LK-2400 Portable Soil CO2 CH4 N2O Respiration Measurement System
The LK-2400 Portable Soil CO2 CH4 N2O Respiration Measurement System is mainly used for in situ measurement of soil respiration rate, and it can also be connected to a static box to measure community photosynthesis or net exchange (NEE). Gas flux measurements usually include plant leaf-atmosphere interface gas flux measurements, soil surface-atmosphere interface gas flux measurements, and ecosystem-atmosphere interface gas flux measurements. The portable soil respiration measurement system consists of a main control module, a gas analysis module and a front-end sampling module. The main control module can integrate the analysis module, barometric pressure, temperature and humidity, GPS and other data to control the system operation status and calculate the gas flux or respiration rate according to the customer's demand. The gas analysis module is standardly equipped with a mid-infrared laser spectroscopy (MIR) analysis module, which can analyse the target gas by its superb absorption in the mid-infrared (MIR) band, and can achieve ultra-high sensitivity and accuracy monitoring within seconds. Meanwhile, the analyser is equipped with a precision temperature and pressure stabilised optical core, which provides the advantages of low-drift performance, high specificity, discriminative properties, accuracy and stability.
Technical Principles
Mid-infrared laser absorption spectroscopy (direct absorption) (MIR), dynamic closed gas chamber method
Feature
Technical Specifications
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The LK-2400 Portable Soil CO2 CH4 N2O Respiration Measurement System |
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CO2 |
CH4 |
N2O |
H2O |
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Measuring range |
10 ppm ~ 10% |
0-10000 ppm |
0 ~ 500 ppm |
0 ~ 6% |
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Accuracy (1s) |
0.2ppm |
<1ppb |
0.2ppb |
50 ppm |
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Accuracy (1min) |
0.03ppm |
0.3 ppb |
0.05ppb |
40 ppm |
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Accuracy (5min) |
0.02ppm |
0.2 ppb |
0.02ppb |
10 ppm |
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24 hours drift |
0.2 ppb |
2ppb |
0.1ppb |
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minimum detectable limit |
0.02ppm |
0.2ppb |
0.02 ppb |
0.01% |
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calibrate |
Factory calibration eliminates the need for repeat calibrations |
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Frequency of data acquisition |
Up to 10 Hz, standard 1 Hz |
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sampling flow rate |
Standard 1L/min, adjustable |
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Breathing chamber size |
220 mm (D) x 120 mm (H) |
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Respiratory chamber volume |
3140 cm3 |
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operating method |
APP |
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Technical Principles |
Mid-infrared laser direct absorption spectroscopy (MIRLAS) |
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Power supply |
12VDC lithium battery with 6-8 hours of continuous battery life |
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Ambient temperature and humidity |
5 ~ 40 °C; <95% R.H, non-condensing |
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link method |
WiFi |
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Positioning module |
Dual-mode Beidou GPS (optional) |
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data computation |
Yes (flux, respiration rate) |
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weights |
<10kg |
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Optional Modules |
Light radiation sensor, soil temperature and humidity sensor, 4G transmission module, wind speed and direction sensor, etc. |
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scalability |
The main control board reserves a number of data transmission channels, according to customer demand for additional sensors, and synchronise the corresponding sensors for data integration. |
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