描述
Product Application
The formaldehyde testing 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.
Specification
Inner volume
(1.0±0.02)m³
Test temperature range
(10—40)℃, accuracy:±0.5℃, Resolution 0.1℃, Adjustable
test humidity adjustable range
(30—80)%, accuracy:±3%, Resolution 0.1%, Adjustable
Air exchange
(0.1—2)m/s, accuracy:±0.05 m/s, Adjustable
Air speed
(0.2—2)m³/h, accuracy: ±5%, Adjustable
Leakproofness
1KPa relative pressure, leakage rate<10-3×1m³/min, import and export air differ<1%
background levels
formaldehyde≤0.006mg/m³
Adiabaticity
The wall and door of the climate box is effectively thermal insulation
Noise
less than 60dB
Continuous working hours
not less than 40 days
monitoring parameter
Monitoring the temperature and humidity, air discharge, switching time, working time, data can be transferred and stored
Method of controlling humidity
The dew point control method is adopted to control the relative humidity, the humidity is stable, and the fluctuation range <3%.rh. no water appear on the inside
Out dimension (W*D*H)
1630 x 1200 x 1850mm
Standards:
Implementation Standard:
ASTMD6007—02: standard test method for determination of formaldehyde concentration in wood products by small scale environment box
ENV717—1: formaldehyde emission measurement environment box method of artificial board
EN13419-1: the method for determining the release of VOCs for building products in the first part of the test environment box
Reference standard:
ASTMD5116-97: standard guide for the determination of organic release of indoor materials and products in small scale environment boxes
ASTMD6330-98: “standard operation for the determination of VOCs (deformaldehyde-formaldehyde) release in wooden panel under test conditions”
ASTMD6670-01: standard operation for measuring the release of indoor materials and VOCs in a full-scale environment box
ASTME1333—96: standard test method for determination of formaldehyde concentration and release rate in wood products by large environment box
Working Principle
Put sample of 1 square meter area into the temperature chamber which controlled control in a certain value of temperature, relative humidity, air velocity. The formaldehyde released from samples, mixed with the air in the cabinet, regular extraction in the air, and the air will be drawn through the absorption bottle is filled with distilled water, all the formaldehyde in air dissolve in the water; Measure the amount of formaldehyde in the absorption solution and extraction of air volume, and show it by micrograms per cubic meter (mg/m after), calculate the amount of formaldehyde in per cubic meter of air. Sampling is cyclical, until the test the formaldehyde concentration in the oven to reach equilibrium.
