DeFelsko PosiTector UTG User manual

Instruction Manual
Advanced model
Ultrasonic Thickness Gage

Introduction
1. Remove the protective rubber cap from the probe.
2. Power-up Gage by pressing the center navigation button.
3. Zero the probe (pg. 8).
4. Verify accuracy and adjust if necessary (pg. 7).
5. Measure the part (pg. 5).
1
The PosiTector UTG isahand-held Ultrasonic Thickness Gage that
uses the non-destructive ultrasonic pulse-echo principle to measure
the wall thickness of a wide variety of materials. It consists of a body
(Standard or Advanced) and probe.
Menu Operation
To access the Menu, power-up the gage, then press the center
navigation button . Either the keypad or touch screen can be
used to navigate the menu. If desired, touch screen functionality
can be disabled within the Setup menu (See Touch, pg. 12).
Select a menu option by touching it, or use the and but-
tons to highlight the desired option and press to select it.
On menus longer than one page, the current page number is dis-
played below the menu name. Navigate between pages using
when the first menu item is selected, or when the last
menu item is selected. If using touch, navigate between pages
by touching or , or by swiping up or down.
Press the button to power up the Gage. To conserve battery
life, the gage will automatically go to sleep after 5 minutes of
inactivity. While in Sleep Mode, the gage powers up significantly
faster— convenient when moving between parts or locations. The
gage will completely power off after 4 hours of inactivity.
Alternatively, select Power Off from the main menu. All settings
are retained.
Quick Start
Press the button or swipe right to return to a previous screen.
Select Exit to close the Menu.

2
Current
Measurement
Currently
selected
material or
velocity of
material
Unit of
Measurement
Battery Icon
Measurement
Mode currently
set to multiple-
echo (UTG M /
UTG P probes only)
Typical Display
When a Menu option is highlighted, the
icon indicates on-gage help is available.
Press or touch the icon to display the
help. A formatted PDF containing all on-
gage help items is available at
www.defelsko.com/help
indicates that a sub-menu exists for the
Menu option. Select the option to display its
sub menu.
Update your gage to ensure that you
have the latest on-gage help information.
NOTE:
The Coupled symbol appears
when the probe is ultrasonically
connected with a surface.

3
When powered up the PosiTector automatically
determines what type of probe is attached and does a
self-check.
To disconnect a probe from a body, slide the plastic probe
connector horizontally (in the direction of the arrow) away
from the body. Reverse these steps to attach a new
probe. It is not necessary to power-down the Gage when
switching probes.
Additionally, the PosiTector gage body accepts a wide variety of
probe types including magnetic, eddy-current, and ultrasonic
coating thickness, surface profile, environmental, hardness, salt
contamination and ultrasonic wall thickness probes. See
www.defelsko.com/probes
•PosiTector UTG CA / UTG C – dual element, single-echo
probe ideal for measuring severely corroded/eroded materials.
PosiTector UTG CA models feature a built-in probe, while
PosiTector UTG C models feature a probe mounted on a 1 m
(3 ft) cable.
•PosiTector UTG CX - same specifications as UTG C above,
but includes a braided stainless steel cable jacket and
reinforced strain reliefs for protection in demanding
environments.
•PosiTector UTG CLF – dual element, single-echo probe
designed for measuring thick and/or attenuative materials such
as cast iron.
•PosiTector UTG M – single element, multiple-echo probe
features Thru-Paint capability designed to quickly and
accurately measure the metal thickness of a painted structure
without having to remove the coating.
•PosiTector UTG P – single element probe with automatic
single-echo or multiple-echo (Thru-Paint) mode depending on
material type and thickness. Ideal for high-resolution
measurements on thin plastics and metals.
PosiTector UTG probes are available for a
variety of wall thickness applications:
Probes

