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USR03
Installation Manual
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Omega Engineering USR03, UMR14, ULR30, UXLR50 Installation Manual

U-Series Ultrasonic Sensors
Ultrasonic Distance Sensors
omega.com info@omega.com
Servicing North America:
Omega Engineering, Inc.
Tel: (203) 359-1660
Fax: (203) 359-7700
For Other Locations Visit omega.com/worldwide
U.S.A.
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and
Headquarters:
800 Connecticut Ave, Suite 5N01, Norwalk, CT 06854 Toll-Free: 1-800-826-6342 (USA & Canada only) Customer Service: 1-800-622-2378 (USA & Canada only) Engineering Service: 1-800-872-9436 (USA & Canada only)
e-mail: info@omega.com
reserves the right to alter specifications without notice.
2

Product Declarations

Related Products

OmegaVIEW for Windows

A setup tool for U-Series ultrasonic sensors series sensors, this software installs on a PC and is used to configure sensor options, select and calibrate outputs, view and analyze measurements, and save the result to a PC hard drive. Recalled configurations can restore or duplicate an application without recalibration. View, chart, log, and analyze sensor operation. Sensor firmware upgrades can be done easily through OmegaVIEW too. Download OmegaVIEW at no charge from: omega.com/en-us/ftp

Setup Kits

Used for bench viewing or configuring sensors, kits include power supply, terminal board, and cables to interconnect with your PC.

CE Compliance

U-Series ultrasonic sensors family of ultrasonic sensors are compliant with the CE Electromagnetic Compatibility Directives and Standards listed below:
Directives: Electromagnetic Compatibility (2004/108/EC) Low-Voltage (2006/95/EC) Standards: EMC: EN 61326-1:2006 Industrial Safety: EN 61010-1:2001
and search by model.
3

Table of Contents

PRODUCT DECLARATIONS ........................ 2
Document RevisionsError! Bookmark not defined. Related Products _________________________ 3
CE Compliance __________________________ 3
Table of Contents _________________________ 4
Terminology _____________________________ 5
ULTRASONICS OVERVIEW ........................................ 6
Introduction ______________________________ 6
Advantages _____________________________ 6
Typical Applications _______________________ 6
SENSOR OVERVIEW ................................................... 7
U-Series Ultrasonic sensor Product Features ___ 7
Startup Tips _____________________________ 8
Specifications ____________________________ 9
Mechanical Details _______________________ 13
Mounting and Installation __________________ 13
Rear Features __________________________ 14
Target Indicator _________________________ 15
Output Status Indicators ___________________ 16
INTERFACES ............................................................. 18
Wires Identification _______________________ 18
U-Series 3 &14 Output Selection ____________ 19
Analog Outputs __________________________ 20
Serial Data Interface ______________________ 26
Serial Parameters ________________________ 27
Serial Data Protocols _____________________ 29
OPERATION ............................................................... 31
Power Up ______________________________ 31
Measurement Activation ___________________ 31
Synchronization _________________________ 33
Operating Range ________________________ 34
Measurement Process ____________________ 34
Sensor Viewing _________________________ 35
Measurement Rate _______________________
Output Response Time ___________________ 37
Filters _________________________________ 38
Time Delays ____________________________ 41
Temperature Compensation ________________ 41
OMEGAVIEW SOFTWARE ........................................ 44
Install OmegaVIEW ______________________ 44
Application Setups _______________________ 44
Connect a Sensor ________________________ 45
Outputs & Indicators ______________________ 46
Sensor Adjustment _______________________ 49
37
TEACH ADJUST ......................................................... 50
APPENDIX A – LIST OF ADJUSTABLE FEATURES 53
Warranty ………………………………………………….57
LIST OF FIGURES
Figure 1 - Part Number Structure .................................. 7
Figure 2 - Mechanical Drawing, U-Series ultrasonic
sensors 3, 14 metric thread ......................................... 13
Figure 3 - Mechanical Drawing, U-Series ultrasonic
sensors 30, 50, and 50P ............................................... 13
Figure 4 - Sensor Orientation ...................................... 13
Figure 5 - Mounting ..................................................... 14
Figure 6 - Sensor Rear Features ................................... 14
Figure 7 - Target Indicator Functions .......................... 15
Figure 8 - Output Status Indicator Operations ............ 17
Figure 9 - RS-232 PC COM Port Connections ............... 19
Figure 10 - Voltage Output Wiring .............................. 20
Figure 11 - Sourcing Current Loop Wiring ................... 20
Figure 12 - Sinking Current Loop Wiring ...................... 21
Figure 13 - OmegaVIEW Analog Adjustments ............. 23
Figure 14 - Sinking Switch Output Wiring .................... 23
Figure 15 - Sourcing Switch Output Wiring ................. 24
Figure 16 - Switch Hysteresis & Window Modes ......... 25
Figure 17 - OmegaVIEW Switch Adjustment ............... 25
Figure 18 - RS-232 PC COM Port Connections ............. 26
Figure 19 - RS-232 Connections ................................... 27
Figure 20 - Serial-485 Connections .............................. 27
Figure 21 - RS-485 Network Wiring ............................. 27
Figure 22 - Measurement Activation Selections .......... 32
Figure 23 - OmegaVIEW Polling Controls .................... 32
Figure 24 - SYNC Wiring .............................................. 33
Figure 25 - SYNC Phases and Timing ........................... 33
Figure 26 - Measurement Process Diagram ................ 34
Figure 27 - OmegaVIEW Distance Displays ................. 35
Figure 28 - Filters Block Diagram ................................ 38
LIST OF TABLES
Table 1 - Wire Assignments ____________________ 18 Table 2 - Measurement Activation Summary ______ 31 Table 3 - Maximum Range vs. Measure Rate ______ 37 Table 4 - Filter Response Time __________________ 40 Table 5 - Pushbutton TEACH Features List _________ 52
4

