Sensors
161
850-165085 / Rev.B
Temperature presentation
On the PI44 display, the temperature is displayed in the numeric
display. If the temperature is falling or rising, this is shown with
an arrow. When the readings are stable, the digits are shown in
black colour. When the values are predicted, the digits are grey,
and if the contact with the sensor is lost, the characters *.* * are
shown in grey.
(A) = Sensor set up as sensor no.2.
(B) = Current temperature.
(C) = Denomination (Celcius or
Fahrenheit)
(D) = Temperature change. This
arrow indicates that the temperature
is rising.
(E) = Graphic alarm
(F) = Indicator, lit for every sensor interrogation.
(G) = Interference symbol.
Sensor configuration
On delivery, all temperature sensors are configured in
Channel 8
and with
Fast
update rate. It is not possible to change the update
rate setting. If you use more than one sensor, you must set them
up to operate in different channels.
Note:
The sensor and the PI44 system setup must correspond,
otherwise the communication will not work.
To change the sensor setup (channel selection), use the
PI
Configurator
utility.
The sensor update rate controls how often the temperature is
measured, and the data transmitted to the vessel. To be able to
monitor fast changes in the sea temperature, the sensor will only
operate on
Fast
update rate.
System configuration
Sensor configuration:
The sensor must be configured with a
unique sensor number. Select channel number according to the
sensor’s configuration. Write down the configuration for future
reference.
Status & Receiver:
The Interference filter must be switched on.
Set it to level 9 if you have noise problems from other
hydroacoustic sources. Note that with the filter on, it will
influence the signal spectrum shown in the
Status display
.
Sensor filter:
Switch this filter to
Light
. Set it to
Heavy
only if
you experience excessive noise. Position
Off
will provide raw
data and fastest possible response.
