VEGA VEGAWELL S 51 - Manual (Page 16)

l
Straining clamp or threaded fitting (optionally
available)
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Documentation
-
this operating instructions manual
Constituent parts
The VEGAWELL S 51 consists of the following
components:
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Transmitter
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Suspension cable
The components are available in different versions.
3
2
1
Fig. 9: Example of a VEGAWELL S 51 with screwed connection
1 Transmitter
2 Suspension cable
3 Threaded fitting
2 .2
Principle of operation
Application area
VEGAWELL S 51 is used for level measurement in
vessels and for gauge measurement in deep wells,
e.g. in water/sewage water applications.
1
Functional principle
The actual sensor element is the CERTEC
®
measuring cell with rugged ceramic diaphragm.
The hydrostatic pressure causes a capacitance
change in the measuring cell via the ceramic
diaphragm. This change is converted into an
appropriate output signal.
Seal concept
As a standard feature, the CERTEC
® measuring
cell is equipped with a lateral, recessed seal.
Instruments with double seal have an additional,
front seal.
Voltage supply
Two-wire electronics 4 … 20 mA for power supply
and measured value transmission over the same
cable.
3 M
ounting
3 .1
General instructions
Suitability for the process conditions
Make sure that all parts of the instrument exposed
to the process, in particular the sensor element,
process seal and process fitting, are suitable for
the existing process conditions. These include
above all the process pressure, process temper-
ature as well as the chemical properties of the
medium.
You can find the specifications in chapter "Tech-
nical data"
or on the type label.
Mounting position
Note the following points when selecting the
installation location.
l
Sideways movements of the transmitter can
cause measurement errors
à Therefore, mount VEGAWELL S 51 in a calm
area or in a suitable protective tube
Pressure compensation
The connection cable has a capillary for the
atmospheric pressure compensation. Therefore
lead the cable end into a dry environment or a
suitable terminal housing.
16 VEGAWELL S 51
Mounting
32946
-01
-101123