ANFIELD ULS User manual

ULS
Owner’s Manual
Version: 0.0
Released: 12/2021

2 ULS Owner’s Manual Rev 0.0
Released: 12/2021
1General Description
The ultrasonic level sensor measures level or distance and has a 4-20 mA analog output and 4 digital outputs. It
is a robust option for level sensing that offers flexibility and precision. The device is configurable either by
push-button programming with a LED display or through a USB software interface.
2Features and Benefits
Non-contact continuous level measurement with analog output, four switches and control functions
for distance of up to 82.68” (2.1 m),
Fast programming through USB software interface or field-adjustable programming through push
button interface and display,
LED display indicates current measurement in inches or centimeters with 0.01” (1 mm) resolution,
Precise 12-bit 4-20 mA output with invert 20-4 mA option,
Four programmable relays each able to handle up to 200 mA peak load current,
Selectable signal processing, fluid compensation, failsafe features that enable optimization for
installation,
Robust all-metal enclosure with 316SS port for corrosive environments,
Automatic temperature compensation for accurate measurements.
3Table of Contents
1General Description .............................................................................................................................................2
2Features and Benefits..........................................................................................................................................2
3Table of Contents.................................................................................................................................................2
4Specifications .......................................................................................................................................................3
5Installation............................................................................................................................................................4
6Electrical Connection ...........................................................................................................................................7
7Display Elements..................................................................................................................................................7
8Menu Hierarchy................................................................................................................................................... 8
9Parameter Selection .......................................................................................................................................... 10
10 Setting up the ULS ............................................................................................................................................. 12
11 Troubleshooting/FAQ ........................................................................................................................................ 19

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4Specifications
Performance
Sensing accuracy1
0.5% of maximum operating distance (perpendicular to surface)
Sensing resolution
0.027” (0.69 mm)
Minimum operating distance3
5.4” (138 mm)
Maximum operating distance3
82.68” (2.1 m)
Temperature error2
2%
Transducer
Beam angle
12° ± 2°
Deadband3
4.33” (110 mm)
Ultrasonic frequency
112 kHz ± 4.5 kHz
Interface
User interface
Field adjustable (push buttons and display)
Software adjustable (Microsoft® Windows® with micro-B USB)
Display resolution
0.01”(1 mm)
Memory
Non-volatile
Electrical
Supply voltage
10 –30 VDC (100 mA maximum)
Maximum power consumption
1.2 W
Analog output
12-bit 4-20 mA output
Analog conversion error
<0.5%
Signal failsafe
2 mA, 4 mA, 20 mA, 22 mA or hold last
Hysteresis
Adjustable
Contact type
(4) Normally open SPST relays (48 VDC 200 mA peak load current)
Contact failsafe
Power loss: open
Environment
Ambient temperature
14 °F to 140 °F
(-10 °C to 60 °C)
Enclosure rating
IP 65
Enclosure material
Powder coated aluminum
Transducer material
Glass reinforced epoxy
Cable jacket material
PVC
Cable type
8-conductor, shielded
Process connection
1” NPT (Stainless Steel)
1- Accuracy specification in stable homogeneous standard environments (affected by temperature gradients, vapors,
supply voltage).
2- Thermal error specification defined for supply voltage of 12V and 24V. Error may be larger for other voltage inputs
or due to localized heating of tank or sensor.
3- Operating distances referenced from bottom of enclosure. Deadband referenced from sensor bottom.

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5Installation
Locating the ULS and Application Considerations
The ultrasonic level sensor (ULS) is a non-contact distance measurement device that uses a sound wave that is
sent out from the bottom of the sensor to the target medium and returned back to the sensor. Due to the
operating principle of the ULS, the positioning of your device in your application needs to account for how the
sensor signal is transmitted to ensure proper measurement in all boundaries of operation.
Positioning of the Mount
As the sound wave generated from the device travels through air, it will grow in size. This
larger size creates a greater detection area at further distances. But, this detection area has
a drawback; it needs to be clear of any object or interference that could reflect the sound
wave.
The simplest approach is to position the mount away from walls and obstructions ensuring
that the obstructions are further than the beam radius using the following guideline:
Operating Range
Beam Radius
[feet]
[cm]
[inch]
[cm]
0.33
10
1
2.5
0.66
20
1.4
3.6
1
30
2
5.1
2
61
3.5
8.89
3
91
5
12.7
4
122
6.5
16.5
5
152
8
20.3
6
183
9.5
24.1
6.56
200
10
25.4
Orientation of the ULS
The device can accommodate perpendicularity errors between the thread axis and the
stationary fluid surface of ± 3°. As the orientation error increases, the device at first will lose
maximum range as the reflected signal strength decreases until no reflected sound is
transmitted to the device and the signal is not received.
Temperature
The device measures the level or distance by calculating the speed that the sound wave
travelled through the air and compensates for temperature variation using an internal
sensor. For accurate temperature measurement, there are two possible errors:
Error Source 1: Unit’s operating temperature is biased from external inputs.
Protect the unit from all external heat sources such as sunlight by using a thin,
reflective and low emissivity radiant barrier between the unit and the heat source.
Error Source 2: Tank temperature is not the same as ambient temperature.
Ideally keep tank and sensor at ambient temperature. A variation between
temperatures will cause the sensor to measure incorrectly.
NOTE: If signal is not received, a LOSS warning will appear on the display and will
default to failsafe settings. Generally, signal loss is caused by perpendicularity errors or
exceeding device’s maximum operating range.

