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Beijing Pusanda Instrument Technology Co., Ltd
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High and low temperature wet heat cycle testing machine

NegotiableUpdate on 02/01
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Overview

The high and low temperature wet heat cycle testing machine can accurately simulate complex natural environments such as low temperature, high temperature, high humidity, low temperature and low humidity, and is suitable for quality control testing in industries such as electronics, electrical appliances, batteries, plastics, food, paper products, vehicles, metals, chemistry, building materials, research institutes, inspection *, universities, etc.

Product Details

Box making material - The studio uses SUS # 304 8K mirror stainless steel for production, and the outer box is made of cold-rolled steel plate with electrostatic spraying or stainless steel matte sandpaper.

High and low temperature wet heat cycle testing machineTechnical parameters and size:

1. Temperature range: -70~150 ℃; Temperature fluctuation: ± 0.5 ℃; Temperature uniformity: ≤ 2.0 ℃

2. Humidity range: 20~98% RH; humidity fluctuation: ± 2.5% RH; humidity uniformity: ≤ 3.0% RH

3. Heating rate: an average of about 2.0~3.0 ℃ per minute; Cooling time: Approximately 0.7~1.2 ℃ per minute on average

4. Cooling method: air-cooled cascade compression cooling method

5. Heating method: Stainless steel electric heating tube heating method

6. Humidification method: electric steam humidification method

7. Control mode: Balanced temperature and humidity control mode

8. Equipment model: BY-260TH series

9. Specification classification: 80 liters, 100 liters, 120 liters, 150 liters, 225 liters, 408 liters, 800 liters, 1000 liters

10. Protection devices: zero crossing valve fluid power controller, heating air burn protection switch, compressor overpressure protection switch, compressor overload overcurrent protection switch, phase loss protection switch, non fuse overload protector, water tank water shortage protection switch, heating and humidification fast fuse.

refrigeration system

Generally speaking, the refrigeration methods are mechanical refrigeration and auxiliary liquid nitrogen refrigeration. Mechanical refrigeration adopts vapor compression refrigeration, which mainly consists of a compressor, condenser, throttling mechanism, and evaporator. (French Taikang fully enclosed compressor)

heating system

It is mainly composed of high-power resistance wires. Due to the high heating rate required for the test, the heating system power is relatively high, and a heater is also installed on the bottom plate of the testing machine. (Nickel chromium alloy electric heating heater)

humidification system

The humidification method generally adopts steam humidification method, which directly injects low-pressure steam into the test space for humidification. This humidification method has the ability to humidify, fast speed, sensitive humidification control, and is particularly easy to achieve forced humidification during cooling. (All stainless steel shallow surface evaporative humidifier)

control system

It determines important indicators such as the heating rate and accuracy of the testing machine. Nowadays, most controllers of testing machines use PID control; (LCD touch control instrument)

Temperature and humidity sensor

Sensors are mainly temperature and humidity sensors. The most commonly used temperature sensors are platinum batteries and thermocouples. (Platinum resistance PT100), humidity measured by dry wet bulb method

air supply system

The air circulation system generally consists of a centrifugal fan and a motor that drives its operation. By adjusting the air guide plate up, down, left, and right, the circulation of air inside the test chamber is ensured. (Aluminum multi blade centrifugal fan+extended axis motor)

High and low temperature wet heat cycle testing machineControl system functions:

1) Display mode: LCD display, true color interface, Chinese and English operation

2) Display accuracy: temperature 0.1 ℃, time 1min, humidity 0.1% R.H

3) Graphic display: The program curve is fully displayed, and 120 programs can be customized, modified, and stored. Each program can be set with 100 segments and 999 cycles

4) Temperature PV value retransmission, with 4-20mA analog output

5) Control mode: fixed value control, program control

6) Equipped with a 128KB SRAM lithium battery for data backup and data saving, it can display set parameters, test curves, running time, fault records, historical records, and help information. The heater's working status and test program can run automatically. The programming of the control program adopts a human-machine dialogue method, which only requires setting the temperature and time to achieve automatic operation function. The detection device can automatically display detailed faults and alarms.

7) Experimental data shows that it is possible to set the actual temperature, measured temperature, total operating time, segment operating time, remaining segment time, heating status, calendar time, etc

8) Fault information: When an abnormality occurs, record and display the fault status

9) Built in PLC function, directly drives various execution components, and logical operations are completed by PLC

10) Refrigeration machine industrial control automatic control: automatically select the working state of the refrigeration machine according to different experimental conditions

11) Equipped with power-off protection function and automatic power on function, it can be set according to needs, including the maximum allowable time interval for automatic power on after power-off and power on

12) Optional USB interface, convenient storage, with standard RS232 or RS485 computer communication interface, can be optionally connected to a computer for upper computer management. Implement parameter setting modification, programming, and saving and printing of experimental data on a computer.