User manual SIMRAD PI32 BOTTOM SENSOR MOUNTING REV B
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SIMRAD PI32 BOTTOM SENSOR MOUNTING REV B (525 ko)
Manual abstract: user guide SIMRAD PI32 BOTTOM SENSORMOUNTING REV B
Detailed instructions for use are in the User's Guide.
[. . . ] PI32 Bottom sensor attachment
To attach a PI32 Bottom sensor: 1. ) Locate the middle of the footrope and bend the attachment ring for the stay to the "bottom" and two strops attached to karabiners on either side to its "top". [. . . ] IMPORTANT: Carefully attach the sensor to the inside of the trawl so that it is not subject to damage or torn off during fishing operations. The sensor's feeler strap must always be allowed to pass freely through the centre of the penetration ring when it is deployed.
Rock hopper, bobbins, etc. Attachment ring for the stay bent securely to the "bottom"of the footrope. If the bottom sensor is attached to the wings, the length of the lashings must be adjusted so that the sensor points toward the mother vessel when towed.
Note 1
Lift Off
Note 1
Feeler strap Detection chain Rock hopper Stay End link
Touch Down
30 cm
Bottom Penetration ring for the feeler strap. Weight and stay hang freely under the trawl.
Weight
Note 1: The stay can also be attached to the steel spacer between the bobbins/rock hopper if the footrope is held fairly stable relative to the gear.
Contact - bottom sensors can detect bottom contact with a precision of just a few centimeters when correct stay and detection chain lengths are used. Optimal sensor performance requires that these lengths are configured with regard to both each other and the gear in use (the standard delivery includes a 63 cm stay and 39 cm detection chain for use with 14 to 16 inch bobbins or rock hoppers). Configuration - the desired bottom detection distance is relative to the diameter of the rock hoppers, bobbins or other gear in use. This relationship can be determined and precise stay and detection chain length adjustments made as described below. [. . . ] Avoid extra links at the weight ends when shorting chains.
(851-164641B)
IMPORTANT: Weights must be removed from a bottom sensors with a long stays and detection chains before they transit the drum when hauling to prevent damage. [. . . ]
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