High and low temperature (humid heat) alternating cycle test chamber

The high and low temperature (humid heat) alternating cycle test chamber is a machine that can perform long-term high and low temperature, low and high temperature continuous cycle tests. It is suitable for adaptability testing of electrical and electronic products, plastic materials, paper printing, metals, raw devices and other materials during storage, transportation and use in high and low temperature environments. This testing equipment is mainly used to conduct environmental simulation tests on the physical and other related characteristics of products under low temperature, high temperature, and other conditions according to national standards or user defined requirements. After testing, the performance of the product is judged through inspection to determine whether it still meets the predetermined requirements, for the purpose of product quality production and factory inspection.

The high and low temperature (humid heat) alternating cycle test chamber can set multiple programs according to different temperature test conditions, cycling from high temperature to low temperature and then from low temperature to high temperature, continuously cycling until the test conditions are completed. The main cycling function is the transition between high and low temperatures. If humidity testing conditions are required, humidity can also be added to perform high and low temperature wet heat alternating cycling tests.

1. PV curve/group curve: real-time display of temperature, humidity PV, SV curve, historical storage curve, group curve and progress status;

2. The program can be set to 100 groups and segments, with a maximum of 999 cycles, and each segment can be set to 99 hours and 59 minutes;

3. Provide USB communication interface for backup/historical curve/historical data, easy to use; RS485 interface and RS232 communication interface can also be optionally selected, which can be controlled and monitored freely through a PC;

4. It has functions such as program correction, clearing, reservation, startup, power outage, memory, key locking, etc;

5. It has multiple alarm functions, and when a fault occurs, it can be displayed on the screen to eliminate the fault;

Model: MH80A-40

Nominal volume: 80L

Temperature range: (-40 ℃~+150 ℃)

Humidity range: 25-98% RH

Temperature fluctuation: ≤ 1 ℃

Temperature deviation: ≤± 2 ℃ (≤+200 ℃)

Humidity deviation: ± 3% RH (≤ 75% RH)

Heating time: (-40 ℃~+150 ℃) ≤ 60 minutes

Cooling time: (+20 ℃~-35 ℃) ≤ 60 minutes

Internal dimensions mm: W400 * D400 * H500 (mm)

External dimensions mm: W600 * D1000 * H1650 (mm)

Temperature (humidity) adjustment method: BTC balanced temperature adjustment method

Shell material: double-sided galvanized steel plate, surface spray treated

Inner box material: stainless steel plate

Insulation material: hard polyurethane+glass fiber cotton

Power supply: AC220V ± 10% 50HZ ± 10% single-phase two-wire+protective grounding wire

Power supply current (A): 16

Power (kW): 3.1

Weight (kg): 90

Standard configuration: 1 timer, 2 sets of sample racks, 1 power cord (5 meters)

Optional accessories: Cable hole rubber plug, sample holder, wet ball gauze, water purifier

Safety devices: leakage protector, box overheating protector, fan overheating protector, compressor overpressure, overcurrent protection, dry burning protection, waterway system protection

Regulator:

Heater: Nickel chromium alloy electric wire heater

Fan: Axial flow fan

Refrigeration method: Mechanical compression binary cascade refrigeration (air-cooled)

Refrigeration compressor: fully sealed compressor

Refrigerant: R404a/R23

controller:

Display screen: 7 "LCD touch color screen

Operation mode: fixed value mode and program mode

Setting method: Touch based setting

Program capacity: can be programmed into 100 groups, with 100 segments per group

Setting range: Adjust according to the operating temperature range of the device (upper limit+5 ℃, lower limit -5 ℃)

Display resolution: time; 0.1min; Temperature: 0.1 ℃

Input: Platinum resistor

Control method: anti integral saturation PID, BTC combined with temperature control method

1. The inner and outer boxes are formed by laser processing, with a beautiful and elegant appearance, and are equipped with non reactive handles for easy operation.

2. The outer box is made of SUS304 # brushed stainless steel or A3 cold-rolled steel plate with electrostatic spraying (to be selected by the customer).

3. The inner box is made of SUS # 304 # stainless steel.

4. There is an observation window with lighting to keep the inside of the box bright, and a tempered glass embedded in the heating body is used to clearly observe the condition inside the box at any time.

5. The right side of the box is equipped with a 50mm diameter cable hole, which can be used for external testing power or signal lines for power on testing.

6. The insulation material is made of high-density glass fiber cotton and polyurethane foam, with a thickness of 100mm. A double-layer high tensile sealing strip that is resistant to high and low temperatures is used between the door and the box to ensure the sealing of the testing area.

7. The bottom of the test chamber adopts high-quality fixed PU movable wheels and horizontal foot cups.

GB 10589-89 Technical Conditions for Low Temperature Test Chamber

GB 10592-89 Technical Conditions for High and Low Temperature Test Chambers

GB 11158-89 Technical Conditions for High Temperature Test Chamber

GB2423、 1-89 Basic Test Procedures for Electrical and Electronic Products - Test A: Low Temperature Test Method

GB2423、 2-89 Basic Test Procedures for Electrical and Electronic Products - Test B: High Temperature Test Method

GB2424、 1-89 Basic Environmental Testing Procedures for Electrical and Electronic Products - Guidelines for High Temperature and Low Temperature Testing

GB/T5170、 2-1996 Basic Parameter Calibration Method for Environmental Testing Equipment of Electrical and Electronic Products

1. Temperature: 5 ℃~35 ℃;

2. Relative humidity: not exceeding 85% RH;

3. There is no strong vibration or electromagnetic field around;

4. There is no high concentration of dust or corrosive substances around;

5. No direct sunlight or direct radiation from other heat sources;

6. There is no strong airflow around, and when forced airflow is required, the airflow should not directly blow onto the box;

7. The test chamber should be placed steadily and kept level;

8. There should be a certain distance around the test box to facilitate maintenance operations;

9. The installation site has good ventilation;

10. Good grounding.