检测认证人脉交流通讯录
- 硫化氢检测管4D H2S Hydrogen sulphide，Measuring Range 0.2 to 200 ppm Sampling Hours 1 to 48 hours Detecting Limit 0.2 ppm (10 hours) Color Change硫化氢检测管价格
硫化氢检测管4D H2S Hydrogen sulphide的详细介绍
硫化氢检测管4D H2S Hydrogen sulphide Hydrogen sulphide No.4D
H2S
Performance
Measuring Range
0.2 to 200 ppm
Sampling Hours
1 to 48 hours
Detecting Limit
0.2 ppm (10hours)
Color Change
White→ Brown
Reaction Principle
H2S + Pb(CH3COO)2 → PbS +2CH3COOH
Coefficient ofVariation 10%(for 10 to 200 ppm-hr)
ShelfLife 3 Year
Correctionsfor
temperature & humidity Unnecessary
Store the tubes atcool and dark place.
Possible coexisting substances and theirinterferences (NOTE)
Substance
Concentration
Interference
Change color by itself
Nitrogendioxide
5 ppm -
No
Ammonia 25 ppm
No
No
Chlorine 1 ppm
No
No
sulphur dioxide 5 ppm
No
No
Calibration gasgeneration Diffusion tubemethod
TLV-TWA TLV-STEL Explosive range
10 ppm 15 ppm 4.0to 44%