Terminology

Terms listed here are shown in italics throughout this document. An asterisk (*) indicates a OmegaVIEW configurable parameter.
Analog An electrical output type that varies in proportion to
measured distance. Analog output types can be either current loop or voltage.
Analog High Value* The maximum (highest) value of an analog
output. For example, the Analog High Value for a 4-20 mA current loop analog output is 20 mA. Computer configurable models allow this value to be user-entered.
Analog Low Value* The minimum (lowest) value of an analog
output. For example, the Analog Low Limit value for a 0-10 VDC voltage output is 0 volts. Computer configurable models allow this value to be user-entered.
Analog Window* A range of distances between two endpoints,
within which the analog output will vary between the analog low value and analog high value proportional to measured distance.
Current Loop Output* An analog output type that drives an
electrical current proportional to measured distance. U­Series ultrasonic sensors provide 4-20 mA or OmegaVIEW customized output ranges in sourcing or sinking current.
Dead band The small distance near the sensor face within
which distance cannot be measured. See also Range MIN.
Endpoint* One of two end distances representing the outer
limits of the analog window.
Hysteresis* The distance between a switch’s Setpoint and OFF
Distance. It reverses direction about the Setpoint if the Polarity is reversed.
Ingress Rating An enclosure rating that identifies how
susceptible a product is to the entry (ingress) of external objects or liquids.
Measurement Rate* The repetitive rate that the sensor
measures distance (see response time).
Measurement Interval* The time between measurements [1 /
Measurement Rate].
Measurement Process* The measurement, filtering and time
delays that affect sensor outputs (p 34).
Maximum Range The maximum target detection distance of a
sensor model; may be overridden by Range MAX (p 34).
Near MIN A distance extending 0.25 in. farther than Range MIN
within which the Target Indicator will flash as a warning.
Operating Range* The range of distances between the range
MIN and range MAX values (p 34).
Optimum Range The range of target distances recommended
for optimum performance in varying environmental conditions.
Output Status Indicator An indicator at the rear of U-Series
ultrasonic sensors 3,, and 14 that shows the status of an analog, switch or serial data output. There is a separate output status indicator for output #1 (black wire) and output #2 (white wire).
Polarity* The behavior of a switch output at its setpoint, defined
as “on-closer” or “on farther”. A switch turns OFF in the reverse direction after the Hysteresis distance.
Range MAX* The farthest distance of the Operating Range;
user adjustable in OmegaVIEW.
Range MIN* The nearest distance of the Operating Range; a
target is not detected closer than the greater of Range MIN or the Dead band.
RS-232* An electrical interface standard used to transfer
information using serial data communications. This is a single ended interface with a specified maximum range of 50 feet (15 meters) that typically supports one device.
RS-485* An electrical interface standard used to transfer
information using serial data communications. This is a long-distance differential interface capable of supporting multiple addressable devices.
Response Time* The time required for sensor outputs to
respond to measurements; affected by measurement rate and filter selections.
Serial Data Distance data output over the serial interface as
opposed to the analog or switch lines
Setpoint* The distance a switch output turns ON. (see also OFF
distance, polarity and Hysteresis)
Sinking Switch* A switch where current flows into the sensor to
ground from an externally sourced load when turned ON (output voltage low when ON).
OmegaVIEW Omega PC–based software used to configure and
install U-Series ultrasonic sensors.
Sourcing Switch* A switch where current flows from the sensor
(sensor power input is the source) to the load when turned ON (output voltage high when ON).
Switch* An electrical output type that is either ON or OFF. U-
Series ultrasonic sensors® switches are solid state and can be either sinking or sourcing type.
SYNC* A wired configuration that synchronizes the timing of
two or more sensors to prevent crosstalk or ensure simultaneous measurements.
SYNC Interval The time interval of measurement of all SYNC
sensors. It equals the number of SYNC phases x
measurement interval.
Target Any object or material that reflects ultrasonic energy
back to the sensor thus allowing the sensor to measure its distance.
Target Indicator A rear indicator that shows the status of a
detected target and more.
Teach* A Omega product feature that uses a pushbutton to
to store a current target distance measurement into memory and automatically calibrate the output(s).
Time Delay* A time period triggered by a set of conditions and,
after those conditions persist for the entire period, cause a secondary event to occur. There are several user-selected time delay features available.
Ultrasonic A sound wave of a frequency greater than 20,000
Hz, typically above the range of human hearing.
Voltage Output* An analog output type that drives an
electrical voltage proportional to measured distance. U­Series ultrasonic sensors provide industry standard or OmegaVIEW customized output ranges.
5
( 2 ) U l t r
a
s o n i c e c h
o
r e t u r n s f r o m t a r g e t
( 1 ) U l t r a s o n i c p u l s e t r a n s m i t t e d f r o m s e n s o r

