deri_seapres - derivation of sea pressure from absolute pressure

The sea pressure (also referred to as hydrostatic pressure) is simply the difference between pressure measured underwater and atmospheric pressure.

In the form used by the logger, using an RBRconcerto³ C.T.D as an example, this becomes:

n0 is the label of the pressure channel, pressure_00 in the example.
n1 is the label of the atmospheric pressure channel; not present in the example (default value, refer to parameters atmosphere).

Examples

CODE

>> calibration seapressure_00 equation
<< channel seapressure_00 equation=deri_seapres

Confirm the equation type.

CODE

>> calibration seapressure_00
<< calibration seapressure_00 datetime=20251001000000 equation=deri_seapres offset=0.0000000e+000 slope=1.0000000e+000 n0=pressure_00 n1=value

Request confirmation of all calibration coefficients.