Gastec 17L 快速氟化氢测量探测管HF(0.09~72ppm)

Indicator: 0.2 to 10 ppm
Measuring Range: 
+ 0.09 to 0.2 ppm, Number of Pump Strokes 5
+ 0.2 to 10 ppm, Number of Pump Strokes 3
+ 10 to 72 ppm, Number of Pump Strokes 1
Sampling Time: 1 minute per pump stroke
Colour Change: Yellow → Brown
Coefficient of Variation: 10% (0.2 to 2 ppm), 5% (2 to 10 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.09 to 0.2 ppm 0.2 to 10 ppm 10 to 72 ppm
Number of Pump Strokes
5 3 1
Correction Factor
0.45 1 7.2
Sampling Time 1 minute per pump stroke
Detecting Limit 0.05 ppm (n=5)
Colour Change Yellow → Brown
Reaction Principle Hydrogen fluoride reacts with indicator to produce reddish brown stain.
Coefficient of Variation 10% (for 0.2 to 2 ppm), 5% (for 2 to 10 ppm)
Shelf Life 2 Years
Corrections for temperature & humidity Humidity 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
Nitric acid ≧ 1/5 + Reddish purple
Hydrogen chloride ≧ 1/2 + Reddish purple
Nitrogen dioxide   No No
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
0.5ppm C2 ppm -

 

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