low Temperature Testing

GB2951 - Test Methods for Insulating and Sheathing Materials of Electric Cables - Low Temperature Test

GB2099-94, VDE0472, IEC884-1, GB/T2951.4-1997, etc