BOREAS.lcd massflow transmitter

Flow transmitter in splash-proof IP65 housing

Bild des Durchflussmessgerät BOREAS.lcd

The large LCD turns the BOREAS into a massflow meter, which has also proven itself in harsher industrial applications.


  • Processor controlled linearization
  • Taring at the push of a button
  • USB port (internal, external optional)
  • Bidirectional USB communication
  • Large LCD display
  • 5 selectable units
  • 6 gas standards switchable
  • 9-stage damping
  • Protection class IP65
  • Bluetooth interface (optional)


The devices of the BOREAS series are flow transmitters based on the calorimetric (thermal) principle in the splash-proof IP65 housing.
This robust design makes the devices very insensitive and allows very accurate measuring results even in rough environments. The devices use state-of-the-art microprocessor technology for linearization of the measurement curve as well as temperature-compensated sensors, thus achieving the extremely high precision that these devices have. The standard, internal USB interface allows bidirectional communication to configure the devices, as well as digital, serial output of the measured value with free software under various operating systems and is optionally available as an external, IP65-protected version. The devices can be tared at the push of a button, using software or via an externally connected button.
They also have an adjustable 9-stage damping for calming the measurement signal in case of unsteady or pulsating flow. The attenuation is adjusted by means of buttons or software. High-quality 16-bit digital-to-analog converters are used for the output of the analog signals, enabling precise, low-noise current or voltage signals. The devices are calibrated according to DIN1343 with air (0 ° C and 1013mbar), but a total of six different gas standards can be selected via software.

The BOREAS housing can be opened without screws, thanks to the innovative hinge-closing technology, and a variant that can be opened without tools is also available as an option.
Various analog output signals, an optional illuminated LCD display as well as a measuring range between 10 mln / min and 3000 mln / min make the BOREAS an all-rounder among flow transmitters.


LCD display Large graphics display
USB interface External IP65 protected USB interface
Current output 4…20mA
Digital output Bluetooth, virtual com-port
Enclosure Tool-less opening

Technical specifications

Device name

Model name

Order number


LFT1 / (LCD-version)

Measuring ranges
  • 10 Nml/min
  • 20 Nml/min
  • 30 Nml/min
  • 100 Nml/min
  • 200 Nml/min
  • 300 Nml/min
  • 1000 Nml/min
  • 2000 Nml/min
  • 3000 Nml/min
Accuracy ± 1% rd. + 0,5% fs.
Dynamics 1:10 (10…100%)
Resolution (switchable) 0,001 / 0,01 Nml/min

0,01 / 0,1 Nml/min

0,1 / 1 Nml/min

up to 30 Nml/min

up to 300 Nml/min

up to 3000 Nml/min

Additional selectable units l/h, cm³/min, cm³/sec, in³/min
  • Adjustable gas standards
  • Din 1343 – (1013mbar / 0°C)
  • Din 102 – (981mbar / 20°C)
  • 936mbar / 20°C
  • 1013mbar / 20°C
  • 760mmHg / 25°C
  • ISO 2533 – (1013mbar / 15°C)
Sensor technology Unidirectional sensor,

temperature compensated

Flow direction Only positive flow

Calibrated at DIN 1343


Get the complete data sheet here: Data sheet – BOREAS

Operating instructions, software and further downloads can be found here.


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