Ultrasonics Overview

Introduction

Omega sensors measure the distance or presence of a target object by sending a sound wave, above the range of hearing, at the object and then measuring the time for the sound echo to return. Knowing the speed of sound, the sensor can determine the distance of the object from the transducer element.

Advantages

• Non-contact
Measures through the air without touching the target object, at relatively large distances.
• Object Ranging
Object distance is measured rather than just the presence or proximity.
• Distance Proportional Output
The sensor’s outputs are proportional or affected by the measured target distance.

Typical Applications

Roll Diameter
Measure the size of a roll to control tension or speed or determine when full or empty.
Loop Control
Precisely control the position of material loops, including wires, tubes and webs.
Web Break
Rapidly detect a broken web in a printing press or paper machine.
Dimensioning
Determine the size of an object for information or to determine its volume or width.
• High Resolution
Precise discrimination of target position.
• Unaffected by Target’s Optical Characteristics
The sensor’s operation is not sensitive to ambient light levels, the color of the target, or target is optically transparency/reflectivity.
• Sensitive
Detects large and small objects (smaller objects must be closer)
6
Proximity
Determine the presence of objects to count or control their movement.
Sort/Select
Sort or select objects based on differences in their physical dimensions.
Level Measurement
Measure or control the level of liquid or solid materials in tanks or bins for inventory or batching….
and many more...

Sensor Overview

U-Series Ultrasonic sensor Product Features

U-Series ultrasonic sensors measure distance without contact and are designed for tough industrial environments.

Rapid PC Setup & Control

PC setup gives you control over all sensor outputs and features. View, analyze and save sensor setups for rapid implementation or cloning.

Pushbutton “Teachable”

Some models utilize a rear TEACH button to make many common adjustments. See the Teach Adjust section. Rear indicators provide target and output status. The TEACH
button can be disabled for security using OmegaVIEW. The TEACH button is unavailable on the U-Series UXLR 50 models and serial-only models.

Industry Standard Interfaces

Multiple simultaneous outputs, each with many OmegaVIEW adjustable features.

Part Numbers

Packaging

U-Series ultrasonic sensors models are housed in rugged 316 stainless steel or durable PVC, with permanently attached interface cables. Sensors are potted and sealed to operate in wide humidity and temperature ranges.
Figure 1 - Part Number Structure

Identification

The U-Series ultrasonic model number and serial number are printed on the label on the side of the housing.
7

