Main advantages of the product:

1. Product environmental protection and energy-saving technology advantages

Utilize a multi-channel, environmentally friendly and energy-saving (low-noise) mechanical compression refrigeration system.

All materials, parts, components, raw materials, etc. of the device, whether domestically produced or imported, are made of environmentally friendly products; Based on the characteristics of mechanical compression refrigeration, a two-stage multi-channel main and bypass system is adopted. The multi-channel main and bypass can be adaptively selected and activated according to different working conditions. The entire control is automatically implemented by an intelligent control system according to the working conditions, changing the traditional way of using a temperature controller to control the heater to offset the cooling capacity to control the cooling capacity. So as to achieve energy-saving effect, not only does the energy consumption account for only 80% of similar products. It also reduces the operating load of the refrigeration compressor, reduces equipment vibration and noise, and improves control accuracy. To achieve better energy-saving effects, frequency conversion technology is adopted to adapt the refrigeration output of the refrigeration compressor to various temperature change rate requirements in the laboratory, while controlling the power loss during use to achieve energy-saving effects. Use sound-absorbing and silencing methods in different parts of the entire structure and mechanical working process to reduce the overall noise of the equipment.

2. Independently developed multi-channel and multi-stage throttling system (refrigeration system)

The refrigeration system of this equipment is designed with different capillary main paths and bypass paths according to different operating conditions. The capillary throttling system is automatically controlled and adjusted by the intelligent communication control system based on the operating conditions to ensure that the flow rate can be adjusted, achieving the purpose of temperature change. Moreover, the temperature field changes uniformly and the temperature fluctuation is minimal.

3. Apply a broadband compression balance temperature control system to achieve rapid temperature control through a fast convergence PID adaptive algorithm.

By using a temperature mixing chamber, a static pressure chamber, and a forced air duct system with centrifugal blades, sufficient exchange of cold and heat is ensured, and air is evenly supplied through the top orifice plate to each space in the working room (experimental area) to achieve temperature uniformity; To achieve rapid temperature convergence, our company has collaborated with Sanyuan Corporation in South Korea to develop a dedicated PID adaptive algorithm suitable for our company. This control method continuously adjusts the control according to the temperature situation during the control process, achieving the control objectives of fast sword retraction, small temperature overshoot, and High stability.

4. Implement remote visual control.

The device is equipped with a human-machine management interface and a touch mode automation control system to achieve automatic control; Simultaneously, connect to remote computers through RS485 communication interface to achieve network management and remote monitoring. The entire system is controlled and managed through a graphical interface, which is simple and fast, with automatic fault prompts. The graphical prompts are energy-saving and provide solutions to guide users in quickly troubleshooting.

5. Reasonable structural design

Main functions of the device:

The main purpose of using the three comprehensive test box equipment is to provide multiple laboratory simulation environmental conditions required for model matching products, including an alternating temperature and humidity environment with a temperature range of -70 ° C to 150 ° C and humidity of 20% to 98%, as well as mechanical environments such as sine vibration, random vibration, sine string+random, random+random, and impact. These three environments are combined to form a comprehensive laboratory simulation environment for routine testing, stress screening testing, preliminary testing of newly developed products, and reliability testing of standardized (identified) products, providing data and guarantees for the reliability of products. Request the functionality of the device:

a) Provide environmental conditions of high temperature, low temperature, humidity, and vibration individually or in combination with each other:

b) Capable of setting high temperature, low temperature, humidity, vibration values, and program settings;

c) It should have low-temperature dehumidification function, provide dry air blowing ability, and have the ability to conduct temperature humidity vibration combination or cyclic alternating tests that meet the local requirements of GJB150.24A;

d) The air duct structure inside the box should form a uniform airflow field to the maximum extent possible, so that the temperature and humidity on the surface of the specimen are uniform, and meet the indoor wind speed requirements for climate chamber Environmental testing specified in GJB150A;

e) Capable of stable control of temperature change rate.

f) Capable of recording and retrospectively checking parameters such as temperature, humidity, vibration operation time, and fault information, displaying faults, and prompting troubleshooting steps.

g) It should have control and display functions for multi-channel temperature sensors and vibration sensors, and be able to record and output information separately;

After the assembly of the three comprehensive equipment, each system should have data communication interfaces (serial and network ports) that can be connected to the laboratory data network for remote monitoring.

