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  • 产品名称:硫化氢气体检测仪 4LT H2S

  • 产品型号:4LT
  • 产品厂商:日本GASTEC
  • 产品文档:
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简单介绍:
硫化氢气体检测仪 4LT H2S,Measuring Range 0.1 to 0.2 ppm 0.2 to 2.0 ppm 2.0 to 4.0 ppm Number of Pump Strokes 2 1 1/2 Correction Factor 1/2 1 2 Sampling Time 1 minute per pump stroke
详情介绍:

 

硫化氢气体检测仪 4LT H2S
Hydrogen sulphide   No.4LT

H2S

硫化氢气体检测仪 4LT H2S

Performance
 

MeasuringRange

0.1 to 0.2 ppm

0.2 to 2.0 ppm

2.0 to 4.0 ppm

Number of Pump Strokes

2

1

1/2

CorrectionFactor

1/2

1

2

SamplingTime

1 minute per pumpstroke

DetectingLimit

0.05 ppm (n=2)

ColorChange

Pale Yellow → ReddishBrown

ReactionPrinciple

H2S + HgCl2 → HSHgCl + HCl
HCl + Base → Chloride

Coefficient ofVariation

10% (for 0.2 to 0.5ppm), 5% (for 0.5 to 2 ppm)

ShelfLife2Years
Correctionsfor
temperature & humidity
Temperature correction is necessary
Store the tubes inthe refrigerator to keep at 10oC (50oF) orbelow.

Possible coexisting substances and theirinterferences(NOTE)


Substance

Concentration

Interference

Change color by itself

Ammonia

-

No effect

Nodiscoloration

Sulfurdioxide

-

No effect

Nodiscoloration

Nitrogendioxide

-

No effect

Nodiscoloration

Mercaptans

1/10 time

Plus error

Produce reddish browncolor

Methylsulfide

-

No effect

Nodiscoloration



Othersubstance measurable with this detector tube


 
Calibration gasgenerationPermeation tube method


 


TLV-TWATLV-STELExplosive range
10ppm15ppm4.0to 44%
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