DeFelsko PosiTector 200 Bedienungsanleitung
PosiTector 200
INSTRUCTION MANUAL v. 2.0
Simple. Durable. Accurate.
Ultrasonic Coating
Thickness Gage
Standard
and
Advanced
2
Introduction
Introduction
Power-up / Power-down
Power-up / Power-down
The PosiTector 200 powers-up when any button is
pressed. To preserve battery life, the Gage powers-
down after approximately 3 minutes of no activity. All
settings are retained.
Throughout this manual, the symbol
indicates more information about the particular topic
or feature is available on our website.
Go to: www.defelsko.com/manuals
NOTE:
The PosiTector 200 is a hand-held Coating
Thickness Gage that uses a non-destructive
ultrasonic principle to measure coating thickness on
a wide variety of substrates.
The PosiTector 200 probe emits a high frequency
sound pulse that travels into the coating via a
coupling gel and reflects from ANY surface that is
different in density. Coating thickness readings are
obtained by measuring the time taken for the
ultrasonic signal to propagate from the probe to the
coating/substrate interface and back. The travel time
is divided by two and multiplied by the velocity of
sound in the coating to obtain the thickness of the
coating.
Couplant
Probe
Coating 1
Substrate
Coating 2
The PosiTector 200
interprets the largest
“echo” within the
Gates as the
coating/substrate
echo.
3
Certification
All probes or gages are shipped with a Certificate of
Calibration. For organizations with re-certification
requirements, gages may be returned at regular
intervals for calibration. DeFelsko recommends that
customers establish gage calibration intervals based
upon their own experience and work environment.
Based on our product knowledge, data and
customer feedback, a one year calibration interval
from either the date of calibration, date of purchase,
or date of receipt is a typical starting point.
Operation Overview
Operation Overview
1. Turn the Gage ON (see Power-Up pg.2)
2. ZERO the probe (see pg.5)
3. ADJUST to a known thickness, if necessary
(see pg.8)
4. MEASURE the part (see pg.5)
Couplant
Couplant
Couplant is required to propagate ultrasound into the
coating. Water is a good couplant for smooth
coatings. Use the supplied glycol gel for rougher
coatings. While it is unlikely that the couplant will
damage the finish or leave a stain on the surface, we
suggest testing the surface by using the couplant on
a sample. If testing indicates that staining has
occurred, a small amount of water can be used
instead of couplant. Consult the Material Safety Data
Sheet available on our website and your coating
supplier if you suspect the couplant may damage the
coating. Other liquids such as liquid soap may also
be used.
Typical Display:
Unit of
Measurement
Indicates Gage is
in single layer
mode (Advanced
models only)
1
Current
Measurement
4
Menu Operation
Menu Operation
Current selection is displayed
with darkened background
Gage functions are menu controlled. To access the
Menu, turn the Gage on, then press the button.
To navigate, press (-) to scroll DOWN, (+) to scroll UP
and to SELECT. Press both (-)(+) buttons at any
time to exit any menu or select Exit from the Menu.
List boxes have a down arrow on the right-hand side.
Use the (-) and (+) buttons until your desired choice
appears, then press to select this choice and
move focus onto the next item.
Memory
Zero
Cal Settings
Setup Reset
Graphics*
Gage Info
Units
Set Clock
Language
“Focus” is currently at this
unselected (empty) Radio button
“Radio” buttons. Only one
can be selected at a time.
“List“ box
a “tick” indicates this square
box has been selected
Graphics on Advanced
models only
*
5
1. Apply couplant to the surface of your part.
2. After power-up, place the probe FLAT on the
surface and press down.
3. Lift the probe when you hear a
double BEEP or see the green indi-
cator light blink. Measurement result
is displayed on the LCD.
A second reading may be taken at the same spot by
continuing to hold the probe down on the surface.
4. When completely finished, wipe the probe clean
of couplant then return both Gage and probe to the
protective case. There is no need to disconnect the
probe from the Gage during storage.
How to Measure
How to Measure
Zero Menu Option
Zero Menu Option
Zero
The probe must be periodically zeroed using the
ZERO menu option to compensate for both extreme
temperature and probe wear effects. Before using,
allow the probe to reach ambient temperature. Wipe
the probe clean of couplant.
If measurements will be made in extreme hot or cold
temperatures, it is recommended to ZERO the probe
in the working environment.
If measurements will be made on rough substrates,
it is recommended to periodically ZERO the probe to
compensate for wear.
6
Set Gates Option
Set Gates Option
Set Gates
Standard Model Advanced Model
Each probe has a measuring range as shown on
page 19. For example the C probe can measure
coatings in the range of 50 to 3800 microns (2 to
150 mils).
