PowerBeam 300

PowerBeam 300
Parabolic Accessory

The PowerBeam 300 is a parabolic accessory originally designed to test high voltage insulators

and transformers from a safe distance with a high degree of accuracy. The PowerBeam 300 can accurately

pinpoint sources of ultrasound within 1 degree off target from up to 300 feet (91.44 meters) away.


The PowerBeam 300 accurately pinpoints source of ultrasound to within 1 degree from center and improves

the sensitivity of the UL101. The “PB300” was originally designed for the indication and location of corona discharge

and arcing on medium/high voltage transformers.

The PB300’s ability to pinpoint ultrasound is very useful when finding compressed air/gas or steam leaks in pipes located

on high ceilings. There is no need to get a ladder or scissor lift.

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Leak Detection
Electrical Inspection
Valve & Steam Traps
Power Transmission
Leak Detection
Find leaks from further away and pinpoint to exact source without use of a scissor lift.
Electrical Inspection

Arcing – indication that a failure has occurred

Tracking – detectable even when infrared cannot

Valve & Steam Traps

Detect leaks and operation from a safe distance.

Power Transmission

Corona discharge is a major contributor to energy loss and also Radio Frequency Interference

How It Works

Pinpoint ultrasound from up to 300 feet (100m) away using the PowerBeam 300 extended range attachment along with the CTRL UL101 receiver and headset. The ultimate add-on for your ultrasound listening device. 

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Technical Specifications

Distance of Reception

up to 300 ft 

Threshold of Sensitivity

0 dB SPL

Resonance Frequency

40 kHz +/- 1 kHz

Operating Temperature

-4° to +130° F
(-20° to +54° C)

Power Supply

Standard AAA battery (x 2)

Battery Life

30 continuous hours

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

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