Xylem MPP 350 - Manual (Page 12)

Measuring / Operation MPP 350
12 ba75434e02 07/2005
4 Measuring / Operation
4.1 Calibration
4.1.1 Calibrating for D. O. measurement
To calibrate the D.O. module, use the OxiCal
®
-MPP calibration and storage
vessel (white). It is screwed on the sensor instead of the protective hood.
Make sure that the sponge in the calibration vessel is always moist.
Moisten the sponge:
! Unscrew the lid (1).
! Take out the sponge (2) out of the lid, wet it, then slightly squeeze it out.
! Reinsert the sponge and close the calibration vessel with the cap.
Note
Please read the further course of the calibration in the operating manual of
the meter.
4.1.2 Calibrating for conductivity and pH measurement
To calibrate the conductivity measuring cell or pH electrode, use the MPP-
CAL calibration vessel (transparent). Fill the calibration vessel with enough
buffer solution or conductivity control standard so that the solution at least
reaches the marking groove (1) when the calibration vessel is screwed on.
Thus the temperature sensor is always immersed in the solution and
calibration can be carried out correctly.
Note
Depending on the number of modules mounted, different filling quantities are
required for the solution to reach up to the marking groove (1) (minimum
filling level) so that the temperature sensor is immersed in the measuring
solution.
Note
Please read the further course of the calibration in the operating manual of
the meter.
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