2-11
2
CFT-780 Transducer
The transducer is a highly refined product, containing piezoelectric sensor elements facing the
water and containing some matching circuits to achieve good matching to the cable (30 m of
cable is supplied as standard, option 40m).
122,00 mm
Transducer direction in centerline
( Front view of transducer head )
207,51 mm
of ship, facing forward
As seen, the transducer elements are clearly divided into the five SOG elements and the two
STW elements in a separate casing.
Electrically, each sensor element is connected via a matching transformer to a separately
shielded twisted pair. For transmission with the low frequency SOG part, a separate transmit
cable pair is used, that connects the signal to the three transducer elements used for
transmission.
The positioning of the transducer is very important. The water flow below the transducer must
not be turbulent or affected by skew water flows. Turbulent flow gives no common signal
between the two STW channels.
Содержание JLN-900
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Страница 17: ...2 1 JLN 900 Technical Description ...
Страница 23: ...2 7 sigbel ...
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Страница 31: ...3 1 JLN 900 Technical Specification ...
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Страница 39: ...4 1 JLN 900 Installation of Transducer and Bottom Parts ...
Страница 49: ...4 11 Overall dimensions of the final installation is shown in Fig 1 2 Fig 1 2 MSSBSV H Main dimensions ...
Страница 59: ...4 21 Transducer and Valve Cover mounted Sea Valve fully opened ...
Страница 63: ...4 25 Fig 1 3 Aligning Transducer Connecting Tube ...
Страница 66: ...4 28 Overall dimensions of the final installation is shown in below Fig 2 2 Fig 2 2 MSDBSV H Main dimensions ...
Страница 76: ...4 38 Mounting Sea Valve on Upper Flange DB ...
Страница 81: ...4 43 Gasket Seal 2 ...
Страница 83: ...4 45 Transducer and Valve Cover mounted Sea Valve fully opened ...
Страница 86: ...4 48 Tube Bracket in its final position with Transducer flush seated ...
Страница 88: ...4 50 Fig 2 5 Aligning Transducer Connecting Tube ...
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Страница 93: ...5 1 JLN 900 Installation of NJC 80 Sig Processor ...
Страница 101: ...6 1 JLN 900 NQA 4480 Sig Distributor Technical Manual Incl installation setting up and maintenance guidelines ...
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Страница 151: ...7 1 JLN 900 Display Technical Description ...
Страница 167: ...7 17 No Name Default setting Function SD 4 2 SD 4 3 SD 4 4 there are remote systems connected ...
Страница 179: ...8 1 JLN 900 Analog Display Technical Manual ...
Страница 183: ...8 5 2 1 Main Dimensions NWW 828 Analog Display ...
Страница 184: ...8 6 2 2 Dimmer Potentiometer connection Analog Display ...
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Страница 187: ...9 1 JLN 900 Menu System ...
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Страница 209: ...10 1 JLN 900 WATER TRACK Technical Manual including Menu system ...
Страница 233: ...11 1 JLN 900 IEC 61162 NMEA 0183 User Guide ...
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Страница 255: ...12 1 JLN 900 Harbour Acceptance Test ...
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Страница 267: ...13 1 JLN 900 Calibration and Sea Acceptance Test ...
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Страница 281: ...JLN 900 system drawings 14 1 ...
Страница 289: ...CFT 780 4 TRANSDUCER 40m 14 9 ...
Страница 290: ...NKF 980 Sea Valve 14 10 ...
Страница 291: ...NKF 980 Sea Valve 14 11 ...
Страница 292: ...NWW 82 MAIN DISPLAY 14 12 ...
Страница 293: ...DISPLAY 3 1 87 14 13 ...
Страница 294: ...NCM 1080 DIMMER UNIT 14 14 ...
Страница 295: ...15 1 JLN 900 Description labels and drawings ...
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Страница 301: ...16 1 Annex JLN 900 Speed Log System Manual ...
Страница 302: ...16 2 Annex Table of contents ANNEX I EQUIPMENT RECYCLING 3 ANNEX II ENERGY SAVING 5 ...
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