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Acceleration sensors

Vibration detection is the most applied health monitoring method. Safety is becoming an increasing issue. Accelerometers can provide the desired safety by predicting the lifetime of structures.

For example, the change in resonance frequency of a structure or part of the structure gives a clear picture of the health of that structure (bridges, cables etc). For wind turbines, for example, the change of resonance frequencies gives a clear picture of the amount of ice accretion on the rotor blade.

Accelerometers can also be used to detect unwanted defects. An example of this is placing accelerometers on the pantograph of trains. These can detect defects in the overhead line by measuring unexpected shocks.

This is just a small selection of the large number of applications of accelerometers. We are happy to help if you have questions or ideas regarding possible applications of one of the outstanding accelerometers.

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1-axis accelerometer

AC 5 T

AC 5 T render.png

The AC 5 T is Somni's smallest dual ended fiber optic accelerometer. Weighing less than 40 grams and with a size of only 22x32x10 mm this is the smallest FBG based accelerometer available worldwide.


Applications: High g-shock and high frequency applications..

  • 6 pm/g sensitivity

  • +/-500 g measurement range

  • shock proof up to 2000g

  • 1-3000 Hz bandwidth

  • >4000 Hz resonance



AC 8 NT fiber optic accelerometer, specifically designed to measure high acceleration levels and high vibrational frequencies. 

Applications: railroad track, pantograph, overhead powerlines.

  • 12pm/g sensitivity

  • +/-200 g measurement range

  • shock proof up to 500g

  • 1-2000 Hz bandwidth

  • >2700 Hz resonance

  • 1, 2 and 3 axis

AC 80 NT


AC 80 NT fiber optic accelerometer with increased sensitivity and rugged stainless steel design for a wide field of applications. 

Applications: monitoring of engines, pumps and rotating equipment.

  • 90pm/g sensitivity

  • +/-30 g  measurement range

  • shock proof up to 70g

  • 1-1000 Hz bandwidth

  • >1300 Hz resonance

  • 1, 2 and 3 axis

AC 1000 T

AC 1000 T.png

AC 1000 T fiber optic accelerometer has unprecedented sensitivity and enables the detection of ultra-low-level, low-frequency vibrations.

Applications: monitoring large structures, bridges, archways, overpasses, foundations and detecting earth tremors.

  • 1100pm/g sensitivity

  • +/-2 g measurement range

  • shock proof up to 10g

  • 0-160 Hz bandwidth

  • >240 Hz resonance

  • 1, 2 and 3 axis

2-axis accelerometer

ACD 1000 T

ACD 1000 T V4.png

ACD 1000 T fiber optic accelerometer is an integrated two axis acceleration sensor with an intrinsic temperature compensation. Able to measure very low frequencies with exceptional sensitivity.


Applications: The sensor, with its high-performance insulated housing, is designed specifically for applications in wind turbine blades. But can also be used in other applications such as in monitoring large structures, bridges and foundations.

  • 1000 pm/g sensitivity

  • +/-2 g measurement range

  • shock proof up to 5g

  • 1-100 Hz bandwidth

  • >200 Hz resonance

  • 2 axis

ACD 250 T

ACD 250 T V2.png



AC 100 NTVR V2.png

Acceleration sensors for ITER (International Thermonuclear Experimental Reactor) face unique challenges due to the extreme environment within the reactor. The environment inside the reactor is characterized by high levels of radiation, including neutron radiation, and a vacuum environment on high temperatures. This AC 100 NTVR is specially designed for these harsh conditions.


  • 100 pm/g sensitivity

  • +/-30 g measurement range

  • shock proof up to 70g

  • 1-500 Hz bandwidth

  • >1300 Hz resonance

Additional information

Each sensor is individually tested

Somni Corporation bv

Rotterdamseweg 183C

2629 HD Delft

The Netherlands

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