PCE รุ่น HFX-205 เครื่องวัดคุณภาพอากาศสำหรับก๊าซฟอร์มาลดีไฮด์,Air quality formaldehyde gas meter

Technical data of Formaldehyde Air Quality Meter

Measuring range

0…10 ppm

Resolution

0.01 ppm

Accuracy 

< ± 2%

Reaction time

< 30 seconds

Data storage

Up to 500 datasets

Operation temperature

5 ... 40°C / 41 ... 104°F

Power Supply

Li-ion battery (3.7 V/1200-mAh)AC-adapter 100 ... 240V to 5 VDC / 1 A

Operation time

6 hrs. with batteries

Dimensions

80 x 36 x 150 mm / 3.1 x 1.4 x 5.9 in

Weight

Approx. 200g / 7.9 lb

Formaldehyde

Formaldehyde is a colourless, pungent-smelling substance, which is gaseous at room temperature.An improper use can result in allergies, skin and respiratory diseases or eye irritation. It is classified as carcinogenic. In areas of textiles, the voluntary measurement of limits for harmful substances is awarded a seal of approval (e.g. Toxproof or Öko-Tex 100) is by 20 mg/kg (20ppm). In addition, formaldehyde can especially be found in the following materials: wooden materials, furniture, chip boards and groundings.

Interference with measuring rate of formaldehyde

Chemical

Formaldehyde equivalent

100 ppm methanol

1 ppm

100 ppm ethanol

1 ppm

100 ppm isopropanol

0.5 ppm

100 ppm CO

1 ppm

25 ppm phenol

0.05 ppm

100 ppm acetaldehyde

0.5 ppm

100 ppm hydrogen

3 ppm

50 ppm hydrogen sulphide

0.5 ppm

50 ppm sulphur dioxide

0.5 ppm