Model PG70
Model PG70DL
Precision Gauge
Operating Instructions
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This product meets the Electromagnetic Compatibility Directi ve.
The product is Class A, Group 1 ISM equipment according to CISPR 11. Group ISM product: A product in which
there is intentionally generated and/or used conductively coupled radio-frequency energy which is necessary for
the internal functioning of the equipment itself.
Class A product is suitable for use in all es tablishments other tha n domestic and those directly connected to a
low voltage power supply network which supplies buildings used for domestic purposes.
Note: In the close presence of some radio transmitte rs, erroneous readings may be given. If this occurs tests
should be repeated at another location.
These operating instructions are available for download on our website www.elcometerndt.com.
The following trademark is a regis tered trademark of Elcometer Limited, Edge Lane , Manchester, M43 6BU.
United Kingdom:
Material Safety Data Sheet for the ul trasonic couplant supplied w ith the PG70DL & PG70 an d available as an
accessory, is available to download via our website:
Elcometer NDT Ultrasonic Couplant Material Safety Data Sheet :
www.elcometerndt.com/images/MSDS/elcometer_ultrasonic_couplant.pdf
All other trademarks acknowledged. © Elcometer Limited. 2011-2012. All rights reserved. No part of this
document may be reproduced, transmitt ed, transcribe d, sto red (in a retr ieval sy stem o r otherwis e) or t ransla ted
into any language, in any form or by any means (electronic, mechanical, magnetic, optical, manual or otherwise)
without the prior written permission of Elcometer Limited.
Doc.No. TMA-0499 Issue 02
Text with Cover No: 23226
Contents
1 About your gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 The keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Getting started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 The display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Setting up Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Measurement modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Taking readings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 Measurement - Recording your readings (PG70DL only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9 Transferring readings to a computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
11 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
12 Technical specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
13 Spares & Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
14 Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
15 Transducers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
16 Condition and preparation of surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
17 Application notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
18 Sound velocities of common materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
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Thank you for purchasing this Model PG70/PG70DL Precision Gauge. Welcome to Elcometer.
Elcometer are world leaders in the design, manufacture and supply of coatings inspection equipment. Our
products cover all aspects of coating inspection, from development through application to post application
inspection.
The Model PG70/PG70DL Precision Gauge are world beating products. With the purchase of this gauge
you now have access to the worldwide service and support network of Elcometer NDT. For more information
visit our website at www.elcometerndt.com.
1 ABOUT YOUR GAUGE
The Model PG70/PG70DL Precision Gauge are hand-held gauges for fast and accurate measurement of
the thickness of thin materials.
Your gauge is capable of measuring the thickness of various materials with great precision. The principal
advantage of ultrasonic measurement over traditional methods is that ultrasonic measurements can be
performed with access to only one side of the material being measured.
Your gauge is also capable of measuring the thickness of plastics.
There are two versions of the gauge:
• The Model PG70 is the basic model.
• The Model PG70DL model includes all the features of the Model PG70 model plus a data-logging
(memory) facility which allows readings to be stored in batches before being downloaded to a
computer.
This manual describes the operation of both models - Model PG70 and PG70DL.
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1.1 STANDARDS
Your gauge can be used in accordance with the following Standards and test methods; ASTM E 797 and
EN 15317.
1.2 WHAT THIS BOX CONTAINS
Model PG70 or PG70DL Gauge, Bottle of couplant, Battery (2 x), Carrying case, Test certificate, Operating
instructions, CD with data transfer and data collection software (DL version only), RS232 cable and USB to
Serial converter.
Note : The box does not include a transducer; these must be ordered separately. To order a transducer,
contact Elcometer NDT or your local Elcometer NDT supplier.
To maximise the benefits of your new Elcometer NDT Ultrasonic Thickness Gauge, please take
some time to read these Operating Instructions. Do not he sitate to contact Elcometer NDT or your
Elcometer NDT supplier if you have any questions
1.3 FEATURES OF THE GAUGE
CHO-TO-ECHO MODE: Allows measurement of coated materials without having to remove the coating.
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NTERFACE-TO-ECHO MODE: The gauge switches to this mode automatically when measuring thicker
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materials and plastic.
LAS MODE: For measuring the thickness of plastics.
P
CAN MODE: Identifies the minimum thickness over a large area while moving the transducer over the
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surface. While the transducer is in contact with the material being measured the smallest value is held in
memory and displayed when scanning is complete.
