Temperature range

(15～40)℃

accuracy

±0.5℃

Humidity

(40～80)%RH

accuracy

±3%R.H

Air change rate

0.2m3～2m3/h(rate 0.2～2 time/h)

Inner Working Size

(1±0.02)m3

0.80m(W)×1.0m(H)×1.25m (L)

Outside test chamber dimension

2100(L)×1810(H)×1150 W

TVOC background conc shall be <0.006mg/m3, background of any single target VOC shall be<0.005mg/m3

The chamber will be used to test for construction materials. Designed as per the following standards:

ASTM D6007 (formaldehyde emission from wood products)
ASTM D5116 (TVOC emission)
ASTM D6330 (VOCs emission from wood-based panels)

Test chamber

Test chamber side is equipped with cable threading hole 1, size of ф 50 mm

Test chamber working chamber is made of 1 mm thick SUS304 stainless steel plate, case shell by 1 mm thick cold plate paint manufacturing

Workshop equipped with two layers of stainless steel bar shelf adjustable height

Cabinet is equipped with condensate drain

The door

Single door, door seal adopts double silicone rubber sealing strip

Door installed on a multilayer insulating glass observation window, size: 300 x 275 mm, and is equipped with heating frost prevention device. Test chamber door installed on a 20 w

4 Observation and lighting

The heating system

Continuous PID control, the use of ac contactor as heating actuator, safe and reliable, has a separate overtemperature protection system

Air duct system

In order to guarantee high evenness index, test chamber is equipped with internal circulation air supply system; Duct sandwich at the end of the studio, the distribution of the heater, refrigeration evaporator, blades, etc; Use fan to make the air circulation in the oven, when fan at high speed, the studio in lower suction air duct, after heating, cooling, blow out from the upper air duct, the sample (s) in the studio and heat transfer within the air inhaled air duct again after repeated circulation, so as to achieve the temperature set requirements.

Control system

Temperature measuring: Pt100 platinum resistance

Humidity measurements: Pt100 platinum resistance dry wet ball method

Control unit: programmable digital temperature controllers and humidity controllers TEMI880. Can display set parameters, time, heater, humidifier and other working condition, and has run test at the same time and PID parameters self-tuning function. It takes only a set temperature can achieve the function of refrigerating machine to run automatically. Control system using intelligent control software system, has automatic combined cooling, heating, humidification, etc. The operation condition of the subsystem, so as to ensure the high precision control of temperature and humidity in the whole range, to achieve the purpose of saving energy and reducing consumption. Perfect detection device can automatically, according to the detailed fault alarm, such as when the chamber when an exception occurs, the controller automatically according to fault state.

Screen display: set temperature and humidity; the measured temperature and humidity

setting precision: 1 ℃

operation modes: constant operation

Other main low voltage electrical components adopt famous brand products, such as Schneider ac contactor, thermal overload relay, OMRON small intermediate relay, delixi circuit breaker, Taiwan and all appropriate water level float switch, etc

Safety protection device

Studio overtemperature protection

Short circuit protection of the heater

Fan overload protection

Compressor overpressure protection

Compressor overload protection

Water/water protections

Earth leakage protection

Safe and reliable grounding device