Page 1
U/401,
Non-Contact Ultrasonic
Level/Distance Transmitters
@!j
lV402,
lV403,
ManualOperator’s
LV404
Page 2
The OMEGA Complete Measurement and
&
Control Handbooks
P
Temperature
v
Pressure, Strain
r/
Flow and Level
pH
and Conductivity
J
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for Your FREE Handbook Request Form Today:
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v
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w
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Systems
(203)
359-RUSH
Page 3
LA.-r”u.#,,
Servicing USA and
Canadazil
USA
One Omega Drive, Box 4047
Stamford, CT 06907-0047Lava1 (Quebec)
Telephone: (203) 359-1660
FAX: (203) 359-7700
Sales Service: I-800-826-6342
Customer Service: l-800-622-2378
Engineering Service: l-806-872-9436
TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA
OMEGA Toll Free
Canada
976
Bergar
Telephone: (514) 856-6928
FAX: (514) 856-6886
I-$00.TC-OMEGA ’”
/
1-800-622-BEST ’M
/
l-800.USA-WHEN ’”
/
5Al
H7L
Servicing Europe: United Kingdom Sales and Distribution Center
Swannington Road, Broughton Astley, Leicestershire
25
Telephone: 44 (1455) 285520FAX: 44 (1455) 283912
RETURN
Direct all Warranty
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN
(AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.
FOR
following information available BEFORE
contacting OMEGA:
1. P.O. number under which the product was
PURCHASED,
2. Model
warranty and
3. Repair
relative
d
II
.I.-.:.i:,,.‘.+
and repair requests/inquiries to the
YIyBBBrm
A is
o
RETURNS, please have the
awl serial number of the product under
in..tructions
to)
‘s
rd:
and/or specific problems 3. Repair instructions
the product.
[lolicy
is to make running changes, not model changes, whenever an improvement is possible.
our customers the latest in technology and engineering.
it
registered trademark of OMEGA ENGINEERING, INC.
t
1995 OMEGA ENGINEERING, INC. All rights reserved. This documentation may not be yrigt
pan, without prior written consent of OMEGA ENGINEERING, INC.
6TU,
England
LE9
REQUESTS
OMEGA ENGINEERING
FOR NON-WARRANTY REPAIRS OR
consult OMEGA for current repair/calibration charges.
Have the following information available BEFORE
contacting OMEGA:
1. P.O. number to cover the COST of the repair/
calibration,
2. Model and serial number of product, and
relative to the product.
lNQU[RlES
/
Customer Service Department.
IIN ORDER TO AVOID PROCESSING
and/or
::.:..i”:::
specific problems
~LIBRATION,
..s . . . . ., 8
copie$l.
form. iwl, reproduced, translated, or reduced to any electronic medium or machine-readable
:
1”
Page 4
TABLE OF CONTENTS
LV400
SERIES
SECTION
1
SECTION
1.1
1.2
1.3
SECTKIN
2.1
2.2
SECTION3OPERATION
3.1
3.2
3.3
3.4
3.5
SECTION 4 SPECIFICATIONS
INTRODUCTION
General
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Available Models
Unpacking
Installation and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..3
Power On
Protocol Commands
Setting Limits . . . . . . . . . . . . . . .
Temperature Compensation Mode
Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Description . . . . . . . . . . . . . . . . . . . . . . .
2 INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
.._.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.._
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.._...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..2
.. . . . . . . . .
.. . . . . . . . . .
. . . . . . . . . . . . . . .
. . . . . . . . . . .
PAGE
1
1
2
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
i
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
9
. . . . . . . . . .
.12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 5
SECTION 1 INTRODUCTION
1.1
GENERAL DESCRIPTION
LVLIO(I
OMEGA’S
Series non-contact ultrasonic distance
transmitter measures, displays and transmits the distance of
objects located in front of the sensor in the range from 0.5 to
30 feet, with an accuracy of up to 1%. It is suitable for
measuring liquid levels in tanks open to the air
PSIG), certain solid levels (consult Flow department for
details), as well as other eneral distance measurements. All
display with 0.1 inch resolution.
units feature a 4-digit
ib
L
Versions are available with one or two alarm relays, analog
4-20
K-232
wa computer communications, and a remote transducer
wrt up to 40 feet of cable.