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ALARM: Allows the user to set a target so that an audible and visual alarm operates when taking
measurements. If the measurement falls below a pre-set nominal (target) value a red LED will light and the
beeper sounds. A green LED will light to indicate an acceptable thickness.
ATA OUTPUT: Allows the user to send data direct to a printer or PC.
D
ATA-LOGGING (PG70DL VERSION ONLY): Memory capacity of up to 1000 readings. Readings are stored in
D
up to 10 batches each containing up to 100 readings. Batches may be transferred to a PC using supplied
software.
1.4 PACKAGING
Your gauge is packed in a cardboard and foam package. Please ensure that this packaging is disposed of
in an environmentally sensitive manner. Please consult your Local Environmental Authority for further
guidance.
Elcometer 207
UltrasonicThickness Gauge
ALRM
DIFF
LRM
SEND
CAL
SCAN
SCAN
SENDCAL
INMMON
IN
MM
OFF
PRECISION GAUGE
PG70
DIFF
R
Elcometer 207
UltrasonicThickness Gauge
ALRM
DIFF
MODE
SEND
CAL
SCAN
SEND
CAL
INMMON
IN
MM
OFF
PRECISION GAUGE
PG70DL
MEM
CLR
R
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2 THE KEYPAD
MODEL PG70
Key Functions For more
Press to switch the gauge on or off.
When switching off, the gauge retains all of its settings.
If the gauge is idle for 5 minutes, it will switch itself off.
information see
Mode
PG70
PG70DL
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Press to adjust the features and settings of the gauge (alarm, scan, mode,
MODE
units, backlight, and beeper).
Press to switch SCAN mode on or off. page 15.
Press to adjust calibration. page 12.
IN
IN
Press to change units (metric/imperial)
MM
MM
a) Increases values on the display (press and hold to change values quickly). PG70
b) Switches between measurement modes (echo-echo, interface-echo or
auto).
c) Scrolls up through menu system PG70DL
PG70DL
PG70
PG70
PG70DL
PG70
PG70DL
PG70
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Key Functions For more
a) Decreases values on the display (press and hold to change values quickly). PG70
b) Switches the display backlight between three settings; on, off and auto. page 19. PG70
c) Press and hold during gauge switch on to toggle LOC mode on/off page 20. PG70
d Scrolls down through menu system
a) Press and hold during gauge switch on to toggle the audible beeper on or
off.
b) Press to toggle the alarm on or off, and to adjust the nominal thickness
value.
Press to toggle the DIFFERENTIAL mode on or off, and to adjust the nominal
thickness value.
Press to switch data logging (memory) on/off.
MEM
Press when data logger is switched on to clear the contents of an entire batch,
or an individual memory location.
The CLR key is also used to send an obstruct message (ObSt ) to an individual
CLR
memory location. The ObSt symbol would indicate that the user was unable to
take a reading at a particular location.
information see
page 17.
page 16.
Measurement Recording your
readings - see
page 22.
Measurement Recording your
readings - see
page 22.
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Mode
PG70
PG70DL
PG70
PG70
PG70
PG70DL
PG70DL
PG70DL
Key Functions For more
a) Press to send the displayed thickness measurement to an external storage
device via the RS232 port.
b) Press to select functions in the menu and save readings PG70
c) Press to send the displayed thickness measurement to an internal memory
location or an external storage device via the RS232 port.
c) Press to select data logging functions.
information see
page 26.
page 26. PG70DL
Measurement Recording your
readings - see
page 22.
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Mode
PG70
PG70DL
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3 GETTING STARTED
3.1 FITTING BATTERIES
Your gauge may be used with dry cell batteries or rechargeable batteries.
2 x LR6 (AA) alkaline batteries are supplied in the kit.
When the battery voltage is low the entire display will start to flash. When
this occurs the batteries should be replaced.
To fit or replace batteries:
1. Unscrew battery compartment cover.
2. Referring to battery polarity instructions on rear of gauge, insert
batteries into gauge ensuring correct polarity.
3. Replace battery compartment cover.
Remove the batteries from the gauge if it is to remain unused for a long
period of time. This will prevent damage to the gauge in the event of
malfunction of the batteries.
Note: Alkaline batteries must be disposed of carefully to avoid
environmental contamination. Please consult your local environmental
authority for information on disposal in your region.
Do not dispose of any batteries in fire.
