With the RBRlegato³ C.T.D logger, the conductivity reading from the conductivity channel without corrections is given by a simple linear function: where R is the normalized voltage ratio from the channel monitoring conductivity, c0,c1 are the core coefficients of the linear equation, along with c2 which is a geometrical factor (K-factor) reflecting the final installation of conductivity cell, 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

• Craw is the uncorrected conductivity, c0  +  c1 × c2 × R,
• x0, x1 correspond respectively to the temperature compensation constants "Kc1", "Kc2"
• x2, x3, x4 correspond respectively to the pressure compensation constants "Kp1", "Kp2", "Kp3"
  
• x5 is the calibration temperature "Tcal" in °C,
• x6 is the calibration pressure "Pcal" in dbar,
  
• n0 is the index of the temperature channel, in this example 2,
  value(n0) is the final output value of the temperature channel in °C,
• n1  is the index of the pressure channel, in this example 3,
  value(n1) is the final output value of the pressure channel in dbar,
• Ccorr is the corrected output in mS/cm. 

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).