Principle Of Operation - Vega VEGADIF 65 Operating Instructions Manual

3 Product description
Application area
10
Instrument type
l
Article number instrument
l
Ex approval
l
Technical data: Measuring range, process pressure, process
l
temperature, signal output, voltage supply, protection, protection
class
Order number, serial number instrument
l
Hardware and software version
l
Article numbers, documentation
l
With the serial number, you can access the delivery data of the
instrument via www.vega.com, "VEGA Tools" and "serial number
search". In addition to the type label outside, you can also find the
serial number on the inside of the instrument.

3.2 Principle of operation

VEGADIF 65 is a differential pressure transmitter for measurement of
flow, level, differential pressure, density and interface. Measured
products are gases, vapours and liquids.
Flow measurement
+
Q ~ ∆p
p
1
Q
1
Fig. 2: Flow measurement with VEGADIF 65 and DP flow element, Q = flow, Δp =
differential pressure, Δp = p
1
Orifice
2
Pitot tube
–
Q ~ ∆p
p
2
Q
- p
1 2
VEGADIF 65 • Foundation Fieldbus
+ –
p p
1 2
2