Electromagnetic flowmeter M910
Operation manual
31
Current Loop Test standard factory setting:
C.Loop Test
Off
5.2.3.7
Basic Menu Password (3.7 PASSWORD MN.)
Function enables you to enter a new password for basic menu access after pressing the ENTER key. With the “Up”
and “Right” key any password in range between 00000 and 99999 can be set. To change the current valid password
to the new password press the ENTER key. ESC key discards changes.
Following values are pre-set:
Basic Menu Password standard factory setting:
PASSWORD MN.
00000
5.2.4 Calibration menu (4 CALIBRATION)
Calibration menu
is accessible as part 4 of the
Setup menu,
if the correct calibration password has been entered.
After entering the
Basic menu password
only parts 1 to 3 of
Setup menu
are accessible. Without the correct
password access to the
Calibration menu
is refused. Default factory set Calibration password is “10000”.
Note: Flowmeter M910 enables calibration at 2, 3 or 4 points. Each calibration point contains 2 values.
Nominal value of calibration point is selected by user in range b/- Q
MAX
(for maximum flowrates
see table 1: M910 flowrates). It is expressed in flowrate units. To this nominal value is attached a
calibration constant. Calibration constant doesn’t have a unit. In the calibration process you change this
calibration constant to reach similarity between standard flowmeter and the calibrated flowmeter.
Calibration constants must be different. In the case of two equal calibration constants, the measured
values could be wrong.
5.2.4.1
Number of Calibration Points (4.1 NR.OF CALP.)
Function enables you to enter a new number of calibration points after pressing the ENTER key. With the “Up”
and “Right” keys any number in range between 2 and 4 can be set. To change the current valid number to the new
number press the ENTER key. ESC key discards changes.
Note: Standard number of calibration points is 2. More calibration points are used for special applications
when higher accuracy is expected (negative flowrate, low flowrates etc.).
Following values are pre-set:
Number of Calibration Points standard factory setting:
NR.OF CALP.
2
5.2.4.2
Calibration point 1 (4.2 CAL.POINT 1)
Function enables you to change nominal and calibration value of Calibration point 1 after pressing the ENTER
key. With the“Up” and “Right” keys any value in the range of real flowrates can be set. To change the current valid
Setting any new value in calibration menu changes calibration data! Calibration
should be performed in an appropriate equipped laboratory.
We recommended using software Flow910 for easy Calibration. It contains
„calibration wizard“ and can prevent flowmeter from incorrect calibration.