Principle Of Operation - Vega VEGADIF 65 Operating Instructions Manual

Type label
Application area
VEGADIF 65 • 4 ... 20 mA/HART
The type label contains the most important data for identification and
use of the instrument:
Sensor 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
The serial number allows you to 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 effective pressure transmitter,
Q = flow, Δp = differential pressure, Δp = p
1
Orifice
2
Dynamic pressure probe
–
Q ~ ∆p
p
2
Q
- p
1 2
3 Product description
+
–
p p
1 2
2
9