3.2 CHOOSING THE TRANSDUCER
Information can be found on the Elcometer NDT Knowledge Centre on www.elcometerndt.com.
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Elcometer 207
UltrasonicThickness Gauge
Model PG70
ALRM
LRM
SEND
CAL
SENDCAL
IN
IN
MMONOFF
MM
PRECISION GAUGE
Battery
compartment
cover
DIFF
DIFF
SCAN
SCAN
R
3.3 FITTING THE TRANSDUCER
The transducer transmits and receives ultrasonic sound waves that the gauge uses
to calculate the thickness of the material being measured.
The transducer connects to the gauge via the attached cable, and single coaxial
connectors.
Transducers are supplied with two replaceable delay lines, 6.35 mm (1/4") and
12.7 mm (1/2"). The 12.7 mm (1/2") is suitable for most applications and measures
steel up to 25 mm. Generally, it should be used to measure thicker materials. It will
also dampen the signal of noisy materials, providing better accuracy.
The 6.35 mm (1/4") delay line provides more signal strength and may allow you to
measure tough-to-penetrate materials.
To change the delay line, unscrew the end of the transducer and apply couplant to
the connecting end of the delay line before screwing together.
3.4 SWITCHING ON/OFF
To switch on or off, press ON/OFF .
The gauge will switch off automatically after 5 minutes of inactivity.
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4 THE DISPLAY
Stability indicator (see below) Units (IN, MM, IN/µs, MM/s)
INMM/ s
Thickness value/Menu items
Stability indicator
One bar - no readings are being taken
Less than 5 bars - reading is unstable and may be inaccurate
More than 5 bars - reading is stable
Refer to page 21 and page 33 for information on how to achieve a stable measurement.
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µ
4.1 FRONT PANEL LIGHTS
Green light illuminates when:
• The alarm mode is active, and
• the measured thickness is greater than the alarm value.
Red light illuminates when:
• The alarm mode is active, and
• the measured thickness is less than the alarm value.
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5 SETTING UP GAUGE
As a delay line transducer should be used with these gauges, zeroing of the gauges is not necessary.
5.1 CALIBRATION
In order for the gauge to make accurate measurements, it must be set to the correct sound-velocity for the
material being measured.
Different types of material have different sound-velocities. For example, the velocity of sound through steel
is 5918 m/s (about 0.233 in/µs) and the velocity of sound through aluminium is 6350 m/s (about 0.248 in/µs).
Setting the calibration is crucial for the gauge to function and the procedure should be carried out after every
probe zero and when the material type is changed.
There are two methods of calibrating your gauge:
NOWN THICKNESS CALIBRATION: This is the simplest and most commonly used calibration procedure.
K
NOWN VELOCITY CALIBRATION: The sound-velocity of the material being measured is entered directly into
K
the gauge.
Note: Known thickness calibration must be performed on material with the paint or coating removed. Failure
to remove the paint or coating prior to calibration will result in a multi-material velocity calculation that may
be different from the actual material velocity intended to be measured.
5.1.1 Known thickness calibration
This procedure requires a sample piece of the material to be measured, the exact thickness of which is
known, having been measured by some other means e.g with a caliper or micrometer.
1. Apply couplant to the sample piece.
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2. Press the transducer against the sample piece, making sure that the transducer is flat against the
surface of the sample. The display should show some (probably incorrect) thickness value, and nearly
all the bars of the stability indicator should be illuminated.
3. Press CAL. The MM (or IN) symbol should begin flashing. Y ou may remove the transducer at this point
if you wish.
4. Use UP and DOWN to adjust the displayed thickness, until it matches the known thickness of the
sample piece.
5. Press CAL. The M/s (or IN/µs) symbols should begin flashing. The gauge is now displaying the soundvelocity value it has calculated.
6. Press CAL to exit the calibration mode.
The gauge is now ready to perform measurements.
5.1.2 Known velocity calibration
This procedure requires that the operator knows the sound-velocity of the material to be measured. A table
of common materials and their sound-velocities can be found in page 34.
1. Press ON/OFF to switch on the gauge.
2. Press CAL to enter calibration mode then press CAL again, so that the M/s (or IN/µs) symbols are
flashing.
3. Use UP and DOWN to adjust to the desired value, until it matches the sound-velocity of the material to
be measured.
4. Press CAL to exit the calibration mode.
The gauge is now ready to perform measurements.
