Endress+Hauser Viomax CAS51D, Руководство по эксплуатации

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Viomax CAS51D Operation
Hauser 29
2. Activate the new data record. (in the Setup menu)
3. Set the desired factor. (in the CAL menu)
4. Set your device to the desired measured variable. (in the Setup menu)
Operating Instructions Memosens inputs BA01245C.
The SAC sensor can be calibrated for the measured variables SAC, COD, TOC, BOD and
DOC.
If the sensor has been calibrated for the measured variable SAC, the conversion factors for
COD, TOC, BOD or DOC can be adjusted at a later stage. If calibrated for TOC, COD, BOD or
DOC, only the factor for the measured variable in use can be changed subsequently.
Avoid incorrect measurements.
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Drinking water contains many organic elements. The use of fully ionized water as a
blank is also recommended here.
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During calibration, make sure the medium is homogeneous.
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Avoid any carryover of organic elements during calibration.
Processes with widely varying SAC values
Record calibration points for different operating statuses. Example of a WWTP inlet:
• After a rainy spell
• In "normal conditions"
• After a dry spell
1. Save the points in a data record of your choice and add the associated laboratory
results.
2. Activate the calibration once you have set a sufficient number of points.
While this type of calibration can be more time-consuming, it allows the precise
adjustment of the measurement technology to the operating conditions of the plant.
7.1.7 Calibrating and adjusting the sensor
To calibrate the sensor, use the same medium sample or sample array that you used to
determine the laboratory measured values. The sample array can also be pure standard
solutions.
1. Select a data record.
2. Put the sensor into the medium.
3. During calibration, make sure the medium is as homogeneous as possible.
4. Start the calibration for the measuring point.
5. If you wish to calibrate just one point:
End the calibration by accepting the calibration data.
 Otherwise continue with the next step.
6. Add parent solution to the sample for the 2nd measuring point and determine the
measured value. The reference value is calculated from the laboratory measured
value plus the added concentration.
7. Repeat the previous step as often as needed until you have the desired number of
calibration points (max. 5).
To avoid incorrect calibration from carryover:
• Always go from a low concentration to a high concentration.
• Clean and dry the sensor after each measurement.
• Make sure to remove medium residue in the sensor gap and in the connection opening
for the compressed air (e.g. by rinsing with the next calibration solution).