Startup Tips

New or first-time users can use this condensed guide for assembly, connection to a PC, and basic sensor changes from default values before installation The sensor communicates with a Windows PC through the serial port or USB port. A UAN-Kit from Omega is recommended for connecting to your PC. It includes a termination board, power supply and cables.
Install the Software
Download OmegaVIEW and install to your PC. Open OmegaVIEW Version 3.6.xxx Setup.exe to install. Start OmegaVIEW.
.
>User Preferences…> Connection/ Starting COM port: and enter new start number. Return to
Connect Sensor
and repeat connection with any available green ports. For more detail, see “
OmegaVIEW Quick Tour
Connect a Sensor”, page 45.
Once a sensor is connected, it can be viewed in the SENSOR view. Any changes are done in the WORKSPACE view and transferred to the sensor. Basic layout of the main screen:
a. Range and basic setup values, all editable. b. Workspace and Sensor views c. File saving and retrieval button d. Dialog screens for additional setup e. Analysis tools f. Output setup and simulated meters (editable)
Connect the Components
The sensor uses colored wires for power, communication, and outputs. For a basic terminal board connection, we’ll use 4 of the sensor’s wires:
a. Brown for DC power (DC+) b. Blue for ground (GND and digital reference)
c. Gray and Yellow for digital communication. Connect them to the labeled Omega terminal board. Protect all bare wires from contacting one another whether connected or not. Ensure the terminal grips the stripped wire, not its colored jacket. Plug the data communication cable into the terminal board RJ jack and your serial port (-232 models), or into the USB adapter (optional for -232 and required for -485 models). (For USB adapters see page 14) Put the DC power supply cable into the jack on the terminal board, and the supply into an AC source. All sensors will faintly tick when powered.
Connect to Your Sensor (using serial port)
Start OmegaVIEW. Menu bar: Sensor >Connect for a dialog box. All new sensors have network address 1. Use Baud rate 9600. The serial port is generally identified COM 1. Click Connect.
OR Connect to Your Sensor (using a USB port)
Start OmegaVIEW. Menu bar: Sensor >Connect for a dialog box. All new sensors have network address 1. Use Baud rate 9600. Select the COM port from the choices or run Com Port Survey. If COM port is higher than the 12 shown. Edit
Setup Basics (advanced description starts page 21)
When sensor is found, answer YES to copy sensor setup to the Workspace. You are left in Sensor View showing the sensor reading and its current setup. To make changes, click the WORKSPACE button.
-To change a Range, Endpoint, or output value, just click on the value and enter a new one.
-To reverse the analog slope, right-click the High- or Low-value endpoint.
-To assign outputs, click WIRING and assign black and white wires as needed. Any changes in Workspace make it different than the Sensor, shown by the unequal symbol. Transfer WORKSPACE to SENSOR.
Save the Setup to the Sensor
To move changes to sensor, right click and drag
WORKSPACE to SENSOR. Any changes not sent to the sensor will be lost when closing OmegaVIEW
Save the Setup to the PC.
.
Right click WORKSPACE and drag it to FILE.
Mounting Tips
Sensor must be mounted perpendicular to the object to be measured for sound echoes to return. The sensor cannot sense in a space less than the default Minimum Range value. The sensor will ignore targets or surfaces beyond the Max Range value. Avoid echoes from pipe fittings, welds, and fixed objects with careful placement. The sensor will return a distance value from the first surface found within range. Contact Omega technical support for setup assistance.
8
Model Name
USR03
xxx
UMR14
Maximum Range
3 ft (91cm)
14 ft. (4.3 m)
Optimum Range (small Two outputs: OmegaVIEW selectable as 0-10 VDC (or custom), 4-20 mA (or custom)
Switches: 150 mA, OmegaVIEW configured as PNP (@ input voltage) or NPN
Voltage: 0-10 or OmegaVIEW configured, 10 mA max (min 15 VDC input for full 10
Current Loop: 4-20 mA or OmegaVIEW configured, 450Ω max @ >15VDC, 250Ω
Round LED: Power/Target. Square & Rectangular LEDs: Data, switch or analog Serial-only models: Round LED Power/Target
Serial interface,
Modbus slave, ASCII, or SYNCH. RS-232 or RS-485 interface, depends on model. RS-
Power Input
10-30 VDC @ 55 mA max
DC Current @ typical 24VDC input DC Current, Serial-only
Typical 30 mA @ 24VDC
Typical 35 mA @ 24VDC
Ingress: IP-68, NEMA-4X Humidity: 0-100% (avoid heavy condensation) Temp: -40 to
Transducer frequency
240 kHz
120 kHz

