30
ENGLISH
Autodos M
MA60-10E
ENGLISH
Autodos M
MA60-10E
Calibration - redox
The redox value is only calibrated at one measuring point. No reinforcement calibration is necessary for redox electrodes.
The calibration can be done at any known redox value. The calibration value is adju/- 50mV relative to the uncalibrated
redox value.
1. Activate calibration mode by pressing the button
Cal.
[0] until the diode ”
Active
” is lit.
2. Put the cleaned and rinsed redox electrode in a reference liquid with known redox value. Let the measured value stabilise.
3. Press the button
Cal.
[0] until the diode ”
Adjust
” is lit. The equipment then stores the latest measured electrode signal.
4.
Adjust the redox value with the buttons ↑ and ↓ under display 2 according to the current reference liquid.
5. Exit calibration mode by pressing the button
Cal.
[0] until the diode ”
Adjust
” is shut off.
6. Reinstall the electrode into the valve. Let the measured value stabilise for around one hour.
7. Activate dosage mode.
10. Calibration
To access calibration mode, authorization level 1 is required at a minimum, i.e. the “
Code
” LED must be illuminated or flash.
During calibration, no settings can be made and high alarm, low alarm and flow alarm are not activated. Automatic dosing is
stopped during calibration.
Calibration mode “
Active
” is accessed by pressing and holding the
Cal.
button [0] until the “
Active
” LED illuminates. Dosing
stops automatically during calibration and output signals on the current outputs are frozen at the last measured value before
calibration.
In calibration mode “
Active
” calibration of pH7, pH9 and chlorine zero points is possible.
Calibration mode “
Adjust
” is accessed by pressing and holding the
Cal.
button [0] until the “
Adjust
” LED illuminates (presuming
the “
Active
” is already lit). If combination with pH exists, no pH value is displayed. “- - -” is instead displayed to indicate that pH
calibration is not possible.
Calibration mode “
Off
” is accessed by pressing and holding the
Cal.
button [0] until the “
Adjust
” and “
Active
” LEDs go out.
To exit code mode, press the
Code
button [10]. The LED goes out as confirmation.
Calibration - pH
Calibration is done at two points – normally pH7 and pH9.
1. Activate calibration mode “
Active
”.
2. Take the cleaned and rinsed pH electrode and place it in the pH7 calibration solution (not in the buffer bottle).
Move the electrode up and down for a good reading. Give the measurement value time to stabilize (5-30 seconds).
Then press the calibration button
pH7
[8] until the display shows “- - -”.
3. Rinse the electrode and then place it in the pH9 calibration solution (not in the buffer bottle). Move the electrode up and down
a little for a good reading. Give the measurement value time to stabilize (5-30 seconds). Then press the calibration button
pH9
[9] until the display shows “- - -”.
4. pH calibration is complete. Exit calibration mode by pressing the
Cal.
button [0] twice until the “
Adjust
” and “
Active
” LEDs
go out.
5. Discard used buffer solution after calibration.
NOTE: If the signal during two points calibration deviates too greatly from the expected values, electrode error is
indicated with the text “
EL1
”, “
EL2
”, “
EL3
” or “
EL4
” while the calibration button is held depressed.
When the button is released, Autodos M uses the calibration values that applied before the failed calibration attempt.
Text meaning:
EL1
active electrode error 1 (low calibration point < min)
EL2
active electrode error 2 (low calibration point > max)
EL3
active electrode error 3 (high calibration point < min)
EL4
active electrode error 4 (high calibration point > max)
