Evoqua Wallace & Tiernan Depolox 3 plus, Руководство пользователя

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WT.050.560.001.UA.IM.0714 50
Depolox
®
3 plus ReSIDUAl ANAlYZeR
eVoQUA W3T140188
• pH OFFSET Calibration
a. With sensor in flow block, test sample pH.
b. Press the
F
key until the “CALIBRATION” menu is displayed. Press the

key until the “pH offset” menu is found.
c. Press the  key.
d. Press

or

keys until the offset value is the difference of the displayed
pH value compared to the manually measured value. Store this value
using the

key. (Example: For pH7 solution, the basic display reads
7.15pH. The offset value will be adjusted to -0.15 because the value is
to come down from 7.15pH to 7.00pH.)
e. Return to the basic display by pressing the
eSC
key twice.
• pH Zero Calibration (Isothermal Intersection, pH7):
a. Starting at the basic display press the
F
key until the “CALIBRATION”
menu is displayed. Press the

key until the “pH zero” menu is found.
b. Withdraw the pH sensor. Fill 10 to 20 ml “pH7.00” buffer solution into
a 100 ml beaker. Dip the sensor at least 20mm deep in the buffer so-
lution pH7.00 and agitate lightly until the displayed pH value remains
constant.
c. Press the

key.
d. Press the

or

keys until the displayed value agrees with the value
of the pH buffer solution. Store this value using the

key.
• pH Span Calibration:
a. Rinse the sensor in distilled water (in order to avoid spreading the
buffer solution).
b. Press the key

until the “pH span” menu is reached.
c. Pour 10 to 20ml pH4 or pH10 buffer solution into another beaker. Dip
the pH sensor at least 20mm deep in the buffer solution and agitate
lightly until the displayed pH value remains constant. (In case another
buffer solution is used: the pH value of the buffer solution must be less
than pH6 or greater than pH8.)
d. Press the

key to open the “pH Span” menu.