Automotive Sensor Constant Temperature and Humidity Test Chamber

In the process of intelligent and automated development of automobiles, automotive sensors serve as key components for vehicles to perceive the external environment and their own state, and their performance stability directly affects driving safety and driving experience. From temperature and pressure sensors to rainfall and collision sensors, various sensors need to work accurately in complex and changing environments. The constant temperature and humidity test chamber, with its precise simulation ability of temperature and humidity environment, has become the core testing equipment in the research and development, production, and quality inspection of automotive sensors.

1Automotive Sensor Constant Temperature and Humidity Test ChamberMain technical indicators

Model: ADX-TH-150B

1. Inner box size: 500mm (W) × 600mm (H) × 500mm (D)

2. Outer box size: subject to actual size

3. Temperature range: -40 ℃ to 150 ℃

4. Humidity range: 20% to 98% RH (see temperature and humidity range diagram for details)

5. Temperature fluctuation: ≤± 0.5 ℃

6. Temperature deviation: ≤± 2 ℃

7. Humidity deviation: ± 2% RH (when humidity>75% RH); ± 3% RH (when humidity is ≤ 75% RH);

8. Heating time: within 60 minutes from 20 ℃∽+150 ℃; (Under no-load conditions)

9. Cooling time: within 60 minutes from 20 ℃ to -40 ℃; (Under no-load conditions)

10. This device cannot be used to test or store items containing flammable, explosive, or volatile or corrosive gases

Note: The above indicators were measured at room temperature of+25 ℃ without a sample

IIIAutomotive Sensor Constant Temperature and Humidity Test ChamberBox structure and materials:

1. Shell material: Steel plate with electrostatic spraying surface treatment.

2. Inner box material: SUS # 304 heat-resistant and cold resistant stainless steel plate.

3. Thermal insulation material: box: rigid polyurethane foam+glass fiber;

4. Standard configuration; One observation window (transparent electric heating film insulated glass), one 50mm cable hole (located on the left side of the box), two sets of sample racks, one lighting lamp, four casters, and one power cord (3 meters long)

4、 Freezing system and heating system:

1. Heater: Electric heating tube heater

2. Refrigerator unit:

(1) Freezing method: single-stage refrigeration method

(2) Compressor: French Taikang fully enclosed compressor,

(3) Refrigerant: R404A environmentally friendly refrigerant (DuPont, USA)

(4) Condenser: Wave shaped finned forced air condenser.

(5) Evaporator: Slope type FIN-TUBE evaporator.

(6) Cooling method: air-cooled.

5、 Humidification and dehumidification system:

1. Adopting an electronic parallel position micro humidification system, equipped with three imported magnetic spring switches, can reduce erroneous actions caused by electronic devices

2. The humidifier cylinder is made of stainless steel and comes with a water level observation window

3. Adopt evaporator coil dew point temperature (ADP) laminar contact dehumidification method

4. Equipped with a dual protection device for overheating and overflow, it can be used with peace of mind

5. The humidification/dehumidification system is independent

6. When supplying humidification cylinder water, pure water or RO reverse osmosis water should be used as much as possible

6、 Supply air circulation system:

1. Adopt a multi blade centrifugal circulating fan, reinforced with an axis and aluminum alloy rotating blades that are resistant to high and low temperatures, to achieve forced convection

2. FLOW THOW air supply method; Horizontal diffusion, vertical heat exchange, arc-shaped cycle

3. Adjustable side blowing air outlet and protective net return air outlet

7、 Controller: TH7010

1.7-inch high-definition color touch screen, with 65000 true colors and a resolution of 800 * 480. The core controller is PLC, which has a long service life, strong anti-interference ability, high control accuracy, fast data processing speed, and multiple signal combination relays (transistors) output. The signals can be logically processed (NOT, AND, OR, NOR, XOR)

2. 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

3. Interface type: Chinese/English can be freely selected and switched; Temperature and humidity control display and single temperature control display can be freely selected

4. The instrument is equipped with an alarm buzzer, which can freely set whether to delay the output when the alarm is triggered, how long to delay, whether to stop the machine, whether the buzzer will sound an alarm, whether the alarm interface will pop up, whether to output external alarm points, and other functions; In case of hardware failure at the input/output point, the backup function of moving the point; Water shortage prompt, automatic replenishment; Temperature and humidity operation upper and lower limit alarms, automatic alarms for overheating, overload, etc

5. 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

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

8、 Security protection system:

1. System control circuit fuse

2. Equipped with a non fuse protection switch

3. Overtemperature Water cut-off overheat protection switch

4. Overload protection device for refrigeration compressor

5. System overcurrent protection device

6. Fault indicator light

7. Controller setting error, fault display and warning

9、 Equipment usage conditions:

1. Environmental temperature: 5 ℃ -35 ℃;

2. Relative humidity: ≤ 85% RH;

3. Power supply voltage: 380V AC (± 10%), single-phase wire+protective ground wire, grounding resistance ≤ 4 Ω;

4. Frequency: 50 ± 0.5Hz

5. Power switch: Air switch (40A, prohibit the use of knife switches or power sockets);

6. Power: 15KW;

7. Humidification water; Electrical resistivity ≥ 500M Ω;

8. Requirements for ambient air quality; Does not contain high concentration dust and is flammable Explosive gases or dust, with no strong electromagnetic radiation sources nearby

10、 Meet the standards:

1. This equipment meets the testing standards of GB/T2423.1-2001 GB/T2423.2-2001 GB/T2423.3-1993 GB/T2423.4-1993 and the acceptance standards of GB/T5170-1996 GB/T5170-1996

2. This equipment is tested by our company's quality inspection center before leaving the factory, and an inspection report with a validity period of one year is issued