740 Portable Suspended Solids
10.2.3 Calibration Intervals
The 740 Monitor and Sensor combination once calibrated will require calibration
checking/re-calibration at 3-6 monthly intervals, however this does depend on the
application. The calibration of the instrument can be effected by seasonal variations in
the measured effluent, however only knowledge of the application can determine the
re-calibration interval required.
10.3 Preparing for Calibration
To ensure that calibration will be as successful as possible the following should be
observed:
1. Clean the whole sensor and at least 1 metre of cable.
2. The zero solution should be clean settled tap water for high range measurements
and freshly distilled or de-mineralised water for low range measurements.
3. A calibration solution will be required, ideally this should be greater than 75% of
the intended measurement range.
10.4 Calibration Wizard
The 740 Calibration Wizard guides the user through the important process of
calibrating the instrument. Once the setup wizard has been completed, the instrument
should respond to changes to the sensor signal (for example placing the sensor into
the zero solution and then into the calibration solution). Although the instrument is
responding, the factory default calibration values are used until user calibration is
carried out.
Before using the calibration wizard, the guideline described in the preparation for
calibration section above should be observed. Also ensure that the correct display
range and units have selected.
Page 26 of 46 172430IM-Iss07 Issue Date 23/10/2014
To Next Page
Loading...
Need help?
General