4
PosiTector UTG probes transmit an ultrasonic pulse into the
material to be measured. This pulse travels through the material
towards the other side. When it encounters an interface such as air
(back wall) or another material, the pulse is reflected back to the
probe. The time required for the pulse to propagate through the
material is measured by the gage, represented as t1 and t2 below.
Single-echo PosiTector UTG probes (and PosiTector UTG M and
UTG P probes in single-echo mode) determine wall thickness by
measuring t1 (uncoated) or t2 (coated), dividing it by two and then
multiplying by the velocity of sound for that material (steel). See
Figure 1.
For uncoated materials t1relates directly to material thickness.
When a material is coated the propagation time is increased and
is shown above as t2.
Coatings such as paint have a slower velocity of sound than that
of metal. Thus the single-echo technique will produce a thickness
result greater than the actual combined coating+metal thickness.
Ultrasonic Thickness Probes –
Theory of Operation
>
Figure 1
Probe
Probe
t1
t1
t2
t2
Steel
Steel
Coating

5
In the figure above, multiple-echo mode measures only the time
between echoes. Regardless of whether the steel is coated or not,
all times between echoes are the same. In multiple-echo mode the
gage determines thickness by measuring t1+t2+t3, dividing it by
six and then multiplying by the velocity of sound for that material.
The resultant thickness calculation made by the instrument is
therefore an accurate measurement of the steel thickness only,
disregarding the coating thickness.
PosiTector UTG P Precision probes automatically switch
between multiple echo and single echo operation depending upon
the type and thickness of the material being measured.
The velocity of sound is expressed in inches per microsecond or
meters per second. It is different for all materials. For example,
sound travels through steel faster (~0.233 in/µs) than it travels
through plastic (~0.086 in/µs).
1. Remove rubber cap from probe.
Couplant (glycol gel - included) must
be applied to the surface to be tested to
eliminate air gaps between the wear face
and the surface. A single drop of couplant is
sufficient when taking a spot measurement.
The PosiTector UTG M and UTG P in multiple-echo mode
determine thickness by measuring the time between at least three
consecutive back wall echoes.
How to Measure
1
t2
t3
t
Figure 2
Probe
Probe
Steel
Coating
1
t2
t3
t

When the probe senses echoed ultrasound, a coupled symbol
will appear and thickness values will be displayed. While the
probe is coupled, the PosiTector UTG continually updates the
display. The Gage will emit a “tick” sound every time the probe
takes a measurement. The Reading Tick option can be disabled
in the Setup menu (see pg. 11).
3. When the probe is removed from the surface, the last
measurement will remain on the display.
Occasionally, excess couplant will remain on the probe when the
probe is lifted from the surface. This may cause the PosiTector
UTG to display a final measurement value different from those
observed when the probe was on the surface.
Discard this value using the button and repeat the
measurement.
6
Surface Conditions
Ultrasonic measurements are affected by the condition,
roughness, and contour of the surface to be tested.
Measurement results may vary on coarse surfaces. Where
possible, it is recommended to seat the transducer on a smooth
flat surface that is parallel to the opposite side of the material.
On rough surfaces, the use of a generous amount of couplant
minimizes the surface effects and serves to protect the transducer
from wear, particularly when dragging the probe across a surface.
2. Place the probe flat on the surface. Use moderate pressure to
press against the top of the probe with a thumb or index
finger when measuring with cabled probes.
On smooth, uncoated metal surfaces PosiTector UTG M
and UTG P probes (in multiple-echo mode) may occasionally be
unable to give a measurement result even when the "coupled"
symbol appears. Use additional couplant and lighter pressure on
the probe when measuring.
Alternatively, laying a plastic shim on the surface with couplant
applied to both sides to simulate a painted surface will help
produce a steel-only thickness measurement (multiple-echo
NOTE:

