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LI-COR offers a wide range of analyzers.
The table below can assist you in finding the right analyzer for your application.
For assistance in choosing an analyzer, contact LI-COR or your local distributor to discuss your application in more detail.
| Analyzer | Precision | Output Rates | Power Consumption |
 LI-7200CO2/ H2O Analyzer |
0.16 ppm* CO2 0.0067 ppt* H2O |
20 Hz RS-232 20 Hz Bandwidth Analog Voltage 40 Hz SDM |
12 W Typical 30 W Max |
LI-7500AOpen Path CO2/ H2O Analyzer |
0.16 ppm* CO2 0.0067 ppt* H2O |
20 Hz RS-232 20 Hz Bandwidth Analog Voltage 40 Hz SDM |
10 W Typical 30 W Max |
 LI-7000CO2/ H2O Analyzer |
0.157 ppm* CO2 0.011 ppt* H2O |
50 Hz RS-232 20 Hz Bandwidth Analog Voltage 50 Hz USB |
15 W Typical 40 W Max |
 LI-840CO2/H2O Analyzer |
< 1 ppm CO2 < 0.01 ppt H2O |
2 Hz RS-232 2 Hz Analog Voltage 2 Hz Current Loop |
3.6 W Typical 14 W Max |
 LI-820CO2 Analyzer |
< 1 ppm CO2 | 2 Hz RS-232 2 Hz Analog Voltage 2 Hz Current Loop |
3.6 W Typical 14 W Max |
*Typcial RMS Noise @ 20Hz Bandwidth.
LI-7000
CO2/H2O Analyzer
- Atmospheric Surface Flux
- Eddy Covariance and Gradient Techniques
- Plant Gas Exchange Using Chamber-Based Methods
- Vertical Profiling
- General Atmospheric Monitoring
- And Other Applications
LI-7200
CO2/H2O Analyzer
- Designed for Eddy Covariance
- Vertical Profiling
- General Atmospheric Monitoring
- PCO2 / DIC Monitoring
- And Other Applications
LI-7500A Open Path
CO2/H2O Analyzer
- Designed for Eddy Covariance
- Vertical Profiling
- General Atmospheric Monitoring
- And Other Applications
LI-840 CO2/H2O Analyzer
- Ambient Air Monitoring
- Growth Chambers
- Greenhouse Control Systems
- Industrial CO2/H2O Monitoring
- And Other Applications
LI-820 CO2 Analyzer
- Ambient Air Monitoring
- Growth Chambers
- Greenhouse Control Systems
- Industrial CO2 Monitoring
- And Other Applications
NEW! LI-7700A Open Path CH4 Analyzer
Designed for Remote Field Deployment and Eddy Covariance Measurements
Measuring pCO2 and Dissolved Inorganic Carbonates
LI-COR has published an Application Note that describes techniques and instrumentation for measuring the partial pressure of CO2 and total dissolved inorganic carbonates in water.
Download Application Note #128 
The LI-820 CO2 Analyzer has new software that now allows a continuous measurement range (0-20,000 ppm CO2) with only one optical path (14 cm).
Already own an LI-820? Click here to Upgrade!
An introductory course for researchers who wish to know more about Eddy Covariance and how to properly make these measurements.
Click here to view the presentation
LI-610 Portable Dew Point Generator
The LI-610 Portable Dew Point Generator is a rugged, portable instrument that provides a stream of gas with a precisely controlled dew point. High accuracy and stability make the LI-610 an ideal water vapor source for field or laboratory use in the environmental and biological sciences.
The LI-610 can be used to calibrate the H2O channel of gas analyzers
- NIST certified
- Generates stable dew points from 0 to 50 °C
- Accuracy of ± 0.2 °C dew point
- Completely portable and self-contained (battery or AC operated)
- No need for gas tanks and mixing systems
- Millivolt output of dew point temperature for data acquisition
- External control via 0-5 V input signal
Ordering Information
LI-7000 Closed Path CO2/H2O Analyzer
High precision and high speed analyzer. Includes External Battery Leads, Scrub Tube, AC Power Cord, Serial and USB Cables, Windows™ Software and Instruction Manual (Batteries and Battery Charger not included).
LI-7000DP Open Path CO2/H2O Analyzer Package Includes:- LI-7000 Closed Path CO2/H2O Analyzer
- LI-610 Portable Dew Point Generator
LI-7200 CO2/H2O Analyzer
Includes LI-7550 Analyzer Interface Unit, 1 m intake tube with insect screen, IRGA Cable (5 meters), Serial Cable and USB Adapter, DAC, Auxiliary Input, SDM (5 meters), Windows ® Software and Instruction Manual.
LI-7200DP CO2/H2O Analyzer Package:- LI-7200 CO2/H2O Analyzer
- LI-610 Portable Dew Point Generator
- LI-7200 CO2/H2O Analyzer
- LI-7200-101 Flow Module
- Seven auxiliary inputs (four general ±5 V for a sonic anemometer and three type E thermocouple channels).
- The LI-7550-101 provides a weather resistant terminal strip for connecting external sensors.
LI-7500 Open Path CO2/H2O Analyzer
High precision and high speed analyzer for Eddy Covariance measurements. Includes Calibration Shroud, IRGA Cable (3 meters), Serial Cable and USB Adapter, DAC, Auxiliary Input, SDM Cables (4 meters), Windows® Software and Instruction Manual.
LI-7500DP Open Path CO2/H2O Analyzer Package Includes:- LI-7500 Open Path CO2/H2O Analyzer
- LI-610 Portable Dew Point Generator.
LI-840 CO2/H2O Analyzer
Designed for continuous monitoring applications. It has a 0-3000 ppm CO2 Range and 0-80 ppt H2O Range. Includes two Disposable Air Filters, Cleaning Kit, Windows® Software, RS-232 Serial Cable, RS-232 to USB Adapter and Instruction Manual. Requires External Power Source (12 watts, 12-30 VDC). Pump not included.
LI-820 CO2 Analyzer
Designed for continuous monitoring applications. It has a 0-20,000 ppm CO2 Range. Includes two Disposable Air Filters, Cleaning Kit, Windows® Software, RS-232 Serial Cable, RS-232 to USB Adapter, and Instruction Manual. Requires External Power Source (12 watts,12-30 VDC). Pump not included.
LI-610 Portable Dew Point Generator
Used to calibrate H2O Analyzers and Relative Humidity Sensors. Includes 610-01 AC Module and one set of 610-04 BNC to mV Recorder Leads. Requires 6200B Rechargeable Battery and LI-6020 Battery Charger for battery powered operation.
