CDI TRAXALL 770 User Manual page 29

OPERATION
Tracking Example 2
SETTINGS:
Pig:
Fill setting:
Record mode: Manual
NOTE: Unless the MFL tool is configured with an ILI transmitter,*
Fill mode must be set to Mag when manually tracking/recording
magnetic flux leakage devices. Standalone MFL detection is somewhat
different from transmitter detection; as there is no active transmitter,
effectiveness will depend upon variable factors including proximity,
pipe material and wall thickness, etc. Preliminary field testing indicates
effective MFL-to-TRAXALL proximity is within 4.5 meters.
Logging Data
Unlike AUTO TRIGGER
mode, TRAXALL begins
recording as soon as you
enter manual mode.
Here, transmitter
proximity is indicated.
Polarity shift indicates
point of passage
triangle indicates
automatic MR reset.)
* Inline inspection (ILI) transmitters
are tracked in Legacy mode (see
following example on pg. 31)
TRAXALL 700 SERIES USER GUIDE
Magnetic Flux Leakage (MFL)
Mag
(Red
Page 29 of 84
TRACKING
Automatic MR reset