Endress+Hauser Prolevel FMC 662, Installation And Operating Instructions Manual

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2) Calibration for
horizontal cylinders
# Matrix Entry Remarks
1 V0H1 E Tank empty, current
level in %, m, ft
2 - »E« Register entry
3 V0H2 F Tank full, current
level in %, m, ft
4 - »E« Register entry
After calibration the level can be read off at
V0H0/V4H0 in %, ft or m.
Linearisation, horizontal
cylinder A volume measurement can be made by
calling the linearisation table for horizontal
cylinders. Two parameters are entered:
•
Tank diameter, D
•
Tank volume, V .
# Matrix Entry Remarks
5 V2H7 D Tank diameter,
%, m or ft
6 - »E« Register entry
7 V2H8 V Tank volume*,
hl, gal
…
8 - »E« Register entry
9 V2H0 1 Activate linearisation
10 - »E« Register entry
* If V =100 is entered, % volume is measured
Offset The linearisation starts at the tank bottom.
If the zero point of the calibration does not
start at the same point you must now enter
a
negative
offset in the units of calibration.
# Matrix Entry Remarks
1. V3H4 –OFF Offset, m or ft
2 - »E« Register entry
After linearisation
•
Volume is displayed at V0H0/V4H0
•
Level is displayed at V0H9/V4H9
Next step
…
Set analogue output and relays in volume
units, see p. 28
…
31.
Note!
•
For linearisation volume => level,
see Appendix, p 42.
»Empty« level E
(0
…
40%)
»Full« level F
(60
…
100%)
BA143_25
probe
covered
100%
100% for entries in %
0% for entries in %
0%
100%
Zero point for linearisation
Empty
calibration E
Fig. 4.3:
Parameters for calibration and linearisation in a
horizontal cylinder
Channel 2: V4H1, V4H2
Level %: refer E% and F% to the
bottom (0%) and the top (100%)
of the tank! D is then 100%
Note!
Channel 2
V6H7
⇓
V6H8
⇓
V6H0
Channel 2
V7H4
Prolevel FMC 662 Chapter 4: Level Measurement
Hauser 25