DeFelsko PosiTector SPG Manuale utente
Table of Contents
Table of Contents
Introduction ........................................................ 2
Operation Overview ........................................... 3
Why is Measurement Important? ...................... 4
Probes ............................................................... 5
Menu Operation ................................................. 6
Calibration, Verification & Adjustment .......... 6
Cal Settings Menu ........................................ 8
Setup Menu .................................................. 9
Statistics ....................................................... 12
Memory Management .................................. 13
Connecting to a Computer............................ 17
Available Options............................................... 21
Temperature ...................................................... 22
Power Supply / Battery Indicator ....................... 22
Returning For Service ....................................... 23
Troubleshooting ................................................. 23
Technical Data ................................................... 24
2
Introduction
Introduction
The PosiTector Surface Profile Gage (SPG) is a hand-held
electronic instrument that measures the peak-to-valley height of
the surface profile of abrasive blast cleaned surfaces. It consists
of a body (Standard or Advanced) and probe.
PosiTector SPG Kit Contents
- PosiTector SPG Probe (pg. 5)
- Glass zero plate amd metal shim (pg. 8)
- Protective rubber holster with belt clip
- Protective Cap for Probe (pg. 2)
- Protective Lens Shield (pg. 2)
- Wrist strap (pg. 2)
- 3 Alkaline AAA batteries (pg. 22)
- Quick Guide Instructions
- Nylon carrying case with shoulder strap
- USB Cable (pg. 18)
- Certificate of Calibration traceable to NIST (pg. 4)
- Two (2) year warranty on Body and Probe
Protective Cap
PosiTector SPG models are shipped with a protective plastic
cap over the probe. Remove this cap prior to use. Replace it
when the instrument is not in use to protect the probe.
Wrist Strap
We recommend attaching and wearing the
supplied wrist strap. 1
2
Plastic Lens Shield
The LCD is covered with a thin plastic film for protection against
fingerprints and other marks during shipment. This film, while
usually removed before using the instrument, can be left in place
to protect against paint overspray. Replacements can be
purchased.
3
Typical Screen
Current
Measurement
Battery Indicator
Unit of
Measurement
Factory Zero in
Use
1. Remove the protective plastic cap from probe.
2. Power-up Gage by pressing the center navigation button.
3. Place the included glass zero plate onto a stable, flat surface.
Take a measurement on the plate with the PosiTector SPG. If
the average of several readings is greater than ± 5 µm (0.2 mil),
zero the instrument (see pg. 8).
4. Place the probe FLAT on the surface to be measured such that
the tip of the probe reaches into the bottom of a profile valley.
HOLD STEADY. The Gage will BEEP twice and display the
measurement.
5. Lift the probe from the surface between measurements.
Operation Overview
Operation Overview
The PosiTector SPG powers-up when the center navigation
button is pressed. To preserve battery life, it powers-down after
approximately 5 minutes of no activity. All settings are retained.
R
Measurement
Type
4
Why is Measurement Important?
Steel is often abrasive blast cleaned or otherwise roughened prior
to painting. The peak-to-valley height of the resultant surface
profile is an important factor in the performance of applied
protective coatings.
Low profile may reduce coating bond strength (adhesion). Too high
and the peaks may receive insufficient coverage and possibly rust
prematurely. The costly application of more coating may be
required if the profile is too high.
For these reasons, surface profile should be measured prior to
coating application to ensure that it meets contract specifications.
Certification
All probes include a Certificate of Calibration. For organizations
with re-certification requirements, instruments may be returned at
regular intervals for calibration. DeFelsko recommends that
customers establish 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. Written calibration
procedures are available from DeFelsko Corporation at no
charge.
5
Probes
Probes
The PosiTector SPG consists of a body and a probe. See Info
(pg. 10) to find your body and probe type. More probe information
is available at www.defelsko.com/SPG. To disconnect a probe
from a body, power-down the instrument and pull the plastic probe
connector horizontally (in the direction of the arrow) away from the
body. Reverse these steps to attach a new probe.
When powered-up the PosiTector automatically
determines what type of probe is attached and does a
self-check.
The supplied probe tip has a 60° angle to comply with
most test standards including ASTM D 4417 B. An
optional 30° angle tip with replacement tool is available for special
applications or to comply with Australian Standard AS 3894.5.
A replacement tool is included with the purchase of either the 60°
or 30° angle tips. Insert the two legs of the replacement tool into
the probe tip and turn counter clockwise to remove the tip. Insert
the new tip and tighten clockwise. Do not over tighten. Since the
factory zero setting may not always be precise after a probe tip
exchange, the gage should be checked on the included glass
plate and zeroed if necessary.
6
Memory
Statistics
Zero
Setup
Connect
Help
Power Off
Exit
Sync Now
USB Drive
Auto SYNC
Bluetooth
Updates
Exit
Menu Operation
Menu Operation
Instrument functions are menu controlled. To access the Menu,
power-up the instrument, then press the center navigation button.
