Water Vapor (H2O) Gas Detector Tubes | Standard Range: 2-10lbs/MMCF | N10-120-10

NAGCO Water Vapor (Pipeline) H₂O detector tubes are designed for measuring water vapor concentrations in natural gas and pipeline applications using NAGCO pumps and tubes. The tubes provide three measurement ranges for flexibility across different moisture concentrations.

Specifications:

• Standard Range: 2–10 lbs/MMCF
• Extended Range: 1–5 lbs/MMCF
• Extended Range: 4–20 lbs/MMCF
• Number of Pump Strokes (Standard Range): 2
• Sample Volume (Standard Range): 200 mL
• Sample Time in Air (Standard Range): 2 × 1.5 minutes
• Sample Time in Natural Gas (Standard Range): 2 × 45 seconds
• Correction Factor (Standard Range): 1
• Precision (Relative Standard Deviation): ≤ ±12%
• Linearity with Number of Pump Strokes: r² = 0.99
• Temperature Range: 0–40°C (32–104°F)
• Temperature Correction Factor: 1.1 at 0°C/32°F; 1.0 at 10°C/50°F and 23°C/73°F; 0.9 at 40°C/104°F
• Storage Life: 2 years in darkness at 5–25°C (40–77°F); refrigeration preferred
• Color Change: Yellow → Green
• Part Number: N10-120-10

These tubes are designed specifically for measuring water vapor in natural gas. When sampling natural gas, the standard range uses 2 pump strokes with a 200 mL sample volume and a 45-second sampling time per stroke.

Cross-Sensitivity: The datasheet reports no apparent response to methane, isobutylene, hexanes, carbon monoxide, carbon dioxide, sulfur dioxide, hydrogen chloride, ethylene glycol, or triethylene glycol under the listed test conditions. Propane, hydrogen sulfide, and toluene may produce low apparent readings, while ammonia can affect the entire tube. Methanol may produce a light green stain above 70 ppm.

Important: Other possible interferences include amines and alcohols. The datasheet reports no response to heptanes and octanes as present in “rich” natural gas, commonly called condensate.

Datasheet