Contact person
Jonas Pettersson
Ingenjör
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Calibration of accelerometers
RISE is calibrating most types of vibration transducers. The transducer can be calibrated separately or together with its conditioning unit.
Purpose
The National Laboratories are responsible for maintaining the national reference standards for each measurement quantity and spreading metrological competence and traceability to industry and society at large. The national reference standards are the highest level of traceability in Sweden.
A calibration performed at a National Laboratory fulfils all typical traceability and accreditation requirements that commonly exist in industry and society at large.
Method
The most common type of vibration transducers is the accelerometer, but velocity transducers also occur, especially within the fields of ground vibrations and machine monitoring.
The most common calibration is a sine calibration between 6,3 and 2000 Hz alternatively between 20 and 8000 Hz.
Low frequency transducers can be calibrated down to below 1 Hz.
Accelerometers which are used at high levels can be shock calibrated up to 50000 m/s².
Vibration velocity transducers can be excited horizontally or vertically.
Reference accelerometers, i.e. calibration standards, are calibrated with laser interferometer technique.
Other types of vibration transducers, e.g. impact hammers, impedance heads and dynamic force transducers, are also calibrated.
Deliveries
The calibration results are reported in a digital calibration certificate in Swedish or English which states that the calibration was performed at a National Laboratory.
