Product details:
1. Model and name: High and low temperature impact test chamber (three box) HS/TCS series

2. Application and Limitations Explanation

2.1 Limitations on Test Samples
A) Testing and storage of samples of flammable, explosive, and volatile substances.
B) Testing and storage of corrosive substance samples. Testing or storage of biological samples.
C) Testing and storage of strong electromagnetic emission source samples.

3. Capacity and size
3.1 Testing Area Volume: The volume size can be customized according to customer requirements

4. Performance
Test conditions: The temperature of the equipment placement space is 23 ℃, and the equipment is unloaded.
High and low temperature impact temperature: low temperature: -10/-20 ℃/-40 levels, high temperature: 160 ℃.
Preheating temperature range of high temperature box: room temperature~200 ℃
Low temperature box pre cooling temperature range: -45 ℃
Temperature fluctuation: ± 0.5 ℃
Temperature uniformity: 3 ℃
Temperature deviation: 2 ℃
Heating time of the high-temperature chamber: 40 minutes from room temperature to 200 ℃.
Low temperature box cooling time: 90 minutes from room temperature to -45 ℃.
Temperature recovery time: 5 minutes (the time to reach the set value) from 70 ℃ to -10 ℃, and from -10 ℃ to 70 ℃, with a recovery time of 3 minutes.

Refer to the experimental standards
1. GB/T 2423.1-2001 Test A: Low temperature test method;

2. GB/T 2423.2-2001 Test B: High temperature test method;

3. GB/T2423.22-2002 Test N: Temperature Change Test Method

4. GJB/150.3-1986 High temperature test

5. GJB/150.4-1986 Low temperature test

6. GJB/150.5-1986 Temperature Shock Test

5. Structure and Materials
Outer box: After pickling, cold-rolled steel plate is sprayed with high-temperature electrostatic spray, presenting an orange patterned Weitu white.
Inner box: SUS304 stainless steel plate
Insulation layer: hard polyurethane foam and glass wool.
Box door: Single door test box.
Observation: There is a hollow heat-conducting defrosting glass observation window and LED lighting on the door.
Sealing: High quality foam silicone sealing strip.

switch valve
A、 Divided into high-temperature tank, low-temperature tank, and testing tank. The high and low temperature slots are used as energy reserves, and the testing slot is the user's experimental area.

B、 There are valves between the high and low temperature tanks and the testing tank, which automatically open the corresponding valves when impacted.

C、 There is an independent ventilation valve that operates to introduce ambient air during exhaust (room temperature recovery).

6. Air supply and temperature measurement system
Air supply characteristics: Horizontal air supply from the test chamber from right to left
Circulating motor: Su Heng silent motor.
Wind turbine: Multi blade centrifugal circulating fan with high and low temperature resistant aluminum alloy blades.
Sensor: T-type thermocouple sensor.

7. Freezing system
Cooling method: mechanical compression, cascade cooling.
Compressor: French Taikang fully enclosed refrigeration compressor, cascade refrigeration.
Refrigerant: Non fluorinated HFC R404A+R23
Condenser: air-cooled condenser, micro light motor.
Evaporator: High efficiency multi-stage aluminum alloy fin evaporator (thickened fin type)
Oil separator: Emerson
Expansion valve: Danfoss thermal expansion valve
Solenoid valve: Castell solenoid valve
Sight glass: Danfoss

System Characteristics
1. Automatically switch the flow rate of the refrigeration system according to different working conditions, and cut off excess systems in the constant section to maintain energy-saving operation.
2. Cooling control: Multi stage evaporator combination can achieve more uniform and efficient cooling exchange efficiency and refrigeration output.
3. The flow control is automatically adjusted by the corresponding thermal expansion valves;
4. Different temperature range impact: The multi-stage evaporator structure is correspondingly cut off, and the evaporation area is controlled to match the cooling capacity expansion valve. The cooling system output is used to reasonably reduce the output of the heater neutralization, achieving constant energy saving.

8. Heating system
Heating tube: finned nickel chromium alloy electric heating tube, fixed and installed with ceramic bracket.
Control method: The controller outputs signals and achieves high-precision contactless switch control through SSR solid-state relays.

9. Controller and control circuit - using touch screen program controller

Control mode: high-precision touch screen input mode.
Display: 7-inch color LCD screen
Input: 3 sets of inputs, supporting PT100, thermocouple T, K, E, etc
Accuracy: 0.1 high-precision sampling
Operation mode: Program operation mode
Output mode: PID+SSR/SCR automatic bidirectional synchronous output
Fault: Equipped with fault alarm output, humanized prompt of fault causes and troubleshooting methods

Software functions:
1. Temperature curve: Built in recording program, controller memory can store 24-hour operation for 300 days
Can easily generate temperature curve files automatically and save them as XLS tables;
2. External USB port: can be directly connected to a printer, enabling local data to be printed by wire,
Export historical curves and other data easily using a USB port and USB flash drive.

Control circuit components: The main components of the control circuit (indicator lights, button switches, relays, circuit breakers, AC contactors, etc.) are mainly Schneider brand components. Solid state relays use Gut brand components.

10. Protection function
1. Dual over temperature protection in the testing area
2. Equipped with a non fuse protection switch
3. Heater leakage protection switch
4. Compressor overload and overheating
5. Compressor high and low pressure protection
6. System overcurrent protection device
7. The controller self diagnoses faults and displays them

11. Other components

11.1 Standard configuration
1. Two sets of test racks
2. A set of 50MM diameter test hole soft plugs
3. Operation manual and maintenance manual
4. A set of load-bearing pulleys at the bottom of the box.

12. Usage conditions
1. Environmental temperature: 5 ℃ -20 ℃, with good ventilation around the equipment and no temperature accumulation.
2. Relative humidity: ≤ 85% RH;
3. Atmospheric pressure: 80kPa~106kPa
4. There is no strong vibration around

5. Power supply voltage:
5.1 Connect power supply 380V AC (± 10%), three-phase line+protective ground wire, grounding resistance ≤ 4 Ω; 6. Frequency: 50 ± 0.5Hz

7. Environmental air quality requirements: free from high concentration dust and flammable substances Explosive gases or dust, with no strong electromagnetic radiation sources nearby
8. Items containing flammable, explosive, volatile, or corrosive gases cannot be placed inside the box for testing or storage
9. Requirements for sample placement: The total volume of the sample should not exceed 2/5 of the box's capacity, and the placement area of each horizontal plane in the box should not exceed 2/5 of the cross-sectional area. Otherwise, it may seriously affect the performance of the test chamber or prevent it from working properly.

13. After sales service
1. Provide on-site equipment installation, new machine debugging, and training.
2. Complete machine warranty period: one year
3. A complete maintenance service team that provides prompt and professional maintenance services. (Reply within 2 hours for repair and dispatch service personnel within 24 hours.)

14. Equipment Execution and Acceptance Standards

Acceptance shall be carried out in accordance with the relevant national standards and the technical agreement confirmed by both parties.