Automotive Electronics High and Low Temperature Laboratory

1Automotive Electronics High and Low Temperature LaboratoryProduct images

2、 Equipment name and model:

1. Equipment name: High and Low Temperature Laboratory

2. Equipment model: Model: ADX-DW-12B

IIIAutomotive Electronics High and Low Temperature LaboratoryBasic characteristics of the equipment:

1. The structural design of the experimental system should be reasonable, the manufacturing process should be standardized, and the appearance should be beautiful and generous.

2. The main functional components of the laboratory should adopt world-class configuration, reliable technical principles, and excellent control of noise and energy efficiency.

3. The matching and assembly of components are good, and the main functional components should be imported, which improves the safety and reliability of the equipment and ensures the long-term and high-frequency use requirements of users.

4. The equipment should have good operability, maintainability, good temperature stability and durability, good safety performance, no pollution to the environment, and no harm to personal health.

5. All wires inside the control cabinet should have special equipment printed serial numbers and numbers, and the wiring should be clear and easy to understand.

4、 Main technical indicators:

1. Internal dimensions: 3000mm * 2000mm * 2000mm (L * W * H) (length direction including 500mm of air conditioning cabinet)

2. External dimensions: 3700mm * 2200mm * 2250mm (L * W * H) (excluding freezer and buffer room dimensions)

3. Temperature range: -40 ℃ to 80 ℃

4. Temperature fluctuation: ± 0.5 ℃

5. Cooling rate: about 0.7-1 ℃/min (measured under no-load conditions)

6. Heating rate: about 3 ℃/min (measured under no-load conditions)

7. Temperature uniformity: within ± 3 ℃

8. Cooling method: air-cooled

9. Total installed capacity: 380V/30KW (excluding load)

10. Box material: Made of storage plate, with SUS304 # stainless steel on the inner wall and color steel plate on the outer wall

11. Insulation material: Hard flame-retardant polyurethane foam, thickness 100mm

12. Box door: Install one single door, and set a conductive film tempered glass anti condensation observation window on the single door.

13. Bottom plate: 100mm thick insulation board is used, and the height of the workshop bottom from the ground is about 50mm.

14. Add one ventilation fan with a power of 220V/80W and a maximum ventilation volume of 481m ³/H. The ventilation volume can be manually adjusted by a frequency converter to facilitate indoor air circulation control. When the ventilation fan is turned on, there will be fluctuations in temperature and humidity.

15. Add an oxygen concentration alarm device, which will sound an alarm and alert when the oxygen concentration is low.

16. Add one temperature buffer room with a single door to reduce temperature fluctuations caused by opening the door.

The technical data for the operation of the above equipment are all measured at room temperature of 20 ± 5 ℃, relative humidity ≤ 85% R.H. Under the non-linear condition of no load in the test chamber, the temperature and humidity remain constant for two hours. ）

5、 Air conditioning system:

1. Working principle: Forced ventilation and internal circulation, balanced temperature and humidity control: The central control system amplifies, converts, and non linearly corrects the temperature signal collected inside the box, compares it with the set temperature value (target value), and obtains a deviation signal through PID calculation. The output adjustment signal automatically controls the output power of the heater, so that the heating and heat dissipation in the laboratory reach a dynamic balance, ultimately achieving the goal of constant temperature

2. Air circulation device: Extended shaft centrifugal fan, long shaft external motor drive

3. Air heating method: using a dedicated spiral nickel chromium alloy resistive electric heater with a large heat dissipation area; PID+SSR drive control

4. Air cooling method: high-efficiency membrane air heat exchanger

6、 Refrigeration system

1. Exquisite low-temperature craftsmanship:

The low-temperature connecting pipeline adopts high-quality oxygen free copper pipes, nitrogen filled welding, and high pressure protection and leakage prevention processes to ensure welding quality; The length, inclination, slope, and direction of the pipeline must be strictly calculated to achieve excellent cooling effect

2. Main refrigeration components:

1) Refrigeration compressor: using original Bitzer compressor. This model of compressor should be able to achieve high cooling capacity, low noise, low energy consumption, and high efficiency. And it should be able to ensure long-term, stable, and reliable operation.

2) Refrigeration evaporator: The use of finned evaporators has a 30% higher heat transfer efficiency than general evaporators, and has advantages such as beauty, compactness, and fast cooling.

3) Oil separator and refrigeration oil

Whether the refrigeration compressor has sufficient and reasonable high-quality refrigeration oil will directly affect its service life. If the refrigeration oil enters the refrigeration system, especially into various heat exchangers, its performance will be greatly reduced. For this purpose, an oil separator needs to be installed in the system, using imported oil separators and refrigeration units, with stable oil performance and viscosity.

