Fisher TW6 Pipe & Cable Locator
Fisher TW6 Pipe & Cable Locator
Fisher TW6 Pipe & Cable Locator
Fisher TW6 Split Box Locator Kit with Hard Case, Strap, Ground Rod Assembly, Headphones, and 3-Piece Handle for Pipe and Cable Locating
Fisher TW6 Pipe & Cable Locator
Fisher: Since 1931

Fisher TW6 Pipe & Cable Locator

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Product Description

Designed for professionals in utility locating and damage prevention, the Fisher TW-6 is a versatile instrument for tracing buried pipes, cables, and other conductive utilities. Trusted worldwide, this rugged locator stands out with its dual-mode operation—inductive and conductive—allowing for pinpoint accuracy even in complex underground environments.


The TW-6 operates at 81.92 kHz and offers both normal and high sensitivity modes, making it effective across a variety of soil types and utility depths. Its inductive mode allows quick locating of unknown lines without direct contact, while the conductive mode enhances tracing precision in congested areas. Features like peak signal audio response, numerical signal strength display, and a level indicator for depth triangulation enable users to detect and mark with accuracy. With optional accessories like tracer probes and coupling clamps, the TW-6 adapts to a range of field scenarios including manhole and riser detection, or non-metallic pipe tracing using tape.


Built with a lightweight, ergonomic design, the TW-6 weighs just 5.5 lbs, including transmitter and receiver. It features simple controls, fast assembly, and a balanced handle for extended searches. Durable enough to withstand tough job sites, it runs up to 30 hours on standard AA batteries and comes backed by a 2-year limited warranty. For crews needing reliable, field-tested equipment, the TW-6 continues to be the go-to solution.


Purpose: Locating and tracing buried utility lines (e.g., water, gas, electric, telecom)

Specifications

Manufacturer: First Texas Products, LLC  

Brand Name: Fisher Research Labs  

Country of Origin: USA  

Warranty: 2 Years  

Operating Frequency: 81.92 kHz ± 0.005%  

Batteries: 8 AA (Receiver), 8 AA (Transmitter)  

Receiver Weight: 2.5 lbs (1.1 kg)  

Transmitter Weight: 3 lbs (1.36 kg)  

Total Weight: 5.5 lbs (2.5 kg, without accessories)  

Dimensions: 11.5" x 9" x 3" (29 x 23 x 7.6 cm)  

Operating Temperature: -10°F to +120°F (-23°C to +48°C)  

Sensitivity: Normal: 400 µV typical / High: 8 µV typical  

Signal-to-Noise Ratio: 110 dB  

Headset Impedance: 600 ohms (mono), 8 ohms (stereo)  

Shipping Weight: 6.75 lbs (3 kg)  

Shipping Volume: 69 cu. ft. (19.5 liters)  

Optional Accessories: Tracer Probe, Coupling Clamp, 3-Piece Handle Kit, Hard Carrying Case, Ground Rod/Harness Assembly, Stereo Headphones, Rechargeable Battery System 

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Manual

TW6

Support

For more information and to purchase, visit where to buy , email us , chat with us, or call us at 1-800-685-5050   for any questions.
For repair service in warranty or out of warranty please fill out the RMA form.

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Frequently Asked Questions

What is the optimal frequency for locating both shallow and deep utilities using the TW-6?

The TW-6 operates at a crystal-controlled 81.92 kHz, which offers a balance between depth penetration and resolution, making it ideal for both shallow and moderately deep utility locating.

How does the TW-6 differentiate between closely spaced conductors in congested areas?

Using the conductive mode with direct connection and ground rod placement near the connection point allows for a more concentrated signal and minimizes interference from adjacent lines.

What’s the advantage of using the “null” method over the “peak” method in extended-range tracing?

The null method provides sharper contrast and can help maintain trace accuracy when signal strength begins to fade at extended distances, especially in high power mode.

How do you determine the depth of a conductor using the TW-6?

By holding the receiver at a 45° angle using the level indicator and backing away until the signal nulls, you can measure the horizontal distance from that point to the conductor’s centerline to calculate depth.

Can the TW-6 locate utilities beneath conductive soil or asphalt?

Yes, but sensitivity may need to be adjusted downward due to increased coupling. In highly mineralized or damp soils, tuning with the handle lowered and recalibrating is essential.

What’s the minimum safe distance to avoid air coupling in inductive mode?

At NORMAL sensitivity, keep the transmitter and receiver at least 30 feet apart. At HIGH sensitivity, an even greater distance is required to avoid direct electromagnetic coupling through air.

Why does the TW-6 offer increasing pitch and volume beyond the peak meter reading?

The built-in Voltage Controlled Oscillator (VCO) continues to increase pitch and loudness after the signal meter maxes out, allowing fine-tuned audio feedback for more accurate locating.

What precautions should be taken when tuning the TW-6?

Always tune away from metal structures (cars, fences, reinforced walls) to avoid false balance. Ensure a clear “null” zone and adjust sensitivity to maintain less than ¼ turn of the front knob at balance.

Can the TW-6 trace non-metallic pipes?

Yes, when paired with tracer tape or a conductive fish-tape inserted into the pipe, the TW-6 can trace non-metallic lines using either inductive or conductive methods.

How does the tracer probe improve locating performance?

The tracer probe offers a narrower detection field and higher precision for pinpointing in dense or noisy environments. It's especially useful for long traces and distinguishing between parallel utilities.

Testimonials

What Our Customers Are Saying

'...he found his first coin. A 1946 wheat. I'm glad to say we have a new Digger in the family."





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Landon Howlett

Fisher F70

This is a Union Officers belt plate from the Civil War, it was found at a G.A.R. 1895 Civil War reunion encampment...





JimDoan

Jim Doan

Bounty Hunter Quickdraw II

'...great detector please keep me informed on the new machines coming out i got pictures of your detectors for years finding things in fields that have been hunted by everything till the First Texas hit the ground.'


RyanVecchio1

Ryan Vecchio

Bounty Hunter Platinum

"Great contact information, wonderful interaction and the product is wonderful. I will expand my accessories, new usable work products, thanks for this convince and an all USA (EL Paso TX) buy local products."
JamesKSample

James K. Sample

Fisher TW6

'...i pulled the trigger on it just in time to detect the new yard my son was on and all i can say is this machine is one serious coin shooter the first yard I scan with it I get my first silver quarter (1946) and my first Morgan dollar (1900) which was 11in .

DaveBrumfield

David Brumfield

Bounty Hunter QuickDraw Pro

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