Gastec 4LB 快速硫化氢测量探测管H2S（0.5-12ppm）

制造商: Gastec
Model: 4LB
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技术规格
制造商消息

Indicator: 1 to 6 ppm
Measuring Range:
+ 0.5 to 1 ppm, Number of Pump Strokes 2
+ 1 to 6 ppm, Number of Pump Strokes 1
+ 6 to 12 ppm, Number of Pump Strokes 1/2
Sampling Time: 1 minutes per pump stroke
Colour Change: Yellow → Pink
Coefficient of Variation: 5% (for 1 to 6 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Details

Performance

Measuring Range

0.5 to 1 ppm

1 to 6 ppm

6 to 12 ppm

Number of Pump Strokes

Correction Factor

Sampling Time

1 minute per pump stroke

Detecting Limit

0.07 ppm (n=2)

Colour Change

Yellow → Pink

Reaction Principle

Hydrogen Sulphide reacts with the reagent to form intermediate material which stains indicator pink

Coefficient of Variation

5% (for 1 to 6 ppm)

Shelf Life

2 Years

Corrections for temperature & humidity

Unnecessary

Possible coexisting substances and their interferences (NOTE)

Substance

Concentration

Interference

Change colour by itself to

Ammonia	2.3 ppm		No discolouration
Ethyl Mercaptan	0.5 ppm	+	Pink at 0.4 ppm
Hydrogen Chloride	4.5 ppm	+	Pink at 4.0 ppm
Hydrogen Cyanide	0.1 ppm	+	Pink at 0.1 ppm
Nitric Acid	6.0 ppm	+	Pink at 5.0 ppm
Sulphur Dioxide	1.0 ppm	+	Pale pink at 0.7 ppm
Nitrogen Dioxide	3.5 ppm		Pink at 8.0 ppm
Hydrogen Fluoride	13.0 ppm	+	Pink at 10.0 ppm