Performance indicators and system composition of temperature and humidity vibration comprehensive testing machine

Sample restrictions: This testing equipment prohibits the testing of flammable, explosive, and volatile substance samples; Testing for storing samples of corrosive substances, testing for storing organisms, testing and storing samples of strong electromagnetic emission sources

Volume, weight, and size

Product model GC-SZH-2156G

Test box volume three comprehensive test box volume 2.156m³

The effective size of the inner box is 1400 × 1100 × 1500 (mm) W × H × D

(Note: The size of the vibration table is 1000 × 1000mm)

Exterior space (mm) W × H × D (including lifting frame)

Weight 6800kg

Work noise ≤ 75db measured at a distance of 1 meter in front of the machine and 1.2 meters above the ground

Power, current, and power supply

The maximum power is about 95KW

The maximum current is about 213A

Power supply conditions and sources

AC380V three-phase four wire+protective grounding; The allowable voltage fluctuation range is ± 10% V;

The allowable frequency fluctuation range is 50 ± 0.5HZ; TN-S power supply or TT power supply

The grounding resistance of the protective grounding wire is less than 4 Ω

Require users to configure corresponding capacity air or power switches for the equipment at the installation site, and this switch must be independently controlled. When placing the powered sample in the box of this equipment, please use an external power source for the sample power supply, and do not directly use the local power supply;

performance index 

Performance parameters of temperature and humidity test chamber

Temperature and humidity range Temperature range:- 70～150℃

Humidity range: 20-98% RH (as shown in the figure)

Control accuracy temperature resolution: 0.01 ℃

Temperature deviation: ±2℃；   

Temperature uniformity: ≤ 3.0℃

Temperature fluctuation: ± 0.5 ℃

Humidity control accuracy humidity resolution: 0.1% RH

Humidity deviation:> ± 3.0% RH at 75% RH; ≤ ± 5.0% RH at 75% RH

Humidity uniformity: ≤ 3%RH

Humidity fluctuation: ± 2% RH

Heating rate -40 ℃~+80 ℃ ≥ 15 ℃/min Linear 10 ℃/min

Cooling rate+80 ℃~-40 ℃ ≥ 15 ℃/min Linear 10 ℃/min

Note: 1. The above performance parameters are measured at a cooling water temperature of 25 ℃ without a sample;

Execution standards and testing meet condition 1 GB2423.1-2008/IEC6008-2-1-2007 Environmental testing for electrical and electronic products Part 2: Test methods Test A: Low temperature

2. GB/T 2423.2-2008 Environmental testing for electrical and electronic products - Part 2: Test methods - Test B: High temperature

3. GJB150.3A-2009 High temperature test method

4. GJB150.4A-2009 Low temperature test method

5. GB2423.22-2008 Environmental testing for electrical and electronic products Part 2 Test methods Test Nb: Temperature change at a specified rate

6. GBT 2424.5-2006 Environmental Testing Temperature Test Chamber Performance Confirmation for Electrical and Electronic Products

7. GB/T 10589-2008 Technical Conditions for Low Temperature Test Chamber

8. GB/T2423.3-2008 (IEC68-2-3) Test Ca: Constant Damp Heat Test Method

9. GBB150.9A-2009 Damp Heat Test Method

10. G/BT 2423.4-2008/IEC6008-2-30:2005 Test Db: Alternating Damp Heat Method

11. GB/T5170.18-2005 Basic parameter calibration method for environmental testing equipment for electrical and electronic products Temperature/humidity combined cycle testing equipment

12. GB/T10586-2006 Technical Conditions for Damp Heat Test Chamber

13. GBT 2424.6-2006 Environmental Testing for Electrical and Electronic Products - Temperature and Humidity Test Chamber Performance Confirmation

14. GBT 2424.7-2006 Environmental testing for electrical and electronic products - Measurement of temperature test chambers A and B (with load)

15. GB-T2423.35-2005 Low temperature sinusoidal vibration test method

16. GB-T2423.36-2005 High temperature sinusoidal vibration test

17. GBT5170.13-2005 Inspection Method for Vibration (Sinusoidal) Mechanical Vibration Test Equipment

18. GBT2423.34-2005 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - ZAD Temperature Humidity Combined Cycle Test

structure characteristics

Machine structure temperature and humidity box material: SUS304 # stainless steel 2.0mm thick

