NAGCO Water Vapor (Pipeline) H2O Detector Tubes 2-10 lbs/MMCF | N10-120-10

The NAGCO N10-120-10 Water Vapor (Pipeline) H2O Detector Tubes are designed for direct-reading measurement of water vapor in pipeline and natural gas applications. The standard measurement range is 2–10 lbs/MMCF H2O using two pump strokes and a total sample volume of 200 mL.

For applications requiring measurements outside the standard range, the N10-120-10 can also measure 1–5 lbs/MMCF using four pump strokes or 4–20 lbs/MMCF using one pump stroke with the appropriate correction factor.

Key Features

• Designed for water vapor (H2O) measurement in pipeline and natural gas applications
• Standard measurement range: 2–10 lbs/MMCF
• Extended measurement ranges: 1–5 lbs/MMCF and 4–20 lbs/MMCF
• Direct-reading colorimetric detector tube
• Standard measurement uses 2 pump strokes / 200 mL total sample volume
• Separate sampling times specified for air and natural gas
• Precision: ≤ ±12% Relative Standard Deviation
• Temperature range: 0–40°C (32–104°F)
• Yellow to green color change
• 2-year storage life under specified storage conditions
• No electrical power required

Specifications

• Manufacturer: NAGCO
• Part Number: N10-120-10
• Target: Water Vapor (H2O)
• Application: Pipeline / Natural Gas
• Measurement Units: lbs/MMCF
• Standard Range: 2–10 lbs/MMCF
• Extended Ranges: 1–5 lbs/MMCF / 4–20 lbs/MMCF
• Standard Pump Strokes: 2
• Standard Sample Volume: 200 mL
• Standard Sample Time in Air: 2 × 1.5 minutes
• Standard Sample Time in Natural Gas: 2 × 45 seconds
• Standard Correction Factor: 1.0
• Precision: ≤ ±12% Relative Standard Deviation
• Linearity: r² = 0.99
• Temperature Range: 0–40°C (32–104°F)
• Color Change: Yellow → Green
• Storage Life: 2 years in darkness at 5–25°C (40–77°F); refrigeration preferred

Measurement Ranges

• 1–5 lbs/MMCF: 4 pump strokes / 400 mL / 4 × 1.5 minutes in air or 4 × 45 seconds in natural gas / correction factor 0.51
• 2–10 lbs/MMCF: 2 pump strokes / 200 mL / 2 × 1.5 minutes in air or 2 × 45 seconds in natural gas / correction factor 1.0
• 4–20 lbs/MMCF: 1 pump stroke / 100 mL / 1.5 minutes in air or 45 seconds in natural gas / correction factor 2.22

Temperature Correction

• 0°C (32°F): Correction factor 1.1
• 10°C (50°F): Correction factor 1.0
• 23°C (73°F): Correction factor 1.0
• 40°C (104°F): Correction factor 0.9

Cross-Sensitivity & Interferences

NAGCO documents cross-sensitivity testing with methane, propane, isobutylene, hexanes, carbon monoxide, carbon dioxide, sulfur dioxide, hydrogen sulfide, ammonia, hydrogen chloride, ethylene glycol, triethylene glycol, methanol and toluene. Under the specified test conditions, certain compounds produced apparent readings or other effects. NAGCO also identifies amines and alcohols as possible interferences. Refer to the NAGCO datasheet for complete concentrations, apparent readings and interference information.

Pump Information

NAGCO recommends using NAGCO detector tubes with NAGCO sampling pumps. CPS Calibrations can assist customers transitioning from another detector tube system with selecting the appropriate NAGCO tube and sampling equipment for their application.

Important: Sampling time differs when measuring in air versus natural gas. Always use the appropriate sampling time and correction factor for the application and follow the NAGCO datasheet and pump operating instructions.

View NAGCO N10-120-10 Water Vapor Pipeline Detector Tube Datasheet (PDF)