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TECHNICAL MANUAL
UNDERWATER ACOUSTIC BEACON
MODEL DK120/90
NOV 02, 2015
REV C
DUKANE SEACOM, INC. SARASOTA, FLORIDA 34243
PHONE: 941-739-3200
FAX: 941-739-3201
DOCUMENT NO. 03-TM-0063 © DUKANE SEACOM, INC.
INTERNET: www.radiantpowercorp.com
03-TM-0063 REV C
Page 1 of 21
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Summary of Contents for Dukane Seacom DK120/90
- Page 1 TECHNICAL MANUAL UNDERWATER ACOUSTIC BEACON MODEL DK120/90 NOV 02, 2015 REV C DUKANE SEACOM, INC. SARASOTA, FLORIDA 34243 PHONE: 941-739-3200 FAX: 941-739-3201 DOCUMENT NO. 03-TM-0063 © DUKANE SEACOM, INC. INTERNET: www.radiantpowercorp.com 03-TM-0063 REV C Page 1 of 21...
- Page 2 This manual should be read in its entirety prior to any installation, operation, testing or maintenance of the DK120/90 Underwater Acoustic Beacons. The information contained in this manual is intended to assist with the installation, maintenance, and use of the model DK120/90 Underwater Acoustic Beacon when attached to an aviation data recorder.
- Page 3 2.3. SURVIVABILITY..............................7 2.4. ENVIRONMENTAL..........................7 2.5. MAINTENANCE..........................7 2.6. INSTALLATION PROCEDURES FOR THE DK120/90 AND THE N30A26 SERIES MOUNTING KIT............................8 2.7. INSTALLATION PROCEDURES FOR THE DK120/90 AND THE N30A21A MOUNT- ING KIT..................................9 SECTION III ..........................
- Page 4 8.1. BEACON SERVICE..........................20 8.2. BATTERY CHANGE/OVERHAUL.......................... 20 TABLE OF FIGURES Figure 1. DK120/90 Underwater Acoustic Beacon Installed in Mounting Kits ........5 Figure 2. Water Switch Location on Beacon .................... 5 Figure 3. N30A26 Series Mounting Kit Installation Details ..............8 Figure 4.
- Page 5 DK120/90 Underwater Acoustic Beacon, manufactured by Dukane Seacom, Inc., 7135 16th Street East, Suite 101, Sarasota, FL 34243 These beacons have been tested to, and meet, or exceed, all requirements of FAA TSO- C121b, ETSO-C121b, TSO-C142a and ETSO-C142a.
- Page 6 DK120/90 BEACON SPECIFICATIONS Operating Frequency........... 37.5 kHz ± 1 kHz Operating Depth............Surface to 20,000 feet (6096 meters) Pulse Length..............9.0 milliseconds Minimum Pulse Repetition Rate..........Not less than 0.9 Pulse/Sec Operating Life.............. 90 days (minimum) Battery Life In Beacon..........
- Page 7 DK120/90 ENVIRONMENTAL QUALIFICATION SUMMARY CONDITIONS SAE AS8045A TEST CONDITIONS 15 Cycles: Condensation Section 5.1 6hrs @ -9ºC 18hrs @ 35ºC and 95% RH DO-160G, Section 4.5, Category D2 Temperature Storage Section 5.2 DO-160G, Section 5, Category A Temperature Variation Section 5.3...
- Page 8 Maximum temperature must not ex- This section describes the installation of the beacon ceed 185°F (85°C). mounting kits and the installation of the DK120/90 beacon into these mounts. 2.4.3. Inadvertent actuation of the water switch by any source of water, such as rain, salt spray, melting ice or 2.2.
- Page 9 NOTE 2.6. INSTALLATION PROCEDURES FOR THE DK120/90 AND THE N30A26 SERIES The mounting bracket can be used as a template MOUNTING KIT. to mark for drilling the holes prior to the instal- lation of beacon. Always remove beacon from 2.6.1. GENERAL. Model N30A26 Series Mounting mount prior to marking or drilling.
