Multi 197i Operation
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ba75339e04 07/2009
4.6 Calibration intervals (Int 3, Int 4, Int 5)
For each measured variable, a time interval is stored. When it has ex-
pired, you will be reminded to calibrate. After a calibration interval has
expired, the sensor symbol of the relevant measured variable flashes.
It is still possible to measure. By calibrating the relevant sensor, the
function is reset and the interval starts anew.
The following calibration intervals are set in the factory:
Setting the calibration
interval
You can change each of these intervals (1 ... 999 days):
Measured
parameter
Designation Default setting
pH/ORP Int 3 7 days
Dissolved
oxygen
Int 4 14 days
Conductivity Int 5 180 days
1 Switch off the measuring instrument.
2 Press the <M> key and hold it down.
3 Press the <ON/OFF> key.
The display test appears briefly on the display. After this, the
measuring instrument automatically switches over to configu-
ration.
4 Press the <RUN/ENTER> key repeatedly, until Int 3 ... 5 to-
gether with the required measured variable (pH, O
2
or ) ap-
pears. Example:
5 Set the required interval until the next calibration with <▲>
<▼>.
6 Confirm with <RUN/ENTER>.
7 Switch to the measuring mode with <M>.
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