Burkert 8177 Mise En Service page 26

Switch on phase
Address setting HART-
Multidrop
Parameter adjustment
Carrying out min. ad-
justment
LEVEL TRANSMITTER 8177 • 4 ... 20 mA/HART
6 Set up with the indicating and adjustment module
6.4 Setup procedure
After connecting LEVEL TRANSMITTER 8177 to power supply or after
a voltage recurrence, the instrument carries out a self-check for
approx. 30 seconds:
Internal check of the electronics
l
Indication of the instrument type, the firmware as well as the
l
sensor TAGs (sensor designation)
Output signal jumps briefly (approx. 10 seconds) to the set fault
l
current
Then the corresponding current is outputted to the cable (the value
corresponds to the actual level as well as the settings already carried
out, e.g. factory setting).
In HART-Multidrop mode (several sensors on one input) the address
must be set before continuing with the parameter adjustment. You will
find a detailed description in the operating instructions manual of the
"Indicating and adjustment module".
HART mode
Standard
Address 0
As LEVEL TRANSMITTER 8177 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 lower side of the flange, with all other
versions the lower side of the transducer.
The actual level is then calculated on the basis of these entered
values. At the same time, the operating range of the sensor is limited
from maximum range to the requested range.
The 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.
In the main menu item "Basic adjustment", the individual submenu
items should be selected one after the other and provided with the
correct parameter values.
Start your parameter adjustment with the following menu items of the
basic adjustment:
Proceed as follows:
25