low frequency sensors

NDT SensorAE Sensors that are ideal for:

  • Monitoring large objects
  • Objects made of highly attenuated materials
  • Tank floor corrosion
  • Leak detection
  • Leak detection in pipelines
  • Partial discharge detection
  • Concrete structure integrity testing

 

Vallen Systeme’s low frequency acoustic emissions sensors measure in the range between 20 kHz and 100 kHz. There are several different models available, depending on frequency and application. Listed below are the available models, or contact us for assistance with your application.

AE-sensor overview

Download Vallen Acoustic Emissions Sensors Overview

 

 

AE-sensor nomenclature

Most Vallen Sensors are named systematically by its peak frequency and information about the case type and pre-amplifier information:

vallen-ae-sensor-nomenclature


VS30-V

vs30-v_300dpi_800x650pxThe VS30-V is a passive piezoelectric AE-sensor. The low frequency response makes it especially suited for monitoring large objects or objects made of highly attenuating material. The VS30-V can be used for tank floor corrosion and leak detection, leak detection in pipelines, partial discharge detection and integrity testing of concrete structures.

Remark to frequency response curve below: cable used RG 178 / 0.3 m. VS30-V has 6 dB less sensitivity if used with 1.2 m long cable.

more information

Download VS30-V Specification Sheet


VS30-SIC-46dB

vs30-sic-46db_300dpi_800x650pxThe VS30-SIC-46dB is a piezoelectric AE-sensor with integrated preamplifier. The low frequency response makes it especially suited for monitoring large objects or objects made of highly attenuating material. The VS30-SIC-46dB can be used for tank floor corrosion and leak detection, leak detection in pipelines, partial discharge detection and integrity testing of concrete structures. The integrated preamplifier has 46 dB gain and supports pulse through for automatic sensor testing.

more information

Download CS30-SIC-46dB Specification Sheet


VS45-H

vs45-h_300dpi_800x650pxThe VS45-H is a passive piezoelectric AE-sensor with a wide frequency response. Its frequency response is characterized by a peak at 280 kHz and can be used in the frequency range from 40 kHz to 450 kHz. It is a broad band response AE-sensor covering the low frequency and standard frequency range.

more information

Download VS45-H Specification Sheet


VS75-SIC-34dB

vs75-sic-34db_300dpi_800x650pxThe VS75-SIC-34dB is an AE-sensor with integrated preamplifier. Its frequency response is characterized by a peak at 75 kHz where it exhibits a resonance. The low frequency response makes it suited for monitoring large objects or objects made of highly attenuating material. The VS75-SIC-34dB can be used for integrity testing of bitumen coated pressure vessels and for detecting partial discharge. The integrated preamplifier has 34 dB gain and supports pulse through for automatic sensor testing.

more information

Download VS75-SIC-34dB Specification Sheet


VS75-SI-40dB

vs75-si-40db_300dpi_800x650pxThe VS75-SIC-40dB is a piezoelectric AE-sensor with integrated preamplifier. Its frequency response is characterized by a peak at 75 kHz where it exhibits a resonance. The low frequency response makes it suited for monitoring large objects or objects made of highly attenuating material. The VS75-SIC-40dB can be used for integrity testing of bitumen coated pressure vessels and for detecting partial discharge. The integrated preamplifier has 40 dB gain.

more information

Download VS75-SI-40dB Specification Sheet


VS75-SIC-40dB

vs75-sic-40db_300dpi_800x650pxThe VS75-SIC-40dB is a piezoelectric AE-sensor with integrated preamplifier. Its frequency response is characterized by a peak at 75 kHz where it exhibits a resonance. The low frequency response makes it suited for monitoring large objects or objects made of highly attenuating material. The VS75-SIC-40dB can be used for integrity testing of bitumen coated pressure vessels and for detecting partial discharge. The integrated preamplifier has 40 dB gain and supports pulse through for automatic sensor testing.

more information

Download VS75-SIC-40dB Specification Sheet


VS75-V

vs75-v_300dpi_800x650pxThe VS75-V is a passive piezoelectric AE-sensor. Its frequency response is characterized by a peak at 75 kHz where it exhibits a resonance. The low frequency response makes it suited for monitoring large objects or objects made of highly attenuating material. The VS75-V can be used for integrity testing of bitumen coated pressure vessels and for detecting partial discharge. Remark to frequency response curve below: cable used RG 178 / 0.3 m. VS75-V has 6 dB less sensitivity if used with 1.2 m long cable.