7
Calibration, Verification and Adjustment
Three steps ensure best accuracy…
1. Calibration - typically performed by the manufacturer or a
qualified lab. All probes include a Certificate of Calibration.
2. Verification of Accuracy - as performed by the user on
known reference standards such as calibration step blocks.
3. Adjustment - to a known thickness or sound velocity for the
material to be measured.
Calibration
Calibration is the controlled and documented process of measuring
traceable calibration standards and verifying that the results are
within the stated accuracy of the Gage. Calibrations are typically
performed by the Gage manufacturer or by a certified calibration
laboratory in a controlled environment using a documented process.
Verification
Gage accuracy can and should be verified using known reference
standards of the material to be tested.
Verification is an accuracy check performed by the user using
known reference standards. A successful verification requires the
Gage to read within the combined accuracy of the Gage and the
reference standards.
Adjustment
Adjustment, or Calibration Adjustment is the act of aligning the
Gage's thickness readings to match that of a known reference
sample. See Calibration Adjustment pg. 8.
mode). Switching the Gage to single-echo SE Mode (see pg. 11)
will also help produce a steel-only thickness measurement
(PosiTector UTG M only).

8
Cal Settings Menu
The PosiTector UTG is factory calibrated. In order for it to take
accurate thickness measurements of a particular material it must
be set to the correct sound velocity for that material. Be aware that
material composition (and thus its sound velocity) can vary from
stated tables and even between lots from a manufacturer.
Adjustment to a sample of known thickness of the material to be
measured ensures that the Gage is adjusted as close as possible
to the sound velocity of that specific material. Samples should be
flat, smooth and as thick as the maximum expected thickness of
the piece to be tested. The symbol disappears whenever a
Calibration Adjustment is made to the Gage.
Zero
PosiTector UTG probes must be “zeroed” after a reset and
periodically during use. The Zero process compensates for probe
wear and temperature. To maintain the best accuracy, perform a
Zero when the ambient temperature changes.
PosiTector UTG C, UTG CA, UTG CX,
UTG CLF and UTG M probes:
1. Make sure the Gage is ON and the probe is wiped clean.
2. Apply a single drop of couplant onto the included zero block
(PosiTector UTG CA only) or built-in zero plate located on
the underside of the probe connector. DO NOT apply couplant
directly onto the probe face.
3. Open the Gage menu, navigate to Cal Settings, select
the Zero menu option, and follow the on-screen prompts.
4. When complete, the Gage will double-beep and display “----”.
PosiTector UTG P probe only:
1. Make sure the Gage is ON and the probe is wiped clean.
2. Hold the probe in the air away from all objects.
3. Open the Gage menu, navigate to Cal Settings, select
the Zero menu option, and follow the on-screen prompts.
4. When complete, the Gage will double-beep and display “----”.
Calibration Adjustment
0

9
Cal Lock
The most common method of adjustment is to measure a sample
of known thickness. Select a reference standard of material as
close as possible in composition to the intended application. For
best results, the thickness of the reference standard should be
equal to or slightly greater than the thickness of the part to be
measured.
Material
If a known thickness of the material is not available, but the
material is known, this quick adjustment allows the user to load
one of several preprogrammed material velocities.
Velocity
If the sound velocity for the test material is known, the Gage
can be adjusted to that specific sound velocity.
2 Pt Adjust
A 2-Point adjustment allows for greater accuracy while
simultaneously adjusting probe Zero. Select two reference
standards as close as possible in composition to the intended
application. For best results, the thickness of the thicker reference
standard should be equal to, or slightly greater than the thickest
part to be measured. The thickness of the thinner reference
standard should be equal to, or slightly less than the thinnest part
to be measured.
When checked, the icon appears and the current Cal Settings
are “locked” to prevent further user adjustments.
Thickness
C
The PosiTector UTG allows four simple adjustment choices. All
four methods are based on the simple premise of adjusting the
sound velocity.

