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Sengenia are delighted to be able to partner with Somni to offer you their sensor range. Please take a look below at what is on offer and don't hesitate to let us know if we can assist further or provide you with a quote.

All Somni Sensors are fully compatible with the Luna Hyperion range, so we are able to provide all you need to get your project up and running...

Accelerometers

Vibration detection is one of the most applied (health) monitoring methods. Get direct insight in system behaviour and monitor deviations over time by measuring acceleration with Somni acceleration sensors. Our accelerometers are available in many shapes and sizes, each one with its own specifications.

Design of our sensor

The acceleration sensor mechanisms made by Somni are based on a decade of experience in transducer design. Our vibration sensors comprise of a proof-mass which is part of a compliant mechanism. Due to this robust monobody design the sensor response is robust and reliable. All transducers are frictionless and produce accurate signals regardless of g-level.

Dynamic response

The sensor produces a flat response over its specified region and increases in sensitivity towards its resonance. Both sensitivity and phase show minor deviations up to at least 1/3 of the resonant frequency. This makes the sensor particularly suited for use in applications in which timing is important.

 

Calibration

Each acceleration sensor is calibrated prior to shipment. Our standard calibration procedure generates a measurement report which include information on sensitivity, flatness and resonance. A calibration formula is provided to transform the optical signal into acceleration data.

Acceleration sensor AC 1-ax 8 NT

Fiber Bragg Grating based single axis acceleration sensor, specifically designed to measure strong vibrations. This tiny accelerometer is ideally suited for monitoring of structures that vibrate fast and violent. All sensors are packaged in a rugged stainless steel housing offering maximum protection against harsh environments.

  • >8pm/g sensitivity

  • +/-150 g range

  • shock proof up to 500g

  • 5-1500 Hz bandwidth

  • >2500 Hz resonance

  • 1, 2 and 3 axis

Acceleration sensor AC 1-ax 80 NT

Acceleration sensor suitable for medium range and high sensitivity applications. This small form sensor is particularly suitable for monitoring of structures and machines that vibrate noticeable. All sensors are packaged in a rugged stainless steel housing offering maximum protection against harsh environments.

  • >80pm/g sensitivity

  • +/-20 g range

  • shock proof up to 70g

  • 5-700 Hz bandwidth

  • >1250 Hz resonance

  • 1, 2 and 3 axis

Acceleration sensor AC 1-ax 800 NT

Acceleration sensor suitable for low range and extreme sensitivity applications. This sensor is particularly suitable for monitoring of structures with minimum vibrations or seismic surveying. All sensors are packaged in a rugged stainless steel housing offering maximum protection against harsh environments.

  • >800pm/g sensitivity

  • +/-2 g range

  • shock proof up to 5g

  • 1-150 Hz bandwidth

  • >350 Hz resonance

  • 1, 2 and 3 axis

Tilt Sensors

Deflection or bending of (super) structures can provide invaluable information related to its structural integrity. A bridge for example experiences the dynamic loads of passing trucks and lorries which will cumulate stress and strain over time. As a result the bridge will slowly deform (e.g. compaction, deflection and/or bending). These changes of the bridge shape and structure are so slow and subtle that they often remain unnoticed by maintenance engineers. However, such long term deformation is anything but harmless! If undetected a collapse is just a matter of when.

Most of Europe´s bridges are built in the 1960´s and 1970´s. In those days the use of reinforced concrete was very common. In current time, i.e. 50 to 60 years later, these bridges are deteriorating at a rapid rate and the majority of bridges in use are considered deficient by today´s design standards. A widespread failure in bridges across Europe is imminent. The collapse of the Morandi bridge in Genoa (Italy) at an age of 51 years, is expected to be merely the first major incident. The Morandi bridge has highlighted the importance of preventive monitoring systems, which are able to identify structural problems at an early stage and by doing so guaranteeing the public safety.

 

Somni strongly believes that sensors based on fiber optics can make the difference. Fiber optic sensing technology, as used by Somni, is free from corrosion, has long-term stability, and allows continuous monitoring. Furthermore, it is free from electromagnetic interferences, avoiding undesirable noise, while having a very low signal transmission loss that allows very remote monitoring. The number of potential failure modes inside the sensor is reduced to a bare minimum owing to the long term sensor reliability. Incorporating extra redundancy in the sensor system ensures very low failure rates or loss of monitoring data.

Tilt sensor TI 1-ax 500 T

The TI 1-ax 500 T sensor of Somni Solutions is used for monitoring small changes in deflection angles (tilt) with high accuracy and unprecedented stability. This sensor is particularly suitable for monitoring of large structures and objects such as bridges. The TI 1-ax 500 T tilt sensor is unique in its kind with a high sensitivity per unit angle deflection and a total measuring range of 10 degrees. The intrinsic temperature compensation mechanism allows to resolve very small angle changes of 0.002 degrees. All sensors are packaged in a rugged stainless steel housing offering maximum protection against harsh environments.

  • >500pm/deg sensitivity

  • +/-5 deg range

  • excellent long term stability

  • temperature & drift compensated

  • 1 and 2 axis

  • including mounting brackets