Where Do I Find Everything I Need for
Process Measurement and Control?
OMEGA…Of Course!
Shop online at omega.com
TEMPERATURE
Thermocouple, RTD & Thermistor Probes,
Connectors, Panels & Assemblies
Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers
User’s Guide
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ PRESSURE, STRAIN AND FORCE
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Transducers & Strain Gauges
Load Cells & Pressure Gauges
Displacement Transducers
Instrumentation & Accessories
FLOW/LEVEL
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Rotameters, Gas Mass Flowmeters & Flow Computers
Air Velocity Indicators
®
Turbine/Paddlewheel Systems
Totalizers & Batch Controllers
e-mail: [email protected]
pH/CONDUCTIVITY
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ pH Electrodes, Testers & Accessories
Benchtop/Laboratory Meters
Controllers, Calibrators, Simulators & Pumps
Industrial pH & Conductivity Equipment
DATA ACQUISITION
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Data Acquisition & Engineering Software
Communications-Based Acquisition Systems
Plug-in Cards for Apple, IBM & Compatibles
Datalogging Systems
Recorders, Printers & Plotters
HEATERS
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Heating Cable
Cartridge & Strip Heaters
Immersion & Band Heaters
Flexible Heaters
Laboratory Heaters
ENVIRONMENTAL
MONITORING AND CONTROL
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Metering & Control Instrumentation
Refractometers
Pumps & Tubing
LVCN700 Series
Air, Soil & Water Monitors
Industrial Water & Wastewater Treatment
pH, Conductivity & Dissolved Oxygen Instruments
M-4465/0707
Multi-Point Ultrasonic Level Switch
T h e s e p r o d u W c t A s R a N r e I N n G o t : d e s i g n e d f o r u s e i n , a n d s h o u l d n o t b e u s e d f o r , p a t i e n t c o n n e c t e d a p p l i c a t i o n s .
t a i n s , a n d r e s e r v e s t h e r i g h t t o a l t e r s p e c i f i c a t i o n s w i t h o u t n o t i c e .
w r i t t e n c o n s e n t o f O
r r o r s i t c o n -
T h e i n f o r m a t i o n c o n t a i n e d i n t h i s d o c u m e n t i s b e l i e v e d t o b e c o r r e c t b u t O M E G A E n g i n e e r i n g , I n c . a c c e p t s n o l i a b i l i t y f o r a n y e
p r i o r
r e p r o d u c e d , t r p a h n o s l t a o t c e o d p , i o e r d r , e d u c e
a p p r o p r i a t e d e v i c e u p o n c e r t i f i c a t i o n .
©
C o p y r i g h t 1 9
p u r s u i n g c e r t i f i c a t i o n o f i t s p r o d u c t s t o t h e E u r o p e a n N e w A p p r o a c h D i r e c t i v e s . O M E G A w i l l a d d t h e C E m a r k t o e v e r y
I t i s t h e p o l i c y o f O M E G A t o c o m p l y w i t h a l l w o r l d w i d e s a f e t y a n d E M C / E M I r e g u l a t i o n s t h a t a p p l y
O M E G A i s a r e g i s t e
T h i s a f f o r d s o u r c u s
O M E G A ’ s p o l i c y
. O M E G A i s c o n s t a n t l y
p r o b l e m s r e l a t i v e
R e 3 p . a i r i n s t r u c t i o n
w a r r a n t y
M o 2 d . e l a n d s e r i a l n
w a s P U R C H A S E D
O . P . n 1 u . m b e r u n d e r w
p r o b l e m s r e l a t i v e t o t h e p r o d u c t .
