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Fisher Research Labs TW-82 Operating Manual

Digital line tracer
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TW-82
DIGITAL LINE TRACER
Operating Manual

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Summary of Contents for Fisher Research Labs TW-82

  • Page 1 TW-82 DIGITAL LINE TRACER Operating Manual...

  • Page 2: Table Of Contents

    CONTENTS Introduction ............... 3 Transmitter ..............4-6 Receiver ................. 7-13 Power-On ..............7 Lateral Mode ............8-10 Unit Of Measure ............11 Display ..............11-13 Auto Power-Down ............. 13 Specifications ..............14 Warranty ................15 Accessories ............Back page...

  • Page 3: Introduction

    Transmitter, Receiver, ground-rod assembly, carrying case (soft or optional hard case) and an operator’s manual. The TW-82 is an active single-frequency line tracer that is used to locate and trace buried utilities using any of the following three tracing methods: 1.

  • Page 4: Transmitter

    TW-82 TRANSMITTER TW-82 Transmitter The Transmitter has two controls: & Button has a dual function: 1. When the Transmitter is powered on, switches the device between normal (1/4 watt) and high (1.0 watt) output. 2. With the Transmitter powered off: A.
  • Page 5 TW-82 TRANSMITTER Low Battery Power-Down Warning When the Transmitter batteries are near the end of their useful life, the Transmitter will warn the operator before shutting down. Five minutes before shutting down, the Transmitter will alternately stop and start transmitting at approximately one- second intervals.

  • Page 6: Inductive Locating

    TW-82 TRANSMITTER INDUCTIVE LOCATING Inductive locating is most effective with the Transmitter straddling the utility as illustrated, with the utility perpendicular to the Transmitter’s batteries. If the utility direction is unknown, place Transmitter on the ground, power on, and sweep the Receiver a complete 360º...

  • Page 7: Receiver

    TW-82 RECEIVER TW-82 Receiver 2-BUTTON OPERATION BUTTON • Power-Up: Press Button to turn ON • Volume Control: Tap the Button to adjust volume 1. Mute 2. Low 3. Medium 4. High Continued presses of the button cycles back to setting #1.

  • Page 8: Lateral Mode

    TW-82 RECEIVER 2-Button Operation - Continued BUTTON • Press to enter Lateral-Tracing Mode. • Press again to exit Lateral-Tracing Mode. While in LATERAL Mode, press-and-hold to program: • To exit Lateral programming, press-and-hold again. • To set the upper limit of the signal range, press...
  • Page 9 TW-82 RECEIVER Button - Continued When conducting a trace of the Lateral line, select LATERAL Mode and walk parallel to the main line (as in the illustration below). You must use Lateral Mode in this situation because in the Regular Mode, you may detect the signal from the main line all of the way up to the house, even with the blade of the Receiver parallel to the main line.

  • Page 10: Mode Programming

    TW-82 RECEIVER 2-Button Operation - Continued TRACING OPERATION While tracing a line using the Lateral Mode, the display will appear as illustrated below. The SIGNAL number indicates the strength of the field emitted by the buried line. The buried line is located at the spot when the maximum SIGNAL number is indicated.

  • Page 11: Unit Of Measure

    TW-82 RECEIVER METRIC / IMPERIAL UNIT OF MEASURE To change the Receiver unit of measure, follow this procedure: 1. Start with the Receiver OFF. 2. Press and Hold the Button for 10 seconds. The device will turn on; continue to hold Button the full 10 seconds.
  • Page 12 TW-82 RECEIVER Left/right & over-target - Continued Audio: When you move within a 45º angle of the center of the electromagnetic field, the audio pitch will change; the pitch increases as you approach the utility. Outside the 45º zone, the pitch does not change.

  • Page 13: Auto Power-Down

    TW-82 RECEIVER 6. Depth: Depth reading is only accurate if the electromagnetic field is depth perfectly round. The electromagnetic field must have enough energy for the device to accurately calculate the depth. The weaker the signal strength, the less reliable the depth indicator.

  • Page 14: Specifications

    SPECIFICATIONS RECEIVER Frequency ........82.175 kHz Standard Mode ......Automatic response Lateral Mode ........ Programmable Left/Right Guidance ..... Audible and visual Azimuth Indicator ......Visual Over-Target Indicator ....Visual and audible Battery Status ......Visual Signal Strength Indicator .... Numeric display & audible Signal Current Measurement ..

  • Page 15: Warranty

    85 years, the Fisher logo has been a mark of excellence. S E R V I C E Should you have any questions or problems, contact: FISHER RESEARCH LABS, INC. 1120 Alza Drive, El Paso, Texas 79907 Tel 1-800-685-5050 Fax 915-225-0336 www.fisherlab.com email: info@fisherlab.com...

  • Page 16: Accessories

    Hard Carry Case – 1802050000 Shock absorbent protective hard carrying case with contoured foam insert custom made to house the TW-82. 35” x 7” x 16” Fisher Sonde Signal Transmitter 82kHz – SONDE-82.175 Small transmitter used to trace the path of non-metallic pipes and locate blockage in lines.

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