Comprehensive calibration services in accredited laboratory with our high-performance systems

Our DAkkS (successor of DKD) accredited calibration laboratory D-K-15183-01-00 has reached a leading position worldwide. We are accredited for the measurands acceleration and sound pressure level as well as for measurement amplifiers according to the international standard DIN EN ISO/IEC 17025.

Using our own CS calibration system, our calibration laboratory is able to perform calibration with minimum measurement uncertainty for almost any possible application.

Our accreditation certificate


Service finder

Quick and easy: Find the right calibration service and send a request!


Special calibrations and services

Seismometer & Geophones

Low-frequency calibration of seismometers and geophones according to international standards


Automotive test equipment

HU adapters, sound level meters, deceleration and speed measuring devices for automotive monitoring


Vibration test systems

First and so far only provider for on‑site calibrations of vibration test systems at DAkkS level



The only manufacturer-independent calibration laboratory in Europe for speed calibration of GNSS/INS devices


Spring hammer

DAkkS calibration by self-developed and so far only method certified by the German Accreditation Body for impact hammers


Laser vibrometer

Primary calibration and recalibration with the lowest possible measurement uncertainty, traceable for reproducible measurements


Environmental simulation

Mechanical and climatic tests can be carried out in parallel with simultaneous function monitoring


Interlaboratory comparison (ILC)

Standard-compliant participation and professional implementation of round robin tests


Benefits at a glance

  • Qualified advice on the appropriate service and conformity statement
  • Short lead times for calibration services – typically 5 working days
  • Internationally recognized calibration certificates in accredited lab (DAkkS, ILAC-MRA)
  • Tailored solutions and special calibration methods (laser vibrometer, human vibration meter, geophone, primary calibration) upon request
  • Fast and cost-effective alternative to national metrology laboratories (Primary calibration of reference accelerometers according to ISO 16063-11)
  • Over 25 years of experience with acoustics, sound and vibration measuring devices

Clarify your questions about calibration.
Get in touch with our experts!

What is calibration?

Calibration is the process of measuring which values a measuring device can achieve under specified conditions. During a secondary calibration, the measured values are compared with so-called reference standards. Primary calibrations, on the other hand, refer to a verified physical primary quantity.

Why calibrate?

Calibration is the process of determining the output values of a measuring device as a reaction to a specific excitation. If you want to measure something, you should know the exact properties of your measuring equipment and be sure that your measurement results are comparable with the measurements of third parties. For this purpose the measuring instrument must be traced back to a national standard. This traceability is regulated and secured by the calibration hierarchy. A calibrated measuring device ensures:

  • Precise measurements with known measurement uncertainty
  • Comparability of measurement results
  • Legal certainty through traceability of the measurement results to a national calibration standard

If you want your measuring device to perform accurate and comparable measurements, your equipment needs to be regularly calibrated in an accredited laboratory. Or you can perform calibration yourself with a traceable system.

Representation of the hierarchy in calibration
Why a DAkkS (DIN EN ISO/IEC 17025) calibration?
  • High reliability of calibration results
  • Continuously monitored quality management by external auditors
  • International recognition of the calibration results
  • Results can be traced back to national and international standards
  • Calibration in line with applicable regulations and standards

As a result of calibration, a DAkkS calibration certificate (calibration according to DIN EN ISO/IEC 17025) or factory calibration certificate, will be issued. Calibration certificates issued by an accredited laboratory are recognized internationally in the framework of ISO 9000.

A reliable partner

Certifications are an advantage for companies and customers alike. Global and traceable requirements for quality management and processes help us:

  • Optimize and define clear processes,
  • Increase productivity and thus reduce costs,
  • Improve customer satisfaction and position oneself as a reliable partner.



In the hierarchy of metrological infrastructure of industrial metrology accredited laboratories are second priority - right after the National Institutes which provide the national reference for the country. Calibration certificates from DAkkS-accredited laboratories are internationally recognized, for example by signatories of the Convention of the European co-operation for Accreditation (EA) and the International Laboratory Accreditation Cooperation (ILAC) for the mutual recognition of calibration certificates.

Our accreditation certificate


ISO 9001:2008 certification

Quality management standards of the DIN EN ISO 9000 build the basis for quality assurance and quality management worldwide. They are also the most widely used standard work of ISO (International Organization for Standardization). Nationally and internationally enterprises of all sizes and industries take a DIN EN ISO 9001 certified quality management system as an ideal proof of competence and performance. SPEKTRA is certified by TÜV Süd according to DIN EN ISO 9001.


Approved exporter

As an approved exporter, SPEKTRA holds an authorization for simplified declaration of origin, issued by the main customs office. This means that we may use customs agreements between the European Union and third countries, which often means customs savings and a simplified export procedure to many countries.

Calibration certificate and conformity statement

Does your measuring equipment function properly? How can you guarantee the quality of the measurements and keep them at a high level? A regular calibration of your equipment by an accredited calibration laboratory provides answers to these questions.

Following a professional calibration, a conformity statement is usually required. This provides information about whether the measured values are within or outside the specification limit (tolerance)?

You, as the owner of a calibration object, can decide for yourself how to proceed with the conformity statement. You can find more information on conformity statements in our whatepaper.

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Link to Calibration of measuring equipment

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Information about round robin tests at SPEAKTRA

Round robin test

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Primary calibration services

Primary calibration of sensors and reference devices with highest level of traceability.

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