Evoqua WALLACE & TIERNAN SFC, Оригинальное руководство пользователя

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SFC
Operation
6.
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6.4.7 Fluoride calibration
The fluoride measurement is calibrated at 2 points, which should
be as far from each other as possible, but within the measurement
range. The lower value must be calibrated with a lower fluoride
concentration than the upper value, e.g. lower value 0.20 mg/l and
upper value 2.00 mg/l.
Calibration solutions for 0.20 mg/l, 2.00 mg/l and 100 mg/l are
available.
Please note
Before use, the electrode must be placed in a 100 mg/l fluoride
solution at pH 7 for approx. 24 hours. This is necessary to
guarantee that the electrode functions properly.
1 Starting from the basic display, from the main menu, select the
„Calibration“ menu.
2 Select menu item „Fluoride“ and confirm with „Enter“.
3 10 – Fill 20 ml of the lower concentrated standard solution in
one of the supplied beakers and place in the bottom clip. Dip
the electrode at least 2 cm.
4 Select „Cal. lower value“ in the menu, and press „Enter“.
5 Confirm the selection with „Enter“ and enter the value of the
calibration solution using the arrow keys. Wait until the
displayed measured value no longer changes.
6 Save the value by pressing the „Enter“ key.
7 Press „Back“ and select the menu „Cal. upper value“. Confirm
by pressing „Enter“.
8 Wash electrode with distilled water and fill 10 – 20 ml of the
higher concentrated standard solution into one of the supplied
beakers. Dip electrode.
9 Confirm the selection with „Enter“ and enter the value of the
calibration solution using with the arrow keys and wait until the
displayed measured value no longer changes.
10 Save the value by pressing the „Enter“ key.
11 Place the sensor in the flow-through adapter again.
This concludes the fluoride calibration.