Large scale alternating humidity and heat test equipment:

The walk-in constant temperature and humidity laboratory is suitable for aerospace products, information electronic instruments and meters, materials, electrical and electronic products, and various electronic components to experience their various performance indicators in high and low temperature or humid and hot environments.

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Technical parameters:

The performance measured after stabilizing for 2 hours without test load or layer frame. In addition, the temperature rise and fall time refers to the performance of the air-cooled type at room temperature+25 ℃ and no load

1) Temperature range:- 20-80℃（T）；- 40-80℃（F）；- 70-80 ℃ (S) high temperature can be achieved up to 120 ℃ according to the user's needs.

2) Humidity range: 35-95% RH

3) Uniformity: ① Temperature: ≤ 2.0 ℃ ② Humidity: ≤ 5%RH

4) Control accuracy: ① Temperature ± 2 ℃ ② Humidity ± 2.5% RH

5) Heating and cooling time: ① Heating up at about 3.0-4.0 ℃ per minute (expandable to 2-10 ℃/min) ② Cooling down at about 0.7-1.2 ℃ per minute (expandable to 2-10 ℃/min)

6) Accuracy range: ① Temperature: Setting accuracy ± 0.1 ℃, indication accuracy ± 0.1 ℃, resolution ± 0.1 ℃; ② Humidity: Setting accuracy ± 1% R H， Indication accuracy ± 1% R H， Resolution ± 1% R H

7) Internal box size: Made according to user needs, with volumes ranging from 1 cubic meter to 50 cubic meters, all of which can be made, and even larger ones.

Imported programmable touch LCD Chinese dialogue display, microcomputer integrated controller

The temperature and humidity display control instrument adopts a fully imported large screen (5.7-inch LED display) from Japan, with simple screen operation, easy program editing, no need for button input, and direct touch options on the screen. Accuracy: 0.1 ℃ (display range)

Resolution: ± 0.1 ℃;

Temperature sensor: PT100 platinum resistance thermometer;

Control mode: thermal balance temperature and humidity control mode; All electrical appliances use Schneider series products

Temperature and humidity control adopts P I. D+S.R system coordinated control on the same channel

Equipped with automatic calculation function, it can immediately correct the temperature and humidity change conditions, making temperature and humidity control more accurate and stable

The controller operation interface is available in both Chinese and English, and the real-time operation curve chart can be displayed on the screen

It has a capacity of 10 programs, 100 segments per group, and 999 steps per segment that can be cycled. The maximum time setting for each segment is 99 hours and 59 minutes

characteristic:

1. We can provide temperature and humidity environment testing for large parts, semi-finished products, and finished products in the industry

Mainly composed of control panel, distribution panel, distribution panel, insulation storage board, air supply board, heater, humidifier, and cooling system

Composed of a freezer.

2. Combination of color storage board units, the inner cellar can be enlarged freely and disassembled easily, and can be designed and matched according to customer size requirements

Relocation of factory expansion.

3. Adopting a horizontal diffusion vertical heat exchange circulation system with multi wing centrifugal air supply method to avoid any dead corners that may cause damage to the indoor environment

The temperature and humidity are evenly distributed.

4. The freezer adopts imported compressors from Europe and America, and uses environmentally friendly refrigerants. The refrigeration system adopts a binary low-temperature system

Design the circuit system and use different compressors in different temperature ranges to extend the service life of the equipment.

5. The control system can be connected to the computer through an RS-232 interface, and users can design programs on the computer screen

Collecting test data and records, calling program execution, remote control of machine switches, and other functions.

When an abnormal situation occurs, the controller screen will automatically display the fault status in real time, cut off the power switch, and lift the alarm

Provide troubleshooting methods.

7. It has the function of timing marker contacts, which can output control contacts to the outside during operation, providing users with access

Conduct dynamic testing and computer monitoring.

8. The material of the storage board is made of stainless steel and heat-resistant steel plate baked paint, with a sturdy structure, waterproof and beautiful appearance.

9. Temperature and humidity laboratory,Temperature and humidity experimentroomControl method and features: Balanced temperature control systemBTHC Special

Specially designed ceiling fan forced air supplyCircular system, with P I. D. Control SSR through methods,Heating the system

The humidification amount is equal to the heat and moisture loss, so it can last for a long timeStable use during the period.

4Installation site

In order to facilitate heat dissipation and maintenance of the enclosure, the location where this equipment is installed must meet the following conditions:

1. The distance between adjacent walls or objects should have the space shown in Figure 1.

Company:mm

1. In order to stably utilize the functions and performance of the test chamber, a place with a perennial temperature of 15-25 ℃ and a relative humidity of no more than 85% should be selected.

