Azbil Corporation Operation using the data setting device
Model MTG11A/18A, MTG11B/18B, MTG14C 5-15
5-5-2 : Auto zero adjustment
Auto zero must be carried out only under the condition when the detector is filled with
process fluid at zero flow. Run this function only after installing the electromagnetic
flowmeter to the process pipe. Performing this function under a condition where the
process fluid is not at zero flow may cause measurement errors.
Set range: None in particular
Default None in particular
~Note The zero adjustment takes approx. two minutes. During the zero
adjustment, the output of analog current may rise to approx. 9 mA in
some cases. This is not abnormal. To carry out the zero adjustment,
set the control loop to manual.
Make the auto zero adjustment in accordance with the following procedure:
Step Procedure Screen
1 The screen at right is a screen display example in
MEASURING MODE (measurement state).
Press the MODE key.
2 The OPERATOR'S MODE screen appears for
approx. two seconds and then the damping setting
screen appears.
3 Press the key once to display the screen as
shown.
4 Press the key to move the cursor to the position
READY.
5 Press the key to start the auto zero adjustment.
If the main display selects % flowrate, the display
of 0.0 blinks during adjustment. With the
adjustment completed, the display stops blinking
with ON switched to READY.
This zero adjustment takes about two minutes.
6 Press the key to move the cursor to the position
under *.
Press the MODE key to return to the MEASURING
MODE and save data.
m CAUTION
You have only ten minutes to return to MEASURING MODE to save the new value before
the system resets it to the previously saved value.
1.0 %
01.94 m
3
/h
00069401
1.0 %
* OPERATOR'S
MODE
1.0 %
*
DAMPING
005.0 s
0.0 %
*
AUTO ZERO
READY
0.0 %
*
AUTO ZERO
READY
0.0 %
*
AUTO ZERO
ON
0.0 %
*
AUTO ZERO
READY
0.0 %
*
AUTO ZERO
READY
CM2-MTG300-2001.book 15 ページ ２０１５年９月２９日 火曜日 午前１０時１４分
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