4) Efficient condensing evaporator

The heat exchanger is composed of several corrosion-resistant stainless steel sheets pressed into a human shaped ripple pattern. Adjacent pairs of stainless steel sheets have opposite ripple directions, and the ripple back lines intersect with each other to form a large number of contact welding points. Due to the complex contact intersection network channel, turbulent flow is formed on both sides of the fluid, which improves the heat transfer intensity. At the same time, strong turbulence and smooth stainless steel surface make the inner surface of the brazed plate heat exchange channel less prone to scaling. After using this heat exchanger, not only does the system resistance decrease, but it can also overcome the disadvantages of large size, poor heat transfer, and low efficiency of this component in previous domestic large-scale test chambers.

3. Main refrigeration accessories: solenoid valve (Carsten, Italy), manual shut-off valve (imported Danfoss), filter (imported Danfoss), expansion valve (imported Danfoss), pressure controller (imported Danfoss), vibration isolation hose (Palis, USA), muffler (Aigo, USA), electronic expansion valve (imported Danfoss), etc. are all imported equipment;

4. Refrigerant: R404A/R23 meets the requirements of international environmental conventions.

7、 Box structure:

1. In order to facilitate the entry and exit of test samples into the laboratory, the high and low temperature laboratory adopts a floor standing box structure: the refrigeration unit cabinet is located outside the laboratory. Due to the long appearance of the laboratory, the electrical control part can be placed in front of the laboratory near the door, and the operation panel is located on the front of the electrical control cabinet. The outer shell of the box is made of storage plate, and the inner wall is made of SUS304 # stainless steel. The insulation material is made of hard flame-retardant polyurethane foam

2. Refrigeration unit cabinet: placed outside the working room, and the refrigeration compressor unit is centrally installed on the unit rack inside.

3. Box door: single door structure is adopted. The door of the laboratory is sealed with silicone rubber strip, which is resistant to high and low temperatures, aging and has good sealing performance.

4. Observation window of the box: In order to facilitate the observation of the condition of the test samples inside the box, the material of the observation window is hollow resistance film heating anti frost glass composed of multiple layers of tempered glass.

5. Lighting fixtures: There are four 40W/220V moisture-proof and explosion-proof lighting fixtures installed in the laboratory, which can be manually controlled by direct switching, avoiding the sample area in the middle of the box.

8、 Measurement and Control System:

A 1.7-inch high-definition color touch screen with 65000 true colors and a resolution of 800 * 480. The core controller is a PLC, which has a long service life, strong anti-interference ability, and high control accuracy

2. Temperature and humidity 2-channel input, independently controlled, capable of 10 point linear slope compensation for each temperature and humidity of nonlinear sensors; There are two control modes for each channel: fixed value/program fixed value. The maximum time can be set to 9999999 hours; Program editing and looping, the program can be programmed with 100 groups, each group consisting of 100 segments, supporting free combination programming and output that can be controlled in series or parallel with high difficulty

3. Equipped with Chinese character input function, fault alarm name, test name, data group name, etc

4. Communication function: The instrument is equipped with a USB interface, which supports USB storage, exporting historical curves, and data functions, and can be viewed and printed using computer software

5. Interface type: Chinese/English can be freely selected and switched;

6. Compressor delay function; Manual, automatic, and timed shutdown functions; Appointment activation function

7. The instrument is equipped with an alarm buzzer, which can freely set whether to delay the output when the alarm is triggered, how long the delay is, whether to stop the machine, whether the buzzer will alarm, whether the alarm interface will pop up, whether the temperature and humidity operation upper and lower limits alarm, over temperature, overload and other automatic alarms

8. The controller can display the current operating status in real time, such as set values, real-time values, running time, number of groups and segments, number of cycles, and other main process parameters, as well as statistical data; Various control parameters can be set arbitrarily

9. Real time display of temperature and humidity PV/SP curves; And it can also query historical curves

10. System operation mode: fixed value operation mode and program operation mode.

9、 Safety protection and electromagnetic compatibility requirements:

1. This test box should meet the national electrical safety standards, wiring specifications, and have clear labeling for each wiring port, without any exposure

2. The studio is absolutely insulated from all power sources, with a resistance greater than 1M Ω and no accumulation of static electricity

3. * Security protection function (as follows)

1) Reliable grounding protection device;

2) Leakage/circuit breaker protection;

3) Heater short circuit protection;

4) Overload protection for blower motor;

5) Studio overheating sound and light alarm;

6) Compressor overpressure protection;

7) Compressor overload protection;

10、 Equipment usage conditions:

1. Voltage: three-phase 380V ± 10% 60/50 ± 10Hz; three-phase four wire+grounding wire; Equipment usage power: approximately 30KW

2. Environmental temperature: 25 ℃± 5 ℃;

3. Environmental humidity:<85% R.H (25 ℃);

4. Atmospheric pressure: 86-106Kpa;

5. Environmental conditions: There is no strong vibration, strong electromagnetic field interference, high concentration dust and corrosive substances, direct sunlight or other heat sources directly radiating around the equipment site.

6. The equipment should be placed horizontally in a well ventilated laboratory, with sufficient space around for operation and maintenance.

11、 Equipped with technical data and attachments:

1. Technical data: equipment qualification certificate, equipment maintenance manual, electrical schematic diagram, warranty card, instrument user manual.

2. Communication software CD for upper computer, etc.