Gates are used to narrow the range of thickness that
the Gage examines. Gate A sets the minimum
thickness limit and Gate B the maximum.
For most applications the default Gate values do not
have to be adjusted. But some conditions may exist
in the user's application that cause the Gage to
display very low or non-repeatable readings. These
conditions include…
·rough or textured coatings
·hard (dense) coatings
·coatings applied in multiple layers
·coatings applied on a very thin, hard substrate
Important: When measuring, the Gage finds the
most distinct interface within the two Gate settings. If
the coating thickness is outside this range, incorrect
or dashed readings may occur. The PosiTector 200
interprets the largest “echo” or echoes within the
gates as the coating/substrate echo.
7
To make adjustments:
1. Measure the coated part.
2. Select the Set Gates menu option.
3. Gate Acan be changed first. Adjust the value
down (-) or up (+).
Press to accept the value and to move to
Gate B.
4. Gate Bcan now be changed. Adjust the value
down (-) or up (+).
5. Press to accept the value. Standard models
will exit.
6. Advanced models will display a Cursor which
allows analysis of the peaks displayed in the
Graph. Adjust the Cursor down (-) or up (+).
Press to accept Gate values and exit.
Use the Cursor to measure
multi-layer coating systems with
more than 3 distinct layers.
NOTE:
Here are some typical Gate settings...
Expected paint thickness Gate A Gate B
500um (20 mils) on concrete 130µm (5 mils) 1000µm (40 mils)
50µm (2 mils) on wood 25µm (1 mil) 250µm (10 mils)
The displayed thickness reading may
change when Gate values are adjusted. The new
thickness value represents the distance to the
"loudest" interface within the new A/B Gate values
(see pg.2). This handy feature makes it easy to
ignore other measurements such as surface
roughness.
For additional help with Gates see Application
Notes (pg.15)
NOTE:
8
Adj Thickness
Adjust Thickness Option
Adjust Thickness Option
Select a reference standard of material as close as
possible in composition to the intended application.
For best results, the thickness of the reference stan-
dard should be equal to or slightly greater than the
thickness of the coating to be measured.
1. Apply a drop of couplant onto the reference stan-
dard.
2. Measure the reference standard.
3. Lift the probe. Select the Adj Thickness menu
option.
4. Adjust the display down (-) or up (+) to the
reference standard thickness.
5. Press to store the adjustment. Standard
models will exit.
6. Advanced models with more than 1 layer selected
will continue to the next layer. Adjust the thickness
(step 4) and store the adjustment by pressing .
When all layers have been adjusted, the gage will
exit the Adj Thickness option.
Note: A Reset (pg.11) will restore factory settings.
9
Memory Mode
Memory Mode
The PosiTector 200 can record 10,000
measurements in up to 1000 groups (batches) for
on-screen statistical purposes, for printing to an
optional IR printer, or for downloading to a personal
computer using optional PosiSoft software and USB
cable.
-closes any currently opened batch and creates a
new batch name using the next higher number. For
example, if only Batch 1 and Batch 3 exist, then Batch
4would be created and made the current batch.
Statistics are displayed and each measurement will
now be simultaneously shown on the display and
stored into this new batch. On screen statistics are
immediately updated with each measurement. New
batch names are date stamped at the time they are
created.
When a batch is open, create a new batch
by pressing (+)
Memory
Open
New Batch
Shortcut:
-selects a previously created batch name to open
and make current. If it contains measurements, on-
screen statistics will immediately reflect values
calculated from this batch.
Mean
(average)
Standard
Deviation
No. of
measurements
Max and Min
measurement
Current
Batch
Last
reading
10
Print
-prints all stored measurements to the optional IR
printer or to a PC’s default Windows printer via the
optional USB cable and PosiSoft software. Press
(-)(+) simultaneously to cancel printing.
Downloading Measurements Stored in Memory
Measurements stored in the Gage's memory (in
batches) can be downloaded to a computer using
optional PosiSoft software and USB cable.
Measurements are not erased from memory after
downloading.
PosiSoft® allows entry of notes and annotations,
prints histograms and basic charts, manages data,
and readings can be exported to a document or
spreadsheet.
Remove the last reading from the current open batch
by pressing (-).
NOTE:
View
Delete
-removes a batch completely from memory. The
name is deleted and all measurements are erased.
-lists all readings on the display from the current or
most recently used batch. It begins by showing the
last 10 measurement values. Scroll using the (-) or
(+) buttons. Hold for 1 second to scroll a page at a
time.
To change or delete a value, scroll to that value
(align the “+” symbol beside it) then either take
another measurement to change it, or press to
delete it or exit. Statistics are updated.
Close
-stops the recording process, closes the current
batch, and removes the statistics from the display.
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5
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