Aalborg developed the XFM57, XFM67 and XFM77 digital flow meters for gases with flow rates up to 1000 l/min. Calibrations for up to 10 different gases and internal conversion factors for up to 32 gases are offered. The flow rates are displayed in 23 different volumetric or mass flow engineering units including user defined.
The XFM funtions comprise programmable flow totaliser, high and low flow alarms, automatic zero adjustment, two relay outputs, jumper selectable between 0…5 V(DC) or 4..20 mA analogue outputs as well as status LED diagnostics. An optional local 2 x 16 characters LCD display with adjustable back light provides flow, total and diagnostic readings simultaneously. The flow meters can be programmed remotely via RS-232/RS-485 or optional Profibus DP interface.
Aalborg Instruments, New York, USA