© PCE Instruments
55
Eng
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s
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8 After changing any parameter that affects the absolute value of a signal it is necessary to
perform balancing by pressing
key.
9 Select the required type of a threshold level.
10 Move the probe across the artificial defect at calibration block for several times and visually
set up the ALARM relative to the signal from the defect. After the ALARM was properly set up,
the light alarm while detecting the defect will be triggered on the flaw detector keypad (digital
indicators on the display) and sound alarm (if it has not been turned Off in "SETTINGS" menu).
8.3
Rotation Probe
1. Connect the rotary scanner to the flaw detector using the connection cable.
2. Connect the ECP to the rotary scanner. Approximate marks on the case of the probe and
scanner should coincide.
3. Without applying excessive force insert the ECP in the scanner. In case, when carrying out
the connection you felt that the mating connectors have rested at each other, but the marks on
the cases match, you must slightly decline the ECP from the vertical axis and insert the ECP
until it stops. When the ECP is properly placed in the scanner, the o-rings should not be seen.
4. Set the ECP frequency in a range specified in the registration certificate for the ECP.
5. Set the ECP drive not more than recommended in a registration certificate for the ECP.
6. At "ROT PRESENT" position, set up "On". In displayed menu choose the type of the rotary
scanner and press
key.
7.
At "RРМ" position, firstly set the min rounds – 600.
8. Press the switched On button on the case of the rotary scanner. The ECP should be in the
air.
9. To set the scanner rounds properly, press
key and wait for the end of the procedure.
10. Press the switched On button of the rotary scanner.
11. Set the required rounds for the scanner.
12. Put the ECP into the hole of the calibration block.
13. Press the switched On button on the case of the rotary scanner.
14. Press
key to balance the ECP.
15. It is recommended, the signal from the defect to be placed in the first or second quadrant of
the complex plane. To correct the ECP phase use
parameter.
16. Increasing the gain on preamplifier
and amplifier
maximize the signal amplitude,
but at the same monitor behind parameters of the input circuit.
17. After changing any parameter that affects the absolute value of the signal it is necessary to
perform the balancing by pressing
key.
18. Select the Bandpass filter and perform it`s setting. First of all, minimize the distortion signals
from ECP in the hole by setting the "LB" parameter, and then proceed the "HB" setting. The
filter is set by trial and error.
19. During the ECP rotation in a hole perform the ALARM setup. Visually set the ALARM
relative to the signal from a defect. After the ALARM was properly set up, the light alarm will be
triggered on the flaw detector keypad at detecting the defect (digital indicators on the display)
and sound alarm (if it has not been turned off in "SETTINGS" menu).