R e 3 p . a i r i n s t r u c t i o n s a n d / o r s p e c i f i c
M o 2 d . e l a n d s e r i a l n u m b e r o f p r o d u c t , a n d
o f t h e r e p a i r
O . P . n u 1 m . b e r t o c o v e r t h e C O S T
e - m a i l : s a l e s @ o m e g a . c o . u k
e e i n o E T l n l g F l r a n d : 0 8 0 0 - 4 8 8 - 4 8 8
A F X : + 4 4 ( 0 ) 1 6 1 7 7 7 - 6 6 2 2
l : e + T 4 4 ( 0 ) 1 6 1 7 7 7 - 6 6 1
M 4 4 5 E X , E n g l a n d
, a n d
,
1
i n f o r m a t i o n a v a i l a b l e B E F O R E c o n t a c t i n g O M E G A :
f o r c u r r e n t r e p a i r c h a r g e s . H a v e t h e f o l l o w i n g
A R R A N N T Y O N F - W O R
O M E G A :
N o r t h b a n i k e d t , i f I r l a m , M a n c I h S e O s t 9 e 0 r 0 2 C e r
O n e O m e g a D r i v e , R i v e r U B n e n i t d e T d K i n g d o m :
l o w i n g i n f o r m a
e
e c h n o l o g y C e n t r
c o n s u l A t I O R S M R , E E P G A
R E T U R N S , p A l e R W a R s e A h N F a O T v Y R e t h e f o l -
e - m a i l : i n f o @ o m e g a . d e
e e i n o G T l e l r F m r a n y : 0 8 0 0 6 3 9 7 6 7 8
A F X : + 4 9 ( 0 ) 7 0 5 6 9 3 9 8 - 2 9
l : e + T 4 9 ( 0 ) 7 0 5 6 9 3 9 8 - 0
D a i m l e r s t r a s s e 2 6 , D - 7 5 3 G 9 2 e D r m e c a k n e n y p / f A r u s t r i a :
e - m a i l : i n f o @ o m e g a s h o p . c z
e e : 0 8 o 0 T l 0 l - F 1 - r 6 6 3 4 2
4 2 + 0 : X ( 0 A ) F 5 9 6 3 1
b r e a k a g e i n t r a n
T h e p u r c h a s e r
a n y c o r r e s p o n d
Y S ) . T D h E e L A a s s i g n e d A
N U M B E R F R O M
R E T U R N I N G A N
o n n , G e r m a n y
V O I D P R O C E S S I N G
T M A E R N T ( I N O V R I C D E E D R E T P O A
’ S C U S T O M E R S E R
A I N A N A U T H O R I Z E D R E T U R N ( A R )
D i r e c t a l l w a r r a
I N / Q U I R I E S
R E T U R N R E Q U E S T S
4 1 1 1
1 8 9 9
4 2 + 0 : l ( e 0 T ) 5 9 6 3 1
.
s u c h a m a n n e r
F r y s t a t s k a 1 8 4 , 7 3 3 0 1 K a C r v z i e n c a h , C R z e e c p h u R b e l p i u c b : l i c
a n y m o l r i a b f s i s l i e t l y m o r r a d h a m a g e w h O d l a M t o s h E o G e v A e r a r i s i n g o
D / I S C L A I M R E A R A l N a n T g Y u a g e , a n i d n a o d u d r i t b i o a s n i a c l l W y
m e d i c a l a p p l i c a
d n a
O M E G A
, p u r c h a s e r w i l l i n d e m n i f y
a s s u m e s O n , M o E r e G s A p o n s i b i l i t y a s s e t f o r t h
o p e :
v i c i S n e g r E u r
,
a p p l i c a t i o n s o r u
C o m p o n e n t ” u n
i n f o @ o m e g a . m x
A F X : ( 0 0 1 ) 2 0 3 - 3 5 9 - 7 8 0 7
e - m a i l : e s p a n o l @ o m e g a . c o m
E n E s p a n o l : ( 0 0 1 ) 2 0 3 - 3 5 M 9 - 7 e 8 x 0 3 i c o
e t n n d e t i d o t o n s i b e u s e d , O n M o r E G s h A a l l i t b e u s e d : ( 1 ) a s a “ B a s i C c O N D I T I O N S :
c i a l d a m a g e s .
u p o n w h i c h l i a
i n d e m n i f i c a t i o n
E n g i n e e r i n g S e r v i c e : 1 - 8 0 0 - 8 7 2 - 9 4 3 6 / 1 - 8 0 0 - U S A - W H E N
C u s t o m e r S e r v i c e : 1 - 8 0 0 - 6 2 2 - 2 3 7 8 / 1 - 8 0 0 - 6 2 2 - B E S T
S a l e s S e r v i c e : 1 - 8 0 a 0 n - 8 d 2 6 C - 6 U a 3 S 4 n 2 A a / d a 1 - : 8 0 0 - T C - O M E G A
S M
S M
S M
, n e g l i g e n c e ,
, w h e t h e r b a s e d o n c o n t r a c t , w a r r a n t y
t o t a l l i a b i l i t y o
: T h e r e m e d i e s o f I p O T u N A r c O h F a s L e I A r s B e I L t I f T o Y r t h C h L e A r I e M i n E a D r . e L e I M x c I
T I R C A U L A R P U R P O S E A R E H E R E B Y D A I B S I - L I T Y A N D F I T N E S S F O R A R W A R P A N T Y O F M E
F o r i m m e d i a t e t e c h n i c a l o r a p p l i c a t i o n a s s i s t a n c e :
A R R A N T I E S I N C L U D I N G A N Y O T F T I T L E , A N D A L L I M P L I E D W
E X P R E S S E D O
T S 0 E V E R ,
I O T N A S O F A N Y K I N D W H A
A R R A N T I E S O R R E P R E S E N T O M E G A M A K E
t e n . O M E G A w
