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LI-7815 high-precision CO2/H2O analyzer
LI-7815 high-precision CO2/H2O analyzer
Product details
LI-7815 is a new generation high-performance, portable trace gas analyzer launched by LI-COR. Adopting the principle of optical feedback cavity enhanced absorption spectroscopy (OF-CEAS), it provides a new dimension for trace gas measurement and monitoring with high accuracy, stability, durability, and calibration free. LI-7815 is for measuring CO2/H2O's high-precision analyzer.
application area
>LI-7815 and LI-COR's 8200-01S Smart Chamber connection can measure soil CO2gas flux
>Installing this analyzer on the monitoring tower can expand the monitoring capability of gas concentration in research areas such as cities
>Connecting the flask on the analyzer for measuring the respiration of fruits or small animals
>CO2 monitoring of atmospheric, urban emissions, mobile emissions, non-point source emissions, short-term emissions, etc
>pCO2
main features
strong stability
The drift of 24-hour CO2 measurement shall not exceed 0.2 μ mol/mol.
Simple operation
Just connect the pipeline and start the measurement after preheating. The display screen can view measurement results and diagnostic information without even opening the chassis during use.
Data collection and viewing are very convenient
The analyzer can store data for up to three months. Supports Ethernet connection to computers or data acquisition for long-term storage of data.
Built in Webserver, data can be viewed through Ethernet wired connection or Wi Fi wireless connection, using web browsers on mobile phones and computers.
Low power consumption, maintenance free
Both solar energy and alternating current can support field operation.
Lightweight and portable
Long term field measurements do not require complex facilities. Can be carried and lifted, easy to operate by one person.
Suitable for various usage scenarios
The analyzer case is anti-aging and suitable for indoor and outdoor applications. PreciseTech ™ The design ensures the flexibility of the analyzer for various application scenarios or research.
Technical Parameter
Conventional technical parameters
Measurement technology: Optical feedback cavity enhanced absorption spectroscopy (OF-CEAS)
Measurement frequency: once per second
Optical cavity volume: as low as 6.41 cm3
Current Speed: 250 sccm (standard milliliters per minute)
Total weight: 11.4 kg (including battery)
Chassis size (length x height x width): 51 cm× 33 cm × 18 cm
Operating temperature range:- 25℃ ~ 45 ℃
Operating humidity range: 0-85% RH
Operating pressure range: 70 ~ 110 kPa
Connection methods: Ethernet and Wi Fi
Wi Fi compatibility: 2.4 GHz，802.11 a/b/g/n/ac
Power consumption: steady-state 22W; Preheating (10.5~33VDC power supply) not exceeding 90W; Preheating (powered by general power or 24VDC) not exceeding 140W (when charging the battery)
AC power supply: including a universal power adapter (100~240 VAC; 50~60 Hz; output 24 VDC)
Battery life: Typically, 2 batteries work for 8 hours
LI-7815 CO2/H2Ogas analyzer
| measuring range | Accuracy (1 σ) | |
| CO2 | 1 ~ 10,000 μmol/mol | 0.04 μ mol/mol @ 400 μ mol/mol 5-second signal average 0.10 μ mol/mol @ 400 μ mol/mol 1-second signal average maximum drift:<0.2 μ mol/mol every 24 hours |
| H2O | 100 ~ 60,000 μmol/mol | 20 μ mol/mol @ 5-second signal average 45 μ mol/mol @ 1 second signal average |
| Response time（T10-T90)From 0 to 400 μ mol/mol, CO2Response time ≤ 2 seconds | ||
Origin and Manufacturer: United StatesLI-CORcompany
White Paper: LI-7810/7815 Instrument Performance Data and Technical Parameters
The LI-7810 CH4/CO2/H2O and LI-7815 CO2/H2O analyzers use innovative "optical feedback cavity enhancement technology" to accurately and efficiently measure trace gas concentrations. Whether it's long-term monitoring of local atmospheric concentrations or survey measurements of soil greenhouse gas fluxes, these two instruments can provide reliable data for your scientific research.
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