How can steam traps be checked for correct operation using ultrasound?

During operation, steam traps generate structure-borne sound signals in the ultrasonic frequency range. These signals can be detected using the SONAPHONE and the BS20 structure-borne sound and temperature sensor and used to assess the operating condition.

The dedicated SteamExpert app is available for steam trap testing and guides the user through the inspection process.

How is the measurement performed?

The BS20 is coupled to a suitable measurement point on the steam trap. The sensor detects the resulting structure-borne sound and transfers the ultrasonic signal to the SONAPHONE.

In addition, the integrated infrared temperature sensor in the BS20 can be used to measure the surface temperature without contact.

This provides two measurement variables for the assessment:

• the ultrasonic signal, and
• the temperature.

Why are ultrasound and temperature combined?

The ultrasonic measurement provides information about the acoustic processes occurring within the steam trap. The temperature measurement supplements this information with the thermal operating conditions.

Combining both measurement variables supports a well-founded assessment of the steam trap.

What is the role of SteamExpert?

SteamExpert is specifically designed for steam trap testing and provides an optimized workflow for performing and documenting the measurement.

The measurement data can subsequently be organized and evaluated further in SONAPHONE DataSuite. Steam traps can be assigned to measurement points using information such as manufacturer, model, trap type, and nominal size.

Operating pressures and other application-specific parameters can also be stored.

Reliable assessment requires the respective steam trap and its operating conditions to be taken into account correctly.