Leaders in Pipeline Survey Systems
4 - 13
OPERATING MANUAL
If a point is stored with a BAD or OLD GPS position, the position displayed is
likely to be that of the previous point. This would create a distance of zero.
C-SCAN picks this up and will not allow the operator use the GPS position
(however, it will be recorded). The operator must then enter the distance
manually, or go back to the SEARCH screen and wait for acquisition.
Causes of acquisition loss are usually caused by the antennae being temporarily
obscured, either by buildings or being inside a vehicle. If the GPS has been on
since a good position indication, the re-acquisition time is a few seconds.
When a survey is conducted in the open where the operator walks between
survey points, it would make sense not to turn off the unit; however, this reduces
battery life. A power saving mode has been introduced that enables the GPS
unit to remain on whilst all other devices are switched off. To enter this mode,
press the ON-Off key, If the GPS is on when this is done, a message will be
shown enabling the unit to be switched to Power-Save mode. This occurs only if
the GPS has been on prior to switching off. The unit will switch off completely
after 30 minutes in standby.
4.10 Battery Life/Power modes
The power consumption of the C-SCAN 2010 varies depending on use. This can
be split into a number of categories. The tables below show the categories plus
power consumption. Switching the main switch to OFF will disconnect the
batteries.
Supplied Ni-Cd Rechargeable batteries (fully charged)
Mode System GPS Antennae Consumption Time
Survey (GPS) ON ON ON 650mA 5 hours
Survey (no GPS) ON OFF ON 450mA 8 hours
Standby OFF ON OFF 150mA 23 hours
Non-survey ON OFF OFF 60mA 4 days
Off OFF OFF OFF <3mA 4 months
Duracell type batteries.
Mode System GPS Antennae Consumption Time
Survey (GPS) ON ON ON 650mA 12 hours
Survey (no GPS) ON OFF ON 450mA 17 hours
Standby OFF ON OFF 150mA 2 days
Non-survey ON OFF OFF 60mA 11 weeks
Off OFF OFF OFF <3mA 1 year
These times are continuous. In a real survey, the times will not be continuous.
Realistically the maximum survey time is 50 hours on one charge (more if using
Duracells) for non-GPS surveys, and 30 hours for GPS survey. At a maximum of
6 hours per day survey this will give 8 days and 5 days respectively.
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