Operational procedures
97
850-165085 / Rev.B
1
Press the
MENU
button to access the main menu.
2
On the
Setup
menu, select
Sensor alarm/calibration
.
- Observe that the
Sensor alarm
dialogue opens. In this
dialogue, only the sensors currently activated are
shown. Each of them provide various alarm functions.
3
Select minimum and/or maximum limits for the individual
sensors, and activate each alarm separately.
4
Press the
ENT
key to store the parameters and exit.
Note that the Catch, Rip and Bottom Contact sensors can only
provide alarms when they are activated, that is when their
detector wires have been pulled tight.
Surface temperature alarm
The surface temperature alarm provide you with an audible and
visual warning if the temperature exceeds predefined limits, or
if it changes too fast.
1
Press the
MENU
button to access the main menu.
2
On the
Setup
menu, select
Sensor alarm/calibration
.
- Observe that the
Sensor alarm
dialogue opens.
3
Press the
GAIN+
button repeatedly until the
Surface
temperature
dialogue appears.
4
Select minimum and/or maximum temperature limits for
the alarms, and activate each alarm separately.
5
Enter the appropriate value for the
Shear alarm
, and
activate the alarm.
6
Press the
ENT
key to store the parameters and exit.
The
Shear alarm
will be triggered if the temperature changes
faster per minute than the value you have entered.
Note:
In order to enable these alarms, your PI44 must have the
relevant temperature feeler fitted!
Clearance alarms
The clearance alarm provide you with an audible and visual
warning if a trawl or another towed object either moves too
close to the bottom, or lifts too far off the bottom.
1
Verify that the echo sounder is operational.
2
Press the
MENU
button to access the main menu.
3
On the
Setup
menu, select
Sensor alarm/calibration
.
- Observe that the
Sensor alarm
dialogue opens.
