SICK LFV 330, Руководство по эксплуатации

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4
M ounting
4
.
1
G eneral instructions
M ake sure that all parts of the instrument exposed to the process
,
in
particular the sensor element
,
process seal and process
fi
tting
,
are
suitable for the existing process conditions
.
T hese include above all
the process pressure
,
process temperature as well as the chemical
properties of the medium
.
Y ou can
fi
nd the speci
fi
cations in chapter
"
T
echnical data "
or on the
type label
.
I n general
,
LFV
330
can be installed in any position
.
T he instrument
simply has be mounted in such a way that the tuning fork is at the
height of the desired switching point
.
T he tuning fork has lateral markings
(
notches
)
that indicate the
switching point with vertical mounting
.
T he switching point refers to
water with the basic setting of the sensitivity switch
≥
0
.
7
g
/
cm
³
(
0
.
025
lbs
/
in
³
).
W hen mounting LFV
330
,
make sure that this marking
is at the height of the requested switching point
.
K eep in mind that the
switching point of the instrument is shifted if the medium has a density
other than water
-
water
1
g
/
cm
³
(
0
.
036
lbs
/
in
³
).
F or products
<
0
.
7
g
/
cm
³
(
0
.
025
lbs
/
in
³
)
and
>
0
.
5
g
/
cm
³
(
0
.
018
lbs
/
in
³
)
the density switch
must be set to
≥
0
.
5
g
/
cm
³
.
K eep in mind that foams with a density
>
0
.
45
g
/
cm
³
(
0
.
016
lbs
/
in
³
)
are
detected by the sensor
.
T his can cause faulty switchings particulary
when used as dry run protection system
.
S uitability for the proc -
ess conditions
S witching point
10
LFV
330
• -
contactless electronic switch
4
M ounting
35914
-
EN
-
091126