Simrad PI BOTTOM CONTACT - DATASHEET REV A User manual

CATCH MONITORING
PI Bottom Contact sensor
MAXIMIZING YOUR PERFORMANCE AT SEA
www.simrad.com
Best at the bottom!
With patented technology and awardwinning design, Simrad
provides you full control of the actions that take place at the
bottom. Mounted on a bottom trawl, pelagic trawl or purse seine,
this sensor will provide the important information when you need
it!
The Bottom Contact sensor mounted on a bottom trawl will let you
know once the trawl lifts a few centimeters above the bottom. You
can then immediatley perform the necessary adjustments, and you
will not loose any catch.
On a purse seine you will be
notified once the seine reaches
the bottom, and you can thus
fish even on a rough bottom.
On a pleqgic trawl, the sensor
will notify you once you get
near the bottom.

Applications
(855-165189 / Rev.A / April 2005)
The Bottom Contact sensor will let you
know immediately if your gear touches
the bottom.
• Bottow trawl: If your trawl lifts off the bottom,
this may cause fish to escape, and hence reduce the
catch. This sensor will detect this, and allow you to
trim your equipment for perfect balance.
• Pelagic trawl: On a pelagic trawl, this sensor
proves very useful when the trawl moves
downwards. It will let you know immediately if the
footrope touches bottom.
• Purse seine: When you work with a purse seine,
you need to know when the seine reaches the
bottom. This sensor will let you know. once it
happens.
• Danish seine: Used on a Danish seine, the sensor
will let you know when the net has a stable bottom
contact, and when it is time to haul.
• Scientific research: During scientific surveys,
an exact definition of towed distance with proper
ground gear contact is an essential parameter
in bottom trawl swept area estimates of fish
Specifications
PI Systems: PI32, PI44 or PI54
Update rates:
• Fast: Every 3,2 second (approx.)
• Normal: Every 5,3 second (approx.)
• Slow: Every 33 second (approx.)
Default update rate: Normal
Lifetime between each recharge:
• Fast update rate: 26 hours
• Normal update rate: 40 hours
• Slow update rate: 175 hours
Communication frequency range: 43,5 to 49,5 kHz
Physical properties:
• Length: 246 mm
• Width: 171 mm
• Thickness: 123 mm
• Weight in air: 4,6 kg (w/o chain & ground weight)
Charging time with PI Charger:
• To 70% capacity: 1 hour
• To 100% capacity: 4 hours
Charging time with PS Charger:
• To 100% capacity: 16 hours
Specifications can be altered without prior notification.
Simrad Horten AS
Strandpromenaden 50
P.O.Box 111
NO-3191 Horten
Norway
Telephone: [phone]
Facsimile: [phone]
MAXIMIZING YOUR PERFORMANCE AT SEA
www.simrad.com