Calibration & Service

Returning instruments for calibration and service is straightforward. Just follow the instructions below to get online cost estimates and receive an email containing your RMA* number within a few minutes.

Service Calibration Process

If your product is an A2, RT-2M, RT-2X or FX100 Audio Analyzer please contact NTi Audio prior to shipping your instrument in order to verify any applicable special instructions.

Start here   * RMA = Return Material Authorization


NTi Audio recommends annual calibration of the products after the purchase. The calibration provides documented and traceable measurement accuracy and confirms that your NTi Audio product meets the published specifications. The calibration and adjustment procedures follow the documentation and traceability requirements of the EN ISO / IEC 17025 standard. NTi Audio is an ISO 9001:2008 certified company. For calibrations kindly follow the Service Guideline below. The typical pricing for instrument calibration and services are listed in the RMA form.

Sound Level Meter Calibration in accordance with IEC 61672-3 (2013)

NTi Audio offers the traceable sound level meter calibration in accordance with the latest standard edition IEC 61672-3. It confirms the performance specifications of the XL2 Sound Level Meter in combination with the NTi Audio Measurement Microphone. The complete range of in the standard specified tests is performed and a manufacturer calibration certificate produced. For calibrations kindly follow the Service Guideline below. The typical calibration pricing is listed in the RMA form.

Calibration Certificates for new Test Instruments

Exel line handheld instruments offer individual calibration certificates on demand. Request such calibration certificates together with the purchase of the new NTi Audio instrument. The following instruments include a calibration certificate by default: Flexus FX100, Precision Calibrator, M2010 and M2015.

Sample Certificates

Returning Instruments for Calibration or Service

Kindly observe the following instructions for the return of your instruments.

  • Battery
    Kindly remove any batteries from the product. Shipments with batteries are rated as dangerous goods, so the shipping company may increase the costs.
  • RMA Number
    • Upon confirming all details you will receive an automated email with the RMA number and the delivery address.
    • Print this email and attach it to your package.
    • Ensure that the RMA number is clearly visible on the outside of the package.
    • Ship the parcel to the delivery address printed in the email.
  • Warranty
    NTi Audio offers a one year warranty for all products from the date of purchase. In case you wish to apply for repair under warranty, please include a copy of your purchase receipt with the package.
  • Calibration & Service Costs
    • The typical calibration & service costs are listed in the RMA form.
    • You may request a quotation within the RMA form, which you will receive after inspection of the instrument(s).
    • In case no service is actually required, a minimum service charge of EUR 30 (or equivalent) plus transport costs applies.
  • Instrument(s) will be returned to you in
    approx. 3 weeks Applies to EU customers utilizing the cost saving service via NTi Audio Austria.
    approx. 1 week For fast service you may ship your instrument(s) directly to NTi Audio Liechtenstein; the time required for the actual service is typically 1-3 working days.
  • Packing
    Please return the product in the original packaging and put it in another shipping carton for protection during transportation. The customer takes responsibility for the product during transportation to NTi Audio.
  • Delivery Address
    Please send the parcel to the delivery address stated in the email sent to you.
    NTi Audio Austria NTi Audio Liechtenstein

    DHL Global Forwarding (Austria) GmbH
    NTi Lager
    Zehentweg 6
    AT-6837 Weiler / Austria
    Contact: Anne Brinkmann
    Phone: +43 5523 54947 8801

    NTi Audio AG
    Im alten Riet 102
    9494 Schaan
    Liechtenstein / Europe
    Contact: Martin Gabathuler
    Phone: +423 2396060
  • Final Check
    Please verify that following items are included in the shipment:
    → Product without accessories; batteries removed
    → Microphone for sound level meter calibrations according to IEC 61672-3
    RMA form
    → In case of warranty repair: Copy of purchase receipt
    → Delivery address and RMA number are clearly visible on outside of parcel
  • Shipping
    Send the package to NTi Audio at your own cost. NTi Audio cannot accept freight collect returns.
  • Return Shipment
    • Instrument(s) will be returned to you in approx. 3 weeks within the EU at the following flat rate:
      • Parcels <   3 kg: EUR 34
      • Parcels < 15 kg: EUR 44
      The prices include import into Liechtenstein, export back to EU and shipment to your return address.
    • Instrument(s) will be returned to you in approx. 1 week
      NTi Audio will arrange express shipment direct to your return address. The courier costs are based on your location and the parcel weight and volume. Additional local tax may apply in your country. The maximum courier costs are as follows:
      • Within EU
        • Parcels <   3 kg: EUR 85
        • Parcels < 15 kg: EUR 190
      • Worldwide
        • Parcels <   3 kg: EUR 105
        • Parcels < 15 kg: EUR 260

* RMA = Return Material Authorization