Hanna Instruments ph 300 Manuel D’Utilisation
21
20
Allow 1 or 2 minutes for
the electrode to stabi-
lize.
the electrode to stabi-
lize.
pH is displayed on the
primary display and tem-
perature on the second-
ary one.
primary display and tem-
perature on the second-
ary one.
If readings are out of
range "---" will appear
on the LCD display.
range "---" will appear
on the LCD display.
For pH 301 only:
Press the .00/.000 key to change the resolu-
tion from two to three decimal points.
tion from two to three decimal points.
It is recommended that the electrode is rinsed
thoroughly for better conditioning. For this
rinsing process, it is recommended to use a
liberal amount of the sample to be measured.
thoroughly for better conditioning. For this
rinsing process, it is recommended to use a
liberal amount of the sample to be measured.
If measurements are taken in different samples
successively, it is recommended that the elec-
trode and the temperature probe are rinsed
thoroughly with deionized water or distilled
water (if not available, tap water may also be
used) and then blot dry between each mea-
surement.
successively, it is recommended that the elec-
trode and the temperature probe are rinsed
thoroughly with deionized water or distilled
water (if not available, tap water may also be
used) and then blot dry between each mea-
surement.
The pH reading is directly effected by tem-
perature. In order for the meter to measure
the pH accurately, temperature must be taken
into consideration.
perature. In order for the meter to measure
the pH accurately, temperature must be taken
into consideration.
A perfect equilibrium between the pH elec-
trode and the sample is reached in approxi-
mately 15 minutes.
trode and the sample is reached in approxi-
mately 15 minutes.
To use the meter's Automatic Temperature
Compensation feature, submerge the
HI7669/2W temperature probe into the sample
Compensation feature, submerge the
HI7669/2W temperature probe into the sample
°C
pH
pH
0.00/0.000
°C
pH
SETTING THE DATE AND THE TIME AND
THE LOGGING INTERVAL (for pH 302 only)
THE LOGGING INTERVAL (for pH 302 only)
See program No. 1 (page 60).
VIEWING THE DATE AND THE TIME (for
pH 302 only)
pH 302 only)
Press TIME to display the time (HH/MM).
Press TIME again to display the date (MM/
DD).
DD).
TAKING pH MEASUREMENTS
Make sure that the instrument has been cali-
brated for pH before taking pH measure-
ments (see page 29).
brated for pH before taking pH measure-
ments (see page 29).
For pH 300 and pH 302 only:
Select the pH measurement mode
by pressing RANGE.
by pressing RANGE.
For pH 301 only:
Select the pH measurement
mode by pressing pH.
mode by pressing pH.
To take a pH measurement
simply submerge the tip (4cm/
1½") of the pH electrode and
the temperature probe into the
sample to be tested.
simply submerge the tip (4cm/
1½") of the pH electrode and
the temperature probe into the
sample to be tested.
TIME
TIME
DATE
RANGE
pH
4 cm
(1½")