3
INTRODUCTION
Step
One
About
Powered
Level
Switches:
This
manual
contains
information
on
two
series
of
powered
level
switches;
Ultrasonic
(LVU
‐
150
series),
Tuning
Fork
(LTU
‐
101A
series)
Optic
Leak
(LVF
‐
210A
series)
and
Capacitance
(LVC
‐
152
series).
The
switches
all
feature
two
outputs:
1)
a
4
or
20
mA
current
switch
and
2)
a
60VA
SPST
dry
contact
relay.
All
four
series
are
manufactured
with
thermoplastics,
including
the
cable,
making
them
submersible
in
design
and
ideal
for
corrosive
applications.
Package
the
switches
with
either
Omega
Engineering
controllers
(LVCN
‐
100
series
or
LVCN
‐
120
series)
or
interface
directly
to
another
controller
or
PLC.
Table
of
Contents
Specifications
(Common):
......................................................................................................................................
4
Ultrasonic
Switch
(LVU
‐
150
Series):
...........................................................................................................
5
Tuning
Fork
(LTU
‐
101A
Series):
..................................................................................................................
6
Maintenance
Alarm:
......................................................................................................................
7
Optic
Leak
Detection
(LVF
‐
210A
series):
....................................................................................................
8
Capacitance
Switch
(LVC
‐
152
Series):
......................................................................................................
10
Safety
Precautions:
..............................................................................................................................................
12
Make
a
Fail
‐
Safe
System:
..........................................................................................................................
13
Installation:
..........................................................................................................................................................
14
Through
Wall
Installation:
........................................................................................................................
14
Top
Wall
Installation:
...............................................................................................................................
14
Electrical:
..............................................................................................................................................................
15
Wiring:
..................................................................................................................................................................
16
Wiring
to
a
Omega
Engineering
Controller:
.............................................................................................
16
Wiring
the
Relay
Output:
.........................................................................................................................
17
Wiring
as
a
P
‐
Channel
or
N
‐
Channel
Output:
..........................................................................................
18
Maintenance:
.......................................................................................................................................................
19
Cleaning
procedure:
.................................................................................................................................
19
LTU
‐
101A
Series
Maintenance
Alarm:
.....................................................................................................
19
Testing
the
Installation:
...........................................................................................................................
20
