DeFelsko PosiTector PC User Manual

Introduction

The PosiTector®PC Powder Checker®is a hand-held, non-contact
Coating Thickness Gage that uses an airborne high frequency
ultrasound to analyze coating powder applied to rigid substrates to
calculate and display a predicted cured thickness.

The instrument consists of a base unit and a probe that communicate
with each other via Bluetooth wireless technology. They must stay
within 10 meters (30 feet) of each other while measuring. A rubber
holster with belt loop allows the base unit to stay with the operator while
measuring.

Note: Do not use compressed air on the probe. Tips for cleaning the
screen guard can be found on pg 15.

Note: 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

Power-up / Power-down

Step 1: Power-up the probe by pressing the button.
Step 2: Power-up the base unit by pressing any one of the 3 buttons. A

beep and a solid probe icon on the base unit indicates both units are
ready to measure.

To preserve battery life, both units power-down after approximately 5
minutes of inactivity. All settings are retained.

When a USB cable is connected to the base unit, power is supplied
through the USB cable. The batteries are not used and the base unit
will not automatically power down. The probe will still automatically
power down.

The base unit can be powered down at any time by holding down both
(-) and (+) buttons simultaneously for 5 seconds. The probe will also
power down.

1

Operation Overview

1. POWER UP both units.

2. ZERO the probe (see pg. 6)

3. ADJUST to the specific powder if necessary (see pg. 8)

4. MEASURE the applied powder (see below)

How to Measure

1. Power-up both units. Bring the probe to within 5 cm (2 inches) of the
coating powder.

2. Press and hold the button. Bring the probe closer to the powder.
While watching the probe display, align the Distance Paddle with the
Distance Target Bar. (see pg. 3)

3. While the probe button is depressed, probe distance and angle
should be varied slightly keeping:

(a) the Distance Paddle close to the Distance Target Bar, and
(b) the Amplitude Indicator at maximum height.

4. Release the button when you hear a double BEEP or see a
thickness measurement on either display.

Both units will power-down automatically after approximately 5 minutes
of inactivity.

Measurement Notes:

If a thickness result does not appear after 5 seconds, release the
measurement button and try again. Wait 1 to 2 seconds between
readings.

Small, erratically swinging parts may present measurement challenges.
Steady the part whenever possible.

If erroneous readings continually result, change the measurement
strategy by rotating the probe, altering its alignment to the part, or by
measuring a different location on the part.

For best results use Statistics mode (pg. 12) to generate averages.
The average of a series of measurements is often a more meaningful
prediction of cured thickness than a single reading.

2

Displays

3

Solid indicates good
wireless connection to
probe. Flashing
indicates no probe
connection.

Base Unit Display:

Last
Measurement

Current Calibration
Setting

Unit of
Measurement

Maximum Amplitude Dot

Probe Display (button not pressed):

Amplitude Indicator

Results Indicator

Distance Target Bar

Probe Batteries Status (pg. 15)

Bluetooth Function Indicator

Predicted Cured Thickness Result

Distance Paddle

Predicted Cured

Thickness Result

Probe Display (button pressed):

Factory Calibration
Symbol (pg. 8)

Bluetooth Function Indicator: The symbol indicates the base unit
and wireless probe are communicating properly.
Results Indicator: When the probe is in the proper position and good
samples are being taken, a solid DOT blinks on the probe display, the
base unit LED blinks green and emits a high beep. When samples are
inconclusive, an "X" blinks on the probe display, the base unit LED
blinks red and emits a low beep.
Distance Paddle: Graphically represents the distance to the target. It
rises and falls to indicate distance from the probe tip to the surface of
the powder.
Distance Target Bar: The optimum distance for measurement is 18
mm (3/4 inch) between the tip of the probe and the surface of the
applied powder. During measurement, keep the Distance Paddle close
to the Distance Target Bar.
Amplitude Indicator: Strength of the ultrasonic echo. A high position
indicates good probe orientation relative to perpendicular. The bar will
generally reach higher positions when measuring thin powder and when
the probe is at a 90-degree angle to the powder surface.
Maximum Amplitude Dot: Marks the highest position the Amplitude
Indicator reached during the current measurement attempt.
Predicted Cured Thickness Result: When a valid measurement is
calculated, the base unit BEEPS twice, the LED blinks green, and the
predicted cured measurement result is displayed on both the probe and
base unit. Continuing to hold the probe button will result in additional
samples being taken.

There are 4 types of displayed measurement results:

43 — Predicted thickness result.

0 — The collected samples have resulted in a good reading, but the

resultant predicted cured thickness is less than the minimum range.
++ — The collected samples have resulted in a good reading, but the
resultant predicted cured thickness is greater than the maximum range.

- - — An indeterminate or invalid reading.

4

Menu Operation

Instrument functions on the base unit are menu controlled. To access
the full Menu, power-up both the probe and base unit. Then press the

(.:::.button. If the probe is not powered-up a condensed menu is

displayed.

5

Reset

Flip Display

Gage Info

Units

Set Clock

Language

USB Drive

Exit

Memory

Statistics*

Zero*

Cal Settings

Setup

Exit

* Appears when probe is ON

Current selection is displayed
with darkened background

To navigate, press (-) to scroll DOWN, (+) to scroll UP and (.:::.) to
SELECT. To exit any menu, press both (-) and (+) buttons
simultaneously or select Exit from the Menu.

List boxes have a down arrow on the right-hand side. Use the (-) or (+)
buttons until your desired choice appears, then press (.:::.) to select this
choice and move focus onto the next item.

A "tick" indicates this square
box has been selected

“List” box