Leak Detection and Repair (LDAR)
Gas Analyzer
LI-7810 CH4/CO2/H2O Trace Gas Analyzer
The LI-7810 measures methane in air with high precision and stability
The LI-7810 measures methane in air with high precision and stability. It is designed for atmospheric monitoring in the field or laboratory. It also measures CO2 and water vapor.
Manufactured byLI-COR Environmental
Overview
About LI-7810 CH4/CO2/H2O Trace Gas Analyzer
The LI-COR LI-7810 CH4/CO2/H2O Trace Gas Analyzer provides very stable and precise methane measurements in a design that is both portable and affordable. CH4 measurements drift less than 1 ppb per 24-hour period with 0.25 ppb precision (1σ, with 5-second averaging) at 2000 ppb CH4 in dry air at ambient temperature and pressure.
When methane matters the most, the LI-7810 provides CH4 measurements with high precision and stability and good CO2 and H2O measurements.
Figure 1. Thirty-day methane stability data from an LI-7810 CH4/CO2/H2O analyzer deployed in an enclosed shelter at an outdoor monitoring site in Lincoln, Nebraska. The instrument was operated continuously over the entire time period. The analyzer measured ambient air between stability checks. During stability checks, the analyzer was flushed for 10 minutes with tank gas (2 ppm CH4, 400 ppm CO2 mixed in air balance, 1% nominal concentration accuracy) and a time series data set was subsequently recorded for 10 minutes every 12 hours. The figure shows the mean value of the 10-minute measurements. Error bars represent a 1σ confidence interval (68%).
Key Features
Why choose LI-7810 CH4/CO2/H2O Trace Gas Analyzer
Site inspection and fenceline monitoring
Wetlands and agricultural emissions monitoring
Response Time (T10-T90): all from 0 to 2 ppm
≤ 2 seconds in Standard Configuration
≤ 3 seconds in High Altitude Configuration
Works With
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