Gastec รหัสสินค้า No.11S หลอดวัดความเข้มข้นของแก๊ส,Detector Tube for Nitrogen oxides,Meas.range:5～625ppm,Quantity:10pcs/Box

Nitrogen Oxides Detection Tubes (5 to 625 ppm)Gastec Detection Tube No. 11S measures Nitrogen Oxides with a Range of 5 to 625 ppm.

• Measuring Range:
  • 5 to 10 ppm
  • (10) to 250 ppm
  • 250 to 625 ppm
• Number of Pump Strokes: 2, 1, 1/2
• Correction Factor: 1/2, 1, 2.5
• Sampling Time: 45 seconds per pump stroke
• Detecting Limit: 2 ppm (2 pump strokes)
• Changes from White to Pale Green
• Corrections for temperature & humidity: Unnecessary
• Reaction Principle:
  • NO + Cr6+ + H2SO4 → NO2
  • NO2 + (C6H5)2NH → C6H5NHC6H4NO
• Relative Standard Deviation: 10% (for 10 to 80 ppm), 5% (for 80 to 250 ppm)
• 2 Year Shelf Life
• Store the tubes at cool and dark place.

• On-site measurements can be performed easily by anybody, anytime and anywhere, in a short time
• Easy-to-check direct reading possible due to calibrated scale directly printed on the tube
• An extensive measuring range can be obtained by adjusting the sampling volume
• In order to assure high precision, each production lot is tested and calibrated independently, Each detector tube has its own quality control number printed on the tube
• Long shelf-life with excellent long-term stability