Hanna Instruments HI 98108 User Manual
®®
®
pHep
®®
+
HI 98108
Pocket-sized pH Meter
with Automatic
Temperature Compensation
pHep+ is a rugged pH tester with replaceable
electrode and renewable reference junction. The
instrument can be calibrated at two points by
the user, simply acting on the offset and slope
calibration trimmers.
The Automatic Temperature Compensation feature enhables high accuracy in measurements.
CONDITIONING:
• Remove the cap.
• To activate the electrode, immerse it in
HI70300 storage solution for 2 hours.
CALIBRATION:
Perform one of the following two-point calibration
procedure, according to the required application:
Acid calibration for measurements below pH 7:
• Immerse the electrode in pH
7.01 (HI7007) buffer solution.
• Allow the reading to stabilize
and with a small screwdriver
turn the pH7 Calibration Trimmer until the display shows
"7.0".
• Rinse the electrode with tap water and immerse
it in pH 4.01 (HI7004) buffer solution.
• Allow the reading to stabilize and with a small
screwdriver turn the pH4/pH10 Calibration Trimmer until the display shows "4.0".
Alkaline calibration for measurements above pH 7:
• Immerse the electrode in pH 7.01 (HI7007) buffer
solution.
• Allow the reading to stabilize and with
a small screwdriver turn the pH7 Calibration Trimmer until the display shows "7.0".
• Rinse the electrode with tap water and immerse it in
pH 10.01 (HI7010) buffer solution.
• Allow the reading to stabilize and with a small
screwdriver turn the pH4/pH10 Calibration Trimmer
until the display shows "10.0".
• Stir gently and wait for the reading to stabilize.
• After use, rinse the electrode with tap water to
minimize contamination.
• Store the electrode with a few
drops of storage (HI70300) or
pH7 (HI7007) solution in the protective cap.
• Always replace the protective cap after use.
DO NOT USE DISTILLED OR DEIONIZED WATER
FOR STORAGE PURPOSES.
• Large differences in pH readings (±1 pH) could
be due to lack of calibration or dry electrode.
MAINTENANCE:
The sensor should be kept moist at all times. For this
purpose, always keep wet the tissue inside the
protective cap. In case of erroneous readings even
after an accurate conditioning and calibration, the
reference junction might be contaminated or clogged.
Pull out 2 mm (1/8'') of the
cloth junction to renew the
electrode reference (it is recommended to cut the cloth
leaving always at least 2
mm -1/8'' over the reference
compartment) and repeat the
calibration procedure.
The cloth junction can be pulled out approximately
20 times. After that, the electrode can be replaced
(see the Electrode Replacement section).
BATTERY REPLACEMENT:
If calibration can not be performed or the display
fades, batteries level is low and batteries must be
replaced. Slide off the battery compartment cover
and replace all four 1.5V batteries while paying
attention to their polarity.
0
0
3
0
I 7
H
Manufacturers since 1978
OPERATION:
• Remove the protective cap.
• Turn the meter on with the ON/OFF
switch located on the top of the meter.
• Immerse it in the solution to be tested
without exceeding the maximum immersion level.
Batteries should only be replaced in a nonhazardous
area using the battery type specified in this instruction
manual.
Visit our Internet Home Page:
http://www.hannainst.com
®®
®
pHep
®®
+
HI 98108
Pocket-sized pH Meter
with Automatic
Temperature Compensation
SPECIFICATIONS:
RANGE 0.0 to 14.0 pH
RESOLUTION 0.1 pH
ACCURACY
TYPICAL EMC DEVIATION ±0.1 pH
ENVIRONMENT
CALIBRATIONCALIBRATION
CALIBRATION Manual, at two points through
CALIBRATIONCALIBRATION
TEMP.COMPENSATION Automatic
BATTERY TYPE 4 x 1.5V alkaline (included)
BATTERY LIFE approx. 700 hours
DIMENSIONS 175 x 41 x 23 mm
WEIGHT 78 g (2.7 oz.)
ACCESSORIES:
HI 73108 Spare electrode
HI 77400P pH 4.01 & 7.01 calibration kit
HI 77700P pH 7.01 calibration kit
HI 770710P pH 7.01 & 10.01 calibration kit
HI 7004M pH 4.01 buffer solution
HI 7007M pH 7.01 buffer solution
HI 7010M pH 10.01 buffer solution
HI 70300M Storage solution (230mL)
HI 7061M Electrode cleaning solution
HI 731326 Calibration screwdriver (20 pcs)
(@20°C/68°F) ±0.1 pH
0 to 50C (32 to 122F); 95% RH
offset and slope trimmers
from 0 to 50ºC (32 to 122ºF)
of continuous use
(7.9 x 1.8 x 1")
(5 x 20 mL, each)
(10 x 20 mL)
(5 x 20 mL, each)
(230 mL bottle)
(230 mL bottle)
(230 mL bottle)
(230mL bottle)
IS98108-R1 09/01
ELECTRODE REPLACEMENT:
The electrode can be easily replaced in the following
way:
• Slide off the battery cover.
• Remove the screw on the back of the
located below the battery compartment and slide
off the whole internal part of the tester.
• To remove the electrode proceed as follows:
Remove the fastening screw on the front (1) to
loose the electrode. The internal circuit is connected to the electrode through four wires (one
for the glass sensor, one for the reference and
two for the temperature sensor). Remove the
two small screws (2, 3 & 4) which fasten the
four connecting wires to their sockets.
• Remove the electrode and replace it with a new
HI73108.
• Connect the new electrode as
follows:
first fasten the screw on the
front (1) to attach the electrode to the circuit. Insert
the four small wires into their
sockets and fasten the four
screws (2, 3 & 4).
• The new electrode is supplied
with four new O-rings (5). Make sure they are
placed properly (as shown on the above drawing) before reinserting the circuit into the
plastic casing.
• Reinsert the internal circuit with the new
electrode into the plastic casing.
• Fasten the screw on the back below the
battery compartment.
pHep+pHep+
pHep+
pHep+pHep+
HI73108
Internal circuit and electrode:
• Reinsert the battery compartment cover.
• Perform a new calibration before using the
pHep+ pHep+
pHep+ again.
pHep+ pHep+
ONE YEAR WARRANTY & SERVICEABLE:ONE YEAR WARRANTY & SERVICEABLE:
ONE YEAR WARRANTY & SERVICEABLE:
ONE YEAR WARRANTY & SERVICEABLE:ONE YEAR WARRANTY & SERVICEABLE:
Covered by
workmanship and materials, this tester is now completely
serviceable. Contact your dealer for further information.
The
50082-1, EN 50081-1 and EN 61010-1.
pHeppHep
pHep
pHeppHep
one yearone year
one year warranty against defects in
one yearone year
pHep+ pHep+
pHep+ is in compliance with the CE directives EN
pHep+ pHep+
®®
®
®®
is a registered Trademark of "Hanna Instruments"
Loading...