Focustronic Alkatronic, User Manual

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Test pump accuracy
This function allows you to control the calibration status of
the pump, for instance to help decide if there is a need to
recalibrate the pump.
When you press this button, test pump accuracy, you test
the accuracy of the latest calibration of pump A, C or D.
Before pressing the button to start the test, take out the
pipe from the probe holder from the pump you want to
check, and place that pipe in a proper measure cylinder.
Then press ”test pump (A,C,D)” of the pump you aim to
test, and the pump will start and stop after a certain
time. Read the delivered volume in the test vial. Ideally, the
delivered fluid volume should be the following:
• Pump A:49.5-50.5 ml
• Pump C:9.9-10.1 ml
• Pump D:9-11 ml
If the delivered volume deviates from the above intervals, go to calibrate and
recalibrate that pump!
Test pH-electrode accuracy
If you correctly calibrate the electrode every 6
months, you should rarely need this function.
When you press this button, test pH-electrode
accuracy and then push start, you will see a
continuous pH reading on the LCD screen.
You can now easily check if the pH electrode is accurate or needs recalibration.
Carefully rinse the electrode in RO or distilled water, wipe it o
ff , and place it in a
solution with a known pH. Then compare the expected value with the reading on the
LCD.
This function will help you decide if there is a need to recalibrate the pH electrode.
If
you correctly calibrate the electrode every 6 months, you should rarely need
this function.
LCD-Screen
On the LCD-screen there is some basic info. Between measurements the machine is
in standby mode and will always show the last measured dKH-value, when the next