Xylem Multi 3620 IDS, Руководство по эксплуатации

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pH value Multi 3620 IDS
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sensor evaluation by means of a pointer.
In the printout, the sensor evaluation is quoted as a percentage (1-100).
The finely graded sensor evaluation of the QSC function promptly calls your
attention to changes of the sensor.
Thus you can do what is necessary to restore the optimum measuring quality
(e.g. clean, calibrate or replace the sensor).
Sensor evaluation
with / without
QSC function
QSC calibration The QSC function is enabled by once carrying out an additional three-point cali-
bration with special QSC buffer solutions. It covers the measuring range of the
sensor (pH 2 to pH 11). The QSC initial calibration determines the actual condi-
tion of the sensor and stores it as a reference in the sensor.
To meet the high requirements of a QSC initial calibration, the QSC initial cali-
bration should optimally be carried out with the initial commissioning of the
sensor.
Carry out the normal calibrations for your special measuring range with your
usual standard solutions as previously done.
1 QSC scale
The double arrow on the QSC scale indicates the current sensor
evaluation
1
01.02.2014 08:00
Info
With QSC function Without QSC function (sensor
symbol)
Very fine grading of the sensor
evaluation (100 grades) Rough grading of the sensor evalua-
tion (4 grades)
The reference value is individually
determined for each sensor during
the QSC initial calibration. A theoretical reference value is used
for all sensors
Low tolerances for zero point and
slope when using QSC buffer solu-
tions Greater tolerances for zero point
and slope when using commercial
buffer sets
Additional QSC calibration
required (with special QSC buffer
set) No additional calibration required