e m a i l : c a n a d a @ o m e g a . c a
f r o m t h e u s e o f
A F X : ( 5 1 4 ) 8 5 6 - 6 8 8 6
a s s u m e s r e s p o
e l T : ( 5 1 4 ) 8 5 6 - 6 9 2 8
, O M E G A n e i t h e r
c o s n ’ t r o l . O M E G A
O M E G A i s p l e a
5 A 1
L a v a l ( Q u e b e c ) H 7 L
9 7 6 B e r
C o m p o n e n t s w h
i m p r o p e r s p e c i f
s h o w s e v i d e n c e
g a r
C a n a d a :
e - m a i l : i n f o r @ o m e g a . c o m
F a x : ( 2 0 3 ) 3 5 9 - 7 7 0 0
A R R A N T Y i s V O I D i f t h e u r n i z i t e d s h m o w o d s i f e i c v a i d t i e
l i m i t e d t o m i s h a
e l T : ( 2 0 3 ) 3 5 9 - 1 6 6 0
, o r u n a u t h o -
, i n c l u d i n g b u t n o t
A R W R s ’ A N T Y d o O e M s E n G o t A a p p l y t o
t h f e i u n i t i s f O o u M n E d G t A o , b e d e f e e c x t i a v m e i n t a w t i i o l l n b b e y
D e p a r t m e n t w i l l
d , C T 0 6 S 9 t 0 a 7 m - 0 f o 0 4 r 7 i e d t i f
1 C e r I S O 9 0 0
O n e O m e g a D r i v e , B o x U 4 S 0 4 A 7 :
t h A m e r i c a v : i c i S n e g r N o r
. o m e g a . c o m h t t p : / / w w w i n f o @ o m e g a . c o m
C u s ’ s t o m e r O S e M r v E i G c e A
I f t h e u n i t s h o u l
c s ’ u s t o m e r s r e c t h e i a v t e O m M a E x G i m A u m
t o c o v e r h a n d l i n g a n d s h i p p i n g t i m o e n . e T h ( 1 i s ) e y n e s a u r r e p s r o d u c p t e w r i o a d r r t a o n t t h y e n o
r r a a n t y a d E d G M s A a n W a d d i t i o n a l o n e ( 1 ) m f r o o n m t h d g a r t a e c e o f 1 p 3 u r m c h o a n s e t . h p s O e r i o d o f
O M E G A E N G I N
I n t e r n e t e - m a i l
O n - L i n e S e r v i O c e M E G A n e t
S M
O M E G A
®
D / I S C L A I M E A R R W R A N T Y
o
T M
Download from Www.Somanuals.com. All Manuals Search And Download.
INTRODUCTION
TECHNOLOGY
Step Two
Step Three
A. Application: The general purpose ultrasonic level switch pro-
vides 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.
About this Manual: PLEASE READ THE ENTIRE MANU-
AL PRIOR TO INSTALLING OR USING THIS PRODUCT. This
manual includes information on the LVCN700 series
Ultrasonic Level Switch. Please refer to the part number
located on the switch label to verify the exact model con-
figuration which you have purchased.
User’s Responsibility for Safety: Omega manufactures a
broad range of level sensing technologies. While each of these sen-
sors is designed to operate in a wide variety of applications, 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 sys-
tem, and maintain all components. The failure to do so could result
in property damage or serious injury.
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
LVCN704
Range
Supply
Mount
1” NPT
1” NPT
1” NPT
1” NPT
1” NPT
1” NPT
1” NPT
1” NPT
1” NPT
1” NPT
1” NPT
1” NPT
2” NPT
2” NPT
2” NPT
2” NPT
4’ (1.2m)
4’ (1.2m)
4’ (1.2m)
95-250 VAC
95-250 VAC
12-28 VDC
12-28 VDC
95-250 VAC
95-250 VAC
12-28 VDC
12-28 VDC
95-250 VAC
95-250 VAC
12-28 VDC
12-28 VDC
95-250 VAC
95-250 VAC
12-28 VDC
12-28 VDC
LVCN704G
LVCN704-DC
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.
LVCN704G-DC 4’ (1.2m)
LVCN709
9.8’ (3m)
9.8’ (3m)
9.8’ (3m)
LVCN709G
LVCN709-DC
Wiring and Electrical: A supply voltage of 95-250 VAC is
used to power the Ultrasonic switch, and a supply voltage of 12-28
VDC is used to power the optional DC version of the LVCN700
series Ultrasonic switch. Electrical wiring of the switch should be
performed in accordance with all applicable national, state, and
local codes.
LVCN709G-DC 9.8’ (3m)
LVCN716
16.4’ (5m)
16.4’ (5m)
16.4’ (5m)
LVCN716G
LVCN716-DC
LVCN716G-DC 16.4’ (5m)
LVCN726
26.2’ (8m)
26.2’ (8m)
26.2’ (8m)
Material Compatibility: The LVCN700 series enclosure is
made of a flame retardant Polycarbonate (PC/ABS FR). The trans-
ducer is made of Polyvinylidene Fluoride (PVDF). Make sure that
the model which you have selected is chemically compatible with
the application media.
