![SF-3500 Multi-Channel Automatic Soil Greenhouse Gas Flux Measuring System]( "SF-3500 Multi-Channel Automatic Soil Greenhouse Gas Flux Measuring System")
Preface
Soil carbon and nitrogen cycling is an important component of carbon and nitrogen cycling in terrestrial ecosystems, small changes can lead to significant changes in greenhouse gas emissions. There is an antagonistic relationship between the effects of CO2、CH4 and N2O in soil, like a “teeterboard”, in order to reveal the influencing factors and emission mechanism, it is necessary to measure carbon and nitrogen gas exchange simultaneously and accurately.
SF-3500 Multi-Channel Automatic Soil Greenhouse Gas Flux Measuring System, the latest instrument developed by LICA, it can measure N2O、CH4、CO2、CO and water vapor fluxes in soil at multiple points, help scientists to realize continuous and long-term monitoring of soil carbon flux, as many as 18 chambers can be connected. Meanwhile, SF-3500 can also be used for the study on N2O, CH4, CO2, CO and water vapor profiles. SF-3500 has the function of control, data storage, and data analysis, etc..
![SF-3500 Multi-Channel Automatic Soil Greenhouse Gas Flux Measuring System]( "SF-3500 Multi-Channel Automatic Soil Greenhouse Gas Flux Measuring System")
Main features
u Measure N2O、CH4、CO2、CO and water vapor fluxes in soil at multiple points, realize continuous and long-term monitoring of soil carbon flux;
u The SF-3500 multiplexer can connect with 18 chambers, making it ideal for multi-repetition and multi-processing experimental designs; The SF-3500 multiplexer has the function of control, monitor, and review measurements from each chamber;
u Soil chamber cable length:15 m (can be extended to 30m)
u Continuous, High-precision, Automatic, Unattended, Long-term monitoring in the field;
u Automatic calculation of gas flux without data processing;
u Each chamber can be connected to auxiliary sensors, such as: Soil temperature and humidity sensor ;
u Light weight, low energy consumption, the whole system is sturdy and durable.
Specifications
u Portable N2O and CO analyzer
(N2O , CO)
Precision (1δ, 1 sec / 10 sec):
N2O: 0.5 ppb / 0.2 ppb [<500 ppb]
CO: 0.5 ppb / 0.2 ppb [<500 ppb]
H2O: 100 ppm / 40 ppm
Linear measurement ranges (meets all specifications):
N2O: Up to 4 ppm
CO: Up to 4 ppm
H2O: Up to 30 000 ppm
Operational ranges:
N2O: Up to 40 ppm
CO: Up to 40 ppm
H2O:<99% RH, non-condensing
Measurement rate:
0.01 – 1 Hz (user selectable)
Flow response time:
<30 seconds (1/e)
<10 seconds (1/e)
with external diaphragm pump ACC-DP3H
Data outputs:
WiFi, Ethernet, USB, Serial (RS-232)
Power:
24-30VDC, 110/240 VAC, 50/60 Hz
180 watts (steady state)
max 300 watts with ACC-DP3H
Dimensions:
51 x 61 x 20 cm
Weight:
23 kg
u Portable Greenhouse Gas Analyzer
(CH4, CO2, H2O)
Repeatability / Precision（1δ, 1 s / 10 s / 100 s）:
CH4: 1.4 ppb / 0.5 ppb / 0.2 ppb
CO2: 300 ppb / 100 ppb / 30 ppb
H2O: 50 ppm / 20 ppm / 10 ppm
Linear measurement ranges:
CH4: Up to 100 ppm
CH4: Up to 1% (with extended range option)
CO2: Up to 20,000 ppm
H2O: Up to 30,000 ppm
Operational ranges:
CH4: Up to 1000 ppm
CH4: Up to 1% (with extended range option)
CO2: Up to 3%
H2O:<99% relative humidity, non-condensing
Measurement rate:
0.01 – 1 Hz (user selectable)
Flow response time:
<8 seconds (1/e)
<2 seconds (1/e) with ACC-DP3H external pump
Data outputs:
Serial RS232, USB (x2), AO (16-bits, 0 to 5 V DC), Ethernet LAN connection, VGA display, MIU, WiFi 802.11 b/g/n, 300 Mbps
Power:
60 W (11–30 VDC)
66 W (100–240 VAC, 50/60 Hz)
Dimensions：
18 × 47 × 36 cm
Weight:
16.9 kg
u SF-3500 multiplexer
Chamber interface number： 9 / 18
Storage media：SD card
Data interface：RS-232, RS-485, SDI-12
Display mode: 5-inch LCD touch screen
Synchronous pump: 3L / min , Brushless diaphragm pump
Working environment：
Temperature：-20~60 ℃
Humidity：0~95% RH，non-condensing
Dimensions：51 x 40 x 19 cm
Weight：12.15 kg
u Soil Chamber
Measuring Volume：276.27（cm²）
Fixed volume of air chamber：3243.8（cm³）
Cable Length：15 m
Operating Temperature：-20~60℃
Air Pressure Detection：
15～115 kPa (Range)，±1.5% (Precision)
Temperature Detection：
-25～85 ℃ (Range)， ±0.5℃ (Precision)
Dimensions：55 x 28 x 32 cm
Weight：8.55 kg
u LI-520A Soil temperature and humidity sensor
Humidity measurement range： 0-100%
Accuracy：±2%(0-50%), ±3%(51-100%)
Temperature measurement range：-30 ~ +70℃
Accuracy：±0.5℃
Communication mode: SDI-12
Cable Length：2 m
u Ordering Information
1. GLA151-N2OCM：Portable N2O/CO Analyzer
2. GLA132-GGA：Portable Greenhouse Gas Analyzer (CH4, CO2, H2O)
3. SF-3500-9: Multiplexer, Configuration：1 Controller Host (9 channels, LCD), 1 Adapter, 1 DC cable
4. SF-3500-18: Multiplexer, Configuration：1 Controller Host (18 channels, LCD), 1 Adapter, 1 DC cable
5. SC-22: Soil Chamber
6. LI-520A: Soil temperature and humidity sensor
Support: Provide technical support and service for life
Manufacturer: ABB, Canada / LICA, China