Manual

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Calibration Registers

Mode & Access

Level (R/W)

Data Type Description

0118 2 R1/W3 float Live salinity value (PSU)

0120 2 R1/W3 float Default salinity value (PSU, default = 0.0)

0122 2 R1/W3 float Live barometric pressure (mbar)

0124 2 R1/W3 float Default barometric pressure (mbar, default = 1013.25)

0126 2 R1/W3 float 100% saturation calibration reading (mg/L)

0128 2 R1/W3 float 100% saturation temperature reading (°C)

0130 2 R1/W3 float 100% saturation salinity value (PSU)

0132 2 R1/W3 float 100% saturation barometric pressure (mbar)

0134 2 R1/W3 float 0% saturation calibration reading (mg/L)

0136 2 R1/W3 float 0% saturation temperature reading (°C)

0138 2 R1/W3 float Calibration slope (default = 1.0)

0140 2 R1/W3 float Calibration offset (default = 0.0)

Live Salinity Value

The live salinity value is used to correct the oxygen concentration value for salinity.

Values must be written in Practical Salinity Units (PSU) in the range 0 to 42 PSU. This

is not a measured parameter.

Default Salinity Value

The default salinity value is loaded into the live salinity value register when power is

first applied to the probe. The default salinity value is used in calculations until a live

salinity value is written. This is not a measured parameter.

Live Barometric Pressure

The live barometric pressure is used in the calculation of percent saturation and to

determine the theoretical saturation point during calibration. Values must be written in

millibars in the range 506.625 to 1114.675 mbar. This is not a measured parameter.

Default Barometric Pressure

The default barometric pressure is loaded into the live barometric pressure register

when power is applied to the probe. The default barometric pressure is used in

calculations until a live barometric pressure is written. This is not a measured

parameter.

100% Saturation Calibration Values

These values represent the sensor conditions while the probe is in a 100% saturation

calibration environment. These are not measured values, they are written by the

controller during the calibration process.