INTRODUCTION
TECHNOLOGY
Step Three
A. Application:
The general purpose ultrasonic switch provides
non-contact level detection up to 26’ or 8m with 3 relays. Each relay
can be configured on a single set point alarm, two latched set points
for automatic fill or empty, two set points for out of bounds alarms or
three set point (relays 1 and 2 only) alternation / duplexing . The
switch is well suited for a wide range of corrosive, waste and slurry
type media, and is broadly selected for atmospheric day tank, pump
lift station and waste sump applications.
B. Part Number:
The part and serial numbers are located on the
wrench flat. Check the part number on the product label and confirm
which of the below model configurations you have purchased:
Part Number
Range
Supply
Mount
LU75-5005
4’ (1.2m)
95-250 VAC
1” NPT
LU75-5065
4’ (1.2m)
95-250 VAC
1” G
LU75-5805
4’ (1.2m)
12-28 VDC
1” NPT
LU75-5865
4’ (1.2m)
12-28 VDC
1” G
LU72-5005
9.8’ (3m)
95-250 VAC
1” NPT
LU72-5065
9.8’ (3m)
95-250 VAC
1” G
LU72-5805
9.8’ (3m)
12-28 VDC
1” NPT
LU72-5865
9.8’ (3m)
12-28 VDC
1” G
LU71-5005
16.4’ (5m)
95-250 VAC
1” NPT
LU71-5065
16.4’ (5m)
95-250 VAC
1” G
LU71-5805
16.4’ (5m)
12-28 VDC
1” NPT
LU71-5865
16.4’ (5m)
12-28 VDC
1” G
LU73-5005
26.2’ (8m)
95-250 VAC
2” NPT
LU73-5065
26.2’ (8m)
95-250 VAC
2” G
LU73-5805
26.2’ (8m)
12-28 VDC
2” NPT
LU73-5865
26.2’ (8m)
12-28 VDC
2” G
C. NEMA 4X Enclosure:
The enclosure has a flip cover with two
1/2” NPT female conduit ports and an internal terminal strip for
wiring. To open the enclosure, you will need a small insertion tool
such as a screwdriver. Insert the tool into the hole located at the
front of the enclosure and gently push on the latching mechanism
to release the cover. Rotate the hinged cover up for 135° access to
the faceplate and terminal strips. Before closing the enclosure,
make sure that the enclosure gasket is properly seated, and
that any conduit fittings, cable connectors or plugs are
installed correctly and sealed.
Step Two
About this Manual:
PLEASE READ THE ENTIRE MANU-
AL PRIOR TO INSTALLING OR USING THIS PRODUCT. This
manual includes information on the LU7_-5_ _5 Ultrasonic Level
Switch from FLOWLINE. Please refer to the part number located
on the switch label to verify the exact model configuration which
you have purchased.
User’s Responsibility for Safety:
FLOWLINE manufac-
tures a broad range of level sensing technologies. While each of
these sensors is designed to operate in a wide variety of applica-
tions, it is the user’s responsibility to select a sensor model that is
appropriate for the application, install it properly, perform tests of
the installed system, and maintain all components. The failure to do
so could result in property damage or serious injury.
Proper Installation and Handling:
Only properly trained
staff should install and/or repair this product. Install the switch with
the included Viton gasket and never overtighten the switch within
the fitting. Always check for leaks prior to system start-up.
Wiring and Electrical:
A supply voltage of 95-250 VAC is
used to power the LU7_-50 _5 switch, and a supply voltage of 12-
28 VDC is used to power the LU7_-58_5 switch. Electrical wiring
of the switch should be performed in accordance with all applica-
ble national, state, and local codes.
Material Compatibility:
The LU7_-5_ _5 enclosure is made
of a flame retardant Polycarbonate (PC/ABS FR). The transducer is
made of Polyvinylidene Fluoride (PVDF). Make sure that the
model which you have selected is chemically compatible with the
application media.
Enclosure:
While the switch housing is liquid-resistant the
LU7_-5 _ _5 is not designed to be operational when immersed. It
should be mounted in such a way that the enclosure and transduc-
er do not come into contact with the application media under nor-
mal operational conditions.
Make a Fail-Safe System:
Design a fail-safe system that
accommodates the possibility of switch and/or power failure.
FLOWLINE recommends the use of redundant backup systems
and alarms in addition to the primary system.
Flammable, Explosive or Hazardous Applications:
The LU7_-5_ _5 should not be used within classified hazardous
environments.
Warning
Always use the Viton gasket when installing the LU7_-5_ _5
switch, and make sure that all electrical wiring of the switch
is in accordance with applicable codes.
LU7_-5_ _1
Shown
RELAY
1
RELAY
2
RELAY
3
L
1
L
2
POWER
Cal. Run
High
Low
Select
EchoSwitch
™