LI-830 CO2 LI-850 CO2/H2O analyzer

NegotiableUpdate on 01/22

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The LI-830 CO2 analyzer and LI-850 CO2/H2O analyzer are high-performance analyzers produced by LI-COR, which can obtain accurate and stable monitoring data. They have the characteristics of simple use, user-friendly software interface, easy maintenance, and wide application.

Product Details

LI-830/850 can meet your various measurement needs: (1) self-made assimilation chamber for measuring carbon dioxide and water vapor concentrations, used to evaluate ecosystem carbon exchange and evapotranspiration; (2) Monitor the concentration of carbon dioxide and water vapor in the growth chamber or greenhouse as the basis for controlling their concentration; (3) Atmospheric CO₂And H₂Continuous positioning monitoring of O concentration.

Application field

水中溶解CO₂Concentration measurement
Evaluation of bioremediation effect
Indoor air quality monitoring

Atmospheric CO₂And H₂O profile
Ventilation system effectiveness evaluation
Carbon sequestration leak detection

TOC analysis system
Volcanic activity monitoring

Main Features

Easy to operate, plug and play
Data screen display (optional), no need to connect to a computer, convenient for real-time viewing of CO₂And H₂O、 Pressure and temperature measurement data

The software is intuitive and easy to use
The software supports Windows or Mac systems and can display CO in real-time as a graph₂And H₂O data, convenient for setting collection options and viewing analyzer diagnostic information

Low maintenance cost
Users can clean the light path themselves without the need to return to the factory for recalibration

Built in pump (optional)
The built-in pump can provide stable intake flow rate

Technology*
Longer lifespan and lower power consumption of the light source
Stability: Infrared detector with constant temperature control
Accuracy: Integrated thermistor and pressure sensor ensure high measurement accuracy
Small data variation: gas path pressure compensation
Reliable: There is an insulation layer around the optical path to ensure constant temperature and measurement is not affected by vibration

Optional models

configuration	Detecting CO₂And H₂O	Detecting CO₂
Including built-in pump and display screen	LI-850	LI-830
Including built-in pump, without display screen	LI-850-1	LI-830-1
Including display screen, excluding built-in pump	LI-850-2	LI-830-2
Only analyzer, excluding built-in pump and display screen	LI-850-3	LI-830-3

LI-830 CO2分析仪和LI-850 CO2/H2O分析仪

Technical Specifications

CO₂measurement
Range: 0~20000 μ mol/mol
Accuracy: better than 3% of the reading value (LI-830);
Better than 1.5% of the reading value (LI-850)
Calibration drift
Zero drift (℃)^-1)¹：＜0.15 μmol/mol
Span drift (℃)^-1)²：＜0.03 %
Total drift (℃)^-1)³：
<0.4 μmol/mol @ 370 μmol/mol
RMS噪声：＜1 μmol/mol @ 370 μmol/mol
Sensitivity to water vapor (LI-850 only):
<0.1 μmol/mol CO₂/ mmol/mol H₂O
Detection limit: 1.5 μ mol/mol

H₂OMeasurement (LI-850 only)
Range: 0-60 mmol/mol
Accuracy: better than 1.5% of the reading value
Calibration drift
Zero drift (℃)^-1)：
<0.003 mmol/mol @ 0 mmol/mol
Span drift (℃)^-1)：
<0.03% mmol/mol @ 10 mmol/mol
Total drift (℃)^-1)：
<0.009 mmol/mol @ 10 mmol/mol
RMS noise: 1-second signal average
<0.01 mmol/mol @ 10 mmol/mol
Regarding CO₂Sensitivity:
<0.0001 mmol/mol H₂O / μmol/mol CO₂

Pump (optional)
Typical flow rate: 0.5 L/min
Power: 0.75 W

Display screen (optional)
Size: 6.7 cm (diagonal)
Resolution: 400 × 200 pixels monochrome
Power consumption:<200 μ W
Displayed variable: CO₂Read value, H₂O-reading value (LI-850 only), optical path temperature and air pressure

Conventional technical parameters
Output frequency: 2 Hz
Response time (T90) CO₂：<3.5s @ 0-375 μmol/mol；
H₂O：<3.5s @ 0-21 mmol/mol
Measurement principle: Non dispersive infrared
Traceability:
CO₂0-3000 μ mol/mol traceable gas calibration using WMO standards,
3000-20000 μ mol/mol traceable gas calibration using EPA protocol standards
H₂O (LI-850 only): Calibration using LI-610 portable dew point generator, NIST traceable
Pressure compensation range: 50-110 kPa
Zui atmospheric flow velocity: 1 L/min
Output signal: Dual analog voltage (0-2.5 V or 0-5 V) and dual current (4-20mA)
Digital output: TTL (0-5V)
DAC resolution: 16 bits within user range
Power supply demand:
Input voltage: 12-30 VDC
After preheating: average 0.3A@12 VDC(3.6W)
During preheating: average 1.2A@12 VDC(3.6W)
Operating temperature range: -20~45 ℃
Relative humidity range: 0-95% RH, non condensing
Size: 22.23 × 15.25 × 7.62 cm (8.75 "× 6" × 3 ")
Mass: 1 kg
Internal optical path volume: 14.5 mL

¹Zero drift refers to the variation of measured values with temperature when the gas concentration is 0.
²Span drift refers to the residual after resetting to zero as the temperature changes.
³Total drift refers to the variation of readings with temperature without recalibration