LVCN726G
LVCN726-DC
LVCN726G-DC 26.2’ (8m)
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.
Enclosure: While the LVCN700 series housing is liquid-resis-
tant, the unit 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.
OMEGA recommends the use of redundant backup systems and
alarms in addition to the primary system.
Flammable, Explosive or Hazardous Applications:
The LVCN700 series should not be used within classified haz-
LVCN726
Shown
L
1
L
2
RELAY RELAY RELAY POWER
1
2
3
Warning
Cal.
Run
Always use the Viton gasket when installing the Ultrasonic
switch, and make sure that all electrical wiring of the switch
is in accordance with applicable codes.
High
Low
Select
Download from Www.Somanuals.com. All Manuals Search And Download.
PREPARATION
CALIBRATION
Step Four
Step Five
A. Supply Voltage: The power supply voltage should never exceed
the maximum rating of 250 VAC for the LVCN700 series AC switch
or 28 VDC for the LVCN700-DC series switch.
A. Introduction: The switch has two modes, the RUN and CAL
modes. In the RUN mode, the switch is operational and the relay(s)
will energize or de-energize at the calibrated set point distances. In the
CAL mode, the relay set point distances and states may be target-cal-
ibrated into memory. The switch arrives from the factory without
any preset calibration. Each relay channel may be user calibrated
into one of the following configurations; 1) high or low level alarm,
2) high and low level out of bounds alarm, 3) automatic fill or empty,
or 4) duplexing/Alternating.
LVCN700 series
shown
LVCN700-DC series
shown
HOT
Positive
NEUTRAL
Negative
VAC
VDC
INPUT
INPUT
L
1
L
2
(+) (-)
POWER
VAC
POWER
VDC
High or Low Level Alarm: The high or
low level alarm is programmed with a sin-
gle set point at the desired tank level.
B. Conduit Entrance: The enclosure has two 1/2” NPT female
conduit ports for routing of the switch
Energize
supply and relay circuit wiring. Do not
run mixed AC and DC voltages
through the same conduit port. Route
the supply voltage circuit through one
port and the relay circuit(s) through the
opposite port.
Configured as a high alarm, the relay will
Relay
Port
Supply
Port
De-energize
energize if the level rises above the set
1/2 NPT
Conduit
point. Configured as a low level alarm, the
relay will energize if the level falls below
the set point.
High Alarm Shown
C. Relay Fail-Safe Design:
High and Low Level Out of Bounds
Alarm: Programmed with two set points,
the high and low level out of bounds alarm
protects the top of the tank from overspill
and the bottom of the tank from run-dry. If
the level rises above or falls below the set
points, the relay will energize. The relay
will remain de-energized as long as the level
is in between the set points.
The switch has (3) relay channels. Each relay is a SPDT
(single pole, double throw) type rated at 60 VA. Normally
open (NO) or normally closed (NC) operation is user
selected based on the desired system control and fail-safe
logic. Always design a fail-safe system that accommo-
RELAY
1
Energize
De-energize
dates for the possibility of relay and/or power failure. The "nor-
mal" relay state is where the relay coil is de-energized and the Red
relay LED is OFF. Therefore, if power is cut OFF to the switch it will
de-energize the relay. Make sure that the de-energized state is the safe
state in your system design. As such, if switch power is lost, a pump
will turn OFF if it is connected to the normally open side of the relay.
Energize
Automatic Fill or Empty: Programmed
with two set points, the latched automatic
fill or empty will control a pump or valve.
When the level reaches the energize set
point, the latching relay will energize, and
remain energized until the level reaches the
de-energize set point.
E. Maximum Applied Range: Individual or cumulative effects of
agitation, vapor or foam can reduce the overall quality of signal return
and shorten the maximum applied range of the switch. To determine
the maximum applied range of the switch in your application, refer to
the below derating chart.
De-energize
0%
100Khz
Energize
50Khz
(Auto-Fill Shown)
Duplex/Alternate: Programmed with
three set points and two relays, duplexing
will automatically fill or empty the tank
with two pump alternation for maintenance
and lead-lag control for back up operation.
When the level reaches the energize set
point, the latching relay will energize, and
remain energized until the level reaches the
de-energize set point. Each time the level
50%
Energize
(Backup)
High High
Energize
(Primary)
High
100%
De-energize (All) Low
0
1
2
3
4
5
6
7
8
9
10
Ultrasonic Derating Chart
reaches the energize set point, the relays will alternate. If the level
reaches the back-up energize set point, both relays will energize until
the level reaches the de-energize set point. Alternation will automati-
cally fill or empty the tank with two pumps switching after each cycle.
