What is the difference between the SONAPHONE and the SONASCREEN 2 acoustic camera?

The SONAPHONE and the SONASCREEN 2 both detect and analyze sound signals in the ultrasonic frequency range. However, they differ in their measurement principles and typical areas of application.

SONAPHONE

The SONAPHONE is a modular ultrasonic testing device that can be connected to different airborne and structure-borne sound sensors.

It can therefore be used for applications including:

• leak detection and leak assessment,
• electrical inspections,
• bearing and machine inspections,
• lubrication condition assessment,
• steam trap testing,
• valve testing, and
• cavitation analysis.

During airborne sound measurements, the sound source is located by aiming the sensor and searching for the highest sound level. For structure-borne sound measurements, the sensor is coupled directly to the measurement point or by means of a waveguide.

The SONAPHONE is particularly suitable for targeted measurements at individual test points, recurring inspection routes, and comparative or trend measurements.

SONASCREEN 2

The SONASCREEN 2 is an acoustic camera. A microphone array detects sound signals across a larger area and displays the position of the sound source directly in the camera image.

It is particularly suitable for:

• quickly inspecting larger system areas,
• visually locating leaks,
• displaying several sound sources in one image,
• detecting electrical partial discharges,
• inspections from greater or safer distances.

In addition to the acoustic image, the device provides an optical camera image and thermal imaging functionality. Ultrasonic signals can also be made audible through headphones.

The SONASCREEN 2 detects airborne sound. For direct structure-borne sound measurements on bearings, valves, or steam traps, the SONAPHONE is used with a suitable structure-borne sound sensor.

Selecting the appropriate device

The most suitable device depends on the inspection task:

• The SONAPHONE is suitable for targeted measurements, structure-borne sound inspections, and recurring measurements at defined test points.
• The SONASCREEN 2 is suitable for obtaining a quick visual overview and locating airborne sound sources directly in an image.

The two systems complement each other and can be used for different inspection tasks within a comprehensive maintenance strategy.