High and low temperature alternating heat and humidity test chamber

Product application range

With the rapid development of modern industrial technology, the application fields of electricians and electronic products are becoming more and more extensive, and the environmental conditions experienced are becoming more and more complicated. Only by properly stipulating the environmental conditions of the product and correctly selecting the environmental protection measures of the product can the product be protected from damage during storage and transportation, and safe and reliable during use. Therefore, the artificial simulation of environmental testing of electricians and electronic products is an essential part of ensuring the high quality. The artificial simulation environmental test is a scientific summary of the actual environmental impact, which is characterized by typicalization, standardization, convenient use and easy comparison. The diversification of environmental conditions and the importance of environmental testing also place stricter requirements on environmental testing equipment.

The high and low temperature wet heat alternating test chamber is suitable for the adaptability test of electrician, electronics, instrumentation and other products, parts and materials in storage, transportation and use under high and low temperature alternating heat and humidity environment; it is all kinds of electronics, electricians, Electrical equipment, plastics and other raw materials and devices for cold resistance, heat resistance, moisture resistance, dry resistance test and quality control equipment reliability test equipment; especially suitable for optical fiber, LCD , crystal, inductor, PCB , battery, computer, mobile phone and other products High temperature, low temperature and humidity resistant cycle test.

Product use restrictions

This test equipment prohibits the testing of media in the following situations:

1.       Testing and storage of samples of flammable, explosive and volatile substances

2.       Testing and storage of corrosive substances

3.       Testing or storage of biological samples

4.       Test and storage of strong electromagnetic emission source samples

Equipment performance parameters

1.       model:    GDJS-100

2.       Nominal internal volume:    100 liters

3.       Temperature adjustment range:    - 60 °C ~ + 150 °C

4.       Humidity adjustment range:    30% to 98% RH    

5.       Temperature uniformity:      ≤± 2 °C  

6.       Humidity uniformity:      +2%-3% RH

7.       Temperature fluctuations:      ± 0.5 °C

8.       Humidity fluctuation:      ± 2%

9.       Temperature deviation:        ≤ 2 °C

10.   Humidity deviation:        ≤ +2%   -3% RH

11.   Heating rate:        From normal temperature to zui high temperature 2 °C ~ 3 °C / 1 minute

12.   Cooling rate:        From normal temperature to zoi low temperature 0.7 °C ~ 1 °C / 1 minute

13.   Time setting range:    0 to 9999 hours

14.   Total power:          6.5kW

Mechanical sheet metal structure

1.       Outer wall: It is processed by CNC machine tool, and the arc shape is beautiful and elegant. A3 steel plate is electrostatically sprayed.

2.       Inner wall: CNC machine tool forming, SUS304 stainless steel mirror panel

3.       Insulation insulation material: using tight mineral wool to isolate the test chamber casing and test chamber test space, achieving low heat loss

4.       Anti-sweat treatment on the outer wall: using a silicone heating wire to generate a constant heat source to avoid condensation

5.       A transparent window ( 220 × 320mm ) is set at a reasonable position of the door to observe the change of the indoor sample ( with the light keeping the box bright) , the observation window is made of multi-layer hollow tempered glass , and the inner glued sheet conductive film is produced. Constant heat source), with transparent, heat-insulating, explosion-proof, and less prone to steam frosting

6.       The low-noise, multi-blade centrifugal fan provides powerful air circulation to avoid any dead angle and evenly distribute the temperature and humidity in the test area. Wind and air circulation design, wind pressure and wind speed are in line with the test standard, and the temperature and humidity can be stabilized quickly when the door is opened.

7.       Test door and the body of high tensile silicone seal the high temperature resistance of the double layer, to ensure a closed test zone

8.       Configuring a test holes (machine left 50 mm) can be an external test power line or signal line

9.       The refrigeration system of the equipment is installed under the working chamber, and the compressor adopts the French import “Taikang” brand.

10.   The high-quality fixed PU movable wheel is installed on the bottom of the instrument, which can easily move the instrument to the specified position. Fix the instrument after the Zui

11.   The control part of the equipment is designed on the right side of the equipment, distributed with temperature controller, control switch, water tank, etc. It is easy to operate, simple and easy to maintain.

12.   Test box bottom bearing capacity: 200kg/m ² ( uniform load )

13.   The test space is equipped with two sample racks and support shelves, suitable for inserting into the sample holder, and the height of the sample holder can be adjusted. Each sample holder has a bearing capacity of 25kg.

