Programmable intelligent high-temperature constant temperature test chamber for high and low temperature cycling test

Structural characteristics of high and low temperature test chamber:

1.The box body of the aerospace high and low temperature test chamber is processed and formed by CNC machine tools, with a beautiful and elegant appearance, and adopts non reactive handles for easy operation.

2.The inner box adopts imported stainless steel (SUS304) mirror panel, and the outer box adopts (SUS304) brushed stainless steel plate or cold-rolled steel plate spray painted, which increases the appearance texture and cleanliness.

3.Equipped with a large observation window and lighting fixtures to keep the box bright, and using tempered glass embedded in the heating body, the condition inside the box can be observed clearly at any time.

4.The left side of the box is equipped with a test hole with a diameter of 25mm, 50mm, or 100mm, which can be used for external testing power or signal lines.

5.The insulation material adopts high-density glass fiber cotton with a thickness of 80mm. A double-layer high tensile sealing strip with high and low temperature resistance is used between the door and the box to ensure the sealing of the testing area.

6.Equipped with an independent temperature limit alarm system, exceeding the limit temperature and automatically interrupting operation ensures that the test is conducted without any accidents.

7.Separating the humidification system pipeline from the control circuit board can prevent malfunctions caused by water leakage in the humidification pipeline.

8.The waterway system pipeline circuit system adopts a door opening, which is convenient for maintenance and inspection.

4、 Controller:

1. The controller adopts a fully imported LED digital display button screen and an imported brand seven color screen digital touch button temperature and humidity controller. Temperature and humidity control can be directly displayed, eliminating the shortcomings of the original temperature and humidity comparison.

2.After inputting the data and experimental conditions, the controller has a locking function to prevent human touch from changing the temperature value.

3.The controller has the function of P.I.D automatic calculation, which can immediately correct the temperature and humidity change conditions, making temperature and humidity control more stable.

4.Optional printer. Capable of printing record settings parameters and scanning temperature and humidity change curves. 4-20mA standard signal.

5、 Operation control system for high and low temperature test chamber:

（1） Heating system:

1.Adopting finned heat dissipation tube shaped nickel chromium alloy stainless steel electric heater, it heats up quickly and has a long service life.

（2） Wind circulation system:

1.Adopting a multi wing centrifugal fan for air circulation, avoiding any dead corners, can make the temperature and humidity distribution in the testing area uniform.

2.The design of air circulation for air outlet and return ensures that the wind pressure and speed meet the testing standards, and can quickly stabilize the temperature and humidity at the moment of opening the door.

3.Adopting adjustable air deflectors that can be adjusted up, down, left, and right to ensure even distribution of temperature and humidity.

（3） Humidification system:

1.Humidification: Fully independent system, external isolated all stainless steel shallow surface evaporative humidifier, forms wet vapor humidification through heating, and detects humidity through a probe.

2.Water supply: Hidden water tank for water supply, small water pump automatically draws water to the humidification tank, and can recycle residual water Water conservation and consumption reduction.

The fully independent heating and humidification system can improve efficiency, reduce testing costs, extend lifespan, and lower failure rates.

6、 Compliant with standards:

The performance indicators of the high and low temperature test chamber comply with the requirements of GB5170, 2, 3, 5, 6-95 "Basic Parameter Calibration Methods for Environmental Testing Equipment of Electrical and Electronic Products - Low Temperature, High Temperature, Constant Damp Heat, and Alternating Damp Heat Test Equipment"

Basic Environmental Testing Procedures for Electrical and Electronic Products - Test B: High Temperature Test Method GB 2423.2-89 (IEC68-2-2)

Basic Environmental Testing Procedures for Electrical and Electronic Products - Test Ca: Constant Damp Heat Test Method GB/T 2423.3-93 (IEC68-2-3) High and Low Temperature Test Chamber, used to test the heat resistance, cold resistance, dry resistance, and moisture resistance of various materials. The Aerospace Zhida High and Low Temperature Damp Heat Test Chamber is suitable for testing the quality of electronic, electrical, communication, instrument, vehicle, plastic products, metal, food, chemical, building materials, medical, aerospace and other products. The high and low temperature damp heat test chamber is used to simulate the operation of test products in high and low temperature damp heat environments, in order to evaluate the working quality of the product. Control the output of the heater through PID automatic calculation based on the set temperature point, ultimately achieving a dynamic balance