Specifications

A summary of sensor specifications and features is shown in the following table.
Part number, Metric
Part number, NPT
Photo
Deadband (minimum)
targets, dry materials, hot)
Outputs, full-featured models:
Outputs, Serial-only: NONE
USR03-30MM-
USR03-1NPT-xxx
UMR14-30MM-xxx
UMR14-1NPT-xxx
1.75 in (4.4 cm)
1.75 in (4.4 cm) to 24 in (61cm)
sourcing, PNP or NPN switches
(external 40 VDC max.), setpoint mode or window mode
VDC output)
max @ 10 VDC
4 in. (10.2 cm) to 10 ft (3m)
4 in. (10.2 cm)
Indicators
Interface protocol
+I/O
Environmental
status (configurable)
485 models are 2-wire multi-drop addressable (addresses 1-247). Baud rates 9600 ­115200, none or even parity, 8 bits, one stop bit. OmegaVIEW configured.
Typical 45 mA @ 24VDC input +I/O
+158 F (-40 to +70 C)
9
Model Name
Part number, Metric
USR03
xxx
UMR14
xxx
Rugged piezoelectric, Rugged piezoelectric, nominal beam width ~12
Default: 50 msec (20 Hz)
Adjustable from 5 msec to 2.8 hours; faster rates limit max target distance
Repeatability: Greater of +/-0.03 in. (0.76 mm) or 0.25% of target distance in stable
4100 steps over 0-10 VDC and 3279 steps over 0-20 mA (scaled between user-set Resolution (serial data)
0.0034 in. (0.086 mm)
-40 to +158F (-40 to +70C) Temperature Compensated by internal sensor or external Adjustments
Pushbutton Teach (except in serial-only version) or OmegaVIEW software (included)
Cable, full outputs
6.5-ft (2m) 6-wire with shield, tinned ends, PUR. Longer cables available. M12
6.5-ft (2m) 4-wire with shield, tinned ends, PUR. Longer cables available. M12 Max serial cable length
RS-232: 50ft (15 m), RS-485: 3937ft (1200m).
Weight
10.3 oz. (0.29 kg)
Housing material,
Dimensions
Default: RangeMIN
1.75 in. (4.4 cm)
4 in. (10.2 cm)
Options Interface:
RS-232 or RS-485
m30x1.5 or 1-in NPT thread
Two outputs
Part number, NPT
Transducer, Beamwidth
Measurement rate
Performance
Resolution (analog)
Temperature
USR03-30MM-
USR03-1NPT-xxx
nominal beam width ~12 degrees @ -3 dB, approx.
conical shaped pattern
environment Accuracy: Better than 0.5% of target distance in stable, homogeneous air environment; affected by temperature gradients, target echo strength, speed of sound in air or vapors.
distance endpoints)
Reference Target
degrees @ -3 dB, approx. conical shaped pattern
UMR14-30MM-
UMR14-1NPT-xxx
(embedded)
Cable, serial-only
Mount
(Dia x Length)
RangeMAX Switch #1 Setpoint Switch #2 Setpoint Analog Low Endpoint Analog High Endpoint
Mount method:
connector on 18” cable available with extension cables available
connector on 18” cable available with extension cables available
316 Stainless, M30x1.5 mm thread OR 316 Stainless, 1-in NPT thread
1.2 in. (30.4mm) x 4.064 in. (103mm)
36 in. (91 cm)
12 in. (30.5 cm)
18 in. (46 cm)
1.75 in. (4.4 cm) 24 in. (61 cm)
168 in. (427 cm)
12 in. (30.5 cm)
24 in. (61 cm)
4 in. (10.2 cm)
120 in. (305 cm)
Outputs:
10
&
UXLR50-15NPT-RM-xxx
Maximum Range / Dead
30 ft. (9.1m) /
Optimum Range (small
only:
Five Outputs: 0-10 VDC, 4-20 mA sourcing, 4-20 mA sinking, two switches
Switches: 150 mA, OmegaVIEW configured as PNP (@ input voltage) or NPN
Voltage: 0-10 or OmegaVIEW configured, 10 mA max (min 15 VDC input for full 10
Current Loop: 4-20 mA or OmegaVIEW configured, 450Ω max @ >15VDC, 250Ω
Round LED: Power/Target. Square & Rectangular LEDs: Data, switch or analog Serial-only models: Round LED Power/Target (except UXLR50RM)
Serial interface,
Modbus slave, ASCII, or SYNCH. RS-232 or RS-485 interface, depends on model.
Power Input
10-30 VDC @ 70 mA max
DC Current @ DC Current, Serial-only
55 mA max, Typical 35 mA @ 24VDC
Ingress: IP-68, NEMA-4X Humidity: 0-100% (avoid heavy condensation)
Transducer,
Rugged piezoelectric, nominal beam width ~12 degrees @ -3 dB, approx. conical Transducer frequency
75 kHz
50 kHz
50 kHz
Default: 100 msec Adjustable from 5 msec to 2.8 hours; affected by filter selections
Photo
Model Name
Part Number
ULR30
ULR30-15NPT-xxx
UXLR50 (clamped)
UXLR50-CM-xxxx
(Rear mounted)
UXLR50 (PVC)
UXLR50-25NPT-FR-xxx
band
targets, dry materials, hot)
Outputs, full-featured models:
Outputs, Serial­NONE
Indicators
Interface protocol
10 in. (25.4cm)
50 Ft. (15.2m) / 12 in. (30.5cm)
20 ft (6.1 m) 33 ft (10.1 m)
(external 40 VDC max.)
VDC output)
max @ 10 VDC
status (configurable) UXLR50RM : None
RS-485 models are 2-wire multi-drop addressable (addresses 1-247). Baud rates 9600 - 115200, none or even parity, 8 bits, one stop bit. OmegaVIEW configured.
typical 24VDC input +I/O
Environmental
Beamwidth
Measurement rate
Typical 45 mA @ 24VDC input +I/O
Temp: -40 to +158 F (-40 to +70 C)
shaped pattern
(10 Hz)
Default: 200 msec (5 Hz)
11
Model Name
ULR30
UXLR50 (clamped)
xxxx &
(Rear mounted)
UXLR50 (PVC)
Performance
Repeatability: 0.2% of target distance in stable environment
4100 steps over 0-10 VDC and 3279 steps over 0-20 mA (scaled between user-set Resolution (serial data)
0.0068 in. (0.172 mm)
0.0135 in. (0.343mm)
-40 to +158F (-40 to +70C) Temperature Compensated by internal sensor or
Pushbutton Teach
Cable, full outputs
6.5-ft (2m) 9-wire with shield, tinned ends, PUR. Longer cables available. M12
Cable, serial-only
6.5-ft (2m) 4-wire with shield, tinned ends, PUR. Longer cables available. M12 Max serial cable length
RS-232: 50ft (15 m), RS-485: 3937ft (1200m).
Weight
22.6 oz. (0.64 kg)
29.9 oz (0.82 kg)
29.1 oz (0.82 kg)
Housing material,
316 Stainless cylinder,
Dimensions
50: 2.3 in (59mm) x 4.8 in
50RM: 2.5 in (63 mm) x 5.9
Default: RangeMIN
10 in. (25.4 cm)
12 in. (30.5 cm)
12 in. (30.5 cm)
RS-232 or RS-485
Clamp. ( UXLR50RM: Five outputs
Part Number
Resolution (analog)
Temperature
Adjustments
(embedded)
ULR30-15NPT-xxx
UXLR50-CM-
UXLR50-15NPT-RM-xxx
UXLR50-25NPT-FR-xxx
Accuracy: Better than 0.5% of target distance in stable, homogeneous air environment; affected by temperature gradients, target echo strength, speed of sound in air or vapors.
distance endpoints)
external Reference Target
(except on serial-only models) or OmegaVIEW software (included)
OmegaVIEW software (included)
connector on 18” cable available with extension cables available
embedded
Mount
(Dia x Length)
connector on 18” cable available with extension cables available
316 Stainless, Dual 1.5 in NPT
1.2 in. (30.4mm) x 4.064 in. (103mm)
Clamp to mount UXLR50RM: rear 1.5 in NPT
(122 mm)
in (150mm)
RangeMAX Switch #1 Setpoint Switch #2 Setpoint Analog Low Endpoint Analog High Endpoint
30 ft. (9.1 m) 36 in. (91.4 cm) 48 in. (121.9 cm) 10 in. (25.4 cm) 240 in. (609 cm)
50 ft. (15.2 m) 36 in. (91.4 cm) 48 in. (121.9 cm) 12 in. (30.5 cm) 400 in. (1016 cm)
Options Interface:
Mount method:
Outputs:
1.5 in NPT both ends rear thread 1.5-in NPT)
12
PVC, Dual 2.5 in NPT
2.5 in (63.5 mm) x 5.0 in (127 mm)
50 ft. (15.2 m) 400 in. (1016 cm) 18 in. (45.7 cm) 400 in. (1016 cm) 12 in. (30.5 m)
2.5 in NPT either end
DIRECTION
OF MEASUREMENT
ULR30:
1.5 in. NPT thread (both ends)
Diameter
ULR30:
4.3 (109)
5.0 (127)

