Operation using the data setting device Azbil Corporation
5-72 Model MTG11A/18A, MTG11B/18B, MTG14C
5-7-7 : Manual zero
This function is used to improve flow measurement more accurately when the flow
rate becomes 25% or less of setting range.
Model MTG has three manual zeroing functions for each excitation current.
MANUAL ZERO1: Zeroing for the excitation current 4.9mA.
MANUAL ZERO2: Zeroing for the excitation current 7.0mA
MANUAL ZERO3: Zeroing for the excitation current 11.9mA/14.0mA.
Make sure the detector is filled with the process fluid and stands still.
Before manual zeroing, execute auto zero.
Step Procedure Screen
1 Enter CALIBRATION MODE. Use or key to
cycle through the screens until the MANUAL
ZERO1 screen appears.
2 WORKING is flashing for approximately 20
seconds. Wait until READY appears.
3 Check the value of zero point. If 0.0% is displayed
on the main display, MANUAL ZEROING is not
necessary for MANUAL ZERO1. If the value of
zero point is not 0.0%, adjust the zero point.
4 Move the cursor under READY by pushing the
key.
0.5 %
> MANUAL ZERO1
READY
0.5 %
> MANUAL ZERO1
WORKING
0.5 %
> MANUAL ZERO1
READY
0.5 %
> MANUAL ZERO1
READY
CM2-MTG300-2001.book 72 ページ ２０１５年９月２９日 火曜日 午前１０時１４分
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