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  9. Milwaukee pH51 User manual

Milwaukee pH51 User manual

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pH51
Waterproof pH-meter
USER MANUAL
SPECIFICATIONS
Range
0.0 to 14.0 pH
Resolution
0.1pH
Accuracy(@20°C)
±0.1pH
Typical EMC Deviation
±0.1pH
Calibration
Manual, at 2 points
throughtrimmers
pHelectrode
MA73600or
(replaceable)
MA73600-S
Environment
0to50°C; 100% RH
Batterytype
3 x 1.5V, alkaline
Batterylife
morethan1500
hoursof continuous use
Dimensions
165 x 30 x 30 mm
Weight
80g
ACCESSORIES
MA73600 ReplaceablepHelectrode
MA73600-S ReplaceablepHlong
electrode
M10007B pH7.01 buffer solution,
20 mL sachet (25 pcs)
M10004B pH4.01 buffer solution,
20 mL sachet (25 pcs)
M10010B pH10.01buffer solution,
20 mL sachet (25 pcs)
M10000B Electroderinsesolution,
20 mL sachet (25 pcs)
MA9015 Electrodestoragesolution,
220mL bottle
MA9016 Electrode cleaning solution,
220mL bottle
This meter is in compliance with the CE directives.
ISTRPH51R2 05/03
CONDITIONING:
Remove the cap and immerse the
pH51
in
MA9015 storage solution for 2 hours to acti-
vate the electrode.
CALIBRATION:
Unscrew the battery compartment cap on the
top of the meter and perform one of the follow-
ing two-point calibration procedure, according
to the required application:
Acid calibration for measurements below pH7:
• Immerse the electrode in pH7.01
(M10007) buffer solution.
• Allow the reading to stabilize and
with a small screwdriver turn the
“7” calibration trimmer inside the
battery compartment until the dis-
play shows "7.0".
• Rinse the electrode with tap water
and immerse it in pH4.01 (M10004)
buffer solution.
• Allow the reading to stabilize and with a
small screwdriver turn the “4” calibration trim-
mer until the display shows "4.0".
Alkaline calibration for measurements above pH7:
• Immerse the electrode in pH7.01 (M10007)
buffer solution.
• Allow the reading to stabilize and with a
small screwdriver turn the “7” calibration trim-
mer until the display shows "7.0".
• Rinse the electrode with tap water and im-
merse it in pH10.01 (M10010) buffer solution.
• Allow the reading to stabilize and with a
small screwdriver turn the “4” calibration trim-
mer until the display shows "10.0".
Replace the battery compartment cap.
OPERATION:
• Remove the protective cap.
• Turn the
pH51
on by pressing the ON key.
• Immerse the electrode in the solution to be
tested.
• Stir gently and wait for the reading to
stabilize.
• After use, rinse the electrode with wa-
ter to minimize contamination.
• Store the electrode with a few drops of
storage (MA9015) or pH7 (M10007)
solution in the protective cap.
• Always replace the protective cap after use.
NEVER USE DISTILLED OR DEIONIZED WA-
TER FOR STORAGE PURPOSES.
ELECTRODE REPLACEMENT:
The electrode can be easily replaced in the
following way:
• Remove the protective cap.
• Unscrew the plastic ring on the top
of the electrode.
• Pull out the MA73600 (or
MA73600-S) pH electrode and re-
place it with a new one (aligning
the colored pin towards the LCD
side).
• Make sure the gaskets are in place
before screwing back the ring.
BATTERY REPLACEMENT:
pH51
is supplied with BEPS (Battery Error Pre-
venting System) which avoids any erroneous
reading due to low battery level, by switching the
meter off. To replace the batteries unscrew the
battery compartment cap and replace all three
1.5V batteries while paying attention to their po-
larity. Make sure the gasket is in place before
screwing back the cap.
Batteries should only be replaced in a nonhaz-
ardous area using the battery type specified in
this instruction manual.
WARRANTY:
This meter is warranted from all defects in materials and manufacturing
for a period of two years. The electrode is warranted for a period of
one year. During this period, the required repair or replacement of parts,
where the damage is not due to negligence or erroneous operation by the
user, will be effected free of charge.