DeFelsko PosiTector BHI Quick Manual
Barcol Hardness Impressor
Quick Guide v.1.0
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Introduction
Introduction
The PosiTector Barcol Hardness Impressor (BHI) is a hand-held
electronic instrument that measures the indentation hardness of soft
metals (aluminum, copper, brass), harder plastics and fiberglass. It
consists of a PosiTector body (Standard or Advanced) and an
interchangeable probe.
This Quick Guide summarizes the basic functions of the gage.
Quick Start
Quick Start
The PosiTector BHI 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.
1. Power-up the Gage by pressing the center navigation button.
Ensure the probe indentor (pg. 2) is not in contact with any
surface.
2. To take a measurement:
a) Ensure the probe is perpendicular to the surface being tested.
Press the probe down onto the material to be measured until the
indentor foot is in full, flat contact with the surface. HOLD STEADY
against the surface.
b) The Gage will emit a single BEEP and display a ▼ symbol
indicating a reading is being taken. The test timer will begin
counting down (see Test Time, pg. 7). When the timer reaches 0s,
the Gage will BEEP twice and display the measurement value.
3. Lift the probe from the surface between readings.
Verify accuracy (pg. 3) on test disks at the beginning and the end of
each shift, or if the gage is dropped or suspected of giving erroneous
readings. Be sure to place the leg on the included leveling plate when
testing disks to maintain perpendicularity.
IMPORTANT:
when they become worn or visibly pitted.
Test disks should be replaced
1
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Menu Operation
Menu Operation
Gage functions are menu controlled. To access the Menu, power-up
the gage, then press the center navigation button.
To navigate, use the Up and Down buttons to scroll vertically and
to SELECT.
Previous Page
(Exit)
Access the Menu
(Center/Select)
When powered-up, the PosiTector automatically determines which
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 different
probe. It is not necessary to power-down the Gage when
switching probes.
The PosiTector gage body accepts a wide variety of probe
types including magnetic, eddy-current and ultrasonic coating
thickness, surface profile, environmental, hardness, salt
contamination and ultrasonic wall thickness probes.
Next Page
Up
Down
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.
Probes
Probes
The PosiTector BHI consists of the PosiTector
BHI probe, Standard or
leveling plate, test disks (2), replacement indentor,
replacement indentor tool, glass plate, calibration
certificate, protective rubber holster with belt clip,
wrist strap, 3 AAA alkaline batteries, instructions,
protective lens shield, convenient hard shell
carrying case, USB cable, PosiSoft Software, and
two (2) year warranty.
Advanced gage body,
Sleeve
2
Indentor Foot
Indentor
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Calibration, Verification and Adjustment
Calibration, Verification and Adjustment
Three steps ensure best accuracy…
1. Calibration - typically performed by the manufacturer. All probes
include a Certificate of Calibration.
2. Verification of Accuracy - typically performed by the user on
known reference standards such as the included test disk.
3. Adjustment - to a known hardness
Calibration
Calibration is the high-level, controlled and documented process of
measuring traceable calibration standards over the full operating
range of the probe, and verifying that the results are within the stated
accuracy of the probe. Calibrations are performed by the
manufacturer, their authorized agent, or by an accredited calibration
laboratory in a controlled environment using a documented process.
Verification
Verification is an accuracy check performed by the user on known
reference standards. A successful verification requires the Gage to
read within the combined accuracy of the probe and the Test Disks.
Instrument operation may be verified with the included Test Disks and
Leveling Plate. Position the Leveling Plate under the Leg and place the
Test Disks on a flat, hard surface (as shown). Take three to five
readings on each disk. The measurement points should be at least
6mm (0.24”) apart. If the average of those readings is outside the
combined accuracy of the Test Disk and gage, service may be
required.
Leg
Sleeve
Test Disk
Leveling
Plate
3
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