PEC Flaw Detector PE4332 Operation Manual
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waveform can occur when there are interference sources near the test item or when
the pipes with the tin casing are tested. To avoid interferences, the interference
sources shall be removed from the test site, if possible. If it is impossible to remove
the interference source, it is recommended to use averaging with the averaging
number of 4 or 8 (see "Averaging"). In case of inspection of the pipes with the tin
casing, this distortion appears mainly due to the acoustic effect, which can be
reduced by pressing the sensor closer to the casing surface. You can also additionally
damp fluctuations in the casing using rubber films. It is recommended to use
averaging with the averaging number of 4 or 8 (see "Averaging") for work on the
items with the tin casing.
Prior to the Device operation in simple mode of thickness measurements,
enter the insulation thickness using the
menu ("Insulation thickness").
You shall also enter data in the
menu ("Test item parameters"), particularly, nominal
thickness of the test item, material of the insulation casing, and thickness of the insulation casing.
Any thickness measurement to be carried out with PE4332 is performed
relative to the known thickness in a certain point of the test item. Therefore, prior to
the thickness measurements, it is necessary to calibrate the Device for this test item.
For calibration, install the sensor on the test item and calibrate the Device using the
menu ("Calibration") by entering the known thickness of the test item.
After calibration, you can measure the thicknesses. To measure the thickness,
install the sensor on the test item, press on the
key (single thickness
measurement key) on the Device keyboard. The Device will measure the thickness,
and the measured value will be displayed on the Device and sensor screens. You can
start the continuous measuring mode using the
sensor key. In this mode, the
Device performs thickness measurements periodically; it updates the readings on the
Device and sensor screens each time after measuring. To deactivate the continuous
measuring mode, press on the
key again.
Scan mode