The constant temperature and humidity test chamber for alternating humidity and heat is a similar product, but with different names. The high and low temperature alternating humidity and heat test chamber is an essential testing equipment in the fields of aviation, automotive, home appliances, scientific research, etc. It is used to test and determine the parameters and performance of electrical, electronic, and other products and materials after undergoing high temperature, low temperature, alternating humidity and heat or constant temperature tests.

High and low temperature large alternating humidity test room

Performance indicators:

Temperature range: -40 ℃~80 ℃ (alternating temperature range: -40 ℃~60 ℃) or RT+10~100, 200, 300 ℃

Temperature fluctuation: ± 0.5 ℃

Temperature uniformity: ± 2 ℃

Heating rate: Average of about 1.0 ℃ to 3.0 ℃/min (can also be done up to 3.0 ℃/min)

Cooling rate: average about 0.7 ℃~1.2 ℃/min (can also be designed to 1.2 ℃/min)

The controller of this test chamber can operate continuously for more than 24 hours, which is convenient for operators who need to stay by the machine for a long time. The laboratory can also be connected to a computer, and the laboratory can be operated and controlled on the computer. This controller has the following characteristics:

1. When the machine malfunctions, it will sound an alarm and automatically shut down;

2. There are two types of LCD display screens in Chinese and English. Its appearance is clear, the structure is reasonable, and the program is easy to edit;

3. It is a well-known brand's original 'Korean' TEMI880 or Korean ternary 'series controller;

4120The group program has the largest capacity and each group can be memorized100Section temperature and humidity;

5. It can display the complete system operation status, real-time display execution and set program curves;

6. The controller can be accessed throughRS/232orRS/485The interface is connected to a computer and can be connected to a printer to print temperature and humidity curve monitoring data;

7. HavingPIDControl communication function;

8. Time setting range:0～999 Hour;

9. Accuracy range Setting accuracy: temperature±0.1℃, humidity±0.1%R·HIndication accuracy: temperature± 0.1℃, temperature±0.1%R·H；

10. Temperature and humidity sensor Platinum resistance·PT100Ω；

11. Having power-off program memory,Automatically start and continue executing program functions after power restoration;

(1) The inner wall of the studio is made of imported SUS304 # stainless steel mirror panels, which are processed and formed. The wall surface is resistant to high temperature, corrosion, and easy to clean

(2) The shell is made of high-quality cold-rolled sheet metal and processed into shape. The surface is phosphated, electrostatically sprayed with powder, and subjected to high temperature treatment, making it resistant to friction, corrosion, and peeling

(3) The insulation layer adopts hard polyurethane foam and ultra-fine insulation cotton

(4) Stainless steel finned high-speed heating (1.0KW × 1) electric heating tube

(5) Specialized motor and centrifugal convection fan for achieving strong convection and vertical diffusion circulation

(6) Imported SUS304 # stainless steel mirror panel with specially designed air duct, using split flow blower, can effectively ensure the uniformity of temperature circulation inside the test chamber

(7) Stainless steel movable sample test stand, with a load-bearing capacity of over 25Kg per layer (two layers in total)

(8) The refrigeration system uses a French imported unit type Taikang fully enclosed compressor unit, and the refrigerant uses DUPONT's Euro II standard R404a refrigerant (10) air-cooled condenser and finned convection evaporator

(9) Imported refrigeration accessories (Italian made solenoid valves, filters, American made pressure controllers, oil pressure controllers, shock absorbers, Taiwanese oil separators, etc.)

(10) The temperature measurement adopts imported PT-100 sensor

(11) The temperature control adopts an imported temperature controller (with a touch button setting method) Detect and control the required temperature inside the box, and use SSR solid-state relays as heating actuators.

Fault description:

1. When the power switch is turned on for the first time and there is no display on the controller, it is necessary to check the power supply of the equipment to see if there is electricity in all three phases of the power supply or replace any two phases of the three-phase power supply. If it still cannot work properly, please notify our after-sales service department or local office.

2. During the operation of the equipment, a "beep" alarm sound is emitted from the back of the control cabinet, and the controller screen displays "DRY HEAT" indicating that the internal temperature of the equipment has exceeded the limit. At this time, the temperature control system of the equipment needs to be checked.

3. During the operation of the equipment, the back of the control cabinet emits the same "beep" alarm sound, and the controller screen displays "WET HEAT", indicating that the humidifier inside the equipment is overheating (i.e. there is no water heating in the humidification water tank). At this time, the humidity replenishment system needs to be checked. (Check if the water pump in the water tank is working and if the pipeline is unobstructed)

4. When an alarm is triggered, the screen displaying "REF ERR1" or "REF ERR2" indicates that refrigeration unit 1 or refrigeration unit 2 is abnormal, that is, the system high voltage in refrigeration unit 1 or refrigeration unit 2 is too high or the refrigeration unit current is overloaded. It is necessary to reset the thermal relay or pressure relay in the electrical system. In the refrigeration system, when a single machine is used for refrigeration, only the "Refrigeration Unit 1" alarm will be generated when there is a refrigeration system failure