SMALL DOOR SPREAD SENSORS SS (STUBBIE)
Marport’s multifunction XL-DD ‘Small Frame’ trawl door sensors have all the functionality of larger sensors
Designed to meet the needs of smaller trawlers towing semi-pelagic gear or flying their doors off the bottom, and using gear on which space is at a premium, Marport’s multi-function XL-DD ‘Smal Frame’ trawl door sensors have all the functionality of larger sensors, operating with a master and slave arrangement. The master sensor sends both sets of data to the catching vessel’s wheelhouse, with update rates of as fast as every three seconds, providing the skipper with door spread, inward/outward heel, forward/aft tilt, depth and temperature data.
The master and slave sensors communicate via a 110 or 144kHz wireless link, with the option of a 30,8kHz frequency used in special applications in gear and fisheries research.
MFX trawl door sensors are essential for keeping the gear correctly aligned, particularly working semi-pelagic or pelagic gear in which precision is critical to controlling the fishing gear and optimizing fishing opportunities, ensuring that the gear geometry is maintained and providing early warning if there is a problem with the trawl, which in turn allows skipper to compensate or haul and fix the problem without wasting time and fuel.
Battery life is typically around 90 hours, based on a standard charging time of 8 to 12 hours, although endurance can be extended by using power-saving settings.
|Uplink Frequency||30 to 60 kHz|
|Range to Vessel||2500m|
|Pitch & Roll (Angle)||±90o|
|Pitch & Roll (Accuracy)||0.1o|
|Depth Resolution||0.1m with 0.1% accuracy|
|Update Rate||Depth:3-8 sec
|Temp Measurement Range||-5oC to +25oC|
|Typical Battery Life||Up to 100 hours Master|
|Charging Time||Standard: 8-12 hours
Fast Charge: 4 hours
|Weight in Air||5.0 kg|
|Weight in Water||0.9 kg|
|Warranty||2 years (Sensor & Battery)|