DeFelsko PosiTector UTG User manual

Quick Guide . 3.2
Ultrasonic Thickness Gage
Advanced model

Introduction
1. Remove the protective rubber cap from the probe.
2. Power-up Gage by pressing the center navigation button.
3. Zero the probe (see pg. 6)
4. Select the correct velocity of sound (see pg. 7)
5. Measure the part (see pg. 3)
Quick tart
Current Measurement
Currently
selected
material
Unit of Measurement
The Coupled Symbol appears when the probe
is ultrasonically connected with a surface.
inch
Steel
Battery
con
Measurement Mode
currently set to multiple-
echo (UTGM probe only)
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. t consists of a body
(Standard or Advanced) and probe.
This Quick Guide summarizes the basic functions of the instrument.
Download the full instruction manual at: www.defelsko.com/manuals
The PosiTector UTG powers-up when the center navigation button
is pressed. To preserve battery life, the Gage powers down after
approximately 5 minutes of no activity. All settings are retained.
To navigate, use the Up and Down buttons to scroll vertically and
to ELECT.
Menu Operation
Gage functions are menu controlled. To access the Menu, power-
up the gage, then press the center navigation button.
Press the (+) button to switch
pages in a multipage menu.
Press the (
-
)button to return to
the previous menu or page.
Select Exit to exit from any menu.
Typical Display
0.200
Previous Page
(Exit) Up Next Page
Access the Menu
(Center/Select)
Down

2
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.
t is not necessary to power-down the Gage when
switching probes.
Probes
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 propogate through the
material is measured by the Gage, represented as
t1 and t2 below.
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.
>
Figure 1
Probe
Probe
t1
t1
t2
t2
teel
teel
Coating
The PosiTector gage body accepts a wide variety of probe
types including magnetic, eddy-current and ultrasonic coating
thickness, surface profile, environmental, shore hardness and
ultrasonic wall thickness probes. See www.defelsko.com/probes
PosiTector UTGC and UTGM (in single-echo mode) probes
determine 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.

3
How to Measure
The PosiTector UTGM in multiple-echo mode determines
thickness by measuring the time between at least three
consecutive back wall echoes.
1
t2
t3
t
Figure 2
n 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. n multiple-echo
mode the Gage determines thickness by measuring
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.
The velocity of sound is expressed in inches per microsecond or
meters per second. t 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.
2. Place the probe flat on the surface. Use moderate pressure to
press against the top of the probe with the thumb or index finger.
Probe
Probe
teel
Coating
1
t2
t3
t
t1+t2+t3,

4
urface 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.
On smooth, uncoated metal surfaces the Gage (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 mode).
Switching the Gage to single-echo E mode (see pg. 9) will also
help produce a steel-only thickness measurement.
UTG M Probes:
When the probe senses echoed ultrasound, a coupled symbol
will appear on the display and thickness values will be
displayed. While the probe is coupled, the PosiTector UTG
continually updates the display.
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 and repeat the measurement.

5
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
Adjus men , or Calibra ion Adjus men is the act of aligning the
Gage's thickness readings to match that of a known reference
sample. See Calibration Adjustment pg. 6.

Cal ettings Menu
The PosiTector UTG is factory calibrated. But 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 PosiTector UTG allows four simple adjustment choices.
All four methods are based on the simple premise of adjusting
the sound velocity. The first three adjustment methods make
1-point calibration adjustments to optimize the linearity of the
PosiTector UTG over small ranges. The fourth method makes
a 2-point calibration adjustment to allow for greater accuracy
over a large range.
Zero
PosiTector UTG probes can be "zeroed" to compensate for
temperature and wear. This action is not required when operating
in multiple-echo mode (UTG M probes only) except when the
instrument is new and after a Reset (pg. 8). However it ensures
best accuracy when operating in SE (single-echo) mode.
Therefore it is a good idea to "Zero" the probe before each work
shift and when the temperature of the part changes. During
zeroing, it does not matter what the current velocity setting is.
1. Make sure the Gage is ON and the probe is wiped clean.
2. Apply a single drop of couplant onto the zero plate located on
the underside of the probe connector. DO NOT apply couplant
directly onto the probe face.
3. Select the Zero menu option and follow the on-screen prompts.
Calibration Adjustment
6

7
Cal Lock
The most common method of adjustment is to measure a sam-
ple 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
f 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
f 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 as close as possible to the
lower end of the expected measurement range.
When checked, the icon appears and the current Cal settings
are “locked” to prevent further user adjustments.
Thickness
C

