❖ PAR
❖ Transmissometer
❖ Single Channel – Three channel Fluorimeters
We recommend that the operator does not change the calibration and data processing method, even
though permitted by the management firmware, otherwise the sensor specifications stated on the
IDRONAUT documentation cannot be guaranteed.
5.5.1 Pressure sensor
The aim of the pressure sensor calibration is the offset zeroing. It is preferable to immerse the probe in
water, up to about 10 cm from the probe housing, and wait for few seconds before starting the
calibration. Once the pressure sensor calibration is chosen, the following message appears:
Do you intend to review the calibration coefficients?
By answering <NO> (the default choice), the operator will continue with the sensor calibration sensor,
whereas, answering <YES> will allow the operator to see and modify the calibration coefficients.
Pressure = a + bx + cx2
The calibration coefficients: a, b, and c are indicated on the probe "Calibration Certificate”.
Pressure sensor calibration
Zeroing pressure offset - Immerse the probe and wait few seconds to stabilize
the sensors temperature
Type <any key
>To continue, <ESC>To leave
The operator must type any key to continue with the pressure calibration, whereas, if the <ESC> key is
typed, the calibration procedure immediately terminates. The pressure calibration procedure goes on
with the following message:
Pressure calibration in progress
Calibration statistics
Sensor Offset - ADC counts dbar
111.0 0.8
At the end of this procedure, the programme updates the calibration values and shows the "Calibration menu".
5.5.2 Temperature & Conductivity sensor calibration
Once selected the sensor to be calibrated, the following message appears:
Current calibration values
Polynomial coefficients a + bx + cx2 + dx3
a = x.xxx
bx = x.xxx
cx2 = x.xxx
At the end of the current calibration value, the following message appears:
Enter the polynomial degree and number of coefficients
Polynomial degree:
The operator is requested to enter the degree of polynomial (1..3), and then to enter the coefficient values
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