10
Date, Time and WiFi settings are not affected by either Reset.
Setup Menu
NOTE:
Reset (menu reset) restores factory settings and returns the
Gage to a known condition. The following occurs:
- All batches, stored measurements, batch names and screen
captures are erased.
- All calibration adjustments are cleared and returned to the
Gage’s factory calibration settings.
- Menu settings are returned to the following:
Memory = OFF
Statistics = OFF
Hi Lo Alarm = OFF
Min Scan = OFF
Reading Tick = ON
Auto Dim = ON
Converts the display from millimeters to inch and vice versa.
A Scan = OFF
B Scan = OFF
Cal Lock = OFF
SE Mode = OFF
USB Stream = OFF
Display = None
SmartCouple = OFF
Bluetooth & Stream = OFF
iFi & Access Point = OFF
USB Keyboard = OFF
BLE Keyboard = OFF
Perform a more thorough Hard Reset as follows:
1. Power down the Gage and wait 5 seconds.
2. Simultaneously press and hold the and buttons until the
Reset symbol appears.
This returns the Gage to a known, “out-of-the-box” condition. It
performs the same function as a menu Reset with the addition of:
- Bluetooth Pairing info is cleared.
- Menu settings are returned to the following:
Units = Millimeter
Touch = ON
Flip Lock = OFF
Auto Sync .net = ON
Sound = Medium
Battery Type = Alkaline
Language = English
Backlight = Normal
Bluetooth Smart = OFF
USB Drive = ON
Reset
Units

11
(Advanced models only)
A Scan
Displays a live chart of measured thicknesses,
representing a cross-sectional profile of the
test material.
SmartCouple
When selected, the probe, once coupled, will remain coupled
until the button is pressed. Eliminates unintentional decoupling.
Displays a chart with the travel distance of
the ultrasonic pulse on the x axis and the
recieved pulse amplidude on the y axis .
PosiTector UTG M and PosiTector UTG
Pprobes provide two cursors (vertical
green lines) which allow the user to
measure the difference between echoes
shown in the graphic display.
Coupled Smart Coupled
(Advanced models only)
B Scan
SE Mode (PosiTector UTG M multiple-echo probe only)
Switches from multiple-echo to single-echo mode:
- To increase the measurement range
- To obtain thickness measurements in circumstances where
multiple-echo can not
Reading Tick
When selected (default), the Gage will emit a “tick” sound
every time the probe takes a measurement.
Min Scan
Normally, the PosiTector UTG continuously takes spot
measurements while in contact with a surface. When the probe is
lifted, the last reading will remain on the display. However, it is
sometimes necessary to examine a larger region to locate the
thinnest point. When Min Scan is selected, the PosiTector UTG
will take continuous readings and record min/max thicknesses
when the probe is lifted from the surface – ideal for quick
inspection over a large area.

12
Adjusts the volume of built-in speaker (Off, Low, Medium, High).
Sound
Disables the Auto Rotate feature by locking the display in its
current orientation.
Flip Lock
Allows the touch screen functionality to be disabled. All gage
functions can also be controlled using the navigation buttons.
Touch
All measurements are date and time stamped (24-hour format)
when stored into memory. It is therefore important to set the
correct date and time. Use the and buttons to select a
value, and the and buttons to adjust it. The current date
and time setting can also be viewed at the top of the main menu.
Set Clock
Selects the type of batteries used in the Gage from a choice of
“Alkaline”, “Lithium” or “NiMH” (nickel-metal hydride rechargeable).
The battery state indicator symbol is calibrated for the selected
battery type. No damage will occur if the battery type used in the
Gage does not match the selected battery type.
Battery Type
Statistics Mode
HiLo Alarm
Allows the Gage to visibly and audibly alert the user when
measurements exceed user-specified limits.
–Average
–Maximum Value
–Standard Deviation
–Minimum Value
Statistics
X
X
A statistical summary will appear on the display. Remove the last
measurement by pressing the button. Press to clear statistics.

