Dwyer ULL User Manual
Series UL Transmitters
TM
Specifications - Installation and Operating Instructions
Bulletin L-UL
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com
Phone: 219/879-8000 www.dwyer-inst.com
able of Contents
T
hapter 1. Introduction
C
pecifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
S
Measuring Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Chapter 2. Installation
recautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
P
nstalling the Unit on Threaded Flange/Thread-Free Flange . . . . . . . . . . . . . . . .3
I
nstalling the Unit via Extension Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
I
sing a Conduit Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
U
Non-Intrinsically Safe Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Power Supply and Load Resistance Recommendations . . . . . . . . . . . . . . . . . . .4
hapter 3. Set Up
C
eries UL Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
S
et Up and Function Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
S
Resetting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Entering Distance to Empty Level (Tank Height) . . . . . . . . . . . . . . . . . . . . . . . . . .6
Defining Interfering Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Configuring 4 mA Current Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
onfiguring 20 mA Current Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
C
electing Low/High Dynamic Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
S
efining Working Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
D
Selecting Distance or Level Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Entering Factor for Gas Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Restoring the Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Shifting the Blocking Distance (SBD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
erifying the Version Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
V
efining 22 mA Signal Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
D
Chapter 4. Open Channels (ULF)
Selecting the Flow Measurement Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Open Channel Flow Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Flume/Weir Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Flumes/Weirs - European Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Rectangular Suppressed Sharp - Crested Weir (Type 1) . . . . . . . . . . . . . . . . . .11
Rectangular Contracted Sharp - Crested Weir (Type 2) . . . . . . . . . . . . . . . . . . .11
Trapezoidal (Cipolletti) Sharp - Crested Weir (Type 3) . . . . . . . . . . . . . . . . . . . .11
V-Notch (Triangular) Sharp - Crested Weir (Type 4) . . . . . . . . . . . . . . . . . . . . . .11
Khafagi-Venturi Flume (Type 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Parshall Flume (Type 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Palmer Bowlus Flume Trapezoidal Throat Cross-Selection (Type 7) . . . . . . . . .12
H Flume (Type 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Neyrpic Venturi Flume/Long-Base Weir (Type 9) . . . . . . . . . . . . . . . . . . . . . . . .13
Flumes/Weirs – American Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Rectangular Suppressed Sharp - Crested Weir (Type 1) . . . . . . . . . . . . . . . . . .13
Rectangular Contracted Sharp - Crested Weir (Type 2) . . . . . . . . . . . . . . . . . .13
Trapezoidal (Cipolletti) Sharp - Crested Weir (Type 3) . . . . . . . . . . . . . . . . . . . .13
V-Notch (Triangular) Sharp - Crested Weir (Type 4) . . . . . . . . . . . . . . . . . . . . . .13
Parshall Flume (Type 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Palmer Bowlus Flume Trapezoidal Throat Cross-Selection (Type 6) . . . . . . . . .14
H Flume (Type 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Leopold-Lagco Flume (Type 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
able of Figures
T
igure 1: Front and Side View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
F
igure 2: Threaded Flange/ Thread - Free Flange Monitoring . . . . . . . . . . . . . . . . .3
F
Figure 3: Extension Pipe Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 4: Conduit Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 5: Non-Intrinsically Safe Positive Ground Connection . . . . . . . . . . . . . . . . . .4
igure 6: Non-Intrinsically Safe Negative Ground Connection . . . . . . . . . . . . . . . . .4
F
igure 7: Functions Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
F
igure 8: Display and Function Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
F
igure 9: Scan Distance Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
F
Figure 10: Defining Working Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Figure 11: Rectangular Suppressed Sharp - Crested Weir . . . . . . . . . . . . . . . . . . .11
Figure 12: Rectangular Contracted Sharp - Crested Weir . . . . . . . . . . . . . . . . . . . .11
igure 13: Trapezoidal (Cipolletti) Sharp - Crested Weir . . . . . . . . . . . . . . . . . . . . .11
F
igure 14: V-Notch (Triangular) Sharp - Crested Weir . . . . . . . . . . . . . . . . . . . . . . .11
F
igure 15: Khafagi-Venturi Flume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
F
Figure 16: Parshall Flume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Figure 17: Palmer Bowlus Flume Trapezoidal Throat
Figure 18: H Flume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
igure 19: Neyrpic Venture Flume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
F
igure 20: Long-Base Weir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
F
igure 21: Rectangular Suppresses Sharp - Crested Weir . . . . . . . . . . . . . . . . . . .13
F
Figure 22: Rectangular Contracted Sharp - Crested Weir . . . . . . . . . . . . . . . . . . .13
Figure 23: Trapeziodal (Cipolletti) Sharp - Crusted Weir . . . . . . . . . . . . . . . . . . . . .13
Figure 24: V-Notch (Triangular) Sharp - Crested Weir . . . . . . . . . . . . . . . . . . . . . .13
Figure 25: Parshall Flume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
igure 26: Palmer Boweus Flume Trapezoidal Throat
F
igure 27: H Flume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
F
Figure 28: Leopold Lagco Flume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 29: Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Cross-Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
ross-Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
C
Chapter 5. Troubleshooting
22 mA Signal Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Appendix A – Gas Factor Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Appendix B – Installation Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Appendix C – Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Page 1
hapter 1: Introduction
C
he unit is available in three separate series: The ULB for solids, the ULL for
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iquids, and the ULF for open channel flow liquids.