Temperature and humidity box outer box material: cold-rolled steel plate 1.5mm thick baked paint treatment, baked paint color is gray white, according to the customer's color chart

Temperature and humidity box insulation material: polyurethane foam adhesive+glass fiber cotton 100mm thick

The control box and test box are integrated, with front and rear structures

The temperature and Humidity Chamber and vibration test chamber have an upper and lower structure

The vibration table is located inside the test chamber

The vibration testing machine and temperature and humidity testing machine are combined, detachable, and can be used separately

The air conditioning channel is equipped with an air chamber, a circulating air duct and a stainless steel circulating fan. Through the top back leaf window and a diffuser, the air is blown out evenly from the top, and the temperature and humidity in the mixing room are distributed to the test space, so as to achieve the goal of evenly controlling the temperature and humidity

Test box door layout

a) It is divided into 4 boxes, which can be used independently or combined.

b) The No.1 box is located on the leftmost side, with a movable door on the right side and a double door on the front. There are three doors at the bottom, which are respectively used in conjunction with the vertical and horizontal platforms of the vibration table. There is also a blind plate used separately, for a total of six door panels.

c) The second box is located on the right side of the first box, and both sides of the second box are removable doors. The front is a double door, and there are three doors at the bottom that match the vertical and horizontal platforms of the vibration table. There is also a blind plate used separately, for a total of seven door panels.

d) The third box is located on the right side of the second box, and both sides of the third box are removable doors. The front is a double door, and there are three doors at the bottom that match the vertical and horizontal platforms of the vibration table. There is also a blind plate used separately, for a total of seven door panels.

e) The No. 4 box is located on the far right side, with a movable door on the left side and a double door on the front. There are three doors at the bottom, which are respectively used in conjunction with the vertical and horizontal platforms of the vibration table. There is also a blind plate used separately, for a total of six door panels.

f) Double hinged doors, the hinges should be sturdy and durable, and long-term use should not easily cause them to fall. The hinges are located on the left and right sides of the test box. The front box door opens from the middle to both sides, and the left and right doors can be opened,

g) Two silicone rubber sealing strips and an electric heating (automatic adjustment) anti condensation device for the door frame;

h) There is an observation window with a size of 600 × 800mm (width × height), anti frost and anti condensation insulated glass observation window on the door of the test chamber;

i) There is a lighting lamp on the door.

Observation windows 1 and 3: There are 2 (including side single doors) conductive film explosion-proof and anti fog tempered glass observation windows with dimensions of W600 * H800mm on the door; Simultaneously equipped with conductive film explosion-proof, anti fog, and anti frost tempered glass observation windows, specially customized

Each box is reserved with test holes for lead wire testing, and each box is equipped with test holes and O-rings; 150mm*4，& oslash; 50mm*2；  (with hole cover and hole plug)

There are a total of 6 explosion-proof lamps on the top of the box, which are resistant to high, low, and humid environments, ensuring that the brightness of the box can be observed at all times to monitor the product situation inside the box. The total lighting power inside the box is not less than 800W.

The condensate outlet has outlet holes for studio condensate and unit condensate to facilitate the outflow of condensate;

The pressure balance device test chamber should be equipped with a pressure balance device to balance indoor pressure fluctuations caused by vibration

The bottom plate of the activity bottom plate test box is made into a removable structure, and the equipment is equipped with 3 sets of activity bottom plates, including one set for use with a horizontal vibration table, one set for use with a vertical table, and one set for blind hole plates, which are used separately for the equipment

Control panel imported from South Korea TEMI2700 LCD touch programmable controller, emergency stop button switch, adjustable over temperature protector, lighting switch, main power switch, RS-232 communication interface

Mechanical room refrigeration unit, exhaust fan, drainage device, adjustable back blade window, steam outlet

Distribution panel main power circuit breaker, controller, distribution board, cooling fan, over temperature protector

a distribution board

Each box of the electrical control cabinet is equipped with a separate controller, and when linked, master-slave control can be customized;

The electrical control cabinet is integrated and can be moved within a specific range according to experimental requirements.

