Skipper DL850 - Sensor (Transducer); Transceiver Unit

Edition: 2017-09-25
Page 8 of 92
Chapter: Terminology
Three beam transducer (270 kHz)
a b
3 dimensional view Seen from above
Five beam transducer (540 kHz)
a b
3 dimensional view Seen from above
(Transversal)
B1
B1
B2
B2
B3
B3
120
o
240
o
(Transversal)
B1
B1
B3
B3
B4
B2
90
o
180
o
B4
270
o
B5
B2
B5
(Longitudinal)
(Longitudinal)
(Fore)
(Aft)
(Starboard)
(Port)
(Starboard)
(Port)
(Fore)
(Aft)
Sensor (Transducer)
The Doppler sensor consists of a head with 3 hydro-acoustic elements. The elements are transmitting/
receiving acoustic signals at 270kHz. Out of the received doppler shifted frequencies it is possible to
calculate the speed in 2 axis. The sensor is connected to a transceiver cabinet located within 40 m of the
sensor.
Transceiver unit
The connection from the transceiver cabinet to the operator unit is via a serial RS-422 data link and may
be up to 1000 m. Transceiver and operator unit power supply options are 115/230 V AC or 24 V DC. The
power consumption for the transceiver unit is app. 80 Watt at 115/230 V AC or 60 Watt at 24 V DC.
SKIPPER Electronics AS
Operation and Installation DL850 270 kHz