Burkert Type 8619 - Manual (Page 93)

91
Adjustmentandcommissioning
8.11.8. calibrating a ph or redox sensor
Refer to chap. 8.9 to access Calibration menu.
Calibration pH auto calib.
Calib. log
Mx:pH/ORP
pH manual calib.
1st point
2nd point?
Rinse
2nd point
pH Cal.Result
YES
NO
pH calibration data
Last
Iso potential
VALUE
Iso potential
Zero ENTERING
Slope ENTERING
Iso pH
ENTERING
ENTERING
ORP calibration 1st point
ORP Cal.Result
ORP calib. data Offset ENTERING
ENTERING
Calib. interval
READING
Interval
→
Use one of the following 3 methods to calibrate a pH sensor:
• PH AUTO CALIBRATION: Automatically calibrate the pH sensor; first choose the buffer solution used in the
menu "Parameters -> Mx:pH/ORP -> Buffer". The multiCELL automatically recognizes the pH of the buffer
used. When a sensor is calibrated automatically, the most recent calibration date is updated (function "LAST" in
the sub-menu "CALIBRATION INTERVAL" below).
• PH MANUAL CALIBRATION: Calibrate the pH sensor using a 1- or 2-point procedure. See details on p. 84.
When a sensor is calibrated manually, the most recent calibration date is updated (function "LAST" in the sub-
menu "CALIBRATION INTERVAL" below).
• PH CALIBRATION DATA: Enter the zero values and the slope indicated on the certificate for the pH sensor, if
provided. This entry does not update the most recent calibration date (function "LAST" in the sub-menu "CALI-
BRATION INTERVAL" below).
→
Use one of the following 2 methods to calibrate a redox sensor:
• ORP CALIBRATION: Calibrate the redox sensor using a 1-point procedure. See details on page 94.
• ORP CALIBRATION DATA: Enter the offset value indicated on the certificate for the redox sensor, if provided.
CALIBRATION INTERVAL: Read the date of the most recent manual or automatic calibration and enter the
periodicity of calibration, in days: each time a calibration is due, the multiCELL generates a "maintenance" event,
signalled on the display by the icon , and a "warning" event, signalled on the display by the icon
. Configure
"0000 days" in order not to use the function.
• The "warning" event may be associated with one and/or other digital outputs (see chap. 8.10.22).
• See also "If you encounter problems", chap. 9.3
Type 8619
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