Hanna Instruments HI 983301N - Manual (Page 2)

OPERATIONAL GUIDE
TAKING MEASUREMENTS
• Turn the meter on by connecting the 12 Vdc power
adapter to the meter and to the mains.
• Immerse the tip (4 cm / 1½”)
of the probe in the sample.
Note: In order not to affect the
accuracy of measurements,
it is important that the
probe body does not touch
nor stand close to the side
walls of the vessel. The tip
may lay on the bottom of
the beaker.
• The LCD will show the EC or
TDS value. Any initial varia-
tion of reading may be due to
temperature compensation and
to the fact that the probe is
adjusting itself to the new
sample. Allow the reading to
stabilize and the meter will
start continuous monitoring.
PROBE MAINTENANCE
To minimize clogging and provide longer life for the probe,
it is recommended to clean it often or at least once a month.
• Immerse the tip of the probe in HI 7061 cleaning
solution for one hour or clean it with detergents used to
wash irrigation pipelines and fertilizer vessels.
• If a more thorough cleaning is required, brush the
metal pins with very fine sandpaper.
• After cleaning or before storing the probe, rinse it with
tap water.
For the greatest accuracy, frequent calibration of the instru-
ment is recommended.
• Pour a small quantity of the
indicated calibration solution in
a beaker:
1413 µS/cm for HI 983302N,
1500 ppm for HI 983301N or
1382 ppm for HI 983301N/5.
If possible, use plastic beakers to minimize any EMC
interference.
• Immerse the EC or TDS probe in the
solution, making sure that metal pins
are completely submerged.
Note: the probe should be submerged ap-
proximately 4 cm (1½”) in the solution
and it does not touch nor stand close
to the side walls of the beaker. The
tip can lay on the bottom of the
beaker.
• Wait for a couple of minutes for thermal equilibrium to
be reached.
• Tap the probe gently on the bottom, then shake it
while rotating to make sure no air bubbles have
remained trapped.
• Adjust the calibration trimmer
with the supplied screwdriver
until the display shows 1.41
(mS) for HI 983302N, 1500
(ppm) for HI 983301N or 1380
(ppm) for HI 983301N/5.
• The calibration is now complete and the instrument is
ready for use.
The meters should be recalibrated at least once a month
and after performing probe cleaning procedure.
CALIBRATION ACCESSORIES
HI 7632 * Conductivity probe with built-in temperature
sensor and 2 m (6.6’) cable
HI 7634 * Conductivity probe with built-in temperature
sensor and 2 m (6.6’) cable
HI 70031P 1413 µS/cm calibration solution, 20 mL sachet
(25 pcs)
HI 70442P 1500 ppm calibration solution, 20 mL sachet
(25 pcs)
HI 70032P 1382 ppm calibration solution, 20 mL sachet
(25 pcs)
HI 7031L 1413 µS/cm calibration solution, 500 mL bottle
HI 70442L 1500 ppm calibration solution, 500 mL bottle
HI 7032L 1382 ppm calibration solution, 500 mL bottle
HI 7061L Electrode cleaning solution, 500 mL bottle
HI 710005 12 Vdc power adapter, US plug
HI 710006 12 Vdc power adapter, European plug
HI 710012 12 Vdc power adapter, Australian plug
HI 710013 12 Vdc power adapter, Southern Africa plug
HI 710014 12 Vdc power adapter, UK plug
* To be replaced by authorized technical personnel only.
CE DECLARATION OF CONFORMITY
Recommendations for Users
Before using these products, make sure that they are entirely suitable
for the environment in which they are used.
Operation of these instruments in residential areas could cause unac-
ceptable interferences to radio and TV equipment.
The metal band at the end of the probe is sensitive to electrostatic dis-
charges. Avoid touching this metal band at all times.
During operation, ESD wrist straps should be worn to avoid possible dam-
age to the probe by electrostatic discharges.
Any variation introduced by the user to the supplied equipment may de-
grade the instrument’s EMC performance.
To avoid electrical shock, do not use these instruments when voltages at
the measurement surface exceed 24 Vac or 60 Vdc.
Use plastic beakers to minimize any EMC interferences.
To avoid damages or burns, do not perform any measurement in micro-
wave ovens.
ISECTDSGR R2 05/05