Endress+Hauser silometer FMC 671 Z, Operating Instruction, Page: 30 / 68

5.1 Linearization for a horizontal cylindrical tank
The Silometer FMC 671 Z/676 Z transmitter uses a stored linearization table which requires
the entry of the tank diameter, tank volume for its volume calculations.
Procedure
Step Matrix Entry Significance
1 V9H5 e.g. 672 Reset, see Section 4.1 (default = operating mode 1)
-
Enter probe constants at V3H5 and V3H6
2 - »E« Register entry
3 V3H0 e.g. 0 Select units to be used for calibration: 0 = level, 1 = volume
4 - »E« Register entry
5 V2H7 e.g. 100 Enter tank dia. (for level, in units to be used for calibration)
6 - »E« Register entry
7 V2H8 e.g. 200 Enter tank volume in the units you require
-
If 100 is entered, the system measures in % volume
8 - »E« Register entry
9 V2H0 1 Select horizontal cylinder mode
10 - »E« Press »E« to activate linearization
11 V0H1/V0H2 - Empty/full calibration
12 - »E« Register entry
13 V0H0/V0H9 - V0H0 indicates volume, V0H9 level before linearization
Note!
•
For capacitance or impedance probes a ground tube is necessary or the liquid must
be conducting.
•
If a level calibration is made, V3H0 = 0, the calibration can preceed the linearization.
•
If the calibration is to be in volume units (V3H0 = 1), the sequence of steps must be
exactly as shown above.
•
When V3H0 = 1, the entry at V2H7 fixes the end value for the level display at V0H9.
BA063E41
Units must correspond to
those used for calibration
Diameter: V2H7
Volume V2H8
M
a
x. m
easuri
n
g
rang
e
0%
»Empty«
V0H1, e.g. 20%
10%
80%
100%
Level
(V0H9)
Volume (V0H0)
»Full«
V0H2, e.g.
80%
Fig. 5.2:
Parameters required for
linearization of the Silometer
FMC 671 Z/676 Z
for a horizontal cylinder
Silometer FMC 671 Z/676 Z Chapter 5: Linearization
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