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Note: At any time during the gauge calibration procedure (IN, MM, IN/µs, or M/s flashing in the display),
pressing the SCAN (PG70) or CLR (PG70DL) will restore the gauge to the factory default sound-velocity for
steel, 5918 m/s (0.233 in/µs).
Material composition (and thus, its sound-velocity) sometimes varies from batch to batch and from
manufacturer to manufacturer. Calibration to a sample of known thickness will ensure that the gauge is set
as closely as possible to the sound-velocity of the material to be measured.
6 MEASUREMENT MODES
The gauge has three measurement modes; echo-echo, interface-echo and automatic.
CHO-ECHO: The gauge has the ability to read thin metals from 0.15 mm to 10.14 mm (0.006" to 0.399").
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The echo-echo mode also allows the user to measure the thickness of metals th at have been previously
coated or painted on the surface. This enables the user to determine the thickness of the metal without
having to remove the paint.
NTERFACE-ECHO: The gauge has the ability to read thicker metals from 1.65 mm to 25.4 mm (0.065" to 1.0"),
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plastics and other difficult materials.
UTOMATIC: In Automatic, the gauge will automatically switch between modes according to the different
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materials being measured.
LAS: Plas mode can be used to measure thin plastics using a special graphite tip - see “Spares &
P
Accessories” on page 30.
The automatic (Auto) mode will generally be the mode of choice for the majority of common applications
with the following exceptions:
• The gauge should be set to echo-echo mode when through-coating measurements are required.
• The gauge should be set to interface-echo when plastics above 1.52 mm (0.060") are being
measured.
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6.1.1 To select measurement mode
Model PG70 Model PG70DL
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1. Press UP to switch between GAtE I-E, GAtE
E-E, GAtE Auto or GAtE PLAS.
2. Repeat until correct mode is displayed.
6.2 SCAN MODE
Scan mode is used to search a large region for the thinnest point.
Scan mode doubles the reading rate to 8 per second. As the transducer is scrubbed across the surface the
gauge searches for the lowest thickness value. When the transducer is removed, the gauge displays the
lowest thickness that was detected.
To switch scan mode on/off:
Model PG70 Model PG70DL
1. Press SCAn to toggle SCAn OFF or SCAn
On.
2. The gauge will display SCAn OFF or SCAn
On.
1. Select MODE/GAtE.
2. Press SEND to switch between GAtE I-E,
GAtE E-E, GAtE Auto or GAtE PLAS.
3. Press MODE to return to the measurement
screen.
1. Select MODE/SCAn
2. Press SEND to toggle scan mode on or off.
3. Press MODE to return to the measurement
screen.
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6.3 DIFFERENTIAL MODE
Your gauge includes Differential Mode which allows it to display the positive or negative difference from
an entered nominal value.
To switch differential mode on/off and enter the value:
Model PG70 Model PG70DL
1. Press the dIFF.
2. The gauge will display dIFF OFF or DIFF
followed by a thickness value.
3. When toggled on, use UP and DOWN to scroll
to the desired nominal thickness value.
4. Press the SEND to select the nominal value
entered.
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1. Press MODE/dIFF
2. The gauge will display dIFF OFF or dIFF ON
followed by a thickness value.
3. Press SEND to toggle dIFF ON or OFF.
4. When toggled on use UP and DOWN to adjust
to the desired thickness value.
5. Press SEND to set value.
6. Press
screen.
MODE
to return to the measurement
6.4 ALARM
The Alarm feature of your gauge allows you to set an audible and visual alarm when taking measurements.
If the alarm is switched on, the green light on the front panel of the gauge is illuminated. If the measurement
falls below the value set by the user, a red light shows on the front panel of the gauge and the beeper is
sounded (if it is switched on).
Use of the red light and beeper improves the speed and efficiency of the inspection process by eliminating
constant viewing of the reading displayed.
To switch beeper on/off
Model PG70 Model PG70DL
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1. While the gauge is off, press and hold down
ALRM.
2. Switch on the gauge.
3. Release ALRM.
The gauge will display bEEP OFF or bEEP
On.
4. Repeat steps 1 to 3 to toggle between bEEP
ON and bEEP OFF.
1. Select MODE/bEEP.
2. Press SEND to toggle the status of the beeper
on/off.
3. Press MODE to return to measurement screen
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To set alarm value and switch alarm on
Model PG70 Model PG70DL
1. Press ALRM to toggle the status of the alarm.
When toggled on the gauge displays ALAr
followed by a thickness value.
