Gastec 71 메틸 메르 캅탄 CH3SH 빠른 측정 검지관 71 (0.25 ~ 140 ppm)

생산업체: Gastec
Model: 71
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사양
생산업체의 정보

Indicator: 5~70ppm
Measuring Range:
+ 0.25 to 2.5 ppm, Number of Pump Strokes 2 to 10
+ 2.5 to 70 ppm, Number of Pump Strokes 1
+ 70 to 140 ppm, Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Yellow
Reaction Principle: 2CH3SH + PdSO4 → (CH3S)2Pd + H2SO4
Coefficient of Variation: 10% (for 2.5 to 20 ppm), 5% (for 20 to 70 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Details

Performance

Measuring Range

0.25 to 2.5 ppm

2.5 to 70 ppm

70 to 140 ppm

Number of Pump Strokes

2 to 10

Correction Factor

1/2 to 1/10

Sampling Time

1.5 minutes per pump stroke

Detecting Limit

0.1 ppm (n=10)

Colour Change

White → Yellow

Reaction Principle

2CH3SH + PdSO4 → (CH3S)2Pd + H2SO4

Coefficient of Variation

10% (for 2.5 to 20 ppm), 5% (for 20 to 70 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

Acetylene, Ethylene	2000 ppm	No(two layers)	Pale brown (whole layer)
Carbon Monoxide	2000 ppm	No(two layers)	Pale brown ( whole layer)
Other Mercaptans		+	Yellow
Hydrogen sulphide	500 ppm	No	No