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Service and Calibration Information

General Information, Scheduling, and Shipping

Typically, Sea-Bird can calibrate an instrument and perform minor repairs within 4 - 6 weeks, plus shipping time. However, this may vary, depending on current backlog. If time is critical, contact us before shipping to verify that we can meet your schedule. Before shipping, obtain an RMA number and fill out a Service Request Form, so that we know your instrument is on the way and can schedule appropriately. For Service and/or Calibration scheduling for work to be done in our U.S. facility (shipping address: Sea-Bird Electronics, Inc., 13431 NE 20th Street, Bellevue, Washington 98005  USA): Use our On-Line RMA and Service Request Form to get an RMA number and let us know what instrument(s) you are sending.


  • The typical 4 - 6 week turnaround does not apply to recalibrating / repairing auxiliary sensors produced by other manufacturers. Recalibration / repair of these sensors must be performed by the manufacturers.
  • When contacting us about an instrument, we require the instrument serial number to verify the instrument configuration / features. (Click here to see an example of where to find the serial number on your instrument.)
  • For RMA number, Service Request Form, and/or shipping instructions for our European Calibration and Repair Center, see Sea-Bird Europe.

Please review the following:


Every Sea-Bird instrument is delivered fully calibrated to enable the world's best science. Our 28 CTD and DO calibration baths at our U.S. factory, as well as the calibration baths at our European calibration lab, ensure Sea-Bird instruments are the gold standard in research and operations.

Sea-Bird focuses on delivering the most accurate calibrations possible, designing instruments that eliminate or minimize dynamic errors, and preserving initial accuracy throughout a deployment. Accuracy begins with stable sensors and circuits, and calibration in Sea-Bird’s state-of-the-art automated bath systems for temperature, conductivity, and dissolved oxygen. The calibration facilities are backed by an in-house metrology laboratory where primary standards in temperature (water triple point and gallium melting point) and conductivity (IAPSO Standard Seawater) are maintained. Calibration bath data, reference sensor stability, and standards data are monitored daily and regularly reviewed for consistency by the chief scientist.

The economies of scale and efficiencies of automation also benefit customers by keeping calibration costs low, and by providing “new production” and “customer service” calibration capacity to keep pace with new instrument sales and support of the growing world-wide fleet of deployed instruments projected for the future. In 2015, these automated calibration systems performed a combined total of more than 40,000 complete sensor calibrations.

For additional background information on our calibration systems:

One of several CTD Calibration labs

One of several CTD Calibration labs

Salinity checks in metrology lab

Dissolved Oxygen checks in metrology lab —
over 2000 Winkler titrations performed annually support
oxygen sensor calibrations and single-point verifications


Triple-Point-of-Water cell for
Temperature checks in metrology lab