Fisher Labs TW-8800 Operating Manual

Fisher Labs TW-8800 Operating Manual

Multi-frequency digital line tracer

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Q U A L I T Y
Fisher detectors are renowned for their quality.
Each detector is hand crafted in the USA with pride
P E R F O R M A N C E
The worldwide underground utility industry relys on Fisher.
Our instruments are durable, dependable, and locate deeper.
R E P U T A T I O N
Fisher produced the first patented metal detector in 1931. For
over 70 years, the Fisher logo has been a mark of excellence.
2 - YEAR LIMITED WARRANTY
Fisher believes in the products we produce and backs this belief
with a 2 year limited warranty.
Proof of purchase is required to make a claim under this warranty.
NOTE TO CUSTOMERS OUTSIDE THE U.S.A.
This warranty may vary in other countries, check with your distributor for details.
Factory warranty follows the channel of distribution.
Warranty does not cover shipping costs.
According to FCC part 15.21 Changes or Modifications made to this device
not expressly approved by the party responsible for compliance could void
the users authority to operate this equipment.
S E R V I C E
Fisher is committed to providing you, our valued customer, with
superior service. Each and every instrument is rigidly tested
and carefully inspected during assembly and before shipment.
Should you have any questions or problems, contact:
FISHER RESEARCH LABORATORY
1465-H Henry Brennan,
El Paso, Texas 79936
Tel 915.225.0333 Fax 915.225.0336
www.fisherlab.com email:info@fisherlab.com
8708001
F I S H E R
04-08-10
TW-8800
Multi-Frequency Digital Line Tracer
Operating Manual
R E S E A R C H
L A B O R A T O R Y

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Summary of Contents for Fisher Labs TW-8800

  • Page 1: Year Limited Warranty

    Q U A L I T Y TW-8800 Fisher detectors are renowned for their quality. Each detector is hand crafted in the USA with pride Multi-Frequency Digital Line Tracer P E R F O R M A N C E The worldwide underground utility industry relys on Fisher.
  • Page 2 NOTES CONTENTS Description .................pg. 3 Transmitter .................pg. 5 Receiver ..................pg. 6 Accessories ................pg. 8 Operating Instructions ..............pg. 9 Depth Accuracy ...............pg. 12 Specifications ................pg. 13 Using Headphones ..............pg. 14 Treasure Hunter Code of Ethics ..........pg. 14...
  • Page 3 It also allows you to hear subtle changes in the sound more an operators manual. The TW-8800 has both active and passive clearly, particularly if searching in a noisy location. For safety locating features.
  • Page 4: Specifications

    Battery Test ....... Automatic Low Battery alert Push button readout The features of the TW-8800 make it a very versatile Battery Type ......Six “C” cells and practical instrument in today’s world of under- ground locating.
  • Page 5 DEPTH ACCURACY TW-8800 TRANSMITTER Depth measurement is a feature of the TW-8800. Accuracy is defined on an ideal target; that is, one that is continuous, a good Transmitter conductor, and not surrounded by other utilities. There are several Located on the transmitter are the power mode and factors that can cause the operator to question the accuracy of the frequency selector.
  • Page 6 TW-8800 RECEIVER OPERATING INSTRUCTIONS Tracing Receiver After locating the point(s) where the signal strength was the highest, return to that spot and start tracing your utility. This is where the LEFT/RIGHT indicator is very helpful. Swing the Receiver from left to right and listen for the change of tone.
  • Page 7 OPERATING INSTRUCTIONS TW-8800 RECEIVER 8.2 kHz A very versatile frequency. Can be used both conductively and inductively. Can be used on continuous utilities – wire or pipe. The signal has a better chance of not inducing onto nearby utilities. This frequency may work better if the utility is grounded.
  • Page 8 3-¼ inches in diameter or smaller. The length of the cable is approximately 10 feet. The TW-8800 gives the operator many tools in one easy to use package. The following information can serve as guidelines to Coupling Clamp Applications Diagram assist the operator in using the TW-8800.

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