Mass Flow Meters


Aalborg® Instruments’ ZFM Mass Flow Meters combine meter intelligence, user convenience, and outstanding flow performance.

They are designed for multi-gas/multi-range functionality up to 8 bar (currently 6 gases) and standard accuracy of ± (0.5% RD + 0.2% FS) based on actual calibration. By connecting the instrument to the RS232/RS485 port of a PC or lap-top and running free “ZFM Configuration Utility” software, the user can select  different gas types and flow ranges within a  few minutes without removing the instrument from the installation.

ZFM Design Features:

•Extensive self-diagnostics with status LED or OLED (optional) indication
•Automatic sensor zero offset adjustment (digital interface or local push button)
Digital interface (RS-232 or RS-485) test/configuration port (optional Modbus RTU with isolated RS-485 transceiver)
•Two programmable Totalizers
•Full scale covered flow ranges  from 3.5 sml/min to 10 sl/min in seven models
•Selectable analog 0-5 Vdc, 0-10 Vdc, or 4-20mA outputs
•Universal 14-24 Vdc power supply input


  • accuracy of ± (0.5% RD + 0.2% FS)
  • extensive self-diagnostics
  • two programmable Totalizers
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