• LK-2100 portable soil respiration measurement system
  • LK-2100 portable soil respiration measurement system

LK-2100 Portable CO2/CH4/H2O soil respiration measurement system

  • LK-2100 portable soil respiration measurement system
SPECIFICATION
The LK-2100 portable CO2/CH4/H2O soil respiration measurement system is mainly used for in-situ measurement of soil respiration rate, and can also be connected to a static chamber to measure community photosynthesis or net exchange (NEE). The measurement of gas flux usually includes the measurement of gas flux at the interface between plant leaves and atmosphere, the measurement of gas flux at the interface between soil surface and atmosphere, and the measurement of gas flux at the interface between ecosystem and atmosphere. 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, air pressure, temperature and humidity, GPS and other data, control the system operation status, and calculate the gas flux or respiratory rate according to customer requirements. The gas analysis module is equipped with CO2 CH4 analysis module of tunable laser spectroscopy (TDLAS) as standard. The tunable laser spectroscopy (TDLAS) uses tunable semiconductor laser narrow linewidth and wavelength tunable features to detect the near-infrared "fingerprint" characteristic absorption spectrum of characteristic gas, which has the advantages of high sensitivity, high resolution, fast response, non-contact monitoring, etc.

Technical principles

Tuned laser spectroscopy (TDLAS), dynamic closed chamber method

Features

l  Tunable laser spectral analysis technology (TDLAS) realizes high time resolution and high sensitivity measurement

l  No calibration, no standard gas timing calibration

l  No cross interference of background gas

l  Low power consumption, lithium battery power supply up to 8 hours

l  High scalability, and multiple sensors can be added (such as GPS, optical radiation sensor, etc.)

l  Strong operability, powerful data processing function, and online real-time data processing

l  High degree of customization

Parameters

l  CO2 measurement range:0 ~2000 ppm

l  Minimum detection limit of CO2:1ppm

l  CO2 zero noise:0.5ppm

l  CO2 80% range noise:2ppm

l  CO2 range precision (20%, 80%):2ppm

l  H2O measurement range:0 ~ 6%

l  H2O accuracy:Better than ± 1.5% reading

l  CH4 measurement range:0 ~100 ppm

l  Minimum detection limit of CH4:0.1ppm

l  CH4 zero noise:0.15ppm

l  CH4 80% range noise:0.3ppm

l  CH4 range precision (20%, 80%):0.3ppm

l  Typical temperature accuracy:±0.1@20-60 °C

l  Battery:lithium battery

l  Charging power supply:12VDC

l  Endurance:Single battery can last for 8 hours

l  Ambient temperature:30 ~ 60 °C

l  Ambient humidity:<99% R.H

l  Sampling flow rate:1L/min

l  Respiratory chamber size:220 mm (D) x 120 mm (H)

l  Respiratory chamber volume:3140 cm3

l  Weight:<10kg

l  Optional module:Optical radiation sensor, soil temperature and humidity sensor, 4G transmission module, wind speed and direction sensor, etc

l  Scalability:Multiple data transmission channels are reserved on the main control board, and accessories, sensors, etc. can be added according to customer needs. The software is self-developed, and data integration can be synchronized with the relevant additional sensors.

Origin and ManufacturerChina Eco-mind