Leaders in Pipeline Survey Systems
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OPERATING MANUAL
PART 1 –
The distance from the start point (#000) is now entered as 16m see Fig 20 right.
NOTE: you may change your mind at this point and
below the go- - box key is used
POSITIVE away from
the Signal Generator (SG) –
( ve) distances are towards
Press the [ ]key now.
This is the final screen before the data
is permanently stored.
Data now on display – see Fig. 21 right –
is as before:
DEPTH
COVER
CURRENT
DISTANCE (16m)
THIS POINT (#001)
LAST POINT (#000)
CHAINAGE (16m)
Plus newly displayed data on this screen:
CONDUCTANCE (µS/m
2
– micro-siemens per sq.metre
RESISTANCE (k¿/ m
2
– kilohms per sq.metre
these relate to the coating condition allowing for pipe diameter and wall thickness.
and finally - ATTENUATION
The attenuation value (mb/m or mb/ft) is the absolute rate of loss of signal current from,
the pipeline over the section #000 - #001. It is independent of the value of the initial
Fig. 20 Distance Screen 2
– Distance Screen 3
Fig. 20 –
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