2. Use UP and DOWN to adjust Lo alarm
thickness value.
3. Press SEND when correct value is displayed.
The Hi value will now be displayed.
4. Repeat steps 3 and 4 to adjust and set the Hi
alarm thickness value.
To switch alarm off
Repeat the steps above, but select ALAr OFF.
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1. Select MENU/ALAr.
2. Press SEND to toggle the alarm on/off.
3. When toggled on use UP and DOWN to adjust
the Lo alarm.
4. Press SEND and adjust the Hi alarm.
5. Press SEND to confirm.
6. Press MODE to return to the measurement
screen.
6.5 BACKLIGHT
The gauge display includes a backlight which can be set to one of three modes - on/off/auto.
In AUTO mode the backlight automatically illuminates while the gauge is making a measurement and
switches off after several seconds (to conserve battery life).
6.5.1 To set backlight mode
Model PG70 Model PG70DL
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1. Press DOWN to toggle the status of the
backlight.
6.6 LOC MODE LOC mode is used to present identical modification of the measurement mode or any other gauge features
by disabling the options to Press and hold DOWN while switching the gauge on to toggle LOC mode on/off.
1. Select MODE/LItE.
2. Press SEND to toggle the status of the
backlight
3. Press MODE to return to the measurement
screen.
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7 TAKING READINGS
Disclaimer: Inherent in ultrasonic thickness measurement is the possibility that the instrument will use the
second echo rather than the first echo from the back surface of the material being measured while in
standard pulse-echo mode. This may result in a thickness reading which is TWICE what it should be.
The responsibility for proper use of the instrument and recognition of these types of phenomenon rests
solely with the user of the instrument.
7.1 BEFORE YOU START
• Calibrate the gauge.
See page 20.
• Prepare the surface.
See Condition and Preparation of Surfaces on the Elcometer NDT Knowledge Centre at
www.elcometerndt.com .
7.2 PROCEDURE
1. Apply couplant
For the gauge to work correctly there must be no air gaps between the transd ucer and the surf ace of
the material to be measured. This is achieved using a material called a couplant.
Before the transducer is placed on the surface, put a small amount of the couplant supplied with the
gauge on the surface of the material. Typically a single drop is sufficient.
2. Place transducer onto surface of material to be measured
Press the transducer wearface into the couplant. Moderate pressure on the top of the transducer using
the thumb or index finger is sufficient; it is only necessary to keep the transducer stationary and the
wearface seated flat against the surface of the material.
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3. Read display
If six or seven bars of the stability indicator are showing, the display will be reading the correct
thickness of the material directly beneath the transducer.
If the stability indicator has fewer than five bars showing, or the numbers on the display seem erratic,
check to make sure that there is an adequate film of couplant beneath the transducer, and that the
transducer is seated flat against the material. If the condition persists, it may be necessary to select a
different transducer (size or frequency) for the material being measured.
The gauge will perform four measurements every second when the transducer is in con tact with the
surface of the material. The display is updated as each reading is taken.
4. Remove transducer from surface
The display will show the last measurement made.
Note: Occasionally, a small film of couplant that is left on the transducer surface will be measured by the
gauge, changing the displayed thickness reading. Using less couplant can reduce this effect.
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8 MEASUREMENT - RECORDING YOUR READINGS (PG70DL ONLY)
The Model PG70DL is equipped with a data logger a useful feature for reporting your inspections. It
increases efficiency by reducing the time it takes to manually record the measurements during the
inspection process. The gauge can then be connected to a computer or serial printer to save and print the
results of the inspection.
The gauge has a memory capacity of 1000 readings. Measurements are stored in up to 10 batches (files),
each consisting of up to 100 readings (memory locations).
8.1 SETTING-UP THE DATA LOGGER
1. Switch on the gauge.
2. Press MEM to activate the data logger.
The display will flash FILE F-01 (or the last batch used).
3. Press SEND to enter batch setup. The current batch will be displayed (F-01, F-03, etc.)
4. Use UP and DOWN to scroll to the batch (1-10) that will be used.
5. Press SEND to select the batch.
6. Press MEM to access the memory locations in the batch selected.
The current memory location (L007, L039, etc.) and the status of the memory location will be
displayed. The memory location can contain one of three possible things:
• a measurement that was previously stored
• CLr in the display, indicating that the memory location is empty
• ObSt (obstruct) in the display, indicating that a measurement could not be obtained
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7. Press UP and DOWN to advance to the desired memory location.
