Vega VEGADIF 65, Руководство по эксплуатации

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D
ensity measurement
=
∆p
h g
+
–
h
1
F ig .
5
: D ensity measurement with VEGADIF
65
, h = de fi ned mounting distance ,
Δ
p = di ff erential pressure
,
ρ
= density of the medium
,
g = acceleration of gravity
1
VEGADIF
65
I nterface measurement
1
+
–
h
2
3
F
ig
.
6
: I
nterface measurement with
VEGADIF
65
1
VEGADIF
65
2
L
iquid with highest density
3
L iquid with lowest density
A
metallic measuring cell is used as sensor element
. T
he process
pressures are transmitted via the separating diaphragms and fi lling oils
to a resistance measuring bridge ( semi - conductor technology ).
T he di ff erence of the existing pressures generates a change of the
bridge voltage . T his change is measured , further processed and
converted into a corresponding output signal .
F
unctional principle
12
VEGADIF
65
• F oundation F ieldbus
3
P roduct description
36130
-
EN
-
110510