Channel Calibration
MXD70 Suspended Solids / Turbidity
Setup and Operating Guide
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Channel Calibration
Calibration
Calibration Procedures
When trying to calibrate an instrument to measure suspended solids it is often difficult to keep the
solids in suspension long enough for an accurate calibration to be made. The use of a magnetic stirrer
in many cases will improve this.
In the linearisation setup menu the probe signals should have been entered from the prepared
samples and the output will now be linear with percent solids. In many cases this is all that is required.
When the instrument is installed into the process the indicated readings can be verified by sample
analysis in the laboratory. The readings produced from the laboratory may not correlate with the
instrument readings. This is more likely in liquids, which have large particles, which separate out easily.
For example: yeast, waste water, or white water in the paper industry. To correct for any discrepancies
the instrument allows for both a Sensor Zero Adjustment and Sensor Span Adjustment.
Calibration Menu
The default security access code is 1000
Main Menu
From the front screen press the menu button to
show the main menu options and select Calibration.
/ – Select Option
EXIT
– Return to Front Screen
– Enter Option
Select Channel
Depending on the installed card select either the
Suspended Solids or Turbidity input channel you
wish to calibrate.
Note. Calibration is not available when units set to PS.
/ – Select Option
EXIT
– Return to Main Menu
– Enter Option
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