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as empty pipe when the signal is less than 65, and the flow rate display is 0.
M30 Select metric or British system unit.
M31 Select flow rate unit.
M32 Select totalizer flow unit.
M33 Select totalizer multiple factor.
The multiplying factor ranges from 0.001 to 10000. Factory default is 1
M34 Turn on or turn off the NET totalizer
M35 Turn on or turn off the POS (positive) totalizer
M36 Turn on or turn off the NEG(negative) totalizer
M37 Restore factory settings. Totalizer reset.
M38 Manual totalizer used for easier calibration. Press a key to start and press a key to stop
the manual totalizer.
M39 Language selection. there are Chinese+English+Italian or English+Italian+Turkish
*M40 Damping factor. The damping factor ranges from 0 to 999 seconds.
0 means there is no damping. Factory default is 10 seconds
*M41 Cut-off low flow rate (or zero flow rate) to avoid invalid accumulation.
M42 Zero calibration/Zero point setup. Make sure the liquid in the pipe is not running while
doing the setup.
M43 Clear the zero point value, and restore original value.
M44 Manual Zero point . Set up a flow bias. Generally this value should be 0.
M45 Flow rate scale factor. The default value is ‘1’.
Keep this value as ‘1’, when no calibration has been made.
M46
Networks address 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 system parameters.
If password is forgotten, you could send a command ‘LOCK0’ to the serial input to
unlock. Or you can write 0 to REGISTER49-50 under MODBUS protocol.
M48 Entry to linearity correcting data inputs. By using of this function, the non-linearity of
flow meter will be corrected. Correcting data shall be obtained by careful calibration.
M49 Displays the input contents for the serial port.
By checking the displays, you can know if the communication is ok.
M50 Switches for the built-in data logger. There are as many as 22 different items can be
chosen. To turn this function, select ‘YES’ the system will ask for selecting the items.
M51 Time set for timing output.(data logger or printer)
M52
Data logging direction control.
(1) If ‘Send to RS485’ is selected, all the data produced by the data logger will be
transmitted out through the RS-232/RS485 interface
(2) If ‘To the internal serial BUS is selected, the data will be transmitted to the internal
serial bus which allows a thermal printer, or a 4-20mA analog output module, to be
connected to it.
M53 Display analog inputs, AI5, current value and its corresponding temperature or pressure
or liquid level value.