Min can
Normally, the PosiTector UTG takes a single spot measurement
at a rate of 6 readings per second while in contact with a surface.
When the probe is lifted, the last reading will remain on the display.
t is sometimes necessary to examine a larger region to locate the
thinnest point. When
Min can is selected, the PosiTector UTG
will measure at a rate of20 readings per second and display
min/max values.
-Date,Time and WiFi settings are not affected by either Reset.
etup Menu
NOTE:
8
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
tatistics = OFF
Hi Lo Alarm = OFF
Min can = OFF
Auto Dim = ON
Converts the display from millimeters to inch and vice versa.
A can = OFF
B can = OFF
Cal Lock = OFF
E Mode = OFF
Display = None
martCouple = OFF
Bluetooth & tream = OFF
WiFi & Access Point = 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 center
buttons until the Reset symbol appears.
This returns the Gage to a known, “out-of-the-box” condition.
t 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
Flip Display = Normal
Auto ync .net = ON
ound = ON
Language = English
Battery Type = Alkaline
Backlight = Normal
Bluetooth mart = OFF
U B Drive = ON
Reset
Units

tatistics Mode
HiLo Alarm
Allows the Gage to visibly and audibly alert the user when
measurements exceed user-specified limits.
(Advanced models only)
A can
A display in which a cross sectional profile
of the test material is represented.
martCouple
When selected, the probe, once coupled, will remain coupled
until the (+)button is pressed. Eliminates unintentional decoupling.
A display in which the received pulse
amplitude is represented along the y axis
and the travel distance of the ultrasonic
pulse is represented along the x axis.
E Mode (UTGM mul iple-echo probes only)
Switches from multiple-echo to single-echo mode:
- To detect pits and flaws
- To increase the measurement range
- To obtain thickness measurements in
circumstances where multiple-echo can not
9
Coupled Smart Coupled
A statistical summary will appear on the display. Remove the last
measurement by pressing the (
-
)button.Press (+)to clear statistics.
–Average
–Maximum Value
–Standard Deviation
–Minimum Value
tatistics
(Advanced models only)
B can
Selects the type of batteries used in the Gage from a choice of
“Alkaline”, “Lithium” or “NiMH” (nickel-metal hydride rechargeable).
f “NiMH” is selected, the Gage will trickle charge the batteries
while connected via USB to a PC or optional AC power supply
(USBAC). 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
X
X

10
Memory Management
Advanced models store 100,000 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 models store up to 250 readings in one batch.
creen Capture
Press both the ( - ) and (+)buttons at any time to capture and save
an image copy of the current display. The last 10 screen captures
are stored in memory and can be accessed when connected to a
computer (see PosiSoft USB Drive, pg. 10).
Accessing tored Measurement Data
DeFelsko offers the following free solutions for viewing, analyzing
and reporting data:
Posi oft U B Drive - Connect the Gage to a PC/Mac using the
supplied USB cable. View and print readings and graphs using
universal PC/Mac web browsers or file explorers. No software or
internet connection required. U B Drive must be selected in the
Gage’s “Connect > U B” menu (pg. 11).
Posi oft Desktop - Powerful desktop software (PC/Mac) for
downloading, viewing, printing and storing measurement data.
ncludes a customizable, templated PDF Report Generator.
No internet connection required.
Posi oft.net - Web-based application offering secure, centralized
storage of measurement data. Access your data from any web-
connected device.
Create a new batch
(Advanced only)
Restore brightness
after dimming
Scroll through display
modes (Advanced only)
Delete last reading
Access the Menu

11
The above WiFi,U B and Bluetooth menus contain a ync .net
Now option. When selected, the Gage immediately synchronizes
stored measurement data via its respective communication
method (internet connection required). Alternatively, select Auto
ync .net from within the U B connect menu to automatically
synchroniz e upon connection to a PC.
ync .net Now
Connect Menu
When U B Drive is checked , the PosiTector gage 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, digital cameras and digital audio players.
U B Drive is also required to import stored measurements into
PosiSoft Desktop software (pg. 10).
When connected, power is supplied through the USB
cable. The batteries are not used and the body will not automatically
power down. f rechargeable (NiMH) batteries are installed, the
gage will trickle charge the batteries.
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
Allows connection to your local wireless network or mobile
hot spot. deal for using your network’s internet connection for
synchronizing stored measurements with PosiSoft.net (pg.10).
See www.defelsko.com/wifi
WiFi (Advanced models only)
(Advanced models only)
NOTE:
U B
PosiTector App - (Advanced models only, serial numbers 784000+)
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

