The LI-7820 N2O/H2O Trace Gas Analyzer offers
high-precision nitrous oxide measurements in a low power,
N2O Measurements
Response Time (T10-T90): all from 0 to 330 ppb
≤ 2 seconds in Standard Configuration
≤ 3 seconds in High Altitude Configuration
Range: 0 to 100 ppm
Precision (1σ):
0.40 ppb at 330 ppb with 1 second averaging
0.20 ppb at 330 ppb with 5 second averaging
Maximum Drift: < 1 ppb per 24-hour period
H2O Measurements
Range: 0 to 60,000 ppm
Precision (1σ):
45 ppm at 10,000 ppm with 1 second averaging
20 ppm at 10,000 ppm with 5 second averaging
portable design—enabling it to easily integrate
into survey and long-term soil flux systems.
Pair it with the LI-7810 CH4/CO2/H2O Trace Gas Analyzer or
LI-870 CO2/H2O Analyzer for CO2 and CH4 measurements at your site.
A combination of several patented technologies with
Optical Feedback-Cavity Enhanced Absorption Spectroscopy
(OF-CEAS) results in precise and stable N2O measurements,
for chamber-based soil flux research.