About Us

CTRL Systems designs and delivers the
best ultrasound detectors in the world, but
we’re more than just an innovative tool
manufacturer. We are the ultrasound
experts, and we want to help your team
build and sustain a world-class ultrasound
program, specific to your organization’s

The UL101 Electrical

The UL101 Electrical Inspector utilizes airborne attachments to safely inspect sealed electrical panels and substations. The UL101 Electrical Inspector allows for early, long-distance detection of arcing, corona discharge, and tracking. Save time and money by reducing transmission/distribution loss and outages. The parabolic accessory (PowerBeam 300) can accurately pinpoint sources of ultrasound within 1 degree off target from up to 300 feet (91.44 meters) away. 

The Benefits

Key Features

Inspections performed at a safe distance

Ability to inspect sealed panels

Lightweight, accurate, easy to use

Identify arcing and tracking potential as a safety precaution before using infrared

Inspect sealed panels without opening or using an expensive window

How It Works

Using ultrasound detectors for leak detection is a growing industry standard. Acoustic ultrasound leak detection is recommended by many, such as the U.S. Department of Energy, as the best method for detecting the location of leaks in order to minimize energy waste and improve plant efficiency.

The CTRL UL101 Leak Detector converts the ultrasound (40 kHz +/- 1 kHz) down into the audible range and outputs to a headset. All other frequencies are filtered, so that even the smallest air/gas, vacuum, or refrigerant leak can be detected and pinpointed in a noisy plant environment.

Technical Specifications

21″ x 17″ x 1.26″ (533 x 432 x 32 mm)

13″ (330 mm)              

45 oz (1.3 kg)  

Two (2) Standard AAA Alkaline Batteries (for laser)

> 20 hours

1 Year Parts & Labor

8.75” x 1.26” x 1.26” (222 x 32 x 32 mm)

4.125″ x 1.26″ x 1.26″ (105 x 32 x 32 mm)

11.6 oz (330 g)

Extruded Aluminum, wall thickness .09″ (2.3 mm)

9-Volt Alkaline (> 45 continuous hours use)

21″ x 18″ x 7″ (53 x 18 x 46 cm)

14 lbs (6 kg)

Up to 300 feet (90 m)    

Minimum Intensity: 10-12 W/m2 (0 dB SPL)

Minimum Ultrasonic Pressure: 2.0 x 10-5 PA @ 40 kHz     

1.8 – 2.2 kHz @ level 0.7 (or -3 dB SPL)

-4° to +130° F (-20° to +54° C)

Industrial Grade/600-Ohm Impedance

21-24 dB External Noise Attenuation 

Over or Behind-the-Head (for use with hardhat)

5-year parts & labor on all manufacturer’s defects

No calibration required

Requalification of performance (once per year)

Contact an Expert

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