Leaders in Pipelin
e Survey Systems
C
C
C
-
-
-
S
S
S
C
C
C
A
A
A
N
N
N
2
2
2
0
0
0
1
1
1
0
0
0
SYSTEM MANUAL Version 6.03i
61
10. DEMO MODE
Contained within the C-SCAN 2010 Detector is a pre-loaded set of survey data. This data
is supplied to enable the user to practice the technique of surveying without the need to
connect to a pipeline. The four surveys included are tabled below so that any self training
can be verified against the correct data. To enable these surveys, the Detector will need
to be put into DEMO mode. To do this, select
MENU
followed by
SETUP
then
DEMO
as
described under the MENU screen in section 5.4.
Once Demo mode has been initiated, the START-UP screen will display “Demo – no GPS”
and the GPS function will be disabled. When the
SEARCH
function is enabled, instead of
searching for a real pipeline, the Detector will default to the demo data below. The
Pipeline Position Indicator circle will simulate the presence of a pipeline; the Surveyor
should take a reading as normal. To further simulate the process, a mathematical
calculation of the data is completed, meaning that the data produced will vary slightly from
that shown below. This is to simulate taking a real reading at different stages of the
process. If a reading isn’t taken in time, the demo program will loop through the process of
locating the pipeline, and will continue to repeat the search until the
Calculation
(
)
button is selected.
To ensure that no actual surveys are affected the demo function is cancelled if the
Detector is put into standby or powered off at the battery switch. Although it must be
remembered that all data saved whilst in demo mode will be saved to the Detector’s
memory, so to replicate faithfully the process of carrying out a proper survey.
Each survey has different characteristics. Surveys 1 to 3 include GPS co-ordinates;
Survey 4 does not have GPS co-ordinates and requires manual entry. Surveys with GPS
data can still have their distances entered manually, either by ‘distance’ or ‘chainage’, and
it is recommended to practice all these methods.
NOTE:
•
As with an actual survey, the survey data points will increment with each point
saved to memory. To separate each individual survey, remember to include
start points.
•
The figures provided in the tables below are the ‘ideal’ result. To simulate a
real survey, all data is calculated in the same way as it would be during an
actual survey, so the results achieved will vary slightly depending on when the
sample was taken, i.e. how ‘overhead’ the Detector is when a sample is taken.
•
If no pipeline diameter is entered, depth of cover and conductance will be
blank but attenuation will still be given. Remember that the pipeline
characteristics (diameter, wall thickness, coating type etc) can be added in
DCAPP after the survey has been downloaded.