*‘c
LV400
Setting the limits of the
alarms and analog output can
be performed manually by presenting targets at the desired
setpoints, or by entering the exact distance value (in inches)
by computer
communrcation. Alarm setpoints equal the
analog output span. Temperature compensation for
variations in air temperature is done automatically by
placing a reference target at an exact distance away from
the sensor.
1.2 FEATURES
??
Manual or Computer Programmable
??
Relay Output, Analog Outputs
??
Serial ASCII, 9600 Baud Communications
1
or mA, O-3, or O-IO VDC outputs,
(0
internal
K-422
two-
Page 6
??
4-Digit LED Display
??
Optional Remote Sensor
AVA,lLABLE
1.3
LV401
LL’402
LV403
LV404
Add suffix
Add suffix
“-RS”
MODELS
Unit with high relay ONLY
Unit with high relay and 4-20
mA output
Unit with high relay and O-3 VDC output
Unit with high relay and O-IO VDC output
“-RS232”
“-R”
for additional low relay output. Add suffix
“-RS422”
or
to reverse action of analog output
for communication option.
(increasin
with decreasing distance from the sensor face).
“-RT(*)”
for remote sensor, replacing asterisk with cable
length in feet up to 40.
To display height, reverse the distance display with option
“-ZO”.
For extended range measurement, displays in feet
60-ft.,
(0.1) up to
add suffix
“-ER”.
SECTION 2 INSTALLATION
2.1
UNPACKING
Remove the packing list and verify that all equipment has
been received. If there are any questions about the
shipment, please call OMEGA Customer Service Department
at l-800-622-2378 or (203) 359-1660.
A8d
output
suffix
2
Page 7
Upon receipt of the shipment, inspect the container and
equipment for any signs of damage. Take particular note of
any evidence of rough handling in transit. Immediately
report any damage to the shipping agent.
NOTE
The carrier will not honor any claims unless all
shipping material is saved for their examination.
After examining and removing contents, save
packing material and carton in the event
reshipment is
2.2
INSTALLATION AND WIRING
necessan/.
Mount the instrument as is appropriate for your application.
Refer to Fiaure 2-l. The transmitter ’s 12 dearee beamwidth
should
be”aimed
as squarely as possible
target. The transducer of the
LV400
must NOT be mounted
it
where it will be exposed to vapors which will attack the
nylon, Kapton, or stainless steel construction of the
transducer. Materials which attack the transducer include,
but are not limited to, alkyd solvents (such as found in some
printing inks) which attack Kapton and acids, such as HCL,
which attack the stainless steel. In addition, the transducer
must NOT be exposed to condensing vapors, such as those
found above a tank of heated liquid (including water).
Connect the 12 VDC power source using
(-).
red
(+)
and black
Be sure the polarity
the labeled leads:
is not reversed or
‘damage to the instrument may result.
the intended
3
Page 8
L-1
Q
1-
Figure
LOW
2.700---
2-1.
Mounting Dimensions
a
HIGH
4
Page 9
For relay, analog output. RS-232 and RS-422 interface
connections using the standard 12-conductor cable, refer to
Table
2-1,
For connections using a
WIRING CONNECTIONS,
ib12VDC
‘IDC
GND
RLYNO
RLYNC
RLYCOM
AN+
*AN-
TX/RX-
A:XfRX+
C:OM
TX+
TX-
15-conductor
TABLE2-1
Red
BLACK
BROWN
GREEN
WHITE
ORANGE
BLUE
PINK
GRAY
TAN
PURPLE
YELLOW
5
cable, refer to Table 2-2.