LVCN704/709
Agitation = 1-3 @ 100 kHz
Vapor
Foam
LVCN716/726
Agitation = 1-3 @ 50 kHz
= 4-6 @ 100 kHz
= 5-6 @ 100 kHz
Vapor
Foam
= 3-5 @ 50 kHz
= 4-6 @ 50 kHz
Download from Www.Somanuals.com. All Manuals Search And Download.
CALIBRATION
PROGRAMMING
Step Six
Step Seven
A. Programming a Relay Channel: The relay set points are tar-
get calibrated using the appropriate HIGH and/or LOW two key-
stroke button sequence at each target distance (D1=distance one, D2
= distance two and D3 = Distance 3) per the following logic.
B. Calibration Tools: To target calibrate the switch set points, you
will need the appropriate power supply (95-250 VAC or 12-28 VDC
for DC version), tape measurer, flat reflective target such as a wall, and
optional Omega box insert for use as a product holder.
Relay Function
Button Sequence @ Distance(s)
High-High (D1)
Low-Low (D1)
High-High (D1) & Low-Low (D2)
Low-High (D1) & High-Low (D2)
High-Low (D1) & Low-High (D2)
C. Off Tank Target Calibration: The switch’s relay set points may
be target calibrated OFF the tank or installed ON the tank. Generally,
target calibration is done OFF the tank because it is easier to move the
switch rather than raise or lower the liquid level to the desired relay
set point distances. Locate a flat reflective calibration target such as a
wall. Place the switch perpendicular to the target in the provided
1. High level alarm
2. Low level alarm
3. Out of bounds alarm
4. Automatic fill
5. Automatic empty
6. Duplexing/Alternation [High-Low (D1) & Low-High (D2), Rly 1]
& [High-High (D3), Rly 2]
Omega box insert or equivalent
Set Point
holder. Alternatively, you may
hold the switch with your hand,
but it is critical that prior to
entering any relay set point dis-
tances, the product is held
steady and perpendicular to the
target for at least 15 seconds. If
calibrating against a wall, it is
recommended that the switch be
elevated 3’ (1m) off the ground
by placing it on a table or equiv-
alent flat surface.
Calibration
After the second High or Low button key-stroke, the Power
LED will flash from AMBER to GREEN indicating that the set
point has been accepted into memory. If all three Relay LEDs
flash RED and remain ON, then the button sequence was done
incorrectly. If so, press SELECT to return to the appropriate
relay channel and erase the previous set points per the CALI-
BRATION section (Step #6-F) of this manual. Then re-program
the channel with the correct button sequence.
Set Point
Distance
Box
Insert
Tape
Table
Target
Wall
B. Programming a High or Low Level Alarm: After having
powered the switch with the appropriate supply voltage, entered the
CAL mode, selected a relay channel and erased any previously input
set points, follow the below procedure (LOW level alarm instructions
are in parenthesis):
D. Entering the CAL Mode: To enter the CAL mode, you must
first disable the calibration lock out feature. To do so, press and hold
the SELECT button down. While holding the SELECT button, slide
the RUN/CAL switch LEFT to the CAL position, and then release
the SELECT button. At this point, all relay LEDs should be OFF.
1. Stretch the tape measurer out to the appropriate distance in
between the switch and target.
2. Position the switch at the desired HIGH (LOW) set point distance
defined as the air gap space between the transducer and the target.
Make sure that the switch is stationary and perpendicular to
the target before continuing.
Cal.
Run
High or Low Level Alarm
3. Press the HIGH (LOW) button
High
Low
Programming
for the first key-stroke and the
Select
Relay LED will blink once.
4. Press the HIGH (LOW) button
Set Point
E. Selecting a Relay Channel: After entering the CAL mode,
press the SELECT button once and the Relay 1 LED will turn ON
indicating that the channel is now active for set point calibration.
Press the SELECT button again until the desired Relay channel
becomes active.
Box
Insert
again for the second key-stroke
and the Relay LED will blink
twice.
Tape
Distance
Table
5. The Power LED will flash from
AMBER to GREEN when the
set point has been accepted into
memory.
Target
Wall
L
1
L
2
RELAY RELAY
RELAY
1
POWER
2
3
6. Press SELECT to program the next relay channel or slide the
RUN/CAL switch RIGHT to exit the CAL mode.
F. Erasing a Relay Channel: With the exception of new prod-
ucts out of the box, all previously entered relay set points should be
erased prior to new programming with the following procedure:
High Level Alarm
Low Level Alarm
1. Enter CAL mode and SELECT the relay channel to erase.
2. Simultaneously press and hold down both the HIGH and LOW
buttons, and then release the buttons.
Energize
De-energize
3. The Relay and Power LEDs will blink in an alternating pattern
indicating that the relay set points have been erased.
4. At this point, once the LED becomes solid, you may either re-pro-
gram the channel with new set points or leave it inactive.
De-energize
Energize
Download from Www.Somanuals.com. All Manuals Search And Download.