Heating system

1.       Heating with far-infrared nickel-chromium alloy high-speed heating electric heating wire

2.       Heater control mode: non-contact periodic pulse width adjustment, SSR (solid state relay)

3.       The output power is calculated by microcomputer to achieve high precision and high efficiency.

4.       The heating rate is calculated according to the heat content load of the customer's test object.

Humidification and dehumidification system

1.       Parallel mode micro-motion humidification system

2.       External boiler steam type, humidification barrel made of stainless steel

3.       With double protection device for overheating and overflow

4.       Water level control uses mechanical float ball to prevent electronic malfunction

5.       Control output power is calculated by microcomputer to achieve high precision and high efficiency

6.       The humidification system pipeline is separated from the control circuit board circuit to avoid leakage of water from the humidification pipeline and improve safety.

7.       (Optional) The wet water can be used with the automatic water supply system with the filter. The buyer does not need to add water manually.

8.       Evaporative vessel tube dew point temperature ( ADP ) laminar flow contact dehumidification

9.       Single-unit dehumidification with a small cooling bypass, dual-cooling with a small refrigerant bypass of a compressor for dehumidification

Cooling System

1.       Refrigerator: Fully enclosed high efficiency power-saving air-cooled mechanical compressor (Tai Kang, France)

2.       Cooling method: binary cascade cooling

3.       Finned evaporator (also as a dehumidifier)

4.       Inner spiral refrigerant copper tube

5.       Brazed plate heat exchanger                         

6.       All system pipelines are used for ventilation and pressure 72H leak test        

7.       Compressor return air cooling circuit

8.       Energy regulation loop

9.       R404A/ R23 (environmental refrigerant)                     

10.   Start R404A and R23 when cooling down, and only start R404A when dehumidifying (energy saving)

11.   The main components are all international quality brand products.

Electrical control system

1.       The control instrument adopts imported ( 5.7 -inch LCD monitor), the screen operation is simple, the program editing is easy, no key input is required, and the screen direct touch option

2.       Accuracy: 0.1 °C ( display range )

3.       Resolution: ± 0.1 °C

4.       Temperature sensor: PT100 platinum resistance temperature measuring body

5.       Control method: heat balance temperature adjustment method

6.       Fault display and automatic shutdown protection

7.       L, slope control can be used for cooling, and has a function of self-correction of the temperature of the reference point

8.       The PLC ( Programmable Logic Controller ) of the control system automatically adjusts the operating conditions of the chiller, heating, and humidification according to the test conditions (up to the high power saving efficiency of the Zui)

9.       The fixed condition can be set to 0 - 9999 H , and the fixed or alternating conditions can be set arbitrarily.

10.   The controller interface provided in English to choose, in real time display the operation screen graph having a program group 120, each segment 100, each step may be the capacity of 999 cycles, each time setting a large value of 99 hours, 59 zui Points (the test program can also be stored by trial name for later recall)

11.   After the data and test conditions are entered, the controller has a screen lock function to avoid human touch and stop

12.   With RS-232 communication function (remote control), communication program and random software can be used to design programs on the computer, monitor the test process and perform automatic power on/off, print curve, data and other functions.

13.   Temperature and humidity control using P.I.D + SSR system coordinated control

14.   With automatic calculation function, the temperature and humidity change conditions can be corrected immediately, making the temperature and humidity control more precise and stable.

15.   The controller has a screen automatic screen saver function to better protect the LCD screen during long-term operation (to make it last longer)

16.   PC compatible machine, P II or above CPU , 128M or more memory, Simplified Chinese Windows2000 or Simplified Chinese WindowsXP operating system

17.   The main electrical components are French "Schneider", Japan "Fuji", and other brands

Protection System

1.       Over temperature

2.       Compressor overpressure

3.       Compressor overload

4.       Compressor overcurrent

5.       Leakage

6.       Water shortage

7.       Power supply phase / reverse phase

8.       Automatic shutdown with failure and display of fault content

Environmental conditions

1.       The floor is flat, well ventilated, free of flammable, explosive, corrosive gases and dust

2.       No strong electromagnetic radiation source nearby

3.       Drainage floor drain near the equipment (within 2 meters from the refrigeration unit)

4.       Ground bearing capacity of the site: not less than 800kg/m ²

5.       Appropriate maintenance space around the equipment

6.       Temperature: 5 °C ~ 30 °C

7.       Relative humidity: ≤ 85% RH

8.       Air pressure: 86 ~ 106kpa

9.       AC380V    Three-phase four-wire + protective ground

10.   Voltage allowable fluctuation range: 380V × 3W ± 10%

11.   Frequency allowable fluctuation range: 50Hz ± 1%

12.   Protective earthing wire grounding resistance is less than 4 Ω; TN-S mode power supply or TT mode power supply

13.   The user is required to configure the air or power switch of the corresponding capacity at the installation site, and this switch must be used exclusively for the device.

14.   When the equipment is not working, the ambient temperature should be kept within +0 to 45 °C. When the ambient temperature is lower than 0 °C, the water remaining in the equipment should be drained clean.

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