l
Depending on the series, the unit can be used for the following measurement tasks:
• Dust-free tanks with solids (ULB)
• Open channel flow (ULF)
Liquid tanks with calm surfaces (ULL)
•
he ULF and ULL have a range of up to 49.21 ft (15 m) with an accuracy of 0.25%
T
f the maximum measuring range (version dependent).
o
The ULB has a range of up to 28 ft (8.5 m) with an accuracy of 0.25% of the
maximum measuring range (version dependent).
Figure 1 : Front and Side View
PECIFICATIONS
S
ervice: ULB: Bulk solids, ULF/ULL: Compatible liquids.
S
etted Materials: Sensor: Polypropylene or PVDF (upon request), Acoustic
W
indow: ECTFE.
W
Ranges: (see “Measuring Ranges”).
Accuracy: 0.25% of max range (at 20°C).
Resolution: 0.04˝ (1 mm).
lind Zone: (See “Blind Zone”).
B
eam Angle: 5° @ 3db point.
B
emperature Limits: -40 to 158°F (-40 to 70°C).
T
emperature Compensation: Automatic.
T
Pressure Limits: 13.5 psi (0.9 bar) to 30 psi (2 bar).
Power Requirement: 18 to 28 VDC.
Output Signal: 4 to 20 mA.
ax. Loop Resistance: 727 Ω at 28 VDC.
M
lectrical Connection: Screw terminal.
E
onduit Connection: 1/2˝ NPT conduit or cable gland (optional).
C
Process Connection: 2˝ NPT or 2˝ BSP (optional).
Enclosure Material: ABS and UV resistant.
Enclosure Rating: NEMA 4 (IP65).
Mounting Orientation: Vertical.
emory: Non-volatile.
M
isplay: 4 character LCD.
D
nits: ft, m (upon request).
U
Programming: 4 button.
Weight: 3.1 lb (1.4 kg).
Measuring Ranges
0.82 to 11.5 ft
0.25 to 3.5 m
1.96 to 28 ft
.6 to 8.5 m
0
.82 to 16.4 ft
0
0.25 to 5 m
1.96 to 49.2 ft
0.6 to 15 m
0.82 to 16.4 ft
0.25 to 5 m
1.96 to 49.2 ft
0.6 to 15 m
LB for solids
U
ULF for openchannel flow
ULL for liquids
tandard
S
Extended
Range
Short
Range
Standard
Short
Range
Standard
Blind Zone (Measured from the tip of the sensor)
ULB-11
ULL-1XXX
ULF-X1-XXX
ULB-12
ULL-2XXX
ULF-X2-XXX
0.8 ft (0.25 m)
1.96 ft (0.6 m)
Page 2
hapter 2: Installing the Unit
C
recautions
P
Ensure that the unit is mounted in an area that meets the stated temperature,
•
pressure and technical specifications.
• Ensure that high-voltage sources or cables are at least 40˝ (1 m) away from the
sensor and its cable.