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Riser
After sending a sound wave, an ultrasonic sensor needs time to settle before it can start listening for the echo.
This time delay results in a distance that cannot reliably measure because it is not listening which is commonly
called the deadband, or minimum operating distance. If the target medium were to enter the deadband, the
device may not be able to consistently measure any target. It is mandatory that the unit is positioned away
from the target medium to avoid the deadband.
If your fluid tank needs to be fully filled, then the unit will need to be placed on a riser. The following is the
recommended riser guidelines.
Inner
Diameter
Maximum
Standpipe
Height
2 “ (5 cm)
4” (10 cm)
4 ” (10 cm)
8” (20 cm)
6 ” (15 cm)
12” (30 cm)
Foams
The surface quality of your target can impact the strength of the return signal causing sensing issues. If the
target surface has a foam layer, the amount of energy reflected in the return echo will be reduced. If possible,
mounting the unit in a location with minimal foam is the best practice. If the location is fixed, then using a
stilling well is necessary to avoid signal issues from foam.
Vapors
The device is configured for measurements in air. If the tank is closed and contains liquids that create vapors, it
will affect the accuracy of the measurement and may impact the maximum operating distance.
Tank Shapes
In some cases, the shape of the tank can cause inconsistent measurements by the way the signal reflects in the
tank. Validate that the unit is placed using the following guidelines:
1. Tank top
Do not install the unit in the center of a dome top tank. The ideal mount position for cylindrical
tanks is between 1/3 and 1/2 of the radius of the tank.
2. Tank bottom
Cone and rounded bottom tanks can have issues depending upon unit placement and fluid level.
The sensor signal may be lost if the fluid level lowers such that the angled or curved tank wall that
is exposed, which the sensor is directly above, reflects the sensor signal. The reflected sound
wave may not return to the unit or it can provide inaccurate measurements.
NOTE: The inner rim of the standpipe must be smooth and free of burrs.

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Stilling Well
A stilling well is a pipe that goes below the minimum level of the fluid. The stilling well allows for easy
mounting: it can be near obstructions, reduces orientation requirements, avoids foam’s negative influence on
the sensor and reduces turbulence of the fluid.
A stilling well should have these features:
1. The stilling well pipe can made of any material,
2. Select a pipe that is 2” ID (51 mm) or greater,
3. Attach the ULS to the stilling well with a coupling and
a reducer bushing,
Use a plastic fitting such as P/N TM3216
4. The stilling well should exceed the sensing range of
the application,
The bottom of the pipe should always be
submerged to avoid foam from entering the pipe
5. A 1/4” cross drilled ventilation hole within the sensor
deadband,
6. A 45° angle cut on the bottom of the pipe if there is a
chance the fluid will lower more than the pipe
bottom,
7. The placement of the unit should be away from pumps as the level will vary during pump operation.
Mounts
For ease of installation, it is suggested that the non-metallic fittings be used. The unit should only be tightened
to finger-tight (15 inlb to 20 inlb). The following are the recommended fittings for your application:
1) Installation in existing fittings or with stilling wells
The isolation mount, P/N TM3216, provides excellent isolation between the sensor and a metallic
fitting. The isolation mount can be threaded directly into a 2” NPT adaptor, or it can be threaded
into a pipe adaptor and a threaded pipe.
2) Installation on a tank with a flange
The flange mount, P/N FM16, can be mounted directly to a tank. It uses a 4-bolt-circle pattern at
3.125” [79.4 mm]. Flange gaskets are sold separately.
NOTE: The pipe bottom should never be exposed to air. If exposed to air, the reflected sound may not
return to the sensor.
Figure 1: P/N TM3216 (left) and in a stilling well (right)
Figure 2: P/N FM16 (left) and on a tank (right)

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6Electrical Connection
Depending upon your device configuration, some wire may not be used. Terminate unused wires.
Current Output Connection
Relay Output Connection
7Display Elements
The device has a 4-digit LED display with status LEDs on the side. The display shows either the current
measurement (in inches or centimeter) or the menu parameter. Following is a breakdown of the pushbutton
menu.
Wire Color
Description
RD
Red
+VDC (10-30 VDC 100 mA)
BK
Black
-VDC
WT
White
4-20 mA output
YL
Yellow
Relay Common
BL
Blue
Relay 1 (SSR1)
OR
Orange
Relay 2 (SSR2)
GN
Green
Relay 3 (SSR3)
BN
Brown
Relay 4 (SSR4)
M
Memorize
1
Relay 1 (SSR1) Make Status LED
>>
Up
2
Relay 2 (SSR2) Make Status LED
>>
Down
3
Relay 3 (SSR3) Make Status LED
E
Enter
4
Relay 4 (SSR4) Make Status LED
Set
Settings Mode LED
Inch
Inch Mode LED
USB
USB Communication Port

