A) Test and storage of samples of flammable, explosive and volatile substances

B) Test of corrosive substance samples,test and storage of biological samples

C) Test and storage of strong electromagnetic emission source samples

About W4700 mm*D5000 mm*H3200 mm(Excluding unit size)

Reminder: Please refer to the final design and confirm the three views for the external dimensions

IEC60068-2-1:2007 “Environmental Testing-Part 2-1: Tests-Test A: Cold, IDT”

IEC60068-2-2:2007 “Environmental Testing-Part 2-1: Tests- Test B-Dry heat, IDT”

IEC60068-2-78:2012 “Environmental Testing-Part 2-78: Tests-Test Cab: Damp heat, steady state, IDT”

IEC60068-2-30:2005 “Environmental Testing-Part 2-30: Tests-Test Db: Damp heat, cyclic (12h+12h cycle), IDT”

PS: Standard humidity 20%~95%HR

Quantity: 2

Location: On the door of the test room (or the place designated by the customer)

Form: 3-layer vacuum strengthened glass with built-in anti-fogging heating element

A hole with a diameter of φ100mm on the left side chamber wall and equipped with a rubber isolation plug and a rubber cover at the same time.

The floor adopts a 4.0mm stainless steel non-slip design to prevent personnel from being injured during internal operations.

The floor is designed with a drainage tank,

and the test chamber has no water inside after the end of high temperature and humidity test

The foot cup of the electric box adopts silica gel pad to absorb shock and protect the compressor and copper pipe welding

Conventional constant humidity method: When the actual temperature reaches the set temperature, the compressor's cooling capacity remains unchanged, and the heating method is used to offset the compressor's cooling capacity to achieve temperature balance in the box.

Cold balance method: When the actual temperature reaches the set value, the cold solenoid valve output is controlled by the controller PID, and the temperature in the box is balanced through the controlled cooling output. Compared with the conventional constant humidity method, the heating output is reduced to make the whole unit Compared with the conventional method, the equipment can achieve 40% energy saving

With temperature and umidity measurement sensor and controller

PT100 platinum resistance sensor

Original imported German Bitzer semi-hermetic compressor.

2 sets of 8HP compressors

Non-fluorine environmental protection HFC404A (Honeywell) and DuPont R23 refrigerant

High-efficiency shell and tube type (water cooling)

Equipped with cooling water tower (well-known brand) and pipeline

High-efficiency multi-section fin evaporator with hydrophilic membrane (thickened fin)

Emerson AW

Danfoss Thermal Expansion Valve

Japan Saginomiya and Danfoss

All high-quality products of the first international brand (pictured on the right: drying filter)

Freezing and dehumidifying by the refrigeration system (the air in the box passes through the evaporator below the dew point temperature, and water is precipitated).

*Choose evaporator fins with hydrophilic membrane treatment, better dehumidification performance, because the water tension of the hydrophilic membrane aluminum fins is small, the water droplets from air condensation are easy to slip off, and it is not easy to produce obstructive water bridges in the fin gap. Thereby greatly improving the dehumidification efficiency!

Stainless steel finned nickel-chromium alloy electric heating tube, heating tube anti-MC adhesion design, heater connection, heat-resistant wire is used, the heater is placed in the circulating air duct on the top of the box, and fire-resistant and heat-insulating materials are added around it

A) The humidification cylinder (boiler method) is used for humidification, which is faster than the traditional surface humidification (water pan type) and has higher control accuracy.

In the box

It will not produce impurity pollution such as scale, has good low-humidity performance, and is easy to clean.

B) The humidification tube adopts all stainless-steel seamless casing, the insulation resistance is greater than 50MΩ, and has a dry-burn prevention controller

C) The humidification cylinder is made of stainless steel and has a water level observation window.

D) Low temperature with dry air

Non-contact control the output signal of the controller achieves high precision through SSR solid state relay

Non-contact switch control

The main components of the control circuit are all high-quality brands

1. Test product over-temperature protection (independent)

2. With no fuse protection switch

3. Heater over-temperature protection switch

4. The compressor is overloaded and overheated

5. Compressor high- and low- pressure protection

6. System over-current protection device

7. The controller self-diagnoses the fault and displays it

8. Cooling water pressure is too low protection

9. Leakage protection, short circuit protection, wrong phase / phase loss protection, fan overload protection, independent over temperature protection, water shortage protection, water cut protection, operation indication, sound and light alarm, automatic power off after alarm, etc.

1. Ambient temperature: -5℃~+28℃;

2. Relative humidity: ≤85%RH;

3. Atmospheric pressure: 80kPa~106kPa

4. No strong vibration around

5. Equipment power supply: (note that the test power supply is not included)

5.1 Connect to power supply 380V AC (±10%), three-phase wire + protective ground wire, grounding resistance ≤ 4Ω;

5.2 Total power: about 30KW

5.3 Maximum working current: about 70A