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OPERATION IN EACH SITE SITUATION
6-4 Measuring a depth near the end of a pipeline and near a bend.
At the end of the pipeline or near a bend, the magnetic field surrounding the pipe is disturbed. Therefore, the risk of error
when measuring its depth increases. Using the
Transverse
depth
measurement
mode
makes it less susceptible to magnetic field
disturbances. Use this mode for such situations after confirming there is an end or bend in the pipeline.
6-5 Confirmation of buried depth condition of pipeline
When using the
conventional
depth mode, there is a chance of misinterpreting the depth/shape of a pipeline when there are sudden
changes in pipeline depth, as shown in the first diagram below.
When using the
continuous
depth mode, the pipeline depth is
measured in certain intervals with the measurement depth displayed, as shown in the second diagram below. This mode makes it
easier to accurately confirm the depth situation of the pipeline. This mode is also useful when trying to find obstacles to avoid (such as
bends in pipes etc.) when installing new pipelines.
Auto depth measurement point
■
Example of
conventional
depth measurement mode
Measurement Point 1
Measurement Point 2
If you do not measure the
depth here, you do not
know the depth of the
falling section
Buried pipe
Surface
■
Example of
continuous
measurement mode
Surface
Buried pipe