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8Menu Hierarchy
Explanation of Run Mode
(blank)
Display off / quick press any key to wake up screen.
190.5
Latest measurement / displays latest filtered measurement based upon system units, reference
(height/level mode) or distance from sensor datum (distance mode).
VL
Under limit warning / measurement is below minimum operating distance. If it persists,
Ensure no object (burr, weld, target) within deadband,
Ensure unit is not over-tightened.
OL
Over limit warning / measurement is above maximum operating distance. If it persists,
Check installation to maximize operating distance,
Ensure target is within maximum operating distance
LOSS
Signal loss / sensor does not receive an acceptable signal. If it persists,
Ensure target is within operating distance,
Check unit alignment to target surface.
NOTE: The displayed parameters are an example. Your parameters may not be setup to the same values.

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Explanation of Menus
Explanation of main menu
vnit
System unit setting / selection between inches [inch] and centimeters [cent].
rEF
Zero reference parameter defines zero when in level measurement mode. Used for defining the 4
mA output and acts as a relay distance parameter limit. See Setting the Zero Reference Value for
details.
SPAN
Maximum level for fluid sensing using reference parameter as zero. Used for defining the 20 mA
output and acts as a relay distance parameter limit. See Setting the Span Value for details.
rLY
Relay menu / selection opens relay menu.
EF
Extended functions / selection opens extended functions menu.
rtn
Exit main menu and return to current measurement.
Explanation of relay menu
rLY1
Relay 1 parameter menu / selection opens the relay 1 parameter menu.
rLY2
Relay 2 parameter menu / selection opens the relay 2 parameter menu.
rLY3
Relay 3 parameter menu / selection opens the relay 3 parameter menu.
rLY4
Relay 4 parameter menu / selection opens the relay 4 parameter menu.
rtn
Exit relay menu and return to main menu.
Explanation of relay parameter menu
SPx
Set point parameter for relay [x] / selection shows the current reset point with up and down
arrows for adjustment.
rPx
Reset point parameter for relay [x] / selection shows the current reset point with up and down
arrows for adjustment.
CnFx
Switch configuration parameter for relay [x] / selection opens the configuration of the relay with
options of normally closed [NC], normally open [NO], or off [OFF].
rtn
Exit relay parameter menu and return to relay menu.
Explanation of extended functions menu
SAFE
Fail-safe analog output / selection of fail-safe 2 mA (A 1), 4 mA (A 2), 20 mA (A 3), 22 mA (A 4), or
hold.
FrES
Factory reset / selection will go to additional confirmation to rewrite over the current settings in
temporary memory.
FLIP
Flip the measurement mode / selection will show current setting. Changing current setting will
turn off all relays.
dIAg
Diagnostic menu for device and OS information for troubleshooting.
PASS
Pass-band filter / selection for a tight pass-band (FLAt) or looser pass-band (FLUC)
FILT
Running-mean filter / selection of a 3 samples average (FStr), 9 sample average (FAST), or 30
sample average (Slo).
rdAP
Relay damping / selection of a 5 second delay to relay switching (rSLO) or a 0.5 second delay to
relay switching (rFST).
dc
Supply voltage temperature compensation / selection optimizes temperature compensation
based upon the input voltage supply: 12 DC (12dc) or 24 DC (24dc).
rtn
Exit extended functions menu and return to main menu.
NOTE: The measurement mode (level or distance) affects the relay operation. Select measurement mode
prior to setting up relays. See Selecting your Measurement Mode for more details.

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9Parameter Selection
During parameter setting, the unit will continue to operate. Changes to parameters will change the temporary
memory for the parameter. All settings that are not saved to memory are temporary and will be reverted after
a power cycle.
General Setting Features
When setting a parameter the following steps need to occur:
1
Go to parameter
If display is off, press any key to turn it on.
Press [E] to enter the main menu or sub
menus.
Scroll using [ ] or [ ] until the desired
parameter name is displayed.
2
Adjust parameter value
Press [E] to enter the adjustment of the
parameter.
Press [ ] or [ ] until the desired value is
displayed.
NOTE: A short press has small increments and a
long press has larger increments.
Press [E] to store the adjustment to
temporary memory.
3
Save parameters to memory
WARNING
All adjusted parameters are stored in
temporary memory which will not be retained
after power loss.
To save all parameters to memory, press
and hold [M] for 5 seconds.
Screen will flash EEPr to indicate saving
and return to Run Mode.
Returning to Run Mode
Wait 30 seconds without no input to return to run mode ,
Or, press [ ] or [ ] until [rtn ] is displayed and press [E]. Repeat until current measurements are
displayed,
Vnit
ref
205.0
204.0
EEPr