Yokogawa RAMC - Manual (Page 40)

<6. ELECTRONIC TRANSMITTER (-E)>
6-14
IM 01R01B02-00E-E 10th edition January 01, 2013 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
Input of manual adjustment table (F52)
The manual adjustment table is input as follows:
Description Selection Key Indication
Change to setting mode Enter
Display mode
F1-
Setting mode 4 x →
Enter
→
F5-
F51
F52
Selection
5%- point
15%- point
25%- point
35%- point
45%- point
55%- point
65%- point
75%- point
85%- point
95%- point
105%- point
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter F52
F52 -5
F52 -15
F52 -25
F52 -35
F52 -45
F52 -55
F52 -65
F52 -75
F52 -85
F52 -95
F52 -105
Back to display mode ↑
↑
F5-
Display mode
2 Manual “wet” adjustment by comparison to a reference master meter with the real process fluid at
operating conditions:
This adjustment is useful under the following conditions:
• The original manufacturer’s calibration is not available or needs to be renewed.
Or
•
The user is not able to recalculate the new mm to flow rate table.
And
•
The user has the possibility to compare the meter indication with a master meter with the
process fluid at process conditions.
In these cases the following steps have to be performed:
2.a ) Place the RAMC in line with the master meter in an installation allowing controlled flow with the
process fluid at process conditions in a flow range from 5% to 105% of the expected flow range.
2.b ) Go to menu function F51 and press ENTER to switch to manual adjustment mode. (Switching back
to the original adjustment is possible by pressing ENTER again).
2.c ) Go to menu function F52 in order to start the manual adjustment.
2.d ) Set the flow to 5% of the new flow rate indicated by the master.
2.e ) Press ENTER to adjust the first 5% point.
2.f ) Repeat steps 2.d) to 2.e) for the 15%; 25%; 35%; 45%; 55%; 65%; 75%; 85%; 95% and 105%
points. (Note: The whole loop from 5% to 105% has to be adjusted in the requested order without
interruption. It is not possible to skip or stop and restart the adjustment.)
2.g ) The adjustment has to be finished and stored by pressing “ ↑ “.
After storage the new adjustment is permanently available and can be switched “on” or “off” by function
F51.