User Guide

pHel
pH electrodepH electrode
pH electrodepH electrode
pH electrode pHel
pH electrodepH electrode
pH electrodepH electrode
pH electrode pHel
pH electrodepH electrode
pH electrodepH electrode
pH electrode pHel
pH electrodepH electrode
pH electrodepH electrode
pH electrode
• Rinse the electrode with
water and dip it in a
sample of pH 4.01 (or
10.01 buffer from
HI 7710P Calibration
Kit ). Allow the reading
to stabilize.
• Adjust the pH 4/10 trim-
mer until the display reads
the chosen buffer value
(either "4.0" or "10.0").
• Calibration is now complete.
FOR BETTER ACCURACY,
ALWAYS USE FRESH
BUFFERS FOR CALIBRATION
& NEVER REUSE THEM.
Battery Replacement
Replace the batteries when the
display fades or pHel cannot be
switched on or segments are
missing.
• Solutions available for the cali-
bration, the maintenance, the
storage and the cleaning of the
electrode:
• HI 70300 Storage solution
• HI 7061 General cleaning
solution (soak for 30 min.)
• HI 7073 Protein cleaning
solution (soak for 15 min.)
• HI 7074 Inorganic cleaning
solution (soak for 15 min.)
• HI 7077 Oil and fat clean-
ing solution (soak several
times with clean solution)
• HI774P Calibration kit (pH
4.01 & 7.01 @ 25°C/77°F,
30 ml each)
•
HI777P Calibration kit (pH
7.01 @ 25°C/77°F, 2 x 30 ml)
• HI 7710P Calibration kit (pH
4.01 & 10.01 @ 25°C/77°F,
30 ml each)
Recommendations for Users
Before using this product, ensure that it is entirely
suitable for the environment in which it is used. Op-
eration of this instrument in residential area could
cause unacceptable interferences to radio and TV
equipments, requiring the operator to take all neces-
sary steps to correct interferences. The glass bulb at
the end of the electrode is sensitive to electrostatic
discharges. Avoid touching this glass bulb at all times.
During operation, ESD wrist straps should be worn
to avoid possible damage to the electrode by electro-
static discharges. Any variation introduced by the user
to the supplied equipment may degrade the
instrument's EMC performance. To avoid electrical
shock, do not use these instruments when voltages at
the measurement surface exceed 24VAC or 60VDC.
To avoid damages or burns, do not perform any mea-
surement in microwave ovens.
SPHEL 09/96
Stay in Touch with the Manufacturer!
Lift the battery
cover. Check the
polarity of the bat-
teries before re-
moving them. Insert
two new 1.4V bat-
teries the same
way. Battery re-
placement must
only take place in a
non hazardous area using the
battery types specified in this in-
struction manual.
Maintenance
• If the electrode remains dry for
a long period, before taking any
measurement or calibrating, it
is necessary to reactivate it by
dipping it into HI70300 solu-
tion for approximately 4 hours.
The electrode should be
cleaned after use and stored
with the cap on and some
HI70300 solution inside.