- Page 10 F. Perform the Operational Test outlined in Section Figure 5. Mounting Hole Template 2.7. INSTALLATION PROCEDURES FOR THE for N30A21A Mounting Kit DK120/90 AND THE N30A21A MOUNTING KIT. C. Test the beacon as outlined in Section IV to in- sure operation prior to installation.
- Page 11 If vertical mounting is employed, the switch end should be facing downwards to reduce the accu- mulation of dirt, grease, and water on the switch end. Rotate the beacon in the mount, so that the markings and beacon replacement date label can be read.
- Page 12 SECTION III OPERATION 3.1. THEORY OF OPERATION. 3.1.1. The DK120/90 beacon is a battery operated underwater acoustic pulse generator that is activated when the water switch is immersed in either fresh or salt water. 3.1.2. The water switch is part of a triggering circuit, Figure 9.
- Page 13 SECTION IV TESTING 4.1. GENERAL. The DK120/90 beacon should be tested before and after installation in the mounting kit and at recom- mended maintenance intervals. See Sections IV and 4.2. BATTERY TESTING. Use a high impedance voltmeter (input impedance of 10 M ohms) (not required when using the TS200...
- Page 14 ABOVE 85° C, OR EXPOSE CONTENTS TO WATER. REMOVE WHEN DISCHARGED . 5.4. PRECAUTIONS. AMOUNT OF LITHIUM IN BATTERY. 5.4.1. The DK120/90 Beacon must not be exposed to 1.7 grams. temperatures in excess of 185°F (85°C). 03-TM-0063 REV C Page 14 of 21...
- Page 15 LOW WATER LEAKAGE THROUGH THE O-RING SEAL. SCRATCHES OR NOTE GOUGES ON SEALING SURFACES WILL ALSO CAUSE WATER LEAK- AGE. Replacement of the battery in the DK120/90 beacon must be done by a qualified technician. 03-TM-0063 REV C Page 15 of 21...
- Page 16 REQUIRED BATTERY KIT battery are provided in battery replacement kit. See Fig- ure 13 for battery kit number. Replacement battery kits can be purchased from Dukane Seacom or authorized 81 0 - 2042/K dealer. I. Install new battery. Be sure the end marked “INSERT THIS END FIRST “...
- Page 17 WARNING J. Perform OFF-CURRENT TEST as outlined in Sec- REPLACE BATTERY WITH AUTHORIZED tion 5.7. REPLACEMENT PARTS ONLY. USE OF K. Position rubber shock cushion around contact spring AN UNAUTHORIZED BATTERY WILL and on the inside of the battery cover. VOID THE WARRANTY AND MAY CAUSE INOPERATIVE DANGEROUS...
- Page 18 WARNING DO NOT RECHARGE, DISASSEMBLE, HEAT ABOVE 185°F (85°C) OR INCINERATE. THERE IS A RISK OF BATTERY FIRE, EXPLOSION, AND BURNS. 5.8. BATTERY DISPOSAL. Dispose of battery in accordance with all local, state and federal regulations. Dispose of / or recycle batter- Figure 15.
- Page 19 -ment that affect the appearance or operation of products; (iv) any product where the customer has at- tempted any repair or service of the internal components. Dukane Seacom, Inc. liability under this warranty is limited to repair or replacement of a unit or battery that is defective.
- Page 20 Notes: 1. See Section VIII for information about how to return the beacon to Dukane Seacom, Inc. for service. 2. Call Dukane Seacom, Inc. or authorized dealer for appropriate service charges or further information about the Service Program.
- Page 21 D. Purchase Order (if required) for Beacon Replacement. 8.2.2. PROCEDURE-CUSTOMER. A. Contact Dukane Seacom, Inc. or Seal Dynamics for a 8.1.3. RETURN AUTHORIZATION. Prior to Return Authorization Number. Provide the following in- shipping the beacon, a Return Authorization Num-...
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