Mechanical Details

Dimensions are inches (mm). Distance is measured between the ultrasonic transducer face (the end opposite the cable) and the target.
Figure 2 - Mechanical Drawing, U-Series ultrasonic
sensors with metric thread

Mounting and Installation

Precautions

Only hand tighten the sensor and never apply a wrench to the body. When tank mounting to a domed or round tank, mount the sensor perpendicular with the target surface. Mount the sensor directly to the tank ceiling at a flanged opening. If a riser is added, it must be smooth­walled and a minimum 3-in diameter. The sensor beam width is nominally 12-14 degrees at the -3dB boundary, however surfaces outside that can return echoes as well. Round off the lower ID of the riser to prevent detection. Provide shade for outside installations to prevent erroneous measurements due to artificial heating of the sensor when temperature compensation is active. Mount the sensor away from the inner walls of tanks. Seams and fixtures can interfere with measurements.

Orientation

Orient the sensor perpendicular to the target object for best results as shown in Figure 4.
Mechanical Drawing, U-Series ultrasonic sensors with
NPT thread
UXLR50:
UXLR50 (PVC):
Not threaded
2- ½ in. NPT thread (both ends)
ULR30:
UXLR50:
UXLR50 (PVC):
UXLR50:
4.8 (121)
Figure 3 - Mechanical Drawing, U-Series ultrasonic
sensors 30 and 50
1.88 (48)
2.31 (59)
2.75 (70)
Figure 4 - Sensor Orientation
Ultrasound energy must return to the sensor or the sensor will not detect a target. Curved or spherical objects generally reflect a portion of the energy back to the sensor but with lower reflected energy. A flat surface, however, is detectable at a greater distance. Foreground interfering objects can be ignored by setting the Range MIN value in OmegaVIEW.

Maintenance & Cleaning

Dust accumulation on the sensor face can be cleaned by blowing pressurized air across the sensor face. Dust does not affect performance unless it builds on the transducer. Positioning the sensor
13
degree mounting,
NUT30-SS316
Cable
TEACH
button
Square Indicator
(green)
Rectangular
Indicator
(green)
Target Indicator (red or green)
Configuration and Communication
Configure, test and clone sensors.
facing downward rather than upward will minimize material accumulation in some applications. The sensor face can be cleaned with isopropyl alcohol or window cleaner. DO NOT use solvents such as MEK or acetone on U-Series ultrasonic sensors.

Metric U-Series ultrasonic sensors 3 and 14

These sensors are shipped with two 30mm stainless nuts. The sensor mounts through a 1.18-in (31mm) hole in a mounting plate as shown in Figure 5. This hole may be a component of the user equipment or a Omega bracket and must be rigid for best performance. Position the sensor in the hole and fasten it to the plate with the two nuts provided. The sensor position can be altered a couple of inches depending on the nut positions. If accurate close­range distance is important, position the sensor so the closest target is always beyond the dead band (also see
Range MIN on page 34).

NPT U-Series ultrasonic sensors 3 and 14

These sensors have 1-in NPT male threads at the front end to install in a 1-in NPT threaded hole, flange or 90-degree adapter. The sensor can also be held by clamp.

