LK-2300 Soil CO2 Profile Monitoring System adopts Finnish Vaisala high-precision soil CO2 sensors to ensure the accuracy, stability, and environmental tolerance of the sensors. It consists of data collector transmission module RTU, GMP343 CO2 sensors, and data collection and display platform, which monitors the gradient change of CO2 concentration in the soil by installing multiple GMP343 CO2 probes to different depths of the soil.
Key Features:
- Online continuous monitoring, unattended monitoring.
- Theplatform can simultaneously access and manage different functions of monitoring equipment such as weather stations, soil moisture monitoring stations, hydrological and water quality monitoring stations.
- Can view, download and analyse data online at any time
- Excellent accuracy and stability
- Silicon based non-diffuse infrared sensor (NDIR)
- provides single beam, dual wavelength carbon dioxide (CO2) measurements with no moving parts
- Has temperature, pressure, humidity and oxygen compensation options
- Has low power consumption and low heat dissipation is suitable for outdoor use
- Compact and lightweight
System Configuration
Data Collector Transmission Module RTU, GMP343 Carbon Dioxide Sensor, Data Collection Presentation Platform
Wireless Data Acquisition Transmission Module
The TBSL1/RFB-4G is a versatile RTU for outdoor applications, acting as a multi-sensor wireless bridge that can operate on any LTE 4G network based on its dual-mode modem. A flexible platform suitable for a wide range of commonly used sensors in ecological environment monitoring, it is built-in with a variety of sensor interfaces, including SDI-12, pulse and analogue, etc.; the TBSL1/RFB-4G relies on the MQTT protocol to exchange data with the application server, which ensures the stability of the transmission and the quality of the data. During the transmission measurement cycle, the platform establishes a (secure) TCP/IP connection with the MQTT proxy server and issues its measurement commands.
Main Parameters
- Input channels: SDI-12 v1.3 digital protocol, 2 analogue inputs, 1 pulse input channel
- Dual-mode modem: LTE:BC3/5/8/28, 3G:BC1/5/8
- MQTT v3.1.1 network protocol: Reliable and persistent communication using MQTT protocol QoS=1
- MQTT communication security options: plain TCP/IP, TCP/IP with username and password, TLS1.2 with username and password, TLS1.2 and client certificates.
- PC-side application (USB): configurable measurement intervals per sensor, configurable Transmission intervals
- Automatic time alignment
- Remotely configurable
- Rechargeable lithium-ion battery
- Solar panel: 2-5W, MPP voltage 5-6V
- Low quiescent current: 400µA
- Operating temperature: -40 ~ 85°C
GMP343 Carbon Dioxide Sensor
The GMP343 sensor is a silicon-based, non-diffuse infrared (NDIR) sensor that provides single-beam, dual-wavelength Carbon Dioxide (CO2) measurements. The sensor consists of a CO2 sensor, electronics, and an enclosure suitable for long term field use, with no moving parts, and offers temperature, pressure, humidity, and oxygen compensation options for excellent accuracy and stability.
Main Parameters
- Temperature
- Operating: -40 to +60 °C (-40 to +140 °F)
- Storage: -40 to +70 °C (-40 to 158 °F)
- Pressure
- Compensation range: 700 to 1300 hPa
- Operating: <5 bar
- Pumped airflow: 0 to 10 L/min
- Electromagnetic compatibility: Conforms to EN 61326, general environment
- Performance indicators
- Range options:0 -1000 ppm, 0-2000 ppm, 0-3000 ppm, 0-4000 ppm, 0 -5000 ppm, 0-2 %
- Accuracy:±1.5 %
- Response time: 30s
- Inputs and outputs:
- Operating voltage 11 to 36 VDC
- Power Consumption
- without optical heating: <1 W
- with optical heating: <3.5 W
- Analogue output: Current output Range 4 to 20 mA
- Resolution: 14 bits
- Maximum load: 800 Ohm @ 24 VDC, 150 Ohm @ 10 VDC
- Voltage output
- Range: 0 . -2.5 V, 0- 5 V
- Resolution : 14 bits (13 bits at 0-2.5 V)
- Minimum load : 5 kOhm
- Digital output : RS485, RS232
- Material:
- Case: anodised aluminium alloy
- Filter cover PC
- Protection class
- housing (with cable) IP67
- Diffusion filter (weatherproof) IP65
- diffusion filter (sintered PTFE) IP66
- Cable gland type: 8-pin M12
- Weight (probe section only): 360 g
