Calibration Service

GUL recommends that Wavemaker® and QSR® instruments are serviced and calibrated at regular intervals to ensure continued performance and reliability.

Before returning any equipment for service or calibration, please review the Calibration Terms & Conditions and follow the return instructions provided.

All shipping documentation must clearly state that the equipment is being returned for calibration and is to be returned to the owner, to avoid customs delays or incorrect classification.

If you have any questions, our team is here to assist you.

Service & Calibration

GUL provides comprehensive maintenance and calibration for Wavemaker® and QSR® systems that go beyond basic recalibration. Each service includes a full hardware inspection, all firmware and software updates, and minor repairs where required. Any major repairs identified during service are carried out only with owner authorisation.

The inspection covers, as applicable:

  • internal batteries
  • connectors and relays
  • mounted electronics boards, verified through a full diagnostics test sequence
  • front panel keypad and display
  • GPS module
  • internal metalwork and enclosure
  • iButton reader port
  • communications interfaces, including USB, wireless, and LAN (where present)

Battery replacement can also be carried out at the same time, on request.

Certificate of Calibration

The final step of the calibration includes a series of guided wave test scans performed on GUL reference pipe samples. These scans are recorded and compared with with pre‑delivery test data and data from other calibrated systems.

On completion, an updated Certificate of Calibration is issued.

Recommended Service Intervals

The current recommended service and calibration intervals are:

  • Wavemaker® G5 instrument: every 36 months
  • Wavemaker® G4MINI instrument: every 36 months
  • Wavemaker® gPIMS Collector instrument: every 36 months
  • Wavemaker® G4 instrument: every 36 months
  • Wavemaker® G3 instrument: no longer supported
  • QSR® – QSR1: every 12 months
  • QSR® – QSR Axial: every 12 months

Email our Calibration support team

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