8.2 STORING A MEASUREMENT
1. Press SEND to store a reading in the memory location.
The data logger will then automatically advance to the next memory location.
8.3 DELETING CONTENTS OF A MEMORY LOCATION
The user may require a memory location that is currently full to be over written. The procedure for deleting
(clearing) the contents of the memory location is outlined in the following steps:
Note: This procedure assumes the steps in 8.1 and 8.2 have been completed, and 8.2 is being repeated.
1. Press UP and DOWN to move to the memory location.
If the memory location is currently full, the display will flash the FuLL symbol.
2. Press CLR to delete the contents of the memory location. The display will flash the memory location
(L011, L099, etc.) and the CLr symbol.
8.4 DELETING CONTENTS OF AN ENTIRE BATCH
The user may require the contents of an entire batch to be cleared of all measurements. This would allow
the user to start a new list of measurements starting at memory location L001, for example. The procedure
is outlined in the following steps:
1. Press MEM to activate the data logging functions and settings.
2. Press SEND to enter batch setup.
3. Use UP and DOWN to scroll to the batch.
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4. Press SEND to select the batch.
5. Use UP and DOWN to scroll to the flashing CLr F-05 (or the batch selected).
6. Press SEND. The display will show CLr?
7. Press CLR to confirm and clear the contents of the entire batch.
8. Press MEM to return to the measurement screen.
8.5 DELETING CONTENTS OF ALL BATCHES
1. Immediately press the CLR. The display will show CLr?
2. Press CLR to clear all batches.
9 TRANSFERRING READINGS TO A COMPUTER
Readings can be transferred from your gauge to a computer. The Model PG70 will transfer readings as they
are taken. The Model PG70DL will transfer readings as they are taken and also transfer the contents of its
memory.
A data transfer cable is used to connect the gauge to the computer. This cable is supplied with the Model
PG70DL, but must be ordered separately for the Model PG70 - see “vices available, and to arrange for nonwarranty service.” on page 29.
Elcometer NDT recommends the use of ElcoMaster™ 2.0 software to tra nsfer the data. Other types of
software may also be used.
ElcoMaster™ 2.0 is supplied with the Model PG70 & PG70DL.
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9.1 CONNECTING THE DATA TRANSFER CABLE
1. Plug the 9-pin female D-type connector on one end of the data transfer cable into the COM port on the
PC.
2. Plug the jack connector on the other end of the data transfer
cable into the RS232 data connection socket on the bottom
of the gauge.
9.2 SETTING-UP THE SOFTWARE
• ElcoMaster™ 2.0 Software for Measurement Data. This
MM
MM
IN
IN
PRECISI ON GAUGE
ON
OFF
R
RS232 data
connection
socket
software allows the user to transfer data from the memory of
the gauge to a PC for archiving, analysis and reporting. Data
can be transferred using the PC connection cable.
ElcoMaster™ 2.0 includes all the charts that you may need together with a report designer to let you
design your reports the way you wish to see them.
All of this software can also be downloaded from the Elcometer NDT website www.elcometerndt.com.
9.3 TRANSFER SET UP
1. Connect your gauge to your PC using the optional cable.
2. Switch on your gauge.
3. Start the software and connect the gauge using the wizard. Then follow the on screen instructions.
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9.4 TRANSFERRING DATA
Model PG70
After taking a measurement, press SEND to send the measurement to the computer.
Model PG70 DL
TRANSFERRING ONE BATCH
1. Press MEM to activate the data logging functions and settings.
2. Press SEND to enter batch setup.
3. Use UP and DOWN to scroll to the required batch.
4. Press SEND to select the batch. The display will flash FILE F-05 (or the batch selected).
5. Use UP and DOWN to scroll to to the required batch.
6. Press SEND to send readings to the computer.
The display will show buSY during data transfer.
Wait until all the data has been transferred.
7. Press MEM to exit the data logging functions.
TRANSFERRING ALL BATCHES
1. Press MEM to activate the data logging functions and settings.
2. Use UP and DOWN to scroll to SEnd ALL flashing on the display.
3. Press SEND to send readings to the computer.
The display will show buSY during data transfer.
Wait until all the data has been transferred.
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4. Press MEM to exit the data logging functions.
