Omega FDT-25W User Manual page 26

FDT-25W Wall Mounter Ultrasonic Flowmeter
When the backup battery is removed, the total working time will be reset to zero.
M+2 Displays the last power-off date and time
M+3 Displays the last power-off flow rate
M+4 Displays how many times of has been powered on and powered off.
A scientific calculator for the convenience of field working.
All the values are in single accuracy.
The calculator can be used while the flow meter is conducting flow measurement.
M+5
Water density and PT100 temperature can also be found in this function.
Set fluid sound speed threshold
Whenever the estimated sound speed (displayed in M92) exceeds this threshold, an alarms
M+6
signal will be generated and can transmitted to BUZZER or OCT or RELAY.
This function can used to produce an alarm or output when fluid material changes.
M+7 Displays total flow for this month(only for the time past)
M+8 Displays total flow for this year(only for the time past)
Display the not-working total time in seconds. The total failure timer will also include the time
M+9
when power off, if the back-up battery is applied.
M.2 Entry to solidify the zero point. Password protected.
Setup the Q value threshold.
M.5 If the present Q is below this threshold, flow rate will be set to 0.
This function is useful when flow meter is installed in noisy environment or on airy pipes.
M.8 The maximum flow rates for today and this month.
M.9 Serial port tester with CMM command output for very second.
M-0 Entry to hardware adjusting windows only for the manufacturer
M-1 4-20mA output adjustment
M-2 4mA calibration for AI3 input
M-3 20mA calibration for AI3 input
M-4 4mA calibration for AI4 input
M-5 20mA calibration for AI4 input
M-6 4mA calibration for AI5 input
M-7 20mA calibration for AI5 input
M-8 Lower Temperature Zero setup for the PT100(<40degC)
M-9 Higher Temperature Zero setup for the PT100(>55degC)
M-A Temperature Calibration at 50℃
M-B Temperature Calibration at 84.5℃
Note: The term totalizer is also called accumulator
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