Gastec รหัสสินค้า No.140 หลอดวัดความเข้มข้นของแก๊ส,Detector Tube for Alipha,Meas.range:6～3000ppm,(10pcs/Box)

Aliphatic Hydrocarbons Detection Tubes (140 - 6 to 3000 ppm)Gastec Detector Tube No 140 is used for the detection of Aliphatic Hydrocarbons within the measuring range of 6-3000 ppm.

Measuring Range:

• 6 to 20 ppm - 2 pump strokes - Correction Factor of 0.3
• 20 to 1000 ppm - 1 pump stroke - Correction Factor of 1
• 1000 to 3000 ppm - 1/2 pump stroke - Correction Factor of 3
• Sampling Time: 2 minutes per pump stroke
• Detecting limit: 1 ppm (2 pump strokes)
• Changes from Yellow to Blackish brown
• Corrections for temperature & humidity: Temperature correction is necessary
• Relative Standard Deviation: 10% (for 20 to 1000 ppm)
• 2 Year Shelf Life
• Reaction Principle:
  • Aliphatic Hydrocarbons + Cr6+ + H2SO4 → Cr3+
• Store the tubes at a 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