Electric control system

Imported controller, which controls temperature and humidity separately

SAMWON from South Korea, LCD touch screen controller TEMI2700

Reasonable, scientific and tidy electrical distribution panel

The heating system uses nickel alloy heating tubes P I. D controls heating to achieve temperature equilibrium

The heater is made of exposed spiral nickel chromium heating wire and insulated ceramic bracket, with low surface load, sensitive temperature control, and small temperature hysteresis.

Heater control mode: PID+PWM+ SSR， Solid state relays are used for contactless zero crossing triggering to drive heaters, with no contact sparks or noise, and a long service life.

Humidification and dehumidification system A adopts external humidification method, where the compressor starts dehumidification and the P.I.D controls the humidification amount to achieve the required humidity

B equipment reserves a dry air blowing inlet, and customers can connect dry air dehumidification themselves

Imported nickel chromium alloy electric heater, boiler humidification method

Screen display

Function temperature and humidity setting (SV) actual (PV) value displayed directly

Can display the execution program number, segment number, remaining time and number of cycles, and display the running time

Program editing and graphical curve display

With a separate program editing screen, each page can input 4 segments of temperature, humidity, and time

Fixed point or program action status display

Language conversion can switch between Chinese/English

7-inch true color display screen

The maximum number of programs that can be used for program capacity and control functions is 120 groups, and one program can be combined from 1 to 99 segments; Available memory capacity: 1200 segments, can execute commands repeatedly: each command can be executed up to 999 times; The slope setting of the program can be set by the timeline; Programs can be linked for use; The production of the program adopts a conversational style with simple operation; It has functions such as editing, clearing, inserting, etc

Two sets of time signal output control (controllable on/off action of the test object); Has 9 sets of PID parameter settings; During program execution, it has the function of skipping files and maintaining them; Equipped with power-off program memory, automatically starts and continues to execute program functions after power restoration; Data collection, export, and graphical viewing functions; PID automatic calculation and FUZZY control function; The screen can be adjusted for backlight and the backlight time can be set; The screen display protection function can be set to be timed or manually turned off; Program replication, COPY,  Connection function, editing experiment titles and other program editing functions; Equipped with scheduled startup and shutdown functions; Equipped with date and time adjustment functions; Button and screen lock (LOCK) function; Standby image viewing function and abnormal handling image explanation function

Remote control function

PC communication function (starting a web browser from the PC to access and log in to the device);

Set IP address

Test temperature control function;

External voltage power supply control setting;

Traceability (checking time, setting and sending traceability data);

PC applications;

Web functionality;

Help (instructions on how to use various functions (including sub items) and maintenance of control functions).

RS-232

The communication interface can display curves, collect data, automatically record device temperature and humidity, and generate electronic documents;

As a monitoring and remote control system, the box is equipped with three channel timing interfaces (current not less than *);

Setting method: Chinese/English interface, touch input

Running mode, program mode/fixed value mode

Set the maximum temperature range with upper and lower limits of 5 ℃

Display resolution temperature: 0.01 ℃; Time: 0.1 minutes;

The power-off memory function can set the power-off recovery mode to: hot start/cold start/stop

Temperature input platinum resistor

Imported electronic humidity sensor for humidity measurement, precise measurement of real-time relative humidity and feedback of current humidity value to the controller

Control method: anti integral saturation PID

BTC Balance Temperature Control Method (Temperature Test Equipment)

BTHC Balanced Temperature and Humidity Control Method (Temperature and Humidity Testing Equipment)

Sample temperature measurement: 6 mobile platinum resistors with armor and corresponding installation brackets, transmission cables, and links to a paperless recorder for displaying the temperature around the sample

Storage function standard configuration: 2G SD card to record test data curve, can upload and download data, expandable storage capacity

Software usage environment: IBM PC compatible machine, with a P Ⅱ or above CPU, 128MB or above memory, Simplified Chinese Windows 2000 or Simplified Chinese Windows XP operating system

refrigeration system

In order to ensure the cooling rate and minimum temperature requirements of the laboratory, a binary duplex refrigeration system is used in this laboratory. The duplex system includes a high-temperature refrigeration cycle and a low-temperature refrigeration cycle, and heat exchange is achieved through an evaporative condenser

The refrigeration compressor adopts European imported low-temperature compressors and introduces advanced refrigeration system diagrams from Germany.