Endress+Hauser prolevel FMC 661 - Page 29

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 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
5V2H7
D
Tank diameter,
%, m or ft
6 - »E« Register entry
7V2H8
V
Tank vol um e*,
hl, gal
…
8 - »E« Register entry
9 V2H0 1 Activate linearisation
10 - »E« Register entry
* If V =100 is entered, % volume is measured
OffsetThe 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
• Level is displayed at V0H9
• Density correction, p. 29.
Next step…Set analogue output and relays in volume
units, see p. 30…33.
Note!
• For linearisation volume => level,
see Appendix, p 46.
V0H1
V0H2
D (V2H7)
E = 0?
OFF (V3H4)
V (V2H8)
»Empty« level E
(0…40%)
»Full« level F
(60…100%)
BA142_29
probe or
sensor
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
Level %: refer E% and F% to the
bottom (0%) and the top (100%)
of the tank! D is then 100%
Note!
Prolevel FMC 661 Chapter 4: Level Measurement
Endress+Hauser 25