VEGA VEGAFLEX series 80 Centering - Manual (Page 3)

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1 Product description
Centering • for VEGAFLEX series 80
44967-EN-131119
1 Product description
1.1 Overview
If VEGAFLEX sensors with rod or cable version are used in stand-
pipes or bypass tubes, contact with the tube wall must be reliably
avoided.
Spacers or centering weights fix the measuring probe in the middle of
the tube.
Use as few spacers as possible. With rod probes, one spacer at the
probe end is usually sufficient.
Spacers - Plastic (K)
Spacers of plastic are suitable for applications up to 250° C (482° F).
Notches on the 4-arm spacer make it easy to trim down the spacer to
standard diameters. This allows the spacer to be adapted to the tube
diameter.
Spacers - Metal (M)
The metallic spacers are suitable for applications with high tempera-
tures. The elastic arms of the spacer fix the probe in the tube. Select
the spacer according to the tube inner diameter.
Centering weights (G)
The metallic centering weights are suitable for use with cable versions
in standpipes or bypass tubes. Select the centering weight according
to the tube inner diameter.
Gravity weights (S)
Gravity weights can be used in combination with a spacer of plastic or
metal as a centering weight. For this purpose the gravity weight has a
smaller diameter (ø 16 mm) at the lower end, onto which you can plug
a suitable plastic spacer.
1.2 Centerings
These spacers are suitable for bare, metallic probes.
Spacers of plastic are suitable for applications up to 250° C (482° F).
Notches on the 4-arm spacer make it easy to trim down the spacer
to standard diameters. The spacer can thus be adapted to the tube
diameter.
This kind of spacer is slid onto probes and must be fixed with special
retaining rings in the required position. Suitable retaining rings are
included in the delivery.
Use as few spacers as possible. With rod probes, one spacer at the
probe end is usually sufficient.
There are various versions for different rod or cable probes. You can
find out which spacer is suitable for a particular probe in the table at
the end of this chapter.
Spacers - Plastic