12
ync Batches
Select batches to flag them for synchronization to the
PosiTector App. New batches created while Bluetooth mart
is enabled are automatically selected.
With Bluetooth mart enabled, select ync Batches to transfer
selected batches to the PosiTector App. This is useful when
switching between smart devices, as only readings and batches
that have yet to be synchronized with any smart device are
synchronized automatically.
The Gage will perform a Hard Reset (pg. 8) after
an update. All stored measurements will be erased from memory.
Updates
Determine if a software update is available for your Gage.
See www.defelsko.com/update
WARN NG:
When Enabled , allows communication with a smart device
running the PosiTector App (pg. 11) via auto-pairing Bluetooth
mart (BLE) wireless technology.
Bluetooth mart (Advanced models only,
serial numbers 784000 and grea er)
end Batches
Transfers selected batches to the PosiTector App
(useful when switching between devices).
The end Batches option is visible in the menu when the
Gage is connected to a smart device running the PosiTector App.
f Bluetooth mart is disabled, data from batches
selected in the ync Batches menu are held in a queue until
communication with the PosiTector App is re-established.
NOTE:
Posi oft Desktop is required when using a U B
connection to synchronize measurements with PosiSoft.net.
NOTE:
Additional measurements added to memory while connected
are synchronized only when the USB cable is disconnected and
reconnected, or when the ync .net Now option is selected.
WiFi connected gages automatically attempt synchronization
upon power-up .

13
Limited Warranty, ole Remedy
and Limited Liability
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
www.defelsko.com
© 2017 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.
Returning for ervice
Before returning the Gage for service…
1. nstall 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. 8) and a Zero (pg. 6).
4. f issue is not resolved, Update (pg. 12) your PosiTector
gage body and re-attempt measurements.
IMPORTANT:
f you must return the Gage for service, please fill out and
include the Service Form located at www.defelsko.com/support
with the Gage. Be sure to also include the probe, your company
name, company contact, telephone number and fax number or
email address.

Guia rápida v. 3.0
Ultrasonic Thickness Gage
los modelos Advanced

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 (UTGC o UTGM, consulte pág. 2).
Esta guía rápida resume las funciones básicas del equipo.
Descargue el manual de instrucciones en:
www.defelsko.com/manuals
El PosiTector UTG se enciende al pulsar el botón central .
Para ahorrar energía, el equipo se apagará tras unos 5 minutos
de inactividad. Se conservarán todas las configuraciones.
1. Retire el tapón protector de goma de la sonda.
2. Encienda el edidor pulsando el botón central .
3. Ajuste a cero la sonda (consulte pág. 6)
4. Seleccione la velocidad correcta de sonido (consulte pág. 7)
5. ida la pieza (consulte pág. 3)
Inicio rápido
Inicio rápido
Pantalla típica
edida
actual
Selección
de material
actual
Unidad de
medida
El símbolo de acoplamiento aparecerá
cuando la sonda esté correctamente colo-
cada y sea posible la medición por ultra-
sonido.
pulgadas
Acero
Icono
batería
odo de medición
actualmente con-
figurado como mul-
tieco
(s lo sonda UTGM)
1

Para separar la sonda del cuerpo, apague el equipo y tire del
conector de plástico de la sonda en el plano horizontal (en la
dirección indicada por la flecha), separándola del cuerpo.
Invierta los pasos para conectar una nueva sonda.
Cuando se enciende, el PosiTector determina automáticamente
el tipo de sonda conectada y realiza una verificación.
Sondes
Sondes
Las sondas PosiTector UTG transmiten un impulso ultrasónico al
material que va a medirse. Este impulso viaja a través del material
hacia su otra cara. Cuando encuentra una superficie como el aire
(cara posterior) u otro material, el impulso se refleja hacia la
sonda. La sonda mide el tiempo que requiere la propagación en el
material, representado por t1y t2más abajo.
Las sondas PosiTector UTGC y UTGM (en modo eco simple)
determinan el espesor midiendo t1(sin revestimiento) o t2(con
revestimiento), dividiéndolo por dos y multiplicándolo por la propa-
gación del sonido en ese material (acero). Consulte la figura 1.
Para materiales no revestidos, t1está relacionado directamente
con el espesor del material. Si un material está revestido, el
tiempo de propagación se incrementa como se muestra en t2.
Los revestimientos como la pintura tienen una menor propa-
gación del sonido que el metal. Sin embargo la técnica del eco
simple produce un resultado de espesor mayor que el espesor
real del combinado revestimiento+metal.
acero
Revestimiento
acero
2
t>1
t
Figura 1
2
t
1
t
Sonda
Sonda
2

