Gastec 70 快速硫醇测量探测管R-SH(0.5-120ppm)

Indicator: 5 to 120 ppm
Measuring Range: 
+ 0.5 to 5 ppm, Number of Pump Strokes 2 to 10
+ 5 to 120 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Yellow
Reaction Principle: 2RSH+ PdSO4 → (RS)2Pd+ H2SO4
Coefficient of Variation: 10% (for 5 to 40 ppm), 5% (for 40 to 120 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.5 to 5 ppm 5 to 120 ppm
Number of Pump Strokes
2 to 10 1
Correction Factor
1/2 to 1/10 1
Sampling Time 1.5 minutes per pump stroke
Detecting Limit 0.2 ppm (n=10)
Colour Change White → Yellow
Reaction Principle 2RSH+ PdSO4 → (RS)2Pd+ H2SO4
Coefficient of Variation 10% (for 5 to 40 ppm), 5% (for 40 to 120 ppm)
Shelf Life 3 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Carbon monoxide 2000 ppm + Pale brown (whole layer)
Hydrogen sulphide 500 ppm + No
Acetylene, Ethylene 2000 ppm + Pale brown (whole layer)
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Ethyl mercaptan 1.0 1 to 10 0.5 to 120 ppm
Isopropyl mercaptan 2.0 1 10 to 240 ppm
Methyl mercaptan 0.7 1 to 10 0.35 to 84 ppm
Propyl mercaptan 4.5 1 22.5 to 540 ppm
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
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