FDT-25 Handheld Ultrasonic Flowmeter
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by pressing the dot key followed by the backspace key. Take care or make note on the
parameters before doing the restoration
M38
Press-a-key-to-run or to stop totalizer for easier calibration
M39
Operational interface language selection in Chinese and English. This selection makes
it possible that more than 2 billions of people on the world can read the menu.
M40
Flow rate damper for a stable value. The input range is 0 to 999 seconds.
0 means there is no damping. Default value is 10 seconds
M41
Lower flow rate cut-off to avoid invalid accumulation.
M42
Zero point setup under the condition when there is no liquid running inside the pipe.
M43
Clear the zero point set by the user, and restore the zero point set by the manufacturer
M44
Set up a manual flow bias. Generally this value should be 0.
M45
Scale factor for the instrument. The default value is ‘1’.
Keep this value as ‘1’, when no user calibration has been made.
M46
Network environment Identification Number. Any integer can be entered except 13(0DH,
carriage return), 10 (0AH, line feeding), 42 (2AH), 38, 65535.
Every set of the instrument in a network environment should have a unique IDN. Please
refer to the chapter for communication.
M47
System locker to avoid modification of the parameters
M48
Not used
M49
Communication tester
M50
“Option” selection for the built-in logger. It also functions as the switch of logger
M51
Time setup for the data logger
M52
(1) Data logging direction control. If ‘To RS-232’ is selected, all the data produced by
the data logger will be transmitted out through the RS-232 interface
(2) If ‘To buffer ‘ is selected, the data will be stored into the built-in logger memory
(3) Buffer transferring and buffer clearing
M53
Logger buffer viewer. It functions as a file editor. Use Dot, backspace UP and DN keys
to browse the buffer.
If the logger is ON, the viewer will automatically refresh once new data are stored
M54
Not used
M55
Nod used
M56
Not used
M57
Not used
M58
Not used
M59
Not used
M60
99-year calendar. Press ENT for modification. Use the dot key to skip the digits that
need no adjusting.
