Operation Manual

References

211

850-165186 / Rev.B

Sensor alarms

These settings are used to set up the PI54 parameters related to

sensor alarms.

To access the parameters, press the MENU button to open the

main menu. Then, open the Setup menu, and select Sensor

alarm/calibration .

Each sensor has an individual alarm setting, and you can also

trigger alarms to warn you about sudden temperature changes

and shallow water. Whenever an alarm is triggered an audible

signal is pr ovided, and a message on the display presents the

cause of the alarm. Unless the reason for the alarm is corrected,

or the alarm disabled, it will sound again after 20 seconds.

Due to the amount of choices available for the PI 54, the alarm

parameters are organized in three dialogues.

• Sensor alarm: This dialogue allows you to defined alar ms

related to the inform ation provided by the sensors.

• Surface temperature: This dialogue allows you to set up

alarms to warn you about surface temperatures, and to

indicate sudden temperature changes.

• Clearance: This dialogue allows you to define alarms to

monitor if a trawl or towed object comes too close or too far

off the bottom.

The Sensor alarm/calibration choice on the Setup menu also

allows you to define parameters for depth calibration and offset.

These are explained separately.

Topics

→ Sensor alarms, page 212

→ Surface temperature alarms, page 213

→ Clearance alarm, page 214