Gas | oxygen | nitrogen flow meter | sensor | 0~250L/min | IP50
Code: EL-MF5712A compact and reliable gas flow meter designed for accurate measurement of oxygen, nitrogen, and other neutral gas flows in industrial and laboratory environments. The device supports RS485 Modbus communication as well as wireless technologies – LoRa and NB-IoT – ensuring flexible data transmission even in remote areas. Power supply can be provided either by 4xAA batteries or via a 5–24 VDC input. The integrated LCD display allows real-time monitoring of measurement data on site.
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Technical Specifications:
Flow measurement range: 0–250 L/min
Accuracy: ±2.0% + 0.5% FS
Operating temperature: -10 °C ~ +55 °C
Storage temperature: -20 °C ~ +70 °C
Maximum pressure: 0.8 MPa
Humidity resistance: <95% RH (non-condensing)
Protection rating: IP50
Power supply: 4xAA batteries (not included) or 5–24 VDC
Outputs: RS485 Modbus, LoRa, NB-IoT
Connection: BSPP 1/2" or NPT 1/2"
Display: LCD screen for real-time data display
Functions:
Accurate measurement of oxygen and nitrogen gas flow
RS485 Modbus protocol for industrial integration
Wireless communication options via LoRa and NB-IoT networks
Real-time data visualization on LCD screen
Flexible power options: batteries or DC power source
Compact design, easy system integration
Dust resistance (IP50), suitable for indoor use
Applications:
Industrial gas supply systems
Laboratories
Hospitals (oxygen supply monitoring)
Energy sector
Environmental monitoring
Manufacturing processes requiring gas flow measurement and monitoring
Pros:
High accuracy across a wide flow range
Integrated modern communication technologies (LoRa, NB-IoT)
Easy installation and operation
Can operate on batteries or DC power
Convenient real-time data viewing via LCD screen
Cons:
IP50 protection limits use outdoors or in humid environments
Batteries are not included (must be purchased separately)
Gas flow exceeding 0.8 MPa can damage the device
Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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