WT.050.560.001.UA.IM.0714
52
Depolox
®
3 plus ReSIDUAl ANAlYZeR
eVoQUA
W3T140188
c. Press the
key.
d. Press
or
keys until the offset value is the difference of the dis-
played fluoride value compared to the manually measured fluoride
solution value. Store this value using the
key. (Example: The flow is
measured at 0.20 mg/l fluoride solution. The basic display reads 0.28
mg/l fluoride. The offset value will be adjusted to “- 0.08 mg/l fluoride”
because the value is to come down from 0.28 mg/l to 0.20 mg/l.)
e. Return to the basic display by pressing the
eSC
key twice.
• Calibration at 0.20 mg/l:
a. Starting at the basic display press the
F
key until the “CALIBRATION”
menu is displayed. Press the
key until the “Fluor zero” menu is found.
b. Withdraw the fluoride sensor. Fill 10 to 20 ml “0.20 mg/l” buffer solu-
tion into a 100 ml beaker. Dip the sensor at least 20mm deep in the
buffer solution 0.20 mg/l and agitate lightly until the displayed value
remains constant.
c. Press the
key.
d. Press keys
or
until the displayed value agrees with the value of
the buffer solution. Store this value using the
key.
• Calibration at 2.00 mg/l:
a. Rinse the sensor in distilled water (in order to avoid spreading the
buffer solution).
b. Press the key
until the “Fluor span” menu is reached.
c. Fill 10 to 20ml “2.00 mg/l” buffer solution into another beaker. Dip the
fluoride sensor at least 20mm deep in the buffer solution and agitate
lightly until the displayed value remains constant.
d. Press the
key to open the “Fluor Span” menu.
e. Press keys
or
until the displayed value agrees with the value of
the buffer solution. Store this value using the
key. The measuring
cell is now calibrated.
f. Refit the sensor into the flow block.
g. Dispose of the buffer solutions, rinse with enough water.
h. Return to the basic display by pressing the
eSC
key twice.
Summary of Contents for Wallace & Tiernan Depolox 3 plus
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