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DFM 5.1 Doppler Flow Meter
MAIN DISPLAY
The main display shows the units selected from the Units/Mode menu, Flow or
Velocity rate being measured, TOTALIZER and RELAY states. The DFM 5.1
will start-up with this display.
MESSAGE ICON
Press from the main display to view status of the data logger and error/warning
messages provided by the instrument. The Message Icon will appear on the main
display if error messages are being generated by the instrument. Press to return
to the main display.
STATUS
Press from the main display to view instrument status. Velocity will be
displayed in ft/sec or m/sec.
Tot
Displays the current totalizer reading.
Signal Cutoff
Adjust the setting in percent to suppress flow
readings at zero flow when fluid swirling or pipe
vibration may cause the instrument to continue
reading. Example: Signal Cutoff at 5% will force the
display and outputs to zero when signal strength
drops below 5%.
Signal Strength
Displays percentage of signal being received by the
ultrasonic sensor.
Relays
Energized relays will display as a white character on
a black background.
20mA at
Displays the flow rate set as 20mA in the Calibration
menu. Press to return to the main display.
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