Yokogawa ADMAG AXF - Manual (Page 77)

IM 1E10C1-E 8-1
8. ACTUAL OPERATON
8. ACTUAL OPERATION
After you have installed the flow tube into the process piping, wired the input / output
terminals, set up the required parameters and performed the pre-operation zero adjust-
ment, the magnetic flowmeter should output an accurate flow signal from its terminals
as soon as the measured fluid begins to flow.
This section describes procedures of zero adjustment and alarms countermeasure.
8.1 Pre-Operation Zero Adjustment
This section describes three procedures for performing zero adjustment. Using the data
setting keys on the converter front panel, using a BT200 or using a Hart Communicator.
Zero adjustment is made to set the instrument output to 0% (4mA) when the flow rate is
0.
1. Zero adjustment should be done only when the fluid is filled in the flow tube and the
fluid velocity is completely zero by closing the valve.
2. Zero adjustment should be done prior to the other operation. For 20 seconds during
the zero adjustment, any setting cannot be accepted.
8.1.1 Zero Adjustment Using Data Setting Keys
Call up “C01” (ZERO TUNING) on the setting mode and touch SET key to make
the data display.
Call up “C02” (MAGFLOW ZERO) and touch SET key.
Touch SET key twice.
“-ZEro-” is displayed for about 20 seconds.
It changes into the Flow Rate Display Mode after the zero adjustment is completed.
Display Description
Code
00
01 INHIBIT
ENABLE
Content
Ч 2
Ч 2
SET
SET
SET
SET
Set “01” and touch SET key twice.
IMPORTANT