Below is a sample menu for a PosiTector SPG Advanced Model:
Some buttons have a tick box to their
right to indicate current status. An empty
box indicates that feature is not active.
Current selection is displayed
with darkened background
Up
Down
Center
To navigate, use the Up and Down buttons to
scroll and to SELECT.
Select Exit to exit from any menu.
ü
Navigation Button
Calibration, Verification & Adjustment
Calibration, Verification & Adjustment
The PosiTector SPG non-destructively measures the thickness of
coatings on metals.Three steps ensure best accuracy…
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.
7
The standards used in the calibration are such that the combined
uncertainties of the resultant measurement are less than the stated
accuracy of the Gage. Typically a 4:1 ratio between the accuracy
of the standard and the accuracy of the Gage is sufficient.
The PosiTector SPG is shipped with a Certificate of Calibration
showing traceability to a national standard. For organizations with
re-certification requirements, the PosiTector SPG may be
returned at regular intervals for calibration. DeFelsko recommends
that our 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.
Written Calibration Procedures are available online at no charge.
Verification of Accuracy
Instrument accuracy is verified using the included metal shim and
glass zero plate.
Place the plate onto a stable, flat surface. Take several
measurements. If the average is greater than ±5 µm (0.2 mil), zero
the instrument (pg. 8).
Next, place the metal shim over the glass plate and measure
ensuring the probe needle touches the glass plate in the area
between the shim’s “legs”. The average of several measurements
should be within the combined tolerances of both the shim and the
gage (±10%). For example, measuring a 75 µm (3 mil) shim should
result in values between 67.5 µm (2.7 mils) and 82.5 µm (3.3 mils).
If not, see Returning for Service (pg. 23).
To guard against measuring with an improperly adjusted Gage,
verify the Gage at the beginning and the end of each work shift.
During the work shift, if the Gage is dropped or suspected of giving
erroneous readings, its accuracy should be re-verified.
In the event of physical damage, wear, high usage, or after an
established calibration interval, the gage should be returned to the
manufacturer for repair or calibration.
8
Zeroing the Instrument
Zeroing the Instrument
Zero
The PosiTector SPG has only one adjustment point at zero. The
zero point can be set using one of two methods. Both methods are
found under the Zero menu option.
-The factory zero setting is restored during a RESET
(below)
-The factory zero setting may not always be precise,
particularly after a probe tip exchange. For best accuracy,
the gage should be zeroed on the included glass plate.
1.Select from the menu.
2.Press the (+) button to select the number of readings to be
used to obtain an average, typically 3.
3.Repeatedly measure the glass plate. After the last
measurement the gage will calculate a Zero which represents the
average of all the Zero readings taken.
Zero
Glass Plate Zero
Setting the instrument to zero on the glass plate is the preferred
zero adjustment method:
Factory Zero
If a glass plate or suitable smooth, hard surface is not available,
the factory zero setting can be restored:
1. Select from the menu.
2. Press the down button to select “Reset” and press the center
navigation button . The factory calibration icon will appear
on the LCD.
Zero
NOTE:
9
Setup
Setup Menu
Setup Menu
Reset
Reset (soft reset) restores factory settings and returns the
instrument to a known condition. The following occurs:
- All batches, stored measurements, images, and batch names
are erased.
- The zero adjustment is returned to the factory setting. Since
this may not always be a precise zero, the gage should be
checked on the glass plate (pg. 8)
- Menu settings are returned to the following:
Memory = OFF
Statistics Mode = OFF
Hi Lo Alarm = OFF
Bluetooth = OFF
Perform a more thorough Hard Reset by powering down the
instrument, waiting several seconds, then simultaneously holding
both the center and (+) buttons until the Reset symbol
appears. This returns the instrument to a known, “out-of-the-box”
condition. It performs the same function as a menu Reset with
addition of:
NOTES: - Keep the gage away from metal during a Reset.
- Date and Time are not affected by either Reset.
Units = microns
Flip Display = Normal
Auto Sync = OFF
White on Black = OFF
USB Drive= ON
Language = English
Battery Type = Alkaline
Backlight = Normal
Bluetooth Streaming = OFF
- Bluetooth Pairing info is cleared.
- Menu settings are returned to the following:
10
Info
Displays the model number & serial number, probe type & serial
number, PosiTector.net registration key, the amount of remaining
memory for storage of readings, date and time, and software
packages.
For security purposes, the registration key is required to add the
instrument to your free PosiTector.net account.
Flip Display
This option causes the display to read upside down. Ideal for use
overhead with the resultant display conveniently pointed toward
the operator.
White on Black
Inverts the LCD display to white on a black background to provide
better readability in some surroundings.
(Advanced models only)
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