The LB-856 CO2 concentration meter is used for collecting data from environmental measurements, subsequently shared via Ethernet interface via a range of communication protocols.
Mini weather station: CO2 and O2 concentration measurement and recording, air humidity and temperature, and atmospheric pressure measurement (additional LB-715 sensor).
The meter is equipped with an internal module for O2 concentration measurement and 4 measurement inputs for externally connected sensors:
The basic version of the module provides a Co2 concentration meter without the need to connect external sensors.
The thermometer input enables temperature measurement with the use of an external thermistor probe in the range of -60…+150°C. The dedicated probe with special thermistor provides for optimum precision of measurement amounting to 0.1°C in the range of -30…+100°C, and 0.5°C in the remaining range.
The thermistor probe is an optimum and money-saving solution for measuring temperature in most cases. If a temperature measurement is required in a wider range, with a higher precision, and in a considerable distance from the LB-856 module, or perhaps with a type/calibration certificate issued by the Central Office of Measures, than the temperature sensor with S300 interface may be used.
The S300 input of this CO2 recorder enables virtually any sensor to be connected with the S300 interface. The S300 is a digital current loop interface, providing double-wire connection of the sensor and allowing considerable distance between the sensor and the data collection module, at the same time powering the sensor via the module and delivering digital data from the sensor to the module.
In particular, the CO2 concentration meter is compatible with:
Analogue input of the CO2 concentration meter enables voltage measurement, thus enabling the connection of any sensor with 0–10 V output.
The CO2 concentration meter is equipped with a built-in recording memory, allowing for automatic recording of CO2, O2, temperature and other values.
The Ethernet interface enables the incorporation of the LB-856 module in the data transmission network or direct connection to a PC. The interface may operate in 10/100 Mb/s modes.
An optional power supply over Ethernet — POE — is also possible.
The LB-856 module supports standard communication protocols, thus allowing simple integration with any measurement systems and existing software.
The IPv6 protocol support in the LB-856 meter enables it to be used in networks in which this protocol is employed, or in networks that will shortly require such a protocol. In the case of migration of current IPv4 networks to IPv6 protocol, the LB-856 module will not require any extra work or additional investments.
The mechanism of no-state auto-configuration of the IPv6 (SAC) address allows the incorporation of the LB-856 module in the network, without the need for individual configuration of each module.
The LB-856 module enables direct data overview in a web browser. The data are automatically updated every 10 seconds.
The LB-856 CO2 concentration meter shares data in JSON format, with the use of the HTTP protocol. Typical applications of the CO2 recorder are all network programs that are able to read out data in the below format.
The sample simple PHP script shows how the data from the CO2 meter may be read-out and incorporated in the WWW webpage: lb856-json.php
The LB-856 module shares data in XML format, with the use of the HTTP protocol. Typical applications are all network programs that are able to read out data in the following format.
SNMP monitoring enables obtaining information about the state of the network interface and read-out all measurement results obtained by the module. In a typical case such as server-room monitoring, the temperature may be monitored in a few places at ones, water flooding may be detected, and information may be received about door opening.
It is possible to programme threshold alarms for all measured values, which — when detected — trigger a trap (SNMP TRAP) sent to the NMS software. When an alarm state is detected, the NMS informs particular individuals via the use of the specified mechanisms (email, text message, etc).
The CO2 concentration meter enables 16 independent alarms to be defined for the measured data. Alarms are signalled in the form of SNMP traps sent to a designated NMS address, email messages and syslog messages.
For every alarm the following may be configured:
The possibility of correlating every alarm with any of the measured data enables, for example, setting individual alarms for 16 different parameters, or, in extreme cases, 16 independent alarm ranges for one measured value.
The device may additionally come with software for Windows — LBX software — enabling:
The LB-856 module is by default powered by an external 12 V power unit. This power source enables easy usage of the rechargeable battery power supply in systems that require it.
Optionally, the LB-856 CO2 recorder may be equipped with the POE module, providing a power supply via the Ethernet cable, without the need to use an external network power unit. This option features a simplified installation, eliminating the need to establish a connection with the electricity mains — e.g. in places, where it is not available or not convenient. The use of POE requires a suitable network infrastructure — the used network switches must be POE type ports; it is also possible to use an intermediary power unit (midspan).
|CO2 concentration meter: LB-856|
|CO 2 measurement||Sensor: built-in, NDIR
Measurement range: 0…5,000 ppm (0…0.5%)
CO 2 measurement precision: ±100 ppm / ±5% of the measurement value
Reaction time: 20 seconds
Warming-up time after switching the power on: ≤ 1 minute
|Additional measurement inputs||O 2||
sensor: external LB-865-O2
Measurement range: 0.0…100.0%
Measurement resolution: 0.1% or 0.01%
Measurement uncertainty: 0.1%
Measurement range: -60…+150°C
-0.1°C in the range of -30…+100°C
-0.5°C in the range of -60…-30 and +100…+150°C
Measurement resolution: 0.1°C
any data source in the standard of S300 digital current loop
Data transmission: 300 bps 7/N/1
|0…10 V||Measurement range: 0.00…+10.00 V
Measurement resolution: 0.01 V
Measurement uncertainty: 0.01 V
|RS-232||Universal input/output of the serial interface|
|Interfaces||Ethernet||10/100 Mb/s, full-duplex / half-duplex, flow-control
POE (optionally on request)
|Power supply||External power unit||Power supply voltage: 12…24 V DC
Power input: max. 2.5 W (without S300 inputs)
Each S300 input increases the power input by 25 mA (at 12 V power supply: 0.3 W)
|POE (Power Over Ethernet)
(optionally on request)
Class 1 (max. 3.84 W)
Power supply via 1-2/3-6 data lines or via unused 4-5/7-8
|Operation conditions||Temperature range: 0…+50°C|
|Humidity range: 0…95%,
without water condensation
|External dimensions||Plastic housing||85 x 85 x 40 mm|