12-CONDUCTOR
DC POWER IN
DC RETURN
N.O. RELAY
N.C. RELAY
COMMON RELAY
ANALOG OUT
ANALOG RETURN
RS232XMITlRS422
RS232
RECVIRS422
RS232 COMMON
XMIT+
RS422
XMIT-
RS422
CABLE
(mA/VDC)
RECV-
RECV+
Page 10
WIRING CONNECTIONS. 15-CONDUCTOR CABLE
TABLE 2-2
+12lrDC
DC GND
RLYNO
RLYNC
RLYCOM
AN+
AN-
TX/RX-
RX/RX+
#l
#I
#1
RED
BLACK
BROWN
GREEN
WHITE
ORANGE
BLUE
WHITE/BLACK
GRAY
COM WHITE/RED
TX+
TX-
RLY NO
RLYNC
#2
#2
RLYCOM
“DC(;ND’
recommended in order to power the unit and to power the
PURPLE
YELLOW
WHITE/BROWN
WHITE/YELLOW
#2
WHITE/ORANGE
LN-”
are internally
comn
DC POWER IN
DC RETURN
N.O. RELAY
N.C. RELAY
COMMON RELAY
ANALOG OUT
ANALOG RETURN
RS232XMlTlRS422
RS232
RS232 COMMON
RS422
RS422
N .O. RELAY
N.C. RELAY
COMMON RELAY
2
I
separate power supplies a
;
thus,
6
#I
#I
(mAIVDC)
RECVlRS422
XMIT+
XMIT-
#2
#2
analog.
#I
RECV-
RECV+
#2
Page 11
NOTES:
Page 12
SECTI ’DN
3.1
3
OPERATION
IPOWER
The
ON
LV400 Series begins operating and makin g
Imeasurements as soon as power is applied. This is indicated
ton
the numeric display which reads in inches. Echo loss or
imeasurements
are indicated by four dashes
3.2
PROTOCOL COMMANDS
LV400
Series commands are ASCII characters:
that are out of range (greater than 60 feet)
(----) in the display.
“L” “L123.4” sets the LOW limit to 123.4 inches.
“R” “R234.5” sets the HIGH limit to 234.5 inches.
“E” Enables
“D” Disables
LV400
Series control of the relay.
LV400 Series control of the relay.
“0” Opens relay if control has been disabled.
“C” Closes relay if control has been disabled.
“S”
LV400
transmits status.
(Example: Terminal sends “S”, LV400 returns 123.4, 234.5,
EN, CL:LOW limit set at
123.4”, HIGH limit set at
relay control enabled, relay closed.)
“U” Command returns the raw count. It must be multiplied
in the receiving computer by the scale factor
to convert to inches.
8
234.5”,
.00732421875
Page 13
,SElTING
3.3
Measurement limits which control the condition of the relav
can be set both manually or by computer commands (for
units with serial
range, the relay is actuated; otherwise the relay remains in
its normal condition.
‘The limits can be displa
‘either the “HIGH” or “L
measurement display will be suspended for a few seconds
while the limit is displayed.
Manual limit setting is performed by placing a target at the
‘desired
(LOW or HIGH) until the display reads the desired setting.
‘The limits can be changed as often as necessary but not
‘greater than 10,000 times. Limit setting via the serial port is
accomplished using the protocol commands.
.Analog
maximum at or above the “HIGH” limit. They are set to
minimum at or below the “LOW” limit and are scaled as 256
.steps
‘The standard 4-20
‘voltage.
3.4
TEMPERATURE COMPENSATION MODE
‘The
(calibration mode (“CAL” Mode) which can be evoked
manually. This mode is selected by depressing both limit
LIMITS
interface4s).
setpoint
signals represent the measurements and are set to
within the HI/LO range.
LV400
and pressing and holding the limit switch
mA current sink requires an external
Series incorporates a high accuracy
If a taraet is found inside this
ed
by momentarily depressing
W”
lrmit switches. The current
8
9
self-
Page 14
switches at the same time. The display will indicate “CAL”
and toggle between “ON” and “OFF” until the switches are
released. The last condition displayed before the switches
are released will be selected.
3.5
GAIN ADJUSTMENT
LV400
The
alpplications,
order for the remote transducer
l’ength
with commercially available RG62 coax cable, but this will
require gain adjustment as shown below. In addition, when
measuring irregular shaped solids or where dust is present,
gain adjustment may also be required.
