Gastec 3La 气体检测管氨NH3(2.5~200ppm)

Indicator: 5 to 100 ppm
Measuring Range: 
+ 2.5 to 5 ppm, Number of Pump Strokes 2
+ 5 to 100 ppm, Number of Pump Strokes 1
+ 100 to 200 ppm, Number of Pump Strokes 1/2
Sampling Time:  30 seconds per pump stroke
Colour Change: Purple → Yellow
Reaction Principle: 3NH3 + H3PO4 → (NH4)3PO4
Coefficient of Variation: 10% (for 5 to 20 ppm), 5% (for 20 to 100 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
2.5 to 5 ppm 5 to 100 ppm 100 to 200 ppm
Number of Pump Strokes
2 1 1/2
Correction Factor
1/2 1 2
Sampling Time 30 seconds per pump stroke
Detecting Limit 0.5 ppm (n=2)
Colour Change Purple → Yellow
Reaction Principle 3NH3 + H3PO4 → (NH4)3PO4
Coefficient of Variation 10% (for 5 to 20 ppm), 5% (for 20 to 100 ppm)
Shelf Life 3 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
Carbon dioxide 1% No
Hydrazine   + Yellow
Amines 1/15 + Yellow (5 ppm)
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
25 ppm (2014) 35 ppm (2014) 15 to 28%

 

  • 质量承诺
  • 正品保修
  • 送货到家
  • 交易简单化