Mounting Hardware & Accessories

Metric U-Series ultrasonic sensors 3 and 14 series
Figure 5 - Mounting
MB30-SS90
Stainless steel, 90­non-adjustable angle
One pair (SS316). stainless steel m30x1.5 nuts
(Included with new sensor)

Software and Interconnection

The following accessories are available.
OmegaVIEW
Software
KIT-USB-232 KIT-USB-485
Compatible with all U-Series ultrasonic sensor models. Download free from www.Omega.com
PC Interface kits. Choose RS-232 or RS-485 to match sensor. Converter, terminal block, power supply, data cable included.

Rear Features

Figure 6 - Sensor Rear Features. There are four control
features available:
The
TEACH button can be used to make sensor
adjustments on USR03, 14, and 30 series sensors (or can be disabled using OmegaVIEW). Teach features are described on page 50.
The
target indicator (round) shows the target
status and other conditions. It is always ON when power is applied and will be either RED or GREEN.
The
square status indicator and rectangular
status indicator
show sensor outputs status as described in Target Indicator on page 16. Status Indicator assignments can be changed using OmegaVIEW. The factory defaults by model are:
• USR03 and 14: Square = Analog, Rectangular = data TX
• U-Series 30: Square = Switch #1, Rectangular = Switch #2
• U-Series 50: Square = Switch #1, Rectangular = Switch #2
• U-Series 50 with rear thread: No pushbutton or LEDs
• U-Series 50 in PVC: Square = data RX, Rectangular = data TX
No pushbutton
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Figure 7 - Target Indicator Functions

Target Indicator

As shown in the figure above, the a bi-color LED and provides status for the following purposes:
• Power ON
• Target status & near MIN
• Data communications
• “No SYNC” warning
• Unlocked status
• TEACH feedback (U-Series 3,14, and 30)

Power ON Status

When sensor power is ON the target indicator will be RED or GREEN. It may also be flashing at a slow or fast rate under other conditions described below and shown in figure 7.

Target Status & Near MIN

This is the primary operational purpose of the target
indicator
. The target status displays as follows:
• GREEN is a normal indication, indicating a target is detected within the sensor’s
operating range
• RED indicates no target is detected within the sensor’s
• FAST FLASH GREEN warns that the target is within 0.25 in. (6.4 mm) of
operating range.
target indicator is
range MIN.

Unlocked Status (U-Series 3, 14, and 30)

The sensor must be unlocked for TEACH adjustment. When unlocked the indicate target status (Red or Green) but will blink slowly on and off to signify TEACH readiness. ALT­Teach status is indicated by an alternating “double blink”. All filters are turned OFF when unlocked.
target indicator will continue to

TEACH and ALT-Teach Feedback (U-Series 3, 14, and 30)

When using the TEACH features to make sensor adjustments the BLINK RED (unless the TEACH functions are disabled using OmegaVIEW and the sensor is not a SYNC master or slave) as operator feedback while the
Target Status Indicator will SLOW
TEACH button is pressed. The user must count these
flashes, then release the specific number of flashes to complete a particular TEACH feature. ALT-Teach feedback is indicated by a slow “double blink”.
TEACH button after a

“No SYNC” Warning

If the SYNC feature is used (see page 33) and a slave sensor does not detect a master SYNC input, the slave will stop measuring and the indicator will slowly alternate between RED and GREEN until SYNC is restored (or the TEACH button is used on certain models).
Target Status
15

Output Status Indicators

Some U-Series ultrasonic sensors have two output status indicators at the rear of the sensor. These indicators can each show status of the analog, switch or serial data interfaces, or can be turned OFF. Indicators have default assignments and can be reassigned using OmegaVIEW. Indicator operations are shown in figure 8
In a typical installation the analog output is operating within a user-calibrated range and the normal indication is a continuously ON indicator. An OFF or blinking indicator could indicate a potential problem because the sensor is detecting a target outside the calibrated (expected) distance range.

Default Indicator Assignments

• U-Series 3 and 14: Square = Analog, Rectangular = data TX
• U-Series 30 and 50: Square = Switch #1, Rectangular = Switch #2
• U-Series 50 with Rear Mount: No indicators
• U-Series 50 in PVC: Square = data RX, Rectangular = data TX

Square Green Indicator - ■

The square status indicator can be configured using OmegaVIEW to any of the status options (analog, switch, serial data receive, serial data transmit, Reference Target, or OFF). If selected for a switch it displays the status for Switch #1. The #1 output must be configured to be a switch in order to choose Switch as the indicator. Similarly, Reference Target temperature compensation must be chosen before assigning Reference Target to the square indicator.

Rectangular Green Indicator - ▐

The rectangular status indicator can be configured using OmegaVIEW to any of the status options (analog, switch, serial data receive, serial data transmit, Reference Target, or OFF). If selected for a switch it displays the status for Switch #2. The #2 output must be configured to be a switch in order to choose Switch as the indicator. Similarly, Reference Target temperature compensation must be chosen before assigning Reference Target to the square indicator.
Switch Status
When a status indicator is selected as a solid-state
switch, it operates as follows:
• Indicator ON if
• Indicator OFF if
• Indicator blinks on and off continuously
while the due to over current or temperature.
The
Output Selection for a Switch may be either
switch is ON
switch is OFF
switch is in a safe shutdown mode
sinking or sourcing but the status indication is the
same. A
switch is considered ON when it is
conducting current (see page 23).