1.
2.
3.
4.
5.
6.
has been factory-tuned for general purpose level
and for the cable length
of the remote transducer can be altered in the field
Remove power from the instrument.
Remove the front cover of the
4 captive screws.
If you have the remote transducer
transducer
this adjustment on a bench, set the transducer up so that
it is firmly held and is armed at a target nominally
20’ away. Neither the transducer nor the target should
be free to move. Or you may perform this adjustment in
the actual application.
Set up an oscilloscope such that it is triggered from pin
5 of the 40 controller chip.
Monitor pin 7 of the
Apply power to the
&
cable to the
TL852
LV400
LV400.
on the oscilloscope.
and adjust the scope unit the
10
ecified
s
)
option. The cable
P
(-R
LV400
by lossening the
(-RT),
If you are performing
at the time of
connect the
Page 15
target echo is displayed and prominent (adjust gain for
.5v
p-p max. echo).
Locate the variable transformer TX1 found next to the
‘7.
small white potentiometer in the lower left corner of the
rear PCB.
13. Adjust the transformer tuning slug by turning it
clockwise or counterclockwise until the echo amplitude
is at a maximum. Clockwise is increasing
g.
Replace the front cover and test.
‘IO. Repeat if required.
THIS ADJUSTMENT SHOULD BE MADE BY QUALIFIED
PERSONNEL ONLY AS DAMAGE MAY OCCUR IF THE
INSTRUMENT IS HANDLED IMPROPERLY THEREBY
\/OIDING
THE WARRANTY.
When using the Temperature Compensation Mode, a wire
l/8
tar
et of nominally
a
inc
es from the face of the
At room temperature
a measurement display of 6.4” can be use
inch diameter must be located 6.22
LV400
Series transducer.
(68”F),
prior to
selectin
the CAL Mode
8 to indicate the
proper reference point, Once the reference target is in place,
the CAL Mode can be selected. Under these conditions,
+_l%
measurement accuracies of better than
11
can be obtained.
Page 16
SECTION 4
SPECIFICATIONS
RESOLUTION:
TEMPERATURE EFFECT:
UPDATE BATE:
RANlGE:
WEIGHT:
DIMENSIONS:
ELECTRONICS CABLE:
.007”
for analog, RS-232 and RS-422
output, 0.1” display The analog
output
IS
divided into 256 increments
between the HI/LO limits. The best
possible resolution of the analog
the resolution could
output is
.007”;
be much lower, depending upon the
span of the HI/LO limits.
1% shift in accuracy for every 18°F
away from 68°F air temperature
when not using the Auto Temp.
Compensation
I2
degrees; target should occupy one
square
ft/lOft of distance for optimal
performance. Consult Flow Dept. for
collimator for small targets at large
distance.
13 measurements per second
.5
to 30 feet
11 oz.
1.77” x 3.50” x 4.70”
;?‘slength,
12 conductor, stripped
12
Page 17
ELECTRICAL:
PROTOCOL:
RELAY:
ANALOG OUTPUT:
POWER:
OPERATING TEMPERATURE:
STORAGE TEMP.:
RELATIVE HUMIDITY:
SENSCHI
CDNSTRUCTK)N:
RS-422 or RS-232, 9600 baud, 8 bit
data, no parity, 1 stop bit
All communications are initiated by
the host computer or terminal.
Commands are sent to an d
interpreted by the
data is returned.
.25
0-BVDC,
steps within setpoints. 4-20
requires external 5-50 VDC power
supply. Max. loop resistance =
(supply voltage -5) x 53. 1000 ohms
for 24 VDC supply. Standard output
increases with increasing distance
from sensor face.
