Operation Manual

System description

850-165186 / Rev.B

Sensor overview

This chapter provides a very short description of each sensor.

• Depth sensor - The Depth sensor provide information about

the current depth as well as the descending or ascending rate

related to the surface.

• Catch sensor - The Catch sensor provides information about

the amount of catch in the trawl. The sensor monitors the

opening of the meshes in the cod-end, and will activate once

the caught volume pulls the detector wire. To monitor the

filling rate, you are adviced to use minimum two sensors.

• Bottom Contact sensor - The Bottom Contact sensors

detects if a trawl is accidentally lifted off the seabed, or a

purse seine is touching the bottom.

• Rip sensor - The Rip sensor provides an immediate warning

when the net is ripped.

• Temperature sensor - Temperature sensors read and transmit

the ambient water temperature at the gear depth.

• Height sensor - The Height sensor contains s small echo

sounder to measure the current depth related to the seabed.

• Spread & Remote sensor - These sensor always work in

pairs, and they measure the distance betwen the trawl doors.

You can also use two Remote sensors if you run a twin trawl.

The use of separate communication channels for the individual

sensors allows you to use your sensors in the vincinity of other

vessels using PI or PS sensors. The communication channels can

be defined and/or changed onboard your vessel using a standard

computer and the P I Configurator utility.