Operation Manual

Getting started
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850-165186 / Rev.B
Rip: Check for damages!
The Rip sensor is identical to the Catch sensor, and can thus be
regarded as a application for the Catch sensor. Place the sensor
on the trawl belly behind the footrope, and use it to detect if the
trawl is torn or in any other ways damaged by rocks or other
roughness on the bottom. If this is detected immediately you can
adjust the gear to minimise the damage.
Spread and Remote: Check the trawl doors!
This dynamic duo tells you the exact distance between the trawl
doors. Used on bottom and pelagic trawls the Spread and
Remote sensors provide crucial information about your trawl
behaviour. On a twin trawl, simply add a Remote sensor and
you have both openings covered!
These two sensors always work in pairs. They are used to
monitor the physical distance between the trawl doors during
bottom and pelagic trawling.
Use a Spread sensor on the port door and a Remote sensor on
the starboard door. Both sensors are normally mounted in
special adapters, but you may also attached them to the
wing-end or warp using snap hooks or rope.
The Spread sensor communicates with the Remote sensor using
a special transverse communication link. By means of this link it
measures the excact distance (maximum 350 meters) between
the two sensors. The information is is transmitted to the vessel
by the Spread sensor.
As you already know, correct door spread is important in order
to obtain the correct sweep-angle, as this ensures optimal trawl
performance. Door behavior and stability during shooting and
towing is also monitored by these sensors. Many regard this pair
of sensors one of the most important sensors to obtain efficient
trawling.
A special version of the PI Spread sensor, The PI Twin Spread,
allows you to use a single Spread sensor with two Remote
sensors to monitor a twin trawl.
Temperature: Too warm or too cold water?
Fishingintoowarmortoocoldwatermaybejustawasteof
time and money. The same applies to a pelagic trawl placed on
the wrong side of a thermal layer. Using advanced technology,
rugged construction and awardwinning design, the PI
Temperature sensor allows you to increase your fishing
efficiency.
The PI Temperature sensor tells you the exact sea water
temperature while you are fishing.