Operational procedures
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How to calibrate the Depth sensor
Only the Depth sensor can be calibrated. The purpose is to
ensure that the depth reported by the sensor is as accurate as
possible.
This procedure is carried out onboard the vessel.
1
Mount a rope to the top fastening lugs on the sensor.
2
Tighten the rope, and measure one meter from the bottom
of the sensor to a spot on the rope. Place a visual marker
on the rope at that location.
3
Lower the sensor over the side of the vessel and into the
water. Lower it until the visual marker on the rope is even
with the surface.
4
On the PI32, observe the numerical presentation of the
sensor, and allow the reading to stabilize itself.
5
On the PI32, press the
MENU
button to open the
Main
menu
.
6
Open the
Setup
menu, and select
Sensor
alarm/calibration
.
7
At the bottom of the page, set
Depth sensor calibration
to
YES
.
8
Leave the sensor hanging from the rope for minimum two
minutes. Meanwhile, observe that the numerical
presentation shows grey characters only.
9
On the PI32, observe that the numerical presentation of
the Depth sensor is stable, and shows 1 meter.
10
Retrieve the sensor from the water.
Note:
In order to calibrate the sensor, it must be submerged in salt
water.
You may wish to use a different depth reference than the sea
surface. If this is the case, change the marking on the rope to fit
you preference, for example the depth of the keel or the depth of
an echo sounder transducer.
Related topics
→
How to define sensor offsets, page 56
→
Depth calibration, setup, page 153