1、 Technical indicators of high and low temperature test chamber:
1. Temperature range: -20 ℃~150 ℃, -40 ℃~150 ℃, -60 ℃~150 ℃, -70 ℃~150 ℃
2. Temperature uniformity: ≤± 2 ℃ (when unloaded)
3. Temperature fluctuation: ± 0.5 ℃ (when unloaded)
4. Temperature deviation: ≤± 2 ℃
5. Cooling rate: 1.0-1.2 ℃/min
6. Heating rate: 2.0-3.0 ℃/min
2、 Standard model and size of high and low temperature test chamber equipment (can also be produced according to customer requirements) (unit: mm):
Model Y-HE-100G Internal dimensions: W × H × D 400 × 500 × 500 External dimensions: 600 × 1400 × 1100
Model Y-HE-150G Internal dimensions: W × H × D 500 × 600 × 500 External dimensions: 700 × 1500 × 1100
Model Y-HE-225G Internal dimensions: W × H × D 500 × 750 × 600 External dimensions: 700 × 1650 × 1200
Model Y-HE-408G Internal dimensions: W × H × D 600 × 850 × 800 External dimensions: 800 × 1750 × 1400
Model Y-HE-800G Internal dimensions: W × H × D 1000 × 1000 × 800 External dimensions: 1200 × 1900 × 1400
Model Y-HE-1000G Internal dimensions: W × H × D 1000 × 1000 × 1000 External dimensions: 1200 × 1900 × 1600
3、 Introduction to the structure of high and low temperature test chamber:
1. The outer shell is processed and formed using (t=1mm) A3 steel plate CNC machine tools, and the surface of the shell is sprayed with plastic for a smoother and more aesthetically pleasing appearance.
2. The inner liner adopts imported stainless steel (SUS304) mirror panel.
3. Insulation material: high-density glass fiber cotton The insulation thickness is 100mm
4. Temperature and humidity circulation system: using a specially designed low-noise long axis fan motor with high and low temperature resistant stainless steel multi blade impellers to achieve strong convection and vertical diffusion circulation.
5. Double layer high tensile sealing strips with high temperature resistance are used between the door and the box to ensure the sealing of the testing area
4、 Control of refrigeration system for high and low temperature test chamber
1. Compressor: Fully enclosed French Taikang 1.5HP × 2 × 1 set
2. Refrigeration method: cascade refrigeration
3. Condensation method: forced air cooling
4. Refrigerant: R404A, R23 (environmentally friendly)
5. All system pipelines undergo a 48 hour leak detection test with ventilation and pressurization
6. The heating and cooling systems are completely independent
7. Internal spiral refrigerant copper tube

5、 Execution standards for high and low temperature test chambers
GB10592-93 Technical Conditions for High and Low Temperature Test Chamber
GB2423.1-2001 Test A Low temperature Test Method
GB2423.2-2001 Test B High temperature test method
6、 Operation control system for high and low temperature test chamber:
1. Controller: Imported microcomputer temperature and humidity integrated controller
2. Accuracy range: Set accuracy: temperature ± 0.1 ℃, humidity ± 1% R.H, indication accuracy: temperature ± 0.1 ℃, humidity ± 1% R.H
3. Temperature and humidity sensor: Platinum resistance PT100 Ω/mV
4. Heating system: fully independent system, nickel chromium alloy electric heating heater
5. Humidification system: External isolated, all stainless steel shallow surface evaporative humidifier
6. Dehumidification system: using evaporator coil dew point temperature laminar contact dehumidification method. Water supply system: humidification water supply adopts automatic control And it can recycle residual water Water conservation and consumption reduction
7. Refrigeration system: fully enclosed air-cooled single unit compression refrigeration method, original French "Taikang", fully enclosed air-cooled cascade compression refrigeration method
8. Circulating system: High temperature resistant and low-noise air conditioning motor Multi blade centrifugal wind turbine
9. Protection function: The low-temperature constant temperature test chamber has the functions of leakage, short circuit, overheating, water shortage, motor overheating, overcurrent protection/controller power-off memory

7、 Materials used for high and low temperature test chambers:
1. Outer box material: carbon steel plate Phosphating electrostatic spraying treatment SUS304 stainless steel matte surface line hairline treatment
2. Inner box material: SUS304 stainless steel mirror light plate
3. Insulation material: Polyurethane hard foam, ultra-fine glass fiber cotton
4. Door frame insulation: double-layer high-temperature aging resistant silicone rubber door sealing strip
5. Standard configuration: 1 set of illuminated glass windows, 2 test racks, and 1 test lead hole (25, 50, 100mm)
8、 The manufacturer of the high and low temperature test chamber meets the following standards:
Compliant with standards such as GB/T2423.1-2001, GB/T2423.2-2001, GB/T2423.3-1993, etc
Free home delivery and installation and debugging instructions (until the customer's employees operate independently and are satisfied)

Nine After sales service and warranty for high and low temperature test chamber products
9-1. The guarantee letter provides a 2-year warranty
9-2 New machine factory temperature nine point distribution verification
9-3 maintenance backup spare parts inventory of more than eight years
Ten New Jida Jiaoyou Factory Attached Information
10-1. Operation manual, maintenance manual
10-2. Guarantee certificate and maintenance record card
10-3. Personnel operation and usage training

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