Consider an RBRconcerto³ C.T.D.DO logger, where the DO channel is a RBRoptode. The RBRoptode transfers both the foil temperature and the dissolved oxygen concentration (not compensated for salinity). The RBRconcerto³ calculates the concentration compensated for salinity and pressure first: where 

and where T is the water temperature (in °C), and which correspond to Garcia and Gordon coefficients.

The corresponding logger coefficients are:

One might change c0 and c1 in order to perform a two point calibration to the RBRoptode. Please note that those coefficients are used and stored only by the logger, not the RBRoptode.



>> calibration 4 type
<< calibration 4 type = doxy23

Confirm the channel type.

>> calibration 4
<< calibration 4 type = doxy23, datetime = 20171201000000, c0 = 0,c1 = 1, c2 = 3.25e-5, n0 = 5, n1 = 8, n2 = 3, n3 = value

Request confirmation of all calibration coefficients.