PROGRAMMING
PROGRAMMING
Step Eight
Step Nine
D. Programming Automatic Fill: After having powered the
switch with the appropriate supply voltage, entered the CAL mode,
selected a relay channel and erased any previously input set points,
follow the below procedure:
C. Programming a High and Low Level Out of Bounds
Alarm: After having powered the switch with the appropriate supply
voltage, entered the CAL mode, selected a relay channel and erased
any previously input set points, follow the below procedure:
1. Stretch the tape measurer out to the appropriate distance in
between the switch and target.
1. Stretch the tape measurer out to the appropriate distance in
between the switch and target.
Out of Bounds
Automatic Fill
2. Position the switch at the desired LOW
set point distance defined as the greater
of the two air gap spaces between the
transducer and the target. Make sure
2. Position the switch at the desired HIGH
set point distance defined as the lesser
of the two air gap spaces between the
transducer and the target. Make sure
De-energize
Energize
that the switch is stationary and per-
that the switch is stationary and per-
pendicular to the target before con-
tinuing.
pendicular to the target before con-
De-energize
tinuing.
3. Press the LOW button for the first key-
3. Press the HIGH button for the first key-
Energize
Energize
stroke and the Relay LED will blink
once.
stroke and the Relay LED will blink
once.
4. Press the HIGH button for the second key-stroke and the Relay
LED will blink twice.
4. Press HIGH again for the second key-stroke and the Relay LED
will blink twice.
5. The Power LED will flash from AMBER to GREEN when the
LOW set point has been accepted into memory.
5. The Power LED will flash from AMBER to GREEN when the
HIGH set point has been accepted into memory.
6. Position the switch at the desired HIGH set point distance defined
as the lesser of the two air gap spaces between the transducer and
the target. Make sure that the switch is stationary and perpen-
dicular to the target before continuing.
6. Position the switch at the desired LOW set point distance defined
as the greater of the two air gap spaces between the transducer and
the target. Make sure that the switch is stationary and perpen-
dicular to the target before continuing.
7. Press the HIGH button for the first key-stroke and the Relay LED
will blink three times.
7. Press LOW for the first key-stroke and the Relay LED will blink
three times.
8. Press the LOW button for the second key-stroke and the Relay
LED will blink four times.
8. Press LOW for the second key-stroke and the Relay LED will
blink four times.
9. The Power LED will flash from AMBER to GREEN when the
HIGH set point has been accepted into memory.
9. The Power LED will flash from AMBER to GREEN when the
LOW set point has been accepted into memory.
10. Press SELECT to program the next relay channel or slide the
RUN/CAL switch RIGHT to exit the CAL mode.
10. Press SELECT to program the next relay channel or slide the
RUN/CAL switch RIGHT to exit the CAL mode.
Automatic Fill
Programming
High and Low Level
Out of Bounds Alarm Programming
Low
Set Point
Low
Set Point
High
Set Point
High
Set Point
Box
Box
Insert
Distance
Insert
Distance
Tape
Tape
Distance
Distance
Table
Table
6
2
2
6
Target
Wall
Target
Wall
Download from Www.Somanuals.com. All Manuals Search And Download.
PROGRAMMING
PROGRAMMING
Step Ten
Step Eleven
E. Programming Automatic Empty: After having powered the
switch with the appropriate supply voltage, entered the CAL mode,
selected a relay channel and erased any previously input set points,
follow the below procedure:
Programming Duplexing Pump Control: After having powered
the switch with the appropriate supply voltage, entered the CAL
mode, selected relay channel 1 and erased any previously input set
points, follow the below procedure:
1. Stretch the tape measurer out to the appropriate distance in
between the switch and target.
1. Stretch the tape measurer out to the appropriate distance in
between the switch and target.
2. Position the switch at the desired HIGH
set point distance defined as the lesser
of the two air gap spaces between the
transducer and the target. Make sure
that the switch is stationary and per-
pendicular to the target before con-
tinuing.
Automatic Empty
Duplex
2. Position the switch at the desired HIGH
set point distance defined as the lesser
of the two air gap spaces between the
Energize
transducer and the target. Make sure
that the switch is stationary and per-
pendicular to the target before con-
tinuing.
(Backup)
High High
Energize
Energize
(Primary)
High
3. Press the HIGH button for the first key-
stroke and the Relay LED will blink
once.
De-energize (All) Low
3. Press the HIGH button for the first key-
De-energize
stroke and the Relay LED will blink
once.
4. Press the LOW button for the second key-stroke and the Relay
LED will blink twice.
4. Press the LOW button for the second key-stroke and the Relay
LED will blink twice.
5. The Power LED will flash from AMBER to GREEN when the
HIGH set point has been accepted into memory.
5. The Power LED will flash from AMBER to GREEN when the
HIGH set point has been accepted into memory.
