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Very compact grey colored, water tight enclosure
Very compact grey colored, water tight enclosure
Very compact grey colored, water tight enclosure
Very compact grey colored, water tight enclosure
Very compact grey colored, water tight enclosure
Very compact grey colored, water tight enclosure
Circuitboard with components, terminals

Multifunctional CO2 transmitter with corrosion protection - PoM supply - output via Modbus RTU


This multifunctional transmitter is treated with a corrosion protective and ammonia resistant coating that makes it suited for applications in the agri-/horticulture industry or in other harsh environments. This sensor is intended for temperature, relative humidity and carbon dioxide (CO2) monitoring and features 'Power over Modbus' or PoM connection. This means that Modbus RTU communication and 24 VDC power supply can be connected via one RJ45 connector. The measured values can be read out via Modbus RTU. The CO2 sensor element is replaceable. The firmware can easily be updated thanks to the bootloader. All settings can be adjusted via Modbus RTU. Thanks to the integrated ambient light sensor, the ventilation system can be optimised depending on the occupancy of the room.


Article code ODMHM-R
Category Outdoor CO2 transmitters
Available
Current stock 4 U.
Factory lead time 4 Week(s)

- Suitable for applications in the agriculture and horticulture sector
- Selectable temperature, relative humidity and CO2 ranges
- Bootloader for updating the firmware via Modbus RTU communication
- Day / Night detection via ambient light sensor
- Ambient light sensor with adjustable ‘active’ and ‘standby’ level
- Modbus RTU (RS485)
- Removable CO2 sensor element for easy calibration and verification
- Long-term stability and accuracy
- Monitoring of temperature, relative humidity and CO2 levels

Frequently asked questions:
In general, the difference is the supply voltage: -M version: The –M versions are Power over Modbus supplied with 24 VDC via an RJ45 socket. They do not feature a physical out, however, there is an output value generated and read via Modbus RTU. When combining multiple Sentera products via Modbus RTU, we advise to use –M or -F series. -F version: The –F version is supplied with 18 - 34 VDC via a terminal block and features physical outputs. The -F version of the product is not suited for 3-wire connection. It has separate grounds for power supply and analogue output. Connecting both grounds together might result in incorrect measurements. Minimum 4 wires are required to connect -F type sensors. When combining multiple Sentera products via Modbus RTU, we advise to use –M or -F series. -H version: The –H version is a combination of –M and –F series. They can be supplied via Power over Modbus (24 VDC via an RJ45 socket) or via the terminal block, whichever the customer prefers. The –H series also features physical outputs via the terminal blocks. -G version: The –G version features 18 – 34 VDC or 15 – 24 VAC. The -G version is intended for 3-wire connection and features a ‘common ground’. This means that the ground of the analogue output is internally connected with the ground of the power supply. In case a Sentera sensor will be connected to other, non-Sentera branded products, we advise to use –G series.
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