Fisher XLT30 Acoustic Leak Detector
Fisher XLT30 Acoustic Leak Detector
Fisher XLT30 Acoustic Leak Detector
Fisher XLT30 Acoustic Leak Detector
Fisher XLT30 Acoustic Leak Detector
Fisher: Since 1931

Fisher XLT30 Acoustic Leak Detector

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H
Hamed Erfanian
Super

Very good product and good quality.
The most important thing is to send the product quickly. thank you

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Product Description

The Fisher XLT-30 is built for professional leak detection specialists who require precision and reliability in the field. Designed to pick up the faintest sounds of underground leaks, the XLT-30 stands out with its advanced filtering system and crystal-clear audio clarity. Whether working on concrete, asphalt, or turf, the XLT-30 adapts to your environment with sensor options tailored to specific site conditions.


Equipped with high-sensitivity microphones and a non-distortion amplification system, the XLT-30 delivers exceptional audio feedback for pinpointing leaks. The unit includes selectable filters (All Pass, Low Pass, High Pass, Band Pass, and Notch) with adjustable frequency ranges to isolate leak sounds from background noise. Visual feedback is provided through an LCD bar graph and digital readout, while the notch filter helps reject interference from nearby motors or traffic. The optional Multi-Sensor enables detection on both hard and soft surfaces, simplifying fieldwork without compromising performance.


Engineered for demanding jobs, the XLT-30 features a rugged splash-proof housing, intuitive controls, and lightweight portability. The ergonomic design includes an adjustable neck strap, padded headphones, and sound rods for direct contact use. Powered by two 9V batteries, it delivers up to 50 hours of operation—ideal for long shifts without interruption. Designed and assembled in the USA, the XLT-30 is a durable, field-proven tool trusted by leak detection professionals worldwide.


Purpose: Leak Detect

Specifications

Manufacturer: First Texas Products, LLC
Brand Name: Fisher Research Labs
Country of Origin: USA
Warranty: 2 Years
Operating Frequency: 60 Hz – 6 kHz (Gain = 95 dB), 20 Hz – 60 Hz (Gain > 90 dB)
All Pass Filter: 60 Hz to 6 kHz
Low Pass Filter: Adjustable cut-off frequency from 150 Hz to 2.4 kHz
High Pass Filter: Adjustable pass-band frequency from 150 Hz to 2.4 kHz
Band Pass Filter: Adjustable center frequency from 150 Hz to 2.4 kHz
Notch Filter: Adjustable center frequency rejection from 150 Hz to 2.4 kHz (usable with any filter)
Audio Output: High-performance headphones (64 ohms)
Visual Output: LCD bar graph display with 2-digit numerical readout
Grade of Protection: Splash Proof
Battery Test: Automatic, real-time battery level indicator
Battery Type: Two 9-volt alkaline batteries
Battery Life: Approximately 50 hours

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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 operating frequency range of the XLT-30, and how does it affect leak detection?

The XLT-30 operates from 20 Hz to 6 kHz, with gain levels of >90 dB in the lowest band and up to 95 dB overall. This wide range allows users to isolate and amplify subtle leak sounds across different pipe materials and ground conditions.

How do the adjustable filters improve leak detection accuracy?

The unit offers All Pass, Low Pass, High Pass, Band Pass, and Notch filters. These help isolate the leak signal by removing unwanted background noise. Filter frequencies are adjustable between 150 Hz and 2.4 kHz, allowing customization based on the leak environment.

When should I use the Notch Filter, and how does it work?

The Notch Filter is used to reject narrow-band interference, such as electric motors or traffic noise. You can fine-tune the notch frequency using the arrow keys to target and suppress the interfering sound without affecting the leak signature.

What’s the difference between the Multi-Sensor, Big Foot, and Little Foot sensors?

The Multi-Sensor combines the capabilities of the Big Foot and Little Foot for use on both hard and soft surfaces. The Big Foot is optimized for large, flat, hard surfaces, while the Little Foot is ideal for indoor or tight-space leak detection.

Can I use the XLT-30 for leak detection on soft ground or turf?

Yes. When equipped with the Multi-Sensor or Hydrophonic Cylinder Probe and sound rods, the XLT-30 can detect leaks beneath soft surfaces like turf, allowing for versatile application in both urban and rural environments.

What visual indicators does the XLT-30 provide during operation?

The LCD display shows a real-time bar graph representing sound intensity and a 2-digit numerical readout. These indicators assist in verifying peak signals and comparing relative noise levels across locations.

Does the XLT-30 automatically save filter or volume settings after shutdown?

No. Once powered off, the XLT-30 resets to factory default settings—All Pass filter mode, medium volume, and centered notch. Users must reapply custom settings each session.

How does the Peak Hold function assist during leak surveying?

Peak Hold displays the highest detected sound level until reset. This feature helps compare readings across survey points without needing constant observation of the display.

What is the function of the mute button on the control panel and sensors?

The mute function prevents loud, unwanted audio feedback when repositioning the sensors. It is critical for user safety and comfort, especially in high-sensitivity environments.

How long do the batteries last, and are there any battery indicators?

Two 9V alkaline batteries provide up to 50 hours of operation. A real-time battery level indicator displays during startup, and a “Low Battery” warning activates below level 68 to allow for job completion before shutdown.

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

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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

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'...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.'


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Ryan Vecchio

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"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

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'...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 .

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