6. Position the switch at the desired LOW set point distance defined
as the greater of the two air gap spaces between the transducer and
the target. Make sure that the switch is stationary and perpen-
dicular to the target before continuing.
6. Position the switch at the desired LOW set point distance defined
as the greater of the two air gap spaces between the transducer and
the target. Make sure that the switch is stationary and perpen-
dicular to the target before continuing.
7. Press the LOW button for the first key-stroke and the Relay LED
will blink three times.
8. Press the HIGH button for the second key-stroke and the Relay
LED will blink four times.
7. Press the LOW button for the first key-stroke and the Relay LED
will blink three times.
9. The Power LED will flash from AMBER to GREEN when the
LOW set point has been accepted into memory.
8. Press the HIGH button for the second key-stroke and the Relay
LED will blink four times.
10. Press SELECT to program relay channel 2.
Duplex Programming
(Primary)
9. The Power LED will flash from AMBER to GREEN when the
LOW set point has been accepted into memory.
Low
Set Point
High
Set Point
10. Press SELECT to program the next relay channel or slide the
RUN/CAL switch RIGHT to exit the CAL mode.
Box
Insert
Distance
Tape
Distance
Automatic Empty
Programming
Table
2
6
Target
Wall
Low
Set Point
High
Set Point
Box
Insert
Distance
Tape
Distance
11. Position the switch at the desired HIGH HIGH set point distance
defined as the air gap space between the transducer and the target.
Make sure that the switch is stationary and perpendicular to
the target before continuing.
2
Table
6
Target
Wall
Download from Www.Somanuals.com. All Manuals Search And Download.
PROGRAMMING
INSTALLATION
Step Twelve
Step Thirteen
Programming Duplex Pump Control (continued):
Do not install at
angle relative
to the liquid
Do not install with-
in 3” of
tank side wall
Duplex Programming
(Backup)
Set Point
Box
Insert
Tape
Distance
Table
Do not install
with objects
in the beam
Do not install
in applications
with vacuum
11
Target
Wall
VACUUM
12. Press the HIGH button for the first key-stroke and the Relay LED
will blink once.
13. Press the HIGH button again for the second key-stroke and the
Relay LED will blink twice.
Warning
Install the appropriate installation fitting. Make sure that
the fitting and switch threads are not damaged or worn.
Install the switch with the included Viton mounting gasket.
Hand tighten the switch within the fitting. Perform an
installed leak test under normal process conditions prior to
system start up.
14. The Power LED will flash from AMBER to GREEN when the set
point has been accepted into memory.
15. Press the SELECT switch repeatedly until BOTH LEDs for Relay
1 and Relay 2 are ON (after Relay 3).
16. Press the HIGH button for the first key-stroke and Relay LED will
blink once.
17. Press the HIGH button again for the second key-stroke and Relay
LED will blink twice.
Gasket A. Fitting Selection: Check the switch part number
to determine the required fitting mount size and
thread type. The switch is commonly installed in
tank adapters, flanges, brackets or stand pipes.
18. Press SELECT to program the next relay channel or slide the
RUN/CAL switch RIGHT to exit the CAL mode.
Note: The duplexing mode can be disabled by repeating Steps #15-18
and pressing the LOW button instead of the HIGH button in the
HIGH/HIGH combination.
1. Adapter: Select a tank adapter fitting with
Adapter
minimal height so as to ensure that the
installed transducer will not be substantially
elevated into the fitting. Avoid tank adapter
styles with threads and/or pipe stops forward
of the installed transducer.
Programming Alternating Control Only:
1. To program the switch for alternating
Alternating
control only without the lead-lag func-
tion, follow the instructions for
Programming Duplexing Pump Control
(Steps 11 and 12). The difference
Flange
on Riser
2. Flange: Tall flanges with narrow risers
impede the acoustic signal. Select a fitting
with the right riser height versus inner diame-
ter geometry. The switch may be elevated up
to 12” (30 cm) in a 6” (15 cm) riser, 8” (20
cm) in a 4” (10 cm) riser and 3” (7.6 cm) in a
2” (5 cm) riser.
between Duplexing and Alternation is
High High
the location of the Relay 2 set point. Set
Relay 2 close to the deadband without
crossing into the deadband and above
the highest level of expected liquid.
Energize
High
Height
Inner Diameter
Bracket
De-energize (All) Low
Note: The alternation mode can be disabled
3. Bracket: A LVM-30 side mount bracket or
equivalent can be used for open tank top
installations against the side wall.
by repeating Steps #15-18 and pressing the
LOW button instead of the HIGH button in the HIGH/HIGH combi-
nation.
Alternating Programming
(Backup)
Stand Pipe
4. Stand Pipe: A stand pipe may be
used to dampen turbulence or separate
surface foam. Select a 2” or larger
pipe for model LVCN704/709. Select
Set Point
Box
Ventilation
Hole
Dead Band
a
3” or larger pipe for model
Insert
Tape
Distance
Highest
Liquid Level
LVCN716/726. The pipe length
should run the measurement span. Cut
a 45° notch at the bottom of the pipe
and drill a 1/4” pressure equalization
hole high in the dead band.
