LI-COR LI-7815 Trace Gas Analyzer Philippines

Trace Gas Analyzers

LI-7815

Grounded in Science, Designed for Research

From idea to understanding, LI-COR has your soil gas flux research covered. No other solution is as flexible or delivers the same level of proven hardware, gas analyzers, and advanced data analysis software.

Grounded in Science, Designed for Research

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LI-COR LI-7815 Trace Gas Analyzer Philippines

High precision CO₂ monitoring

The LI-COR LI-7815 CO₂/H₂O Trace Gas Analyzer provides exceptionally stable and precise measurements for long-term atmospheric monitoring measurements. CO₂ measurements drift less than 0.2 ppm per 24-hour period with 0.04 ppm precision (1σ, with 5-second averaging) at 400 ppm CO₂ in dry air at STP.

Exceptionally stable and precise measurements

The LI-7815 CO₂/H₂O Gas Analyzer provides stable and precise CO₂ measurements in a rugged, portable, and cost-effective design.

LI-7815 Long-Term Outdoor CO₂ Stability

Thirty-day CO₂ stability data from an LI-7815 CO₂/H₂O analyzer. A single instrument was operated outdoors continuously over the entire time period, measuring 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%).

LI-7815 24-Hour CO₂ Precision with Allan Deviation Plot

LI-7815 24-Hour CO2 Precision with Allan Deviation Plot — **Figure 2. 24-hour CO₂ stability data from an LI-7815 CO₂/H₂O analyzer (top).** The instrument was operated continuously over a 24-hour period with a continuous flow of tank gas. The blue line shows 1-second measurements; the diamond line shows a 50-minute block average. Allan deviation plot (bottom) of CO₂ measurements from an LI-7815 measuring 402.3 ppm CO₂ shows precision at 1-second signal averaging, with improved precision as averaging time increases. Error bars represent 68% (±1σ) confidence intervals based on number of averaged time series available at each τ.

Key specifications

General

Total Weight: 10.5 kg (including batteries)
Battery Life: 8 hours typical with 2 batteries

CO₂ Measurements

Response Time (T₁₀-T₉₀): all from 0 to 400 ppm
- ≤ 2 seconds in Standard Configuration
- ≤ 3 seconds in High Altitude Configuration
Range: 0 to 10,000 ppm
Precision (1σ):
- 0.10 ppm at 400 ppm with 1 second averaging
- 0.04 ppm at 400 ppm with 5 second averaging
Maximum Drift: < 0.2 ppm per 24-hour period

See the full LI-7815 specs

Applications

The LI-7815 Trace Gas Analyzer can be used for, but is not limited to, the following applications:

Atmospheric monitoring
Urban emissions monitoring
Mobile emissions monitoring
pCO₂
Sensor networks
Large area emissions monitoring
Fugitive emissions

LI-7815 CO2_H2O Trace Gas Analyzer Philippines

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Brochure

Trace Gas Analyzers

Field guide to instruments for the earth sciences

Posters

Development of Trace Carbon Dioxide Isotopologue Analyzer – Performance Evaluation Study

Long-Term Atmospheric Monitoring of Background CH₄ and CO₂ at Mace Head Atmospheric Research Station, Ireland Using LI-COR LI-7810 and LI-7815 Trace Gas Analyzers

How do soil temperature and moisture regulate N₂O flux from an urban lawn?

Measuring Very Small Soil Fluxes of N₂O & CH₄ Using a New OF-CEAS Technology

Development of Trace Methane and Trace Carbon Dioxide Analyzers – Performance Evaluation Studies, GCWerks Integration, and Results of Field Deployment