VEGA VEGAFLEX 86 4 … 20 mA_HART two-wire - Manual (Page 76)

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9 Diagnostics and service
VEGAFLEX 86 • 4 … 20 mA/HART two-wire
41844-EN-130612
In Ex applications only one instrument and one electronics module
with respective Ex approval may be used.
If there is no electronics module available on site, the electronics
module can be ordered through the agency serving you. The electron-
ics modules are adapted to the respective sensor and differ in signal
output or voltage supply.
The new electronics module must be loaded with the default settings
of the sensor. These are the options:
•
In the factory
•
Or on site by the user
In both cases, the serial number of the sensor is needed. The serial
numbers are stated on the type label of the instrument, on the inside
of the housing as well as on the delivery note.
When loading on site, first of all the order data must be downloaded
from the Internet (see operating instructions manual "Electronics
module").
9.6 Exchange or shorten cable/rod
The cable or rod (meas. part) of the probe can be shortened, if neces-
sary. To loosen the rod or cable you need a fork spanner with spanner
width 13.
1. Loosen the rod or cable by applying a fork spanner to the flat
surfaces (SW 13), provide counterforce with another fork spanner
(SW 13)
2. Unscrew the loosened rod or cable manually.
3. Place the enclosed new double washer onto the thread.
Caution:
Make sure that the two components of the double washer remain
together.
4. Screw the new rod and the new cable manually to the thread on
the process fitting.
5. Exert counterforce with the second fork spanner and tighten the
or or cable on the flat surfaces with a torque of 15 Nm (11 lbf ft).
Exchanging the cable/rod