Test principle

• Air is compressed by air compressor, and the solid particles, formaldehyde, volatile organic compounds in the air are removed. Then the purified air is released into the test chamber.
• The climate box adopts a jacket. The temperature of the test chamber is indirectly adjusted through controlling the temperature of jacket.
• Dew point method is applied to adjust humidity of the climate chamber and humidity inside the test chamber. The method is simple and effective.

Technical parameters
Model: V-1000A, V-1000B, V-2000
Environment temperature: 5℃～35℃
Environment humidity: ≤90%R.H
Environmental cleanliness requirements: There is no pollution source in the surrounding environment. TVOC≤500ug/m³;

Climate chamber volume (mm)：D1580*W800*H800, D900*W1000*H1100, D910*W2000*H1100.
Temperature adjustable range: 20℃～100℃ High temperature cleaning 250℃ or above
Humidity adjustable range: 40~70%R.H.(20~30 ) ℃, when it is in line with ADA276, humidity is 5% 65℃
Pressure: 10±5pa

Temperature fluctuation:0.3℃
Temperature deviation: ±0.5℃
Humidity fluctuation: ±2.5%R.H

Humidity deviation: ±3%
Air exchange rate: 0.2～5time/h±5%(Optional exchange rate specifications)
power supply: AC 380V / 50Hz / 3-phase power supply 5-wire system
Start power: 25kw, 25kw, 30kw
Running power: 12kw, 12kw, 13kw

VOC background concentration: Single VOC concentration less than 2ug / m³ ; TVOC concentration less than 20ug / m³
Recovery rate: The recovery rate of toluene, dodecane or tetradecane is more than 80%
Clean air system: Standard configuration

Technical advantage
The coated stainless steel inner wall improves the adsorption capacity of VOC substances with high boiling point and polar compounds. The recovery of tetradecane, 4 phenyl cyclohexene is more than 80%.

The patent is about how to deal with the connection surface between VOC emission chamber and the testing object. The technology helps to reduce the surface adhesive force, largely reducing VOC’s adhesiveness on chamber’s interior wall. In this way, the testing result of samples stored in the sampling bag is more close to the result of testing object in chamber, and the testing precision of emission chamber is largely improved.

Standards
GB18580-2001 Formaldehyde emission in wood-based panel and relevant products;
GB18584-2001 Limit to harmful substances of interior decoration materials wood furniture;
GB18587-2001 Release limits to harmful substances of interior decoration materials carpets, carpet linings and carpet adhesives;
ASTM D6007-02 Standard test method of small size environmental test chamber for formaldehyde concentration in wood products release gas;
ENV717-1 Environmental test chamber for wood-based panel formaldehyde emission;
EN13419-1 Environmental test chamber for VOCs released from construction products - Part one Method for release test of environmental test chamber;

HJ 571-2010 Technical requirement for environmental labeling products - Wood based panels and finishing products
HJ 566-2010 Technical requirement for environmental labeling products wooden toys
ISO12219-4

VDA-276
Standards for reference
• ASTM D5116-97
• ASTM D6330-98
• ASTM D6670-01
• ASTM E1333-96