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Area of application
Functional principle
Voltage supply
Packaging
Conductive probe EL 4 •
•
Order-specific instrument features (HTML)
•
Operating instructions and quick setup guide at the time of ship-
ment (PDF)
•
Order-specific sensor data
Move to "www.vega.com" and enter in the search field the serial
number of your instrument.
Alternatively, you can access the data via your smartphone:
•
Download the VEGA Tools app from the "Apple App Store" or the
"Google Play Store"
•
Scan the Data Matrix code on the type label of the instrument or
•
Enter the serial number manually in the app
3.2
Principle of operation
EL 4 is a point level sensor with partly insulated conductive electrode
for level detection.
EL 4 is very rugged and can be used in all areas of industrial process
technology.
The level switch can be used in conductive liquids such as e.g. water.
Typical applications are overfill and dry run protection.
The conductive measuring principle places no special requirements
on installation. Hence, many different applications can be equipped
with EL 4.
Conductive probes detect the product resistance when their elec-
trodes are covered by the product.
The switching signal is determined by the length or mounting position
of the respective electrode.
A low alternating current flows through the electodes, is measured for
amplitude and phase position by the electronics of the signal condi-
tioning instrument and converted into a switching command.
EL 4 is operated with an external processing unit. The connected
signal conditioning instrument powers EL 4 and provides a switching
signal. A connected device can be activated directly with this switch-
ing command (e.g. a warning system, a PLC, a pump, etc.).
You can find the exact range of the voltage supply in chapter "Techni-
cal data" in the operating instructions manual of the signal condition-
ing instrument.
3.3
Adjustment
The probe does not have its own electronics. The measurement is
carried out via the connected signal conditioning instrument.
3.4
Packaging, transport and storage
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
3 Product description
7
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