Continuing with the RBRconcerto³ C.T.D.pH logger, the conductivity reading from Channel-1 without corrections is given by a simple linear function: where R is the normalized voltage ratio from Channel-1 monitoring conductivity, c0,c1 are the core coefficients of the linear equation, and Craw is the uncorrected conductivity output, reported in mS/cm for RBR marine instruments.

The equation which corrects the output for the effects of both temperature and pressure on the conductivity cell is: Casting the equation into the style used by the logger would give:
where

It is quite common to have a logger monitoring conductivity and temperature without a pressure channel, typically deployed at a known, constant depth. In this case, n1 would be set to "value", and so value(n1) would be substituted by a default value (see the "settings pressure" command).

>> calibration 1 type
<< calibration 1 type = cond11

Confirm the channel type.

>> calibration 1 datetime = 20171201000000, c0 = 0.2346, c1 = 153.4873

Set the core coefficients.

>> calibration 1 datetime = 20171201000000, x0 = 0.2003, x1 = 0.2943, x2 = 0.005, x3 = 0.085, x4 = 0.0001, x5 = 0.0000, x6= 0.0000, x7 = 15.028, x8 = 10.0025

Set the cross-channel correction coefficients.

>> calibration 1
<< calibration 1 type = cond11, datetime = 20171201000000, c0 = 0.2346, c1 = 153.4873, x0 = 0.2003, x1 = 0.2943, x2 = 0.005, x3 = 0.085, x4 = 0.0001, x5 = 0.0000, x6= 0.0000, x7 = 15.028, x8 = 10.0025, n0 = 2, n1 = 3

Request confirmation of all calibration coefficients.