High and low temperature programmable constant temperature and humidity test chamber Environmental temperature and humidity test chamber High and low temperature alternating humidity chamber

Description :

　　1High and low temperature programmable constant temperature and humidity test chamberRefrigeration principle

　　The principle of refrigerant cyclic motion is adopted to transfer heat from indoors to outdoors through the vapor-liquid change process of refrigerant, thereby achieving the purpose of cooling. Specifically, under the action of the compressor, the refrigerant changes from a low-pressure liquid state to a high-pressure gas state, thereby transferring heat to the outside and reducing the indoor temperature, thus achieving the purpose of cooling.

　　IIEnvironmental temperature and humidity test chamberPerformance:

　　Refers to the air-cooled type at room temperature of 20 ℃, when unloaded

　　Specification and model: HE-WS-80/100/150/225/408/800/1000 (A, B, C, D, E)

　　Capacity:

　　80 liter inner box size (width * height * depth): 400X500X400mm

　　150 liter inner box size (width * height * depth): 500X600X500mm

　　225 liter inner box size (width * height * depth): 600X750X500mm

　　408 liter inner box size (width * height * depth): 600X850X800mm

　　800 liter inner box size (width * height * depth): 1000X1000X800mm

　　1000 liter inner box size (width * height * depth): 1000X1000X1000mm

　　Temperature range:

　　A represents 0 ℃ to+150 ℃, B represents -20 ℃ to+150 ℃, C represents -40 ℃ to+150 ℃,

　　D represents -60 ℃ to+150 ℃, E represents -70 ℃ to+150 ℃

　　Temperature accuracy: ± 0.01 ℃

　　Temperature fluctuation: ± 0.5 ℃

　　Temperature uniformity: ± 2.0 ℃

　　Humidity range: 20% RH to 98% RH

　　Humidity accuracy: ± 0.1% R.H

　　Humidity fluctuation: ± 2.0% R.H

　　Humidity uniformity: ± 3% R.H

　　Heating rate: average 3 ℃/min (non-linear, unloaded); Rising from room temperature+25 ℃ to+85 ℃ for about 20 minutes); Non standard specifications can be customized according to requirements

　　Cooling rate: average 1 ℃/min (non-linear, unloaded); Reduce from room temperature+25 ℃ to -40 ℃ for about 65 minutes; Non standard specifications can be customized according to requirements

　　IIIHigh and low temperature alternating humidity chamberrefrigeration system

　　Refrigeration system and compressor: In order to ensure the cooling rate and temperature requirements of the test chamber, this test chamber adopts a binary cascade air-cooled refrigeration system composed of a Taikang fully enclosed compressor. The cascade refrigeration system consists of a high-temperature refrigeration cycle and a low-temperature refrigeration cycle, with the connecting container being an evaporative condenser. The evaporative condenser also plays a role in energy transfer, transferring the thermal energy inside the working chamber through a two-stage refrigeration system to achieve the goal of high temperature. The design of the refrigeration system applies energy regulation technology, which is an effective way to ensure the normal operation of the refrigeration unit while effectively adjusting the energy consumption and cooling capacity of the refrigeration system, reducing the operating costs and failure rate of the refrigeration system to a more economical state.

　　Refrigerant: Adopting DUPONT R404 (high temperature cycle) and R23 (low temperature cycle)

　　Auxiliary parts: Expansion valve (Danfoss, Denmark), solenoid valve (CASTEL, Italy)

　　Filter (American Aigo); Oil separator (Taiwan, China Crown Press) and other refrigeration accessories are imported

　　The usage steps are as follows:

　　1. Check the instrument to ensure that it is intact and undamaged;

　　2. Check the power supply and ensure that the power cord is connected correctly;

　　3. Set the temperature according to the experimental requirements;

　　4. Put the sample into the test chamber;

　　5. Turn on the instrument, press the switch, and start the instrument;

　　6. Monitor temperature, regularly check temperature to ensure temperature stability;

　　7. Complete the experiment, then turn off the instrument and remove the sample.

　　Daily maintenance mainly includes:

　　1. Regularly inspect the electrical system, control system, refrigeration system, etc. of the test chamber to ensure their normal operation;

　　2. Regular cleaning, regularly clean the dirt inside and outside the test chamber, and keep its surface clean;

　　3. Regularly replace the refrigerant to ensure its cooling effect;

　　4. Regularly check the sealing and the sealing of the test chamber to ensure its normal operation.

AfterSalesService :

• Humidity Chamber