Gastec 76 便携式气体检测管四氢噻吩检测管C4H8S（1~10 ppm）

制造商: Gastec
Model: 76
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技术规格
制造商消息

Indicator: 1 to 10 ppm
Measuring Range: 1 to 10 ppm, Number of Pump Strokes 4
Sampling Time: 1 minute per pump stroke
Colour Change: Pink → Pale Yellow
Reaction Principle: C4H8S + MnO4 (Pink) → Pale Yellow Product
Coefficient of Variation: 10% (for 1 to 3 ppm), 5% (for 3 to 10 ppm)
Nr. of tests: 5
Pump: GV-100S/110S

Details

Performance

Measuring Range	1 to 10 ppm
Number of Pump Strokes	4
Correction Factor	1
Sampling Time	1 minute per pump stroke
Detecting Limit	0.25 ppm (n=4)
Colour Change	Pink → Pale Yellow
Reaction Principle	C4H8S + MnO4 (Pink) → Pale Yellow Product
Coefficient of Variation	10% (for 1 to 3 ppm), 5% (for 3 to 10 ppm)
Shelf Life	2 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

Ethyl mercaptan	1 ppm	No	Pale pink (whole layer)
Ethylene	1000 ppm	No	Pale pink (whole layer)
Propylene	500 ppm	No	Pale pink (whole layer)
Methanol	300 ppm	No	Pale pink (whole layer)
Hydrogen sulphide	30 ppm	No	Pale pink (whole layer)