Suitable for emerging industries such as electronics and electrical, instrumentation, and optoelectronic cables, as well as other industries such as plastics and rubber, it has a wide range of applications and can provide high temperature, low temperature, high humidity, and low humidity environments to test the heat resistance, cold resistance, moisture resistance, and dryness resistance of products.Characteristics of programmable large-scale alternating humidity and heat testing instrument

Temperature range: 0~100 ℃ (150 ℃)- 20~100 ℃ (150 ℃)- 40-100 ℃ (150 ℃)

-60-100 ℃ (150 ℃), -70~100 ℃ (150 ℃) (to be selected during procurement)

Humidity range: 20%~98% R.H. (special models can achieve performance of 10%~98% R. or H/5%~98% R.H.)

Temperature accuracy: ± 0.01 ℃

Uniformity: ± 1.5 ℃

Humidity accuracy: ± 0.1% R.H

Uniformity: ± 3.0% R.H

Temperature and humidity control accuracy: ± 0.01 ℃; ±0.1%R.H.

Temperature and humidity control fluctuation: ± 0.5 ℃; ±1.5%R.H.

Heating time/cooling time: average about 4.0 ℃/minute; On average, it is about 1.0 ℃/min (special models can achieve a performance of 5-10 ℃/min)

Internal and external materials: inner box SUS 304 # mirror stainless steel, outer box SUS 304 # brushed stainless steel or iron plate spray coating treatment

Insulation material: high temperature resistant high-density PU hard foam+glass wool insulation material

Cooling system: air-cooled or water-cooled single-stage compressor (+25 ℃~-40 ℃)/two-stage compressor (-40 ℃~-70 ℃)

Protection devices: no fuse switch, compressor overload protection switch, compressor overheating, refrigerant high and low voltage protection switch, fuse, dry burning, box over temperature alarm system.

Accessories: Recorder (optional), Observation Window, 50mm Test Hole, PL Box Lamp, Partition, Dry and Wet Ball Gauze

Controller: Choose between Korean "TEMI" or Japanese "OYO" brand

Refrigeration system: air-cooled or water-cooled imported compressors from Europe and America (Taikang, Bitzer, Gulun), heat dissipation plate evaporator

Power supply: 1 Φ 220VAC ± 10% 50/60Hz&3 Φ 380VAC ± 10% 50/60Hz

Product execution standards

GB/T 2423.1-2008 "Environmental testing for electrical and electronic products - Part 2: Test A: Low temperature"

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

GB/T 2423.3-2006 "Environmental Testing for Electrical and Electronic Products - Part 2: Test Cab: Constant Damp Heat Test"

GB/T 2423.4-2008 "Environmental Testing for Electrical and Electronic Products - Part 2: Test Db: Alternating Damp Heat (12h+12h Cycle)"

GB-T5170.18-2005 Environmental Testing Temperature/Humidity Combined Cycle Test Equipment for Electrical and Electronic Products.

Equipment structural performance

The test box is transported by splicing, and the specifications and sizes can be customized according to customer needs. The equipment compressor cooling can be divided into water-cooled and air-cooled;

The stable temperature and humidity cycle relies on the internal stirring and circulation of the fan, with reliable airflow circulation in every corner to ensure uniformity of the test;

The refrigeration system adopts cascade two-stage refrigeration, and the refrigeration pipeline uses dual loop circulation,

Freezing system and heating system:

1. Imported sealed energy-saving high-efficiency compressor

2. Wave shaped fin type forced air supply condenser

3. Slope type FIN-TUBE evaporator

4. Original imported solenoid valve: drying filter, expansion valve and other refrigeration components

5. Internal spiral K-TYPE refrigerant copper tube

6. U-Type finned high-speed electric heating tube

7. The heating and cooling systems are completely independent

Control system:
1. Imported programmable touch LCD Chinese dialogue display, microcomputer integrated controller
2. 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.
3. Resolution: [± 0.1 ℃]
4. Temperature sensor: PT100 platinum resistance thermometer;
5. Control mode: thermal balance temperature and humidity control mode; All electrical appliances use Schneider series products
6. Temperature and humidity control adopts P I. D+S.S.R system coordinated control on the same channel
7. It has the function of automatic calculation, which can immediately correct the temperature and humidity change conditions, making temperature and humidity control more accurate and stable
8. The controller operation interface is available in both Chinese and English, and the real-time operation curve chart can be displayed on the screen
9. It has a capacity of 10 programs, 100 segments per group, and 999 steps per segment that can be cycled. The maximum value for each segment is set to 99 hours and 59 minutes
10. After inputting the data and experimental conditions, the controller has a screen lock function to avoid manual touch and shutdown
11. Equipped with RS-232 or RS-485 communication interface, it can be programmed on a computer to monitor the testing process and perform functions such as automatic power on/off, printing curve data, etc
12. The controller has an automatic screen saver function, which better protects the LCD screen during long-term operation (making its lifespan longer)
13. In operation or setting, if an error occurs, a warning signal will be provided
Heating system:
1. Adopting nickel chromium electric heater
2. High temperature completely independent system, does not affect low temperature testing, high temperature testing, and alternating wet heat testing
3. The output power of temperature and humidity control is calculated by a microcomputer to achieve high-precision and high-efficiency electricity efficiency