Analog Status

When a status indicator is selected for analog status it shows the current status of the analog output(s). The analog status is the same for voltage and current loop outputs since they share common
endpoint distances. The analog status indicator:
• is ON if the target distance is between the two analog the analog output is spanned, or
• is OFF if the target distance is equal to or outside the low value endpoint distance. The sensor output will be 0 VDC, 4 mA or the OmegaVIEW adjusted low analog output value, or
• blinks ON-OFF if the target distance is equal to or outside the high value distance. The sensor output will be 5/10 VDC, 20 mA or the OmegaVIEW adjusted high analog output value.
endpoint distances over which
endpoint

Serial Data Status

In systems using serial data communications a status indicator(s) can be configured using OmegaVIEW to either (a) RX flash upon receiving any data (regardless of validity or baud rate), or (b) TX flash upon transmitting data (responding to a valid command). A TX indicator will also flash each time data is transmitted in the ASCII streaming mode.

Reference Target Status

Either status indicator can be configured to light when the reference target is available and go out if it is lost. Available only in Reference Target temperature compensation mode.
16
Figure 8 - Output Status Indicator Operations
Output Status Indicators (■ &▐): Analog,
switch, reference target, and/or data status is shown on the square indicator (■) and/or rectangular indicator ( using OmegaVIEW. Analog status appears for current loop or voltage outputs, and Switch Status for sinking or sourcing switch outputs. Reference target is to monitor for that type of temperature compensation.
▐ ). Default assignments may be changed
Analog Status: The above two analog examples
show an increasing analog slope (top) and decreasing slope means the output value increases proportional to the measured distance and vice versa. A fast flashing analog indicator means the analog output is at the high current output value (10 VDC, 5 VDC, 20 mA, or user value entered in OmegaVIEW). An OFF analog indicator means the analog output is at the low
analog slope (bottom). An increasing
endpoint voltage or
endpoint voltage or current output value (0 VDC, 4
mA, or user value entered in OmegaVIEW). The analog status is solid green when the measurement is within the normal (calibrated) range.
Switch Status: The indicator will light green when
the associated switch is ON. An ON-switch means is it conducting current, and an OFF
switch not. A
sinking switch output that is ON will have an output
value near ground (0 volts). A that is ON will have an output value near the power supply voltage. The three switch examples shown above demonstrate a closer than the
switch that is ON at distances
setpoint (ON closer), farther than the
sourcing switch output
setpoint (ON Farther) and a FAULT condition
(overload or over temperature). During a FAULT the switch is turned OFF. Normal switch operation restores automatically when the fault is removed
.
Analog and Switch Outputs if No Target: If no
target is detected (target indicator is red) the analog output will hold the last value and the switch outputs will turn off after 1 second. These responses can be changed in OmegaVIEW by changing the “No Target Voltage” and “No Target Current” selections.
Data Status: The status indicator will flicker ON
when the sensor receives (RX status) or responds (TX status) to a Modbus command over the serial data interface.
17
Wire Function
U-Series 3 and 14
(6-wire cable)
U-Series 30 and 50 Series
(9-wire cable)
Brown
+DC input voltage (Power Input)
Blue
-DC input and signal common (Ground)
RS-232 models: RS-232 out
RS-485 models: RS-485 -
(note 2)
RS-232 models: RS-232 in
Silver
Output #1 (note 1)
or OFF
Output #2 (note 1)
OR OFF
Green
Current sourcing output
Orange
Violet
Voltage output

INTERFACES

Wires Identification

U-Series ultrasonic sensors have an attached, embedded 6.5ft cable as standard. It is a shielded 4-wire, 6-wire or 9-wire cables with the following wire assignments:
Wire
Color
Gray (data #1)
(note 2)
Yellow (data #2)
Black
White
RS-485 models: RS-485 +
Cable shield (bare stranded wire), unterminated at sensor end
4-20 mA sourcing loop (note 3)
OR Sinking Switch #1
OR Sourcing Switch #1
0-10 VDC (note 3)
OR Sinking Switch #2
OR Sourcing Switch #2
Sinking Switch #1 (note 3)
Sinking Switch #2 (note 3)
OR
Sourcing Switch #1
OR
Sourcing Switch #2
These wires are not on
U-Series 3 or 14 Sensors
Notes: (1) Output selection for the black and white wires of U-Series 3 or 14 sensors are made via OmegaVIEW (page 46) (2) Output determined by sensor model. The gray and yellow wires are also used for synchronization (page33) (3) Factory default selections (can be changed using OmegaVIEW)
Table 1 - Wire Assignments
Tinned ends are standard. Connectorized cables are also available, as are other cable lengths.
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Current sinking output
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