Use round cables with minimum diameter of 0.24 to 0.28˝ (6 to 7 mm) to ensure
•
hat the unit remains sealed per IP65 standards.
t
Ensure that cables are routed correctly and tightened along walls or pipes.
•
Installation and operation of this product should be performed according to the
•
Product Installation and Operating Instructions. Otherwise the use of this product
is prohibited.
hen installing the unit ensure that it is:
W
Mounted above the dead-zone area.
•
OTE: If the device enters the blocking distance (dead- zone
N
or blind zone), it will not measure correctly.
• Positioned at least 1.64 ft (0.5 m) away from the tank walls.
Add 4˝ (10 cm) spacing for each 40˝ (1 m) in range.
nstalling the Unit on Threaded Flange/Thread-Free Flange
I
he unit is available in 2˝ NPT or 2˝ BSP (upon request).
T
he unit can be installed with threaded-flange mounting or with thread-free flange
T
mounting, as shown below:
igure 2: Threaded Flange/Thread-Free Flange Mounting
F
OTE: When installing a thread-free flange mounted unit, you will need a 2˝
N
(50.8 mm) locking nut to secure the unit inside the tank.
To Install the Unit:
1. Insert the threaded end of the unit into the opening at the top of the tank or pipe.
. Bolt the unit into place in one of the following ways:
2
Threaded-flange mounting: Screw the unit into a flange with a threaded
•
˝ (50.8 mm) hole.
2
• Thread-free mounting: Place the unit in the flange, and bolt it from within
the tank with a 2˝ (50.8 mm) locking nut.
• Perpendicular to the surface of the target.
NOTE: Even the slightest difference in angle may affect echo
quality.
• Placed as far as possible from noisy areas, such as a filling
inlet.
NOTE: When installed in a humid environment it is
recommended to position the sensor on a tripod on top of the
vessel.
NOTE: Tighten the locking nut hand tight only. When tightening the nut, hold the
lower part of the unit, and make sure that the seal is leak proof.
Page 3
nstalling the Unit Via Extension Pipes
I
f the level of the measured surface falls within the dead-zone, (blind zone) area,
I
ou should use an extension pipe to mount the unit.
y
When using an extension pipe, ensure that:
• The sensor is positioned in the center of the pipe.
• The pipe extension is exactly perpendicular to the surface
f the target.
o
The internal pipe diameter is at least 3.0˝ (76.2 mm) wide.
•
The pipe is preferably made of plastic and must have a
•
mooth interior surface.
s
• The pipe should not protrude inside the tank.
• The tank opening should be at least the size of the internal
pipe diameter and have a smooth edge.
hen installing the unit with extension pipes, measure from sensor’s lower edge
W
nd follow these specifications:
a
ipe Length
P
1.64 ft (0.5 m)
OTE:
N
. It is always recommended to use the interference signal feature (Pr03) to locate
1
nterfering signals when using an extension pipe.
i
2. The sensor's lower edge may be
a) aligned with the extension pipe's upper edge or
b) protrude it by up to 2.56˝ (6.5 cm). See Figure 3 below:
Internal Pipe Diameter
≥ 3.0˝ (76.2 mm)
on-Intrinsically Safe Connections
N
Figure 5: Non-Intrinsically Safe Positive Ground Connection
Figure 6: Non-Intrinsically Safe Negative Ground Connection
ower Supply and Load Resistance Recommendations
P
The following table specifies the recommended resistance range for each power
supply voltage (Non-Intrinsically Safe).
Power Supply
Voltage
18 V
24 V
28 V
Minimum
Resistance Value
0 Ω
41 Ω
68 Ω
Maximum
Resistance Value
272 Ω
545 Ω
727 Ω
a
Figure 3: Extension Pipe Recommendation
Using a Conduit Adapter
1. Remove the four retaining screws from the conduit adapter cover.
2. Pull the electrical wires through the 1/2˝ NPT conduit connection or gland.
3. Connect the -24 V wire to Terminal 1, connect the +24 V wire to Terminal 2 on
the wiring block.
4. Return the adapter's cover to its place properly. Make sure that the O-ring is
placed correctly. Fasten the four retaining screws.
