VEGA VEGAPULS 66 (≥ 2.0.0 - ≤ 3.8) standpipe ver. 4 … 20 mA_HART four-wire - Manual (Page 24)

6.4 Setup procedure
I n HART-Multidrop mode (several sensors on one input) the address
must be set before continuing with the parameter adjustment. You will
fi
nd a detailed description in the operating instructions manual
" Indicating and adjustment module" or in the online help of PACTware
or DTM.
HART mode
Standard
Address 0
A s VEGAPULS 66 is a distance measuring instrument, the distance
from the sensor to the product surface is measured. To have the real
product level displayed, an allocation of the measured distance to the
percentage height must be made. To carry out this adjustment, the
distance is entered with full and empty vessel. If these values are not
known, an adjustment with the distance values, e.g. 10 % and 90 % is
also possible. Starting point for these distance specifications is always
the seal surface of the thread or flange. With these settings, the real
level is calculated. Furthermore the operating range of the sensor is
limited from maximum to the required range.
T he real product level during this adjustment is not important, because
the min./max. adjustment is always carried out without changing the
product level. These settings can be made ahead of time without the
instrument having to be installed.
Caution:
I
f there is a separation of liquids with different dielectric values in the
vessel, e.g. from condensation, VEGAPULS 66 can detect under
certain circumstances only the medium with the higher dielectric value.
K eep in mind that interfaces can cause faulty measurements.
I f you want to measure the total height of both liquids reliably, please
contact our service department or use an instrument specially
designed for interface measurement.
I n the main menu item "Basic adjustment", the individual submenu
items should be selected one after the other and provided with the
correct parameter values.
S tart your parameter adjustment with the following menu items of the
basic adjustment:
P roceed as follows:
1 M ove from the measured value display to the main menu by
pushing [OK].
Address setting HART-
Multidrop
Parameter adjustment
Carrying out min. ad-
justment
24 VEGAPULS 66 standpipe version • 4 … 20 mA/HART four-wire
6 S et up with the indicating and adjustment module PLICSCOM
28742
-EN
-090305