From +20~-40°C, about 40min

From +20-100°C, about 30min

Structure:

The integral structure, that is, the test chamber, the refrigeration system, the heating/humidification system, the air conditioning system, the electrical control cabinet, and the refrigeration unit are a whole, the refrigeration unit is located at the bottom of the box, and the electrical control part is placed on the side of the test chamber for easy operation

Box:

a) In the air duct mezzanine at one end of the studio, heat/humidifier, refrigeration evaporator, blower motor, fan blade and other devices are distributed;

b) There is 1 cable threading hole on the side of the test chamber, and the size is ф50mm;

c) The test chamber studio is made of 1mm thick SUS304 stainless steel plate, and the box shell is made of 1mm thick high-quality stainless steel

d) The insulation material is made of polyurethane foam, with a thickness of 100mm, the insulation effect is good, and the outer surface of the test chamber does not frost or condensation.

e) The studio is equipped with 1 layer of height-adjustable stainless steel shelves;

f) The box is equipped with a condensate drain

Observation & Lighting Fixtures:

A multi-layer insulating glass observation window is installed on the door, with a size of about 300×275mm, and is equipped with a heating and anti-frost device. A (AC12V) 20W halogen lamp is installed on the door of the test chamber.

The control system consists of:

1. Temperature measurement: Pt100 platinum resistance;

2. Humidity measurement: Pt100 platinum resistance wet and dry bulb method;

3. Control device: programmable temperature and humidity controller VISO6071/TEMI880 random. It can display the working status of set parameters, time, heater, humidifier, etc., and has the functions of automatic operation of test and self-tuning of PID parameters. 

4. The automatic operation function of the refrigerator can be realized only by setting the temperature. The control system uses an intelligent control software system, which has the working conditions of automatic combination of refrigeration, heating, humidification and other subsystems, so as to ensure high-precision control in the entire temperature and humidity range and achieve the purpose of energy saving and consumption reduction. The perfect detection device can automatically carry out detailed fault display and alarm, such as when the test chamber is abnormal, the controller automatically displays the fault status.  

5. Screen display: set temperature and humidity; measured temperature and humidity; Heating, humidification, time, temperature and humidity curves and other working statuses and various alarm indications.

6. Setting accuracy: temperature: 0.1°C humidity: 0.1%R.H   

7. Program capacity: 100, the total number of program sections is 1000, and the maximum time of a single step of the program: 99 hours and 59 minutes; Programs can be looped, and programs can be linked to each other; 

8. Operation mode: constant operation, program operation;

9. Other major low-voltage electrical components are made of well-known brand products: such as Schneider AC contactors, thermal overload relays, OMRON small intermediate relays, Delixi circuit breakers, Taiwan Fanyi water level float switches, etc.

1. Over-temperature protection of the studio;

2. Heater short-circuit protection;

3. Humidifier short-circuit protection;

4. Fan overload protection;

5. Compressor overpressure protection;

6. Compressor overload protection;

7. Water cut-off/water shortage protection;

8. Leakage protection;

9. Safe and reliable grounding device;