VEGA VEGACAL 69 Profibus PA - Manual (Page 8)

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3 Product description
VEGACAL 69 • Profibus PA
31179-EN-130917
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1
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Fig. 2: Layout of the type label (example)
1 Instrument type
2 Product code
3 Approvals
4 Process and ambient temperature, process pressure
5 Power supply and signal output, electronics
6 Protection rating
7 Probe length
8 Order number
9 Serial number of the instrument
10 Material, wetted parts
11 Symbol of the device protection class
12 Reminder to observe the instrument documentation
13 ID numbers, instrument documentation
14 Notified authority for CE marking
15 Approval directives
With the serial number, you can access the delivery data of the instru-
ment via www.vega.com, "VEGA Tools" and "serial number search".
In addition to the type label outside, you can also find the serial num-
ber on the inside of the instrument.
3.2 Principle of operation
VEGACAL 69 is a level sensor with fully insulated double rod probe
for continuous level measurement.
The electronics functions according to the admittance principle
(phase-selective admittance processing).
It is designed for industrial use in all areas of process technology and
can be applied in all areas of industrial process measurement.
Fully insulated double rod probes such as VEGACAL 69 are prefer-
ably used in liquids and non-conductive or non-linear vessels.
Due to the insulation, the probe can be mainly used in aggressive or
corrosive products.
The double probe does not require an additional ground surface.
Probes and measured product form an electrical capacitor. The
capacitance is influenced by three main factors.
Area of application
Functional principle