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RJE ULB-350 Series Technical Manual
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RJE ULB-350 Series Technical Manual

Underwater acoustic beacon
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RJE International, Inc.
Irvine, California
TECHNICAL MANUAL
ULB-350 SERIES
UNDERWATER ACOUSTIC BEACON
August 1, 2002
REV 00
RJE International, Inc.
15375 Barranca Pkwy, Suite B107,
Irvine, California 92618
Tel: (949) 727-9399 Fax: (949) 727-0070
E-mail: sales@rjeint.com Web Page: www.rjeint.com
DOCUMENT NO. 03-TM-0046
03-TM-0046
Page 1 of 13

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  • Page 1 RJE International, Inc. Irvine, California TECHNICAL MANUAL ULB-350 SERIES UNDERWATER ACOUSTIC BEACON August 1, 2002 REV 00 RJE International, Inc. 15375 Barranca Pkwy, Suite B107, Irvine, California 92618 Tel: (949) 727-9399 Fax: (949) 727-0070 E-mail: sales@rjeint.com Web Page: www.rjeint.com DOCUMENT NO. 03-TM-0046...
  • Page 2 This manual should be read in its entirety prior to using the ULB-350 Series 03-TM-0046 Page 2 of 13...
  • Page 3 INTRODUCTION 1.1. GENERAL. This manual contains the description, operation, theory and maintenance procedures for the Underwater Acoustic Beacon Model ULB-350 Series, hereafter referred in this manual as the Model ULB-350. 1.1.1. The ULB-350 is a water switch activated underwater locating device designed for use in marking applications.
  • Page 4 TABLE 1. ULB-350 ACOUSTIC BEACON SPECIFICATIONS Operating Frequency ..... 27 or 37kHz ± 1kHz Operating ........Depth Surface to 4,000 feet (1216 meters) Pulse Length ........10 milliseconds ± 10% Pulse Repetition Rate ....Not less than 0.9 Pulses/Sec Operating Life ......... 20 Days (minimum) Acoustic Output ......

  • Page 5: Section Ii Beacon Maintenance

    SECTION II BEACON MAINTENANCE 2.1. BEACON TESTING. The beacon should be tested prior to each use. 2.1.1. Using the 42A12 Series Ultrasonic Test Sets, test the bea- con in the following manner: 2.1.2. Turn the GAIN control to a fully clockwise position. A pronounced background noise should be present.

  • Page 6: Section Ii Maintenance

    SECTION II MAINTENANCE 2.2. GENERAL. This section describes beacon cleaning, disassem- bly, O-ring replacement, battery replacement and battery testing. 2.3. BEACON CLEANING. Clean the switch end of the beacon with mild detergent then dry thoroughly with a clean cloth. 2.4. BEACON DISASSEMBLY. Disassembly of the beacon is limited to battery replacement, as outlined in Section 2.5.
  • Page 7 FIGURE 2. BATTERY END CAP REMOVAL 2.5.2. PROCEDURE. To replace the battery, remove battery end cap from beacon as follows: 2.5.3. Remove the three brass 4-40 machine screws from the battey end cap. Lift that battery end cap to access the battery. 2.5.4.
  • Page 8 FIGURE 3. BEACON EXPLODED VIEW SHOWING RELATIVE LOCATION OF BATTERY AND RELATED PARTS 2.5.5. Check O-ring for ware or damage. If it is necessary to replace O-ring. remove the old O-ring from the battery end cap. Do not use steel screwdriver or sharp tool because of danger to damaging O-ring groove .
  • Page 9 Step 1 - Get a Return Authorization The best way to make sure RJE is aware of your intentions to ship equipment is to obtain a Return Material Authorization (RMA) before sending the shipment. Return Material Authorizations are...
  • Page 10 Step 3 - Update RJE International Send the following information by fax or telephone to RJE. Attention: Sales Administration Fax: (949) 727-0070 Phone: (949) 727-9399 • Detailed descriptions of what you are shipping (number of packages, sizes, weights, and contents).

  • Page 11: Section Iii Warranty

    RJE International shall not be liable for any expense or damages resulting from interruptions in the operation of the unit. RJE International shall not be liable for the cost of any repairs undertaken by the customer or any third party without RJE International prior written authoriza- tion.
  • Page 12 APPENDIX A ULB-350/TD A.1. GENERAL. The ULB-350/TD is configured with the time delay option that is factory set. This configuration will delay the normal underwater operation of the beacon based on the time set at the factory (ie.., 8, 16, or 32 minutes). A.2.