9.5 PRINTING A BATCH
A batch can, very simply, be sent to a communications program on a PC and then printed. The procedure
for printing a batch is outlined below:
1. Press MEM to activate the data logging functions and settings.
2. Press SEND to enter batch setup.
3. Use UP and DOWN to scroll to the batch to be printed (F-01, F-05, etc.).
4. Press SEND to select the batch to be printed. The display will flash the batch selected.
5. Use UP and DOWN to scroll to the flashing Prnt.
6. Press SEND to print the contents of the batch.
7. Press MEM at any time to exit the data logging functions.
10 STORAGE
Your gauge has a Liquid Crystal Display. If the display is heated above 50°C (120°F) it may be
damaged. This can happen if the gauge is left in a car parked in strong sunlight.
Always store the gauge in its case when it is not being used.
If the gauge is to remain unused for long periods of time, remove the batteries and store them separately.
This will prevent damage to the gauge in the event of malfunction of the batteries.
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11 MAINTENANCE
Your gauge is designed to give many years reliable service under normal operating and storage conditions.
The transducer will wear with repeated use. Transducer life depends on the number of measurements taken
and the manner in which readings are taken. To extend transducer life, always set the transducer down so
that it is perpendicular to the panel surface. Dragging the transducer along the surface will reduce the life
of the transducer.
Replacement transducers are available from your local Elcometer NDT supplier or directly from Elcometer
NDT.
The gauge does not contain any user-serviceable components. In the unlikely event of a fault, the gauge
should be returned to your local Elcometer NDT supplier or direct to Elcometer NDT. The warranty will be
invalidated if the instrument has been opened.
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12 TECHNICAL SPECIFICATION
Range: 0.15 mm to 25.4 mm (0.006" to 1.000")
Resolution: 0.002 mm (0.0001")
Accuracy: ±0.02 mm (±0.0008"), depends on material and conditions
Sound-velocity range: 1250 m/s to 10 000 m/s (0.0492 in/µs to 0.3937 in/µs)
Weight: 295 g (10 oz) including batteries
Size: 63.5 mm x 120.6 mm x 31.5 mm (2.5" x 4.5" x 1.24")
Operating temperature: -30°C to 50°C (-20°F to 120°F) - depending upon climatic conditions
Case: Extruded aluminium body, Nickel plated aluminium end caps
Battery type: 2 x LR6 (AA), alkaline dry batteries or rechargeable
b
Battery life: 200
hours continuous (alkaline dry batteries)
vices available, and to arrange for non-warranty service.
a. Rechargeable batteries can be used if they are charged outside the gauge.
b. Battery life is reduced to approximately 120 hours when using rechargeable batteries. Follow the instructions
provided by the battery manufacturer when charging and disposing of rechargeable batte ries.
a
equivalents
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13 SPARES & ACCESSORIES
13.1 TRANSDUCERS
Elcometer NDT gauges are not
The transducers listed below are the most commonly used however, Elcometer NDT offer a wide range of
other transducers to suit various applications.
Further information on the transducers available and their applications can be found on the Elcometer NDT
Knowledge Centre on www.elcometerndt.com.
Description Sales Part No.
15 MHz Single Element Delay Line Transducer TX15 MOCM
20 MHz Single Element Delay Line Transducer TX20 MOCM
Delay Line Tip, Acrylic, ¼" Diameter x ½" Length TD-24033-6
Delay Line Tip, Graphite, ¼" TD-24033-8
13.2 CALIBRATION BLOCKS
Elcometer NDT offer a comprehensive range of calibration blocks to suit a wide range of applications and
standards.
Selecting the correct calibration block for the application is essential to ensure accurate evaluation. The
form, shape and material of the calibration block should be appropriate for the material being inspected.
Any artificially induced flaw should closely resemble that of the actual flaw being tested for.
The calibration blocks listed below are a selection of those available - details of the full range can be found
on www.elcometerndt.com.
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supplied with a transducer as standard - this must be ordered separately.
Description Sales Part No.
Calibration Block: 8 Step; 1 - 8mm TW-24005-*
Calibration Block: 10 Step; 2 - 20mm TW-24006-*
Calibration Block: 10 Step; 2.5 - 25mm TW-24007-*
Replace * with S1018 = 1018 Steel Block; A = Aluminium Block; SS = Stainless Steel Block;
T = Titanium Block.
