11m3 formaldehyde climate chamberEquipment usage:

Mainly used for the determination of free formaldehyde in consumer goods such as wooden products, furniture, flooring, carpets, footwear products, and building decoration materials.

II1m3 formaldehyde climate chamberProduct Overview:

Place the specimen with a known surface area into a testing chamber where temperature, humidity, air flow rate, and air displacement rate are controlled at certain values. Formaldehyde is released from the test piece and mixed with the air inside the box. The air inside the box is regularly extracted, and the concentration of formaldehyde absorbed in the water is measured by drawing air from the box through a washing cylinder filled with water. The formaldehyde concentration in the air of the test box is calculated from the formaldehyde concentration in the gas washing cylinder and the volume of extracted air, expressed in milligrams per cubic meter (mg/m3). Sampling is periodic until the formaldehyde concentration in the testing chamber reaches equilibrium.

IIIset upReference standards for calculation：

Limit of formaldehyde emissions from indoor decoration materials, artificial boards and their products (GB 18580-2017);

ASTM E 1333-96 Standard Test Method for Determination of Formaldehyde Concentration and Release Rate in Gas Emissions from Wood Products in Large Environmental Chambers

ASTM D 6007-02 Standard Test Method for Formaldehyde Concentration in Gas Emissions from Wood Products Using a Small Scale Environmental Chamber

Environmental chamber method for measuring formaldehyde emissions from artificial boards EN 717-1

Test Methods for Physical and Chemical Properties of Artificial Boards and Decorative Artificial Boards (GB/T17657-2013)

Limit of harmful substances in indoor decoration materials and wooden furniture (GB18584-2001);

Indoor decoration and renovation materials - Limits of harmful substance release from carpets, carpet liners, and carpet adhesives (GB18587-2001);

1M3 climate chamber for formaldehyde emission detection (LY/T1980-2011);

ISO 12460-1.2007 "Determination of formaldehyde emissions from boards using the 1M3 climate chamber method"

1 m3 climate chamber for formaldehyde emission detection "(LYT 1612-2004)

4Performance characteristics:

Advanced heat exchanger technology: high heat transfer efficiency, small temperature gradient;

Cold and hot resistance temperature regulating water tank: stable temperature control;

Imported humidity, temperature and humidity sensor: The sensor has high accuracy and stable performance;

High quality refrigeration machine: imported refrigeration machine, stable operation, long service life;

● Protection device: Both the climate chamber and dew point water tank have high and low temperature alarm protection measures and high and low water level alarms;

● Protective measures; The compressor also has overheat, overcurrent, and overpressure protection measures, ensuring safe and reliable operation of the entire machine;

Stainless steel inner box: The inner cavity of the constant temperature box is made of mirror stainless steel, with a smooth surface that does not condense or adsorb formaldehyde, ensuring detection accuracy;

The constant temperature box is made of hard foam material, and the door is sealed with silicone rubber strips, which have good insulation and sealing performance. The box is equipped with a forced air circulation device (forming a circulating air flow) to ensure temperature and humidity balance inside the box.

5Technical parameters:

1. Working environment temperature: 15 ℃~30 ℃ Working environment humidity: ≤ 90％RH

2. Adjustable temperature range: 10 ℃~40 ℃, temperature control accuracy ± 0.1 ℃, fluctuation rate ≤± 0.5 ℃, uniformity ≤± 0.5 ℃

3. Adjustable humidity range: 30% to 80%, humidity control accuracy ± 2% RH, fluctuation rate ≤± 3% RH, uniformity ≤± 5% RH

4. Air exchange rate: 1m3/h, ± 5% pressure: 10 ± 5Pa

5. Air flow velocity: 0.1m/s to 0.3m/s (continuously adjustable), accuracy ≤ 0.05m/s

6. Airtightness: The cabin door has self sealing properties. The sealing performance meets the following requirements:

① At a positive pressure of 1kPa (gauge pressure), the air leakage rate inside the cabin is less than 10-3 * 1M3/min;

② The difference in gas flow rate between import and export is less than 1%.

7. Inner box material: 304 mirror stainless steel plate seamlessly welded, with polished and deformation free welding joints and surroundings. The inner wall is flat and smooth, with uniform color, no exposed bottom, peeling, bubbling, or scratches.

8. Outer box material: A3 color steel plate electrostatic spraying, with a flat and smooth coating, uniform color, and no defects such as exposed bottom, peeling, bubbling, spots, deep scratches, etc. The cabin and door are effectively insulated with polyurethane and mineral wool double-layer sandwich insulation. The insulation layer thickness is not less than 50mm, and the thermal conductivity coefficient is not greater than 0.01W/(m · K). The overlap between the inner wall panels is seamless welded.

9. Air exchange device: A device capable of continuously controlling the air exchange rate (dry air flow meter, or other electronic air flow metering device) is installed inside the cabin. The air inlet and outlet should be located on different inner walls and at different heights to ensure that the air flow supplied to the cabin meets the corresponding standard requirements.

10. Air circulation (mixing) device: Install a fan inside the cabin to enhance air mixing inside the cabin; The air velocity near the surface of the specimen is adjustable between 0.1m/s and 0.3m/s.