To address the spatiotemporal variability of soil gas flux, LICA has developed a new multi-channel, automatic soil gas flux measurement system, the SF-3500. The SF-3500 can be connected to various greenhouse gas analyzers and stable isotope analyzers to measure the fluxes of multiple gases in soil. It can also enable the sequential switching of multiple flux chambers for measurement, allowing for long-term and continuous monitoring of multi-point soil gas flux.It can connect numerous analyzers to measure multi-parameter flux synchronously, thereby reducing the system error associated with multi-system measurements. In addition, an LCD touchscreen and an Android mobile phone app are added for control and display, eliminating the need for computer settings and a separate display. The SF-3500 remote control and data transmission functions make instrument maintenance easier and simpler, making it more suitable for long-term field measurements. After long-term testing and verification, the SF-3500 demonstrates improved accuracy and stability, making it an ideal choice for prolonged field use.
Main Features
The system enables multi-point, continuous, unattended, long-term monitoring of soil greenhouse gas flux, and supports connection with up to 18 soil flux chambers
Optional soil emission measurement for N2O, CH4 , CO2 , NH3 , OCS, CO2 isotopes, N2O isotopes, and other gases, and is compatible with various NDIR and laser-based gas analyzers from different manufacturers
Customizable chamber options for diverse applications, including transparent chambers, open-top chambers, underground chambers, and water surface chambers
The system is rugged and reliable, capable of stable operation in harsh environments and extreme weather conditions
Specifications
u SF-3500 multiplexer
Number of Chamber Interfaces： 9 / 18
Storage media：SD card
Communication Interface：Bluetooth, WIFI
Operation Condition：Temperature -20~45℃
Humidity: 0~95% RH (No condensation)
u LI-G3001 Greenhouse Gas Analyzer
Measurement principle：CRDS
Simultaneous measurement (CH4, CO2, H2O)
Accuracy (1δ, 100 sec )
CH4 ≤0.6 ppb
CO2 ≤150 ppb
H2O ≤40 ppm
Measurement range
CH4 0-100ppm
CO2 0-10000ppm
H2O 0-3%
Dimensions：56 x 36 x 19 cm
Weight：9 kg
u LI-G3006 Portable N2O/CO2 Analyzer
Measurement principle：TDLAS
Simultaneous measurement (N2O, CO2)
Sensitivity (1σ，100sec)
N2O：< 50 ppt
Measurement range
N2O：2 ppb - 500 ppm
u SC-22 Automated Soil Flux ChamberSize
Measurement Area： 276.27(cm²)
Volume of air chamber：2943.8(cm³)
Cable length：15m
Operation temperature: -20-60℃
Pump：3.5L/min
Dimensions：55 x 28 x 32 cm
u Ordering Information
SF-3500-9: 9-channel soil flux measurement system console,
SF-3500-18: 18-channel soil respiration measurement system console
SC-22: Fully automatic soil flux measurement chamber
SMT100: Soil temperature and humidity sensor
Support: Provide technical support and service for life
Manufacturer: LICA, China