Formaldehyde Testing Chamber / Climate Test Chamber High Accuracy
Machine Introduction:
Formaldehyde Test Chamber is used to test formaldehyde emission of various wood-based panel, composite wood flooring, carpet, carpet padding, and other interior decoration materials, also other building materials under constant temperature humidity.
Executive standard:
GB18580—2001
GB18584—2001
GB18587—2001
GB17657—2013
ASTM D6007—02
Working principle:
The temperature, relative humidity, air velocity and air displacement rate of the sample with 1 square meter surface area are controlled in the climatic box with a certain value.Formaldehyde is released from the sample and mixed with the air in the box. The air in the box is extracted regularly. The extracted air is passed through the absorption bottle containing distilled water, and all the formaldehyde in the air is dissolved into the water.Determine the amount of formaldehyde in the absorption solution and the volume of air extracted, expressed in milligrams per cubic meter (mg/m), calculate the amount of formaldehyde per cubic meter of air.The sampling is periodic until the formaldehyde concentration in the test chamber reaches an equilibrium.
Features:
Standard Parameters:
Power supply | 220V, 50Hz |
Ambient temperature | 15-35℃ |
Ambient humidity | 5% -- 95%RH |
Volume | (1.0±0.02) m3 |
The temperature in the test chamber | It can be adjusted in the range of (10-40) ℃, with the precision of ±0.5℃ and the resolution of 0.1℃, continuously adjustable |
Adjustable range of relative humidity in the box | (30-80) %, accuracy ±3%, resolution 0.1%, continuous adjustable |
Air flow rate in the box | (0.1 -- 2) m/s, the precision is ±0.05 m/s, continuously adjustable |
Air displacement rate | (0.5 -- 2) m3/h, accuracy is ±5%, continuously adjustable |
Sealing | when there is 1000Pa overpressure, the gas leakage is less than 10-3×1m3/min, and the gas flow difference between inlet and outlet is less than 1% |
Background concentration in the test chamber | formaldehyde ≤0.006mg/m3 |
Insulation | the climate box wall and door should have effective thermal insulation, |
Noise | the noise value of the climate box is no more than 60dB |
Continuous working time | the continuous working time of climate box shall not be less than 28 days |
Materials | the inner box of the climate box is made of inert material, the inner surface of the wall is smooth, the stainless steel plate, no formaldehyde is produced or absorbed |
Monitoring equipment | the touch control screen is used as the dialog interface for personnel to operate the equipment, which can directly set and digital display box temperature, relative humidity, air exchange rate, air velocity value, the original imported sensor, and can automatically record and draw the control curve, flow data display. |
Monitoring parameters | the monitoring shows the temperature and humidity in the cabin, air supply and exhaust volume, switching time and working time, and the data can be transferred and stored |
Refrigeration system | original imported refrigeration compressor (aspala) |
Humidity control method | the dew point humidity control method is adopted to control the relative humidity of the working cabin. The humidity is stable and the fluctuation range is less than 3%. Rh |
Dimensions | 1200*1650*1850mm |
Gas sampling device | 2.1 |
The extraction speed of sampler | (0.25 -- 2.5)L/min, and the adjustment accuracy is ±5% |
Sampling time | any setting within 99 hours |
Configuration | sampling tube, absorption bottle, gas sampling pump, gas flow meter, etc |
Configuration list:
1.Standard: computer, sampling tube, absorption bottle, gas sampler;
2.Optional: spectrophotometer, water bath, medicament, glass apparatus, standard solution, Balance.