The LK-2100 Portable CO2/CH4 Flux Measurement System utilizes Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology. By leveraging the characteristics of tunable semiconductor lasers to detect signature gases and their near-infrared "fingerprint" absorption lines, it enables highly sensitive, high-resolution, rapid-response, and non-contact monitoring. The system is paired with the SFC-20 portable soil flux chamber for in-situ measurement of soil CO2/CH4 fluxes. Additionally, depending on the measurement scenario, it can be connected to the SNC-50 static chamber for measuring community photosynthesis or net ecosystem exchange (NEE), as well as the WSF-20 floating respiration chamber designed for water surface measurements.
Key Features
Technical Parameters
|
Measurement Parameters |
CO2/CH4/H2O |
|
Measurement Range |
CH4：0 - 100 ppm； CO2：0 - 10000 ppm； H2O：0 - 5% |
|
Measurement Accuracy |
(At typical working concentrations, 5-min raw average, 1σ) CO2：0.1 ppm； CH4：0.01 ppm； H2O：10 ppm |
|
Response Time (T90) |
<30 s |
|
Output |
RS485 |
|
Calibration |
Factory calibrated, no routine recalibration required |
|
Input Voltage |
DC 12 V |
|
Operating Current |
260 mA |
|
Operating Environment |
-20 - 50 °C, < 95% RH |
|
Control Software |
· Chinese interface for real-time gas concentration and flux calculation. · Displays real-time gas concentrations, soil temperature, moisture, electrical conductivity, chamber pressure, and temperature. · Features a carbon footprint map displaying real-time carbon flux data for sampling points on a GPS map. · Allows individual configuration of measurement parameters per channel, including: o Measurement Area o Measurement Height o Chamber Equilibrium Time o Flux Measurement Duration o Post-Measurement Purge Time |
|
Flux Recalculation System |
· Performs secondary analysis on raw concentration data. · Capable of removing outliers/discrete values or adjusting temperature/pressure compensation factors for flux recalculation. · Supports batch processing of data. · Software is copyrighted. |
|
Analyzer Host Interface |
English operation software interface |
|
SFC-20 Automatic Soil Flux Chamber (Standard, Optional) |
|
|
Chamber Type |
Darkroom (stainless steel) |
|
Overall Dimensions |
34×29×40 cm（L×W×H） |
|
Weight |
Approximately 7.5 kg |
|
Operation Mode |
Automated Open/Close |
|
Communication |
WIFI |
|
Power Supply |
12V, Built-in 5600 mAh Rechargeable Lithium Battery |
|
Measurement Method |
Flow-Through Measurement |
|
External Sensors |
Air Temperature, Humidity, Pressure; Soil Three-Parameter Sensor (Temperature, Moisture, Electrical Conductivity) |
|
Measure Area/Volume |
314 cm2/2093 cm3 |
|
Positioning Module |
BeiDou/GPS Dual-Mode |
|
Operating Environment |
Temperature: -20~45°C; Humidity: <99% R.H (non-condensing) |
Standard Configuration
Optional Chamber
Manufactured : Eco-mind, China
