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  • 产品名称:氟化氢气体检测管17 Hydrogen fluoride

  • 产品型号:17
  • 产品厂商:日本GASTEC
  • 产品文档:
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简单介绍:
氟化氢气体检测管17 Hydrogen fluoride,Measuring Range 0.25 to 0.5ppm 0.5 to 20 ppm 20 to 100 ppm Number of Pump Strokes 7 4 1 Correction Factor 1/2 1 5 Sampling
详情介绍:

 

氟化氢气体检测管17 Hydrogen fluoride
Hydrogen fluoride     No.17

HF

氟化氢气体检测管17 Hydrogen fluoride

Performance
 

MeasuringRange

0.25to 0.5ppm

0.5 to 20 ppm

20 to 100 ppm

Number of Pump Strokes

7

4

1

CorrectionFactor

1/2

1

5

SamplingTime

45 seconds per pumpstroke

DetectingLimit

0.1ppm (n=7)

ColorChange

Yellow → BrownishPink

ReactionPrinciple

Hydrogen fluoridereacts with indicator to produce brownish pink colour.
HF + Indicator → Chemical reaction compound

Coefficient ofVariation

10% (for 0.5 to 5ppm), 5% (for 5 to 20 ppm)

ShelfLife3Years
Correctionsfor
temperature & humidity
Humidity correction is necessary
Store the tubes at cool and darkplace.

Possible coexisting substances and theirinterferences(NOTE)


Substance

Concentration

Interference

Change color by itself

Hydrogen chloride,Nitric acid

1/5 time

Plus error

brownish pinkstain

Chlorine, Nitrogendioxide

1/10 time

Plus error

brownish pinkstain



Othersubstance measurable with this detector tube


Substance

CorrectionFactor

PumpStroke

Temperature

AbsoluteHumidity

ColorChange

Fluorine

2.5

1

20oC(68oF)

9 mg/l

Produces brownstain

1.0

1

20oC(68oF)

3mg/l



Calibration gasgenerationPermeation tubemethod



TLV-TWATLV-STELExplosive range
-C3ppm-
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