Table
2"/3" Minimum
Diameter
2
Target
Wall
Lowest
Liquid Level
Download from Www.Somanuals.com. All Manuals Search And Download.
WIRING
TROUBLESHOOTING
Step Fourteen
Step Fifteen
A. Power LED SOLID GREEN in RUN Mode: During normal
operation in the RUN mode, the Power LED will remain solid
GREEN indicating that the switch has power and is tracking the level.
The RED Relay LEDs will be ON or OFF as programmed per the cur-
rent level state.
Warning
To prevent damaging the relays, the use of an appropriate
motor starter or secondary relay is ALWAYS recommended
when actuating pumps or valves.
A. Wiring a LVCN700 series (95-250 VAC) to a Pump
(Automatic Fill or Empty) and (Independent High and Low)
Alarms
L
L
2
1
RELAY RELAY
RELAY
1
POWER
2
3
HOT
VAC
NEUTRAL
INPUT
RED
Green
(Solid ON or OFF) (Solid ON)
B. Power LED AMBER in RUN Mode: If while in the RUN mode,
the Power LED turns solid AMBER, this indicates that the switch has
power, but is not tracking the level and has entered into it’s FAIL-
SAFE mode. Coincidently, all Relay LEDs will be OFF, indicating
that the relays are in their de-energized safe-state. The switch will
remain in the FAIL-SAFE mode until such time that it re-acquires the
level and automatically returns to normal operation as programmed.
Check the following points in determining why the switch is not
tracking the level:
High Alarm
Motor Starter
(Pump)
L
L
2
1
RELAY RELAY RELAY POWER
1
2
3
VAC
Cal.
Run
Low Alarm
High
Low
NEUTRAL
VAC
Select
HOT
INPUT
L
L
2
1
B. Wiring a LVCN700-DC (12-28 VDC) to a Pump (Automatic
Fill or Empty) and (Independent High and Low) Alarms
RELAY RELAY
RELAY
1
POWER
2
3
HOT
VDC
NEUTRAL
RED
Amber
INPUT
(All OFF)
(Solid ON)
1. Observe and attempt to correlate an application
event such as foaming, substantial vapor and/or
turbulence that may reduce or eliminate the
acoustic signal strength. Read the Maximum
Applied Range (Step #4-E) and consider rein-
stalling the switch in a Stand-Pipe (Step #11-A-4)
to dampen turbulence and/or separate the point of
measurement from surface foam and/or vapor.
Application
High Alarm
Motor Starter
(Pump)
(+) (-)
RELAY RELAY RELAY POWER
1
2
3
VDC
Cal.
Run
Low Alarm
High
Low
Installation 2. Verify the switch is installed correctly per the
INSTALLATION section (Step #11) of this manu-
al. Initially focus on the fitting and/or obstructions
within the beam that may reduce or eliminate the
acoustic signal transmission-receipt. Consider
changing the fitting or relocating the switch to
another area of the tank.
NEUTRAL
VDC
INPUT
Select
HOT
C. Wiring a LVCN700 (95-250 VAC) to Pumps (Duplex or
Alternating) and Alarm (Out of Bounds, High or Low)
HOT
VAC
NEUTRAL
INPUT
3. Verify that the tank height is not greater than the
maximum range of the switch. If so, purchase and
install a switch with the appropriate range for your
tank height or level distance.
Alarm
C. Relay LED Changes State, But Relay Doesn’t Change:
Verify that the switch is wired correctly per the WIRING section
(Step #12) of this manual. If so, the Relays may have been damaged
due to a high inductive load or carbon build-up over time.
Motor Starter
(Pump 1)
L
L
2
1
RELAY RELAY RELAY POWER
1
2
3
VAC
Cal.
Run
Motor Starter
(Pump 2)
High
Low
NEUTRAL
VAC
INPUT
Select
HOT
Download from Www.Somanuals.com. All Manuals Search And Download.
OPERATION
Step Sixteen
Functional Chart for Relay On/Off Operations
Backup
Primary
Duplexing
Control
Operation
Stop
Energize
De-Energize
Relay 1
Relay 2
Energize
De-Energize
Backup
Primary
Stop
Alternating
Control
Operation
Energize
De-Energize
Relay 1
Relay 2
Energize
De-Energize
Start
Stop
Automatic
Empty
Operation
Energize
De-Energize
Relay X
Stop
Start
Automatic
Fill
Operation
Energize
De-Energize
Relay X
High
Low
Out of
Bounds
Operation
Energize
De-Energize
Relay X
Download from Www.Somanuals.com. All Manuals Search And Download.
|