13.3 ULTRASONIC COUPLANT
Each gauge is supplied with a 120ml (4oz) bottle of standard ultrasonic couplant. Replacement bottles and
couplant for high temperature applications are available from your local Elcometer NDT supplier or directly
from Elcometer NDT.
Description Sales Part No.
Ultrasonic Couplant, 120 ml (4 oz) TC-24034-1
Ultrasonic Couplant, 360 ml (12 oz) TC-24034-2
Note: A wide range of other transducers and accessories is available - see www.elcometerndt.com for
details.
13.4 MISCELLANEOUS
Description Sales Part No.
RS232 Cable USB to Serial Converter TL-24031
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14 WARRANTY
Elcometer NDT warrants the Model PG70 and PG70DL ultrasonic gauges against defects in materials and
workmanship for a period of two years from receipt by the end user.
Additionally, Elcometer NDT warrants transducers and accessories against such defects for a period of 90
days from receipt by the end user. If Elcometer NDT. receives notice of such defects during the warranty
period, Elcometer NDT. will either, at its option, repair or replace products that prove to be defective.
Should Elcometer NDT. be unable to repair or replace the product within a reasonable amount of time, the
customer's alternative exclusive remedy shall be refund of the purchase price upon return of the product.
14.1 EXCLUSIONS
The above warranty shall not apply to defects resulting from: improper or inadequate maintenance by the
customer; unauthorised modification or misuse; or operation outside the environment al specifications for
the product.
Elcometer NDT makes no other warranty, either express or implied, with respect to this product. Elcometer
NDT. specifically disclaims any implied warranties of merchantability or fitness for a particular purpose.
Some states or provinces do not allow limitations on the duration of an implied warranty, so the above
limitation or exclusion may not apply to you. However, any implied warranty of merchantability or fitness is
limited to the two-year duration of this written warranty.
This warranty gives you specific legal rights, and you may also have other rights, which may vary from
country to country, state to state or province to province.
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14.2 OBTAINING SERVICE DURING WARRANTY PERIOD
If your hardware should fail during the warranty period, contact Elcometer NDT. and arrange for servicing
of the product. Retain proof of purchase in order to obtain warranty service.
For products that require servicing, Elcometer NDT. may use one of the following methods:
• Repair the product
• Replace the product with a re-manufactured unit
• Replace the product with a product of equal or greater performance
• Refund the purchase price.
14.3 AFTER THE WARRANTY PERIOD
If your hardware should fail after the warranty period, contact Elcometer NDT. for details of the services
available, and to arrange for non-warranty service.
15 TRANSDUCERS
Further information can be found on the Elcometer NDT Knowledge Centre on www.elcometerndt.com.
16 CONDITION AND PREPARATION OF SURFACES
Further information can be found on the Elcometer NDT Knowledge Centre on www.elcometerndt.com.
17 APPLICATION NOTES
Further information can be found on the Elcometer NDT Knowledge Centre on www.elcometerndt.com.
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18 SOUND VELOCITIES OF COMMON MATERIALS
Material
Aluminium 6350 0.250 Paraffin 2210 0.087
Bismuth 2184 0.086 Platinum 3962 0.156
Brass 4394 0.173 Plexiglas 2692 0.106
Cadmium 2769 0.109 Polystyrene 2337 0.092
Cast Iron 4572 0.180 (Approx) Porcelain 5842 0.230 (Approx)
Constantan 5232 0.206 PVC 2388 0.094
Copper 4674 0.184 Quartz Glass 5639 0.222
Epoxy Resin 2540 0.100 (Approx) Rubber, Vulcanised 2311 0.091
German Silver 4750 0.187 Silver 3607 0.142
Glass, Crown 5664 0.223 Steel 5918 0.233
Glass, Flint 4267 0.168 Steel, Stainless 5664 0.223
Gold 3251 0.128 Stellite 6985 0.275 (Approx)
Ice 3988 0.157 Teflon 1422 0.056
Iron 5893 0.232 Tin 3327 0.131
Lead 2159 0.085 Titanium 6096 0.240
Magnesium 5791 0.228 Tungsten 5334 0.210
Mercury 1448 0.057 Water 1473 0.058
Nickel 5639 0.222 Zinc 4216 0.166
Nylon 2591 0.102 (Approx)
Sound-velocity (m/s)Sound-velocity (in/
µs)
Material
Sound-velocity (m/s)Sound-velocity (in/
µs)
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