13
Memory Management
Advanced model store 250,000 readings in up to1,000
batches. “New Batch”closes any currently opened batch and
creates a new batch name using the lowest available number.
New batch names are date-stamped when they are created.
The PosiTector UTG has internal memory storage for recording
measurement data. Stored measurements can be reviewed on-
screen or accessed via computers, tablets and smart phones. All
stored measurements are date and time-stamped. The symbol
appears when the Gage is set to store measurement data.
Standard model store up to 1,000 readings in one batch.
Screen Capture
Press both and buttons simultaneously to save an image of
the current display. The last 100 screen captures are stored in
memory and can be accessed when connected to a computer
(see PosiSoft USB Drive below).
Create a new batch
(Advanced only)
Scroll through display
modes (Advanced only)
Delete last reading
Restore brightness
after dimming
Access the Menu
Accessing Stored Measurement Data
DeFelsko offers the following free solutions for viewing, analyzing
and reporting data:
PosiSoft USB Drive - Connect the Gage to a PC/Mac using the
supplied USB-C cable. View and print readings and graphs using
universal PC/Mac web browsers or file explorers. No software or
internet connection required.
PosiSoft Desktop - Powerful desktop software (PC/Mac) for
downloading, viewing, printing and storing measurement data.
Includes a customizable, templated PDF Report Generator. No
internet connection required.

14
Connect Menu
Allows connection to your local wireless network or mobile
hot spot. Ideal for using your network’s internet connection
for synchronizing stored measurements with PosiSoft.net.
See www.defelsko.com/wifi
iFi (Advanced models only)
PosiSoft.net - Web-based application offering secure, centralized
storage of measurement data. Access your data from any web-
connected device.
PosiTector App - (Advanced models only) App for compatible iOS
and Android smart devices. Permits users to create, save and
share professional PDF reports. Add images and notes using the
smart device’s camera and keyboard.
For more information on our PosiSoft solutions, see:
www.defelsko.com/posisoft
When USB Drive is enabled , the PosiTector uses a USB
mass storage device class which provides users with a simple
interface to retrieve stored data in a manner similar to USB flash
drives and digital cameras. USB Drive is also required to import
stored measurements into PosiSoft Desktop software (pg. 13).
USB
While connected, power is supplied through the included
USB-C cable. The batteries are not used and the body will not
automatically power down.
NOTE:
When enabled and connected to a computer, the PosiTector will
be recognized as a Keyboard. Readings are sent to the computer
as they are taken, emulating keystrokes, followed by a carriage
return.
Keyboard (Advanced models only)

15
The above iFi and USB menus contain a Sync .net Now option.
When selected, the Gage immediately synchronizes stored
measurement data via its respective communication method
(internet connection required).
Alternatively, select Auto Sync .net from within the USB connect
menu to automatically synchronize upon connection to a PC.
Additional measurements added to memory while connected are
synchronized only when the USB cable is disconnected and
reconnected, or when the Sync .net Now option is selected. WiFi
connected gages automatically attempt synchronization upon
power up.
Sync .net Now
PosiSoft Desktop is required when using USB to
synchronize measurements with PosiSoft.net.
NOTE:
Stream
For more information on USB eyboard and
Streaming visit: defelsko.com/usb/stream/
NOTE:
(Advanced models only)
Stream individual readings to a USB connected computer via a
serial protocol. Ideal for use with serial compatible SPC data
collection software.
Allows communication with a smart device running the
PosiTector App (pg. 14) via auto-pairing Bluetooth Smart (BLE)
wireless technology.
Bluetooth Smart
Allows individual readings to be sent to a computer, printer or
compatible device as they are taken using Bluetooth wireless
technology. See www.defelsko.com/bluetooth
Bluetooth (Advanced models only)
(Advanced models only)

