Channel Calibration
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MXD70 Dissolved Oxygen
Setup and Operating Guide
Channel Calibration
Enter Calibration History
The MXD70 series has a calibration history feature
which allows the user to review the record of sensor
solution calibrations.
To enter the calibration history menu press enter.
– Enter Calibration History
Calibration History
The calibration history page provides a record of all
Zero and Span calibrations carried out.
The data includes the date and time of the
calibration, the calibration span point, the measured
sensor current, the temperature compensation
reading and the pressure compensation reading.
/ – Move To Next Page Up or Down
ZERO
– Show the Zero Cal History
SPAN
– Show the Span Cal History
EXIT
– Return To Calibration Menu
CLEAR
– Clear All of the Calibration History
Sensor Condition
The MXD70 Series is capable of analysing the result
of the dissolved oxygen sensor’s zero and span
calibration and indicates to the user the condition
the sensor is in.
 Good – The sensor is operating within set
parameters.
 Fault – The sensor’s output is too high at zero
calibration. See section Fault Finding Section for
assistance.
 Refill – The sensor’s output is to low at span
calibration and will likely need replenishing. See
section Fault Finding section for assistance.
 Span High – The sensor’s output is too high at
span calibration. See section Fault Finding
section for assistance.
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