DeFelsko PosiTector BHI Gebrauchsanweisung Seite 4

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. See www.defelsko.com/probes
Calibration and Verification
Calibration and Verification
Two 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.
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 on
page 4). Take three to five readings on each disk. The
measurement points should be at least 6 mm (0.24") apart. If the
average of those readings is outside the combined accuracy of the
Test Disk and gage, service may be required.
Some causes for the gage to not read properly are the indentor
being damaged, incorrect pressure being applied to the test disk
or temperatures beyond normal conditions.
3