16
The Gage will perform a Hard Reset after an
update. (see pg. 10)
Updates
Determines if a software update is available for your Gage.
See www.defelsko.com/update
WARNING:
BLE Keyboard
When enabled and connected to a computer, the PosiTector will
be recognized as a wireless Keyboard. Readings are sent to the
computer as they are taken, emulating keystrokes, followed by a
carriage return.
(Advanced models only)
Sync Batches
Select batches to flag them for synchronization to the PosiTector
App. Sync Batches is useful when connecting a new device to a
gage with pre-existing batches, since only batches created while
Bluetooth Smart is enabled are automatically selected.
Selected batches are synchronized when the next reading is
taken in a batch flagged for synchronization, or when the Sync
Batches option is selected at the bottom of the list of selected
batches.
Send Batches
Transfers selected batches to the PosiTector App. Send Batches
is useful when switching between devices, as only readings and
batches that have yet to be synchronized with any smart device
are synchronized automatically.
The Send Batches option is visible in the menu when the Gage
is connected to a smart device running the PosiTector App.
If Bluetooth Smart is disabled or disconnected, data
from batches selected in the Sync Batches menu are held in a
queue until communication with the PosiTector App is re-
established.
NOTE:

Limited arranty, Sole Remedy
and Limited Liability
www.defelsko.com
© 2020 DeFelsko Corporation USA
All Rights Reserved
This manual is copyrighted with all rights reserved and may not be reproduced or transmitted,
in whole or part, by any means, without written permission from DeFelsko Corporation.
DeFelsko, PosiSoft, and PosiTector are trademarks of DeFelsko Corporation registered in
the U.S. and in other countries. Other brand or product names are trademarks or registered
trademarks of their respective holders.
Every effort has been made to ensure that the information in this manual is accurate.
DeFelsko is not responsible for printing or clerical errors.
Before returning the Gage for service…
1. Install new or newly recharged batteries in the proper
alignment as shown within battery compartment.
2. Examine the probe tip for dirt or damage.
3. Perform a Hard Reset (pg. 10) and a Zero (pg. 8).
4. If issue is not resolved, Update (pg. 16) your PosiTector
gage body and re-attempt measurements.
IMPORTANT:
If these steps do not resolve the issue and the Gage must be
returned for service, please follow the instructions provided at
www.defelsko.com/service.
DeFelsko's sole warranty, remedy, and liability are the express
limited warranty, remedy, and limited liability that are set forth on
its website: www.defelsko.com/terms
Returning for Service

Manual de Instrucciones
los modelos
Advanced
Ultrasonic Thickness Gage

1
Introducción
Introducción
El PosiTector UTG es un medidor de espesores ultrasónico
portátil que utiliza un principio no destructivo impulso/eco para
medir el espesor de paredes de una amplia variedad de
materiales. Está formado por un cuerpo (Standard o Advanced) y
una sonda.
1. Retire el tapón protector de goma de la sonda.
2. Encienda el edidor pulsando el botón centra .
3. Ajuste a cero la sonda (pág. 8).
4. Verifique la precisión y ajuste si es necesario (pág. 7).
5. ida la pieza (pág. 5).
Presione el boton para encender el instrumento. Para conser-
var la vida de la bateria, el instrumento entrará en reposo
automáticamente tras 5 minutos de inactividad. Cuando se
encuentra dentro del modo de reposo, el instrumento se reactiva
significativamente más rápido. El instrumento se apagará comple-
tamente después de 4 horas de inactividad. Alternativamente,
seleccione la opcion “Apagar” en el menu principal. Todas las
configuraciones se mantienen.
Inicio rápido
Menú Operación
Para ingresar al menu principal, encienda el medidor, después
presione el botón de navegación . Puede utilizar tanto el
teclado del tablero como la pantalla tactil para navegar en el
menú. Si lo desea, la funcionalidad de la pantalla táctil puede
ser deshabilitada desde el menu “Configurar” (vea Touch, pág.
12).
Seleccione la opcion del menú tocando el título o utilice las
teclas y para señalar la opción del menu de su elección
finalmente presione el para validar la selección.
Cuando el contenido del menú necesite desplegarse en más de
una pantalla, se mostrará debajo del título del menú el número
depágina. Podrá navegar entre las páginas del menú usando las