YSI IQ S ENSOR N ET VARiON Plus 700 IQ - Manual (Page 31)

VARiON
®Plus
700 IQ Matrix adjustment, check and calibration
4 - 1 ba76000e01 01/2012
4 Matrix adjustment, check and calibration
4.1 General information
Calibration free
operation
The VARiON
®Plus
700 IQ combination sensor is immediately ready to
measure after being equipped with electrodes. For precise
measurements, it is only necessary to adjust the electrodes to the
sample matrix ("matrix adjustment").With the recommended
application (see section 1.3 R
ECOMMENDED FIELDS OF APPLICATION ), the
measuring characteristics of the electrodes remain stable for their
entire service life. Thus, calibration is no longer required.
Possible changes of the sample matrix can be determined by
occasional comparison measurements (e.g. photometer) and
compensated for by a new matrix adjustment as necessary. The sensor
does not have to be taken out of the sample for this. At the same time,
a matrix adjustment provides information on the state of the electrodes.
Steps
Fig. 4-1 Schematic diagram
Start: press
Electrode
zeroing
Yes/No
Selection of procedure
Matrix adjustment Check Calibration
Procedures for special cases
(see section 4.3)
Calibration free operation
Yes if a new or different electrode is
commissioned