2. The environmental temperature of the installation site should avoid sudden changes.

3. It should be installed on a horizontal surface.

4. It should be installed in a place without direct sunlight.

5. It should be installed in a well ventilated area.

6. It should be installed in a place far away from combustibles, explosives, and high-temperature heat sources.

7. It should be installed in a place with less dust.

8. Install as close to the power supply as possible.

1Electrical installation

1. Pay attention to the power capacity. Do not use the same power supply for multiple machines at the same time to avoid voltage drop, affecting machine performance, and even causing malfunction and shutdown. Please use a dedicated circuit.

2. The variation of power supply voltage should not exceed ± 5% of the voltage (maximum allowable voltage is ± 10%)

3. If it is a three-phase power supply, please pay attention to phase loss protection. If it is confirmed that the three-phase power supply is energized but the machine is not operating, then the machine may be in reverse phase, and only the adjacent two power lines need to be exchanged with each other

There is a grounding terminal at the rear of this machine, please ground it. The grounding wire must be constructed properly. According to the technical guidelines for electrical equipment, for the third type of grounding project, the grounding resistance should be maintained atBelow 50 Ω.

4. If you connect the grounding wire to the water pipe, the water pipe must be a grounded metal pipe. Not all metal pipes can be effectively grounded

5. Do not connect the grounding wire to oil or gas pipes.

6. Do not connect the power supply used for the test product to the power supply of this machine, as it has already been planned and designed. Adding other loads may result in excessive load.

7. Is there a possibility of damaging wiring and piping during installation.

6、 Water tank inlet

The water adding device of this equipment is automatically controlled

7、 Structure Introduction

This test box breaks through the design concept of existing domestic products, with a beautiful appearance, ideal assembly method, compact box structure, and extremely convenient installation and use.

The outer shell of this test box is made of cold-rolled steel plate surface spray treated, with smooth lines and beautiful appearance. The inner chamber workshop adopts stainless steel brushed plate, with a smooth and shiny surface. The rear of the workshop is equipped with a blower duct, which contains heaters, refrigeration evaporators and other components. It is also equipped with a blower fan to blow cold and hot air into the workshop to ensure the required temperature.

The refrigeration system of this test chamber is installed at the lower part of the box, and the refrigeration machine adopts a French Taikang fully enclosed compressor, which is easy to install, reliable in performance, and low in noise.

The insulation material adopts ultra-fine glass wool, which has good insulation effect.

This test chamber is equipped with two silicone rubber door seals, which have good sealing performance.

8、 Performance characteristics

1. Studio size: 500 * 600 * 750 (depth x width x height) mm

2. Temperature range:- 60℃～+150℃

3. Temperature uniformity: ± 2 ℃

4. Temperature fluctuation: ± 0.5 ℃

5. Humidity range: 20-98% R · H

6. Humidity deviation:+2~-3% R · H

7. Cooling rate: 0.7-1 ℃/min (unloaded)

8. Heating rate: 2-3 ℃/min (no load)

9. Noise (dB): ≤ sixty-five

10. Power supply: AC3800V 50HZ

11. Power: 5.5KW

1. Inspection before operation

1. Confirmation of power supply and grounding wire

Is the power supply properly connected according to specifications and properly grounded.

2. Check the over temperature protector

Check if the over temperature protector is set

3. Confirmation of water

Is there enough water stored in the water tank?

4. Confirmation of water pipes

Is the drainage pipe properly connected?

5. Confirmation of wet bulb test gauze

lIs it clean (clean every seven days, everyReplace the test gauze once a month)

Test whether the gauze is moist (when there is water in the water supply tank and the water level is normal, but the gauze cannot be wetted, please replace it with a new test gauze).

6. Confirmation of humidification level of humidifier

lIs the water level normal. After the humidifier is supplied with water3-5 minutes, check water level)

Is the water used in the humidifier clean? (The humidification level of the humidifier should be regularly drained and cleaned with a brush to maintain cleanliness.)

7. Check if the over temperature hold switch is set correctly.

Note: When only conducting temperature tests, the test cloth should be removed. If the test cloth isAfter operating at high temperatures above 85 ℃, the test cloth should be replaced before the next operation, otherwise it may not be able to absorb water again. (When testing the packaging of the cloth, it has undergone * * processing.)

1. Usage method

1. Connect the power supply and turn on the main power switch

2. Inject the experimental water into the water storage tank and observe the water level of the humidifier to see if the water has submerged the heating tube

3. Hang the prepared wet ball gauze on the wet ball sensor, with a length of both sides placed in the wet ball sink. (Soak the wet ball gauze before hanging)

4. The water level in the wet bulb tank is adjusted by a level switch, which is called water balance adjustment. If the water level in the wet bulb tank is too high in the working room, the level switch will automatically adjust, otherwise it will be raised

5. Press the power switch, the indicator light will turn on, and set the temperature, humidity, and time to the desired level (operate according to the instrument manual)

6. Inspection and testing operation

7. Make necessary test records according to the test requirements

8. After the natural shutdown of the test according to the prescribed time, the power should be turned off in a timely manner to make all systems in the test box in a static state.