Figure 4: Conduit Adapter
NOTE: The conduit adapter should not exceed a torque of 50 lb-in.
To maintain a proper seal, make sure that conduit is firmly screwed to the conduit's
adaptor.
b
NOTE: The resistance value is the total sum of the series resistor (or PLC
resistance) and the lines resistance. The minimum voltage level on terminals
should not be less that 18 VDC.
To maintain a proper seal, make sure that conduit is firmly screwed to the conduit's
adaptor.
Ripple/Noise Parameters Recommended for the Power Supply
The following ripple/noise parameter is recommended for the power supply:
• 100 mV p-p max.
Power Supply Types Recommendations
• Prefer a regulated switching power supply.
• A rectified power supply is not recommended.
• When powering by a battery, avoid the using of switched charger.
Feeding Via PLC
• Verify that the voltage level on the unit’s terminals is at least 18 VDC.
• Check PLC specifications for grounding options.
• It is good practice to add a 150 Ω series resistor between the unit's positive
terminal and the PLC.
Page 4
hapter 3: Setting Up and Calibrating the Unit
C
his chapter explains how to set up and calibrate the unit for accurate
T
easurement monitoring.
m
he unit is supplied with preprogrammed default settings, making it ready for
T
immediate operation. There is no need to change the default settings, unless you
wish to calibrate the unit for your specific requirements; however, it is
recommended that you replace the default tank height value with the actual tank
eight, as described on page 6. When using the unit, the tank height is calculated
h
s the distance from the surface of the sensor to the bottom of the tank. You should
a
nter this value whenever tank height is required. (For flow measurement, enter the
e
recise flume height.)
p
The ULF, ULL and ULB units contain eleven, ten and nine programs respectively.
These programs are referred to as functions, which enable you to change the
efault settings and calibrate as required. These functions are accessed from a
d
unctions menu. The functions Pr01, Pr02, Pr04 and Pr05 are the most important
f
o ensure correct usage of your device (with the addition of Pr00 if using the
t
appropriate ULF series). Function Pr03 may be used if there are interfering signals.
The remaining functions (Pr06, Pr07, Pr08, Pr09 and Pr10) enable you to
customize the unit for your monitoring requirements or to restore factory default
settings.
he diagram below shows the functions available in the functions menus for the
T
eries ULF, ULL and ULB. Some functions are only relevant for particular series.
S
sing Series UL Functions
U
he LCD display screen, functioning in "normal" mode, provides continuously
T
pdated measurement readings. The display screen is also used to view the
u
enu options, function settings and data values, accessed by using the function
m
buttons.
The picture below shows the upper part of the unit.
Figure 8: Display and Function Buttons
The function buttons are used to perform various operations, summarized in the
ollowing table.
f
utton
B
Uses Include:
• Accessing the functions menu (when pressed
simultaneously with )
Selecting functions
•
Progressing to the next step of a function
•
• Moving from left to right between displayed digits
• Saving changes to data
• Accessing the functions menu (when pressed
simultaneously with )
• Exiting the functions menu to restore the
distance reading
• Moving from right to left between displayed digits
• Exiting a function without saving changes
• Clearing error messages
• Scrolling through the functions menu
• Scrolling through available data values in
functions
• NEXT button only: Recording interfering signals
or
Figure 7: Function Menus
Setting flow measurement parameters (function Pr00) for the Series ULF (Open
Channels) is described in Chapter 4, Open Channels (ULF). Setting parameters
for all other functions and accessing the functions are described in this chapter.
NOTE: Within some functions, the digits in the displayed value can be individually
modified. This is indicated by a flashing digit (flashing digits are shown in gray in
the display illustrations. In this case, the ENT and ESC buttons enable you to move
between the digits. Each flashing digit can be modified using the BACK and NEXT
buttons.
Start Up and Function Access:
Page 5
Press/Action
Connect unit to
power supply
After a brief pause
and
(simultaneously)
or
Display:
For example:
For example:
Explanation
Temporary display while
unit takes a reading.
Distance reading.
Enters the functions
menu.
Used to search for the
required menu selection.
Accesses the selected
function.
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