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I want to add an auxiliary sensor to my CTD (SBE 9plus, 16, 16plus, 16plus-IM, 16plus V2, 16plus-IM V2, 19, 19plus, 19plus V2, 21, 25, or 25plus). Assuming the auxiliary sensor is compatible with the instrument, what is the procedure?

Adding the sensor(s) is reasonably straightforward:

  1. Mount the sensor; a poor mounting scheme can result in poor data.
    Note: If the new sensor will be part of a pumped system, the existing plumbing must be modified; consult Sea-Bird for details.
  2. Attach the new cable.
  3. (not applicable to 9plus used with 11plus Deck Unit) Using the appropriate terminal program — Enable the channel(s) in the CTD, using the appropriate instrument command.
  4. Using Seasave V7 or SBE Data Processing — Modify the CTD configuration (.con or .xmlcon) file to reflect the new sensor, and type in the calibration coefficients.