VEGA VEGAFLEX 81 4 … 20 mA_HART two-wire - Manual (Page 22)

22
4 Mounting
VEGAFLEX 81 • 4 … 20 mA/HART two-wire
41824-EN-130612
1 2 3
Fig. 12: Position of the spacer or centering weight
1 Rod probe with spacer (PEEK)
2 Cable probe with centering weight
3 Spacer (PEEK) on the gravity weight of a cable probe
Note:
Measurement in a standpipe is not recommended for extremely
adhesive products.
Instructions for the measurement:
•
The 100 % point should not be above the upper tube connection
to the vessel
•
The 0 % point should not be below the lower tube connection to
the vessel
•
A false signal suppression with installed sensor is generally rec-
ommended to achieve maximum possible accuracy.
If there is a risk of the cable probe touching the vessel wall during
operation due to product movements or agitators, etc., the measuring
probe should be securely fixed.
In the gravity weight there is an internal thread (M8), e.g. for an eye-
bolt (optional) - (article no. 2.1512).
Make sure that the probe cable is not completely taut. Avoid tensile
loads on the cable.
Avoid undefined vessel connections, i.e. the connection must be
either grounded reliably or isolated reliably. Any undefined change of
this requirement can lead to measurement errors.
Fasten