7.5 to 12 VDC
accepts 12 VDC only)
-20°F to 160°F for sensor;
158°F for electronics
-40°F to 250°F for sensor an d
electronics
5% to 95% for non-condensing
24K gold on Kapton film diaphragm, nylon
housing with stainless steel grille
LV400
@ 120 VAC resistive, SPDT
amp
O-10 VDC, or 4-20
@
500
13
Series and
mA, 256
mA
(LV404
mA
32”f to
Page 18
NOTES:
Page 19
WARRANTY
OMEGA warrants
satisfactor,
adds an
ailditional
warranty to cover handling and shipping
receive maximum coverage on each product. If the unit should malfunction, it must be
returned to the factory for evaluation. OMEGA ’s Customer Service Department will issue
an
Authorized
examination by OMEGA, if the unit is found to be defective it will be repaired or replaced
at no charge. However, this WARRANTY is VOID if the unit shows evidence of having
been tampered with or shows evidence of being damaged as a result of excessive
corrosion; or current, heat, moisture or vibration; improper specification; misapplication;
misuse or
wear or which are damaged by misuse are not warranted. These include contact points,
fuses, and
iS
VMEQA
theless,
this
service for a period of
Xher
triacs.
glad
OMEGA
unit to be free of defects in materials and workmanship and to give
(1)
one
(AR)
Return
operating conditions outside of OMEGA ’s control. Components which
t0
Offer
only
warrants that the parts manufactured by it will be as
13
month grace period to the normal
months
number immediately upon phone or written request. Upon
suggestions on
from date of purchase. OMEGA Warranty
time. This ensures that OMEGA ’s customers
the use
of its
(1)
year
one
various products. Never-
product
specified and free of defects.
OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND
WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE AND ALL
IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.
LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are
exclusive
based on contract, warranty,
otherwise, shall not exceed the purchase price of the component upon which
liability
incidental
Every precaution for accuracy has been taken in the preparation of this manual; however,
OMEGA ENGINEERING, INC. neither assumes responsibility for any omissions or errors
that may appear nor assumes liability for any damages that result from the use of the
products in
SPECIAL CONDITION: Should this equipment be used in or with any nuclear installation or
activity,
damage wh
and
the total liability of OMEGA with respect to this order. whether
i!;
based. In no event shall OMEGA be liable for consequential,
or
special damages.
,accordance with the information contained in the manual.
pur,:haser will indemnify OMEGA and hold OMEGA harmless from any liability of
jtsoever
arising out of the use of the equipment in such a manner.
negligence, indemnification, strict liability or
Page 20
I
M/here
Do
Find Everything I Need for
Process Measurement and Control?
OMEGA ...Of Course!
TEMPERATURE
&
Ice Point References&f Calibrators
Thermistor
&
Assemblies
&
Thermistor
&
Process Monitors
k?
Thermocouple, RTD
Probe ‘., Connectors, Panels
k?
Wire: Thermocouple, RTD
D
Recorders, Controllers
k+
Infrared Pyrometers
&
PRESS ’URE/STRAIN FORCE
&
m
Transducers
i??
Load Cells
m
Displacement Transducers
Inshunentation
B
Strain Gages
&
Pressure Gauges
&
Accessories
FLOW,/ LEVEL
k?
Rotameters, Gas Mass Flowmeters
Flow
Computers
V~~locity
B
Air
B
Turbine/Paddlewheel Systems
Totali~:ers
B
Indicators
&
Batch Controllers
&
H/CONDUCTIVITY
&
pH
Electrodes, Testers
&
Benchi:op/Laboratory
B
D
Controllers, Calibrators, Simulators
Pumps
B
Industrial
M0992/(1495
&
Accessories
Meters
&
Conductivity EquipmentpH
DATA ACQUISITION
@’
Data Acquisition and Engineering
Software
I??
Communications-Based Acquisition
Systems
R
Plug-in Cards for Apple,
Compatibles
Datalogging
i%+
0
Recorders,
HEATERS
B
Heating Cable
@’
Cartridge &Strip Heaters
D
Immersion
@’
Flexible Heaters
m
Laboratory Heaters
ENVIRONMENTAL
MONITORING AND CONTROL
kf
Metering
B
Refractometers
B
Pumps
B
Air, Soil
m
Industrial Water
Treatment
pH, Conductivity
m
Instruments
&
IBM
Systems
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Hotter5
Printers
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&
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&
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