Cómo medir
Cómo medir
El PosiTector UTGME en modo eco múltiple determina el
espesor midiendo el tiempo entre al menos tres caras posteriores
consecutivas.
acero
Sonda
1
t2
t3
t
1
t2
t3
t
Revestimento
Figura 2
Sonda
En la figura anterior, el modo eco múltiple solo mide el tiempo
entre ecos. En función de que el acero esté revestido o no, el
tiempo entre ecos es siempre el mismo. En modo eco múltiple, el
medidor determina el espesor midiendo t1+t2+t3, dividiéndolo por
seis y multiplicándolo por la propagación del sonido de este mate-
rial. El cálculo del espesor resultante que realiza el equipo es por
lo tanto una medición precisa del espesor del acero solo, sin tener
en cuenta el espesor del revestimiento.
La propagación del sonido aparece expresada en pulgadas por
microsegundo o metros por segundo. Es diferente para cada
material. Por ejemplo, el sonido viaja a través del acero más rápi-
do (~0.233 in/µs) que a través del plástico (~0.086 in/µs).
1. Retire el tapón de goma de la sonda. El acoplante (gel gli-
col incluido) deberá aplicarse a la superficie que se desea
medir para eliminar capas de aire entre la cara sufridera y la
superficie. Una sola gota de acoplante es suficiente cuando
se realiza una medición in situ.
2. Ponga la sonda perpendicular sobre la superficie que se
va a medir. Presione ligeramente sobre la parte superior de
la sonda con el dedo pulgar o el índice.
3

Condiciones de la superficie
Condiciones de la superficie
Las mediciones ultrasónicas están sujetas a la aspereza y
contorno de la superficie que va a medirse.
Los resultados podrían variar en superficies gruesas. Cuando
sea posible, se recomienda asentar el transductor sobre una
superficie lisa y plana paralela a la cara opuesta del material.
En superficies ásperas, el empleo de una cantidad generosa de
acoplante minimizará sus efectos y permitirá evitar el desgaste
del transductor, de manera especial cuando se arrastre la sonda
sobre la superficie.
En superficies metálicas lisas y sin
revestimiento, el medidor (en modo eco múltiple) podría no ser
capaz de dar un resultado de medición incluso mostrando el
símbolo "acoplado". Utilice acoplante adicional y presione menos
en la sonda cuando realice una medición. De manera alternativa,
si coloca un laminilla de plástico con gel acoplante sobre ambas
caras de la superficie a medir puede simular una superficie
pintada para obtener una medición en un espesor de sólo acero
(sin salir del modo eco múltiple). También puede el cambiar el
medidor a modo de eco simple modo SE (consulte pág. 9) para
facilitar una medición de espesor de acero sin recubrimiento.
Sondas UTG :
Cuando la sonda detecta los ultrasonidos del eco, un símbolo de
acoplado aparecerá en la pantalla y los valores del espesor
se mostrarán. ientras la sonda esté acoplada, el PosiTector
UTG actualizará de manera constante la pantalla.
3. Cuando se retire la sonda de la superficie, la última medición se
conservará en la pantalla.
De manera ocasional, el exceso de acoplante permanecerá en la
sonda cuando ésta se retire de la superficie. Esto podría ocasionar
que el PosiTector UTG mostrara una medición final diferente de
la observada cuando la sonda estaba sobre la superficie. Descarte
este valor y repita la medición.
4

Calibración, verificación y ajuste
Calibración, verificación y ajuste
Para garantizar la mayor exactitud, siga estos tres pasos...
1.Calibración - generalmente realizada por el fabricante o por un
laboratorio acreditado. Todas las sondas incluyen un Certificado
de Calibración.
2. erificación de la precisión - se realiza por el usuario solo que
usa bloques de calibración tipo escalera (step block) en vez de
patrones de referencia.
3.Adjuste - puede ajustar el factor de velocidad propagación del
sonido conocido de acuerdo al espesor o al material que va a
medirse.
Calibración
La calibración es el proceso controlado y documentado de
medición sobre patrones de calibración trazables y la verificación
de los resultados para confirmar que estos se encuentran dentro
del nivel de precisión establecido del edidor. El proceso de
calibración generalmente lo realiza el fabricante del edidor o un
laboratorio de calibración certificado en un entorno controlado y
siguiendo un proceso documentado.
erificación
Es conveniente y necesario verificar la precisión del edidor
empleando patrones de referencia del material que se va a
comprobar.
El proceso de verificación es una comprobación de la exactitud
realizada por el usuario. Utiliza galgas patrón con espesores
conocidos. Una verificación exitosa implica que el resultado de la
medición se encuentre dentro del rango de precisión combinado
del medidor y del bloque patrón.
Adjuste
El Ajuste, o Ajuste de Calibraci n, consiste en alinear las lecturas
del edidor para emparejarlas con una muestra de referencia
conocida. Consulte Ajuste de Calibraci n, pág. 6.
5