Hanna Instruments HI 83141V User manual

Instruction Manual
HI 83141V
Complete Portable Kit
for pH, mV & Temperature
Measurements in
Wine, Must and Grape Juice
www.hannainst.com
WARRANTY
All Hanna Instruments meters are warranted for two years against
defects in workmanship and materials when used for their intended pur-
pose and maintained according to instructions.
The electrodes and the probes are warranted for a period of six
months. This warranty is limited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed main-
tenance are not covered.
If service is required, contact the dealer from whom you purchased the
instrument. If under warranty, report the model number, date of purchase,
serial number and the nature of the failure.
If the repair is not covered by the warranty, you will be notified of the
charges incurred. If the instrument is to be returned to Hanna Instruments,
first obtain a Returned Goods Authorization Number from the Customer
Service department and then send it with shipment costs prepaid.
When shipping any instrument, make sure it is properly packaged for
complete protection.
Dear Customer,
Thank you for choosing a Hanna product.
Please read carefully this instruction manual before using the
meter. If you need additional technical information, do not
hesitate to e-mail us at [email protected].
This instrument is in compliance with the directives.
Remove the kit from the packing material and examine it
carefully to make sure that no damage has occurred during
shipment. If there is any damage, notify your dealer.
The kit includes:
• HI 83141 portable pH meter
• HI 1048B pH electrode
• HI 7669AW temperature probe
• pH 3 and pH 7 buffer solutions (20 mL sachet each)
• HI 700635 and HI 700636 specific cleaning solutions
• electrode refilling solution (30 mL bottle) and syringe
• 9V battery, screwdriver and instructions.
Note: Conserve all packing material until the instrument has
been observed to function correctly. Any defective item
must be returned in its original packing.
PRELIMINARY EXAMINATION
FUNCTIONAL DESCRIPTION SPECIFICATIONS
1) BNC connector for pH (or ORP) electrode.
2) Liquid Crystal Display.
3) mV key, to display the mV (ORP) readings when using
an ORP electrode or the mV equivalent to pH values
when using a pH electrode.
4) Trimmer for pH OFFSET calibration.
5) Trimmer for pH SLOPE calibration.
6) °C key, to display the temperature measurement.
7) pH key, to display the pH value.
8) ON/OFF key.
9) Socket for HI 7669AW temperature probe.
Range 0.00 to 14.00 pH / ±1999 mV
0.0 to 100.0°C
Resolution 0.01 pH / 1 mV / 0.1°C
Accuracy (@20°C/68°F)
±0.01 pH / ±1 mV / ±0.4°C
Typical EMC Deviation
±0.07 pH / ±5 mV / ±1°C
pH Calibration Manual, 2 point, through
offset (±1 pH) and slope (85 to 105%) trimmers
ORP Calibration Factory calibrated
Temperature Calibration Factory calibrated
Temperature Compensation
Automatic, from 0 to 70°C
Probes (included)HI 1048B pH-electrode
HI 7669AW temperature probe
Battery Type 1 x 9V, alkaline
Battery Life 100 hours of continuous use
Environment 0 to 50°C (32 to 122°F);
RH max 95% non-condensing
Dimensions 164 x 76 x 45 mm (6.5 x 3.0 x 1.8")
Weight 180 g (6.3 oz.)
ACCESSORIES
HI 1048B Glass body, double-junction, refillable pH elec-
trode with BNC connector and 1 m (3.3’) cable
HI 3131B Glass-body, refillable, platinum ORP electrode
with BNC connector and 1 m (3.3’) cable
HI 7669AW Temperature probe with 1 m (3.3’) cable
HI 5003 pH 3.00 buffer solution, 500 mL bottle
HI 5068 pH 6.86 buffer solution, 500 mL bottle
HI 5007 pH 7.01 buffer solution, 500 mL bottle
HI 70300L Storage solution, 500 mL bottle
HI 70635L Cleaning solution for wine deposits, 500 mL
HI 70636L Cleaning solution for wine stains, 500 mL
HI 7082 Electrolyte solution, 3.5M KCl, 4 x 30 mL bottle
HI 7091L Reducing pretreatment solution, 500 mL
HI 7092L Oxidizing pretreatment solution, 500 mL
HI 731326 Calibration screwdriver (20 pcs)
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.
RecommendationsforUsers
Before using this product, make sure that it is entirely suitable for the environment in which
itisused.Operationofthisinstrumentinresidentialareacouldcauseunacceptableinterference
to radio and TV equipment, requiring the operator to take all necessary steps to correct
interference.
The glass bulb at the end of the electrode is sensitive to electrostatic discharges. Avoid
touching this glass bulb at all times.
To maintain the EMC performance of equipment, the recommended cables noted in the
user's manual must be used. Any variation introduced by the user to the supplied equipment
may degrade the instruments' EMC performance.
Toavoidelectrical shock,donotusethese instrumentswhenvoltagesatthe measurementsurface
exceed 24 Vac or 60 Vdc.
To avoid damage or burns, do not perform any measurement in microwave ovens.
IST83141V 07/05

OPERATIONAL GUIDE
The meter is supplied complete with a 9V battery. Remove the
battery compartment cover on the back of the meter, install the
battery while paying attention to its polarity.
Always remove the electrode protective cap before taking any
measurements. If the electrode has been left dry, soak the tip in HI
70300 storage solution for half an hour to reactivate it.
Connect the pH electrode and the temperature probe to the proper
connectors on the top of the instrument.
Turn the meter ON by pressing the ON/OFF key.
To take pH measurements simply submerge the pH electrode
(at least 4cm/1½") and the temperature probe
(as close as possible to the electrode) into the
sample to be tested.
The temperature probe can be used inde-
pendently to take temperature measurements,
or it can be used in conjunction with the pH
electrode to utilize the meter's ATC capability.
Select the pH mode. Shake briefly and wait a
couple of minutes for the reading to stabilize.
The display will show the pH value automati-
cally compensated for temperature variations.
In order to take accurate pH measurements, make sure that the
instrument has been calibrated for pH before use.
If measurements are taken in different samples successively, it is
recommended to rinse the electrode thoroughly to avoid cross-
contamination. After cleaning, rinse the electrode with some of the
sample to be measured.
To take temperature measurements
make sure the temperature probe is connected
to the meter, immerse it in the sample to be
measured and press the °C key to enter the
temperature mode.
Note: If the temperature probe is not connected, the pH reading
will be compensated at 25°C.
To take ORP (mV) measurements connect an ORP electrode
(optional) to the BNC connector on the top of the meter, submerge
the tip (at least 4 cm/1½") into the solution,
enter the "mV" mode by pressing the mV key
and wait a few minutes for the reading to
stabilize.
The ORP (mV) and temperature ranges are factory cali-
brated. Contact the nearest Hanna Service Center for
recalibration, if needed.
For greatest accuracy, a frequent pH calibration is recom-
mended. The instrument should be recalibrated for pH whenever
the pH electrode is replaced, where extreme accuracy is required,
and at least once a month.
• Pour small quantities of pH7.01 (HI 5007) and pH3.00
(HI 5003) buffer solutions into two clean beakers.
For an accurate calibration use two beakers for each buffer
solution, the first one for rinsing the tip of the electrode, the
second one for calibration. If a calibration with NBS stan-
dards is needed, use pH6.86 (HI 5068) instead of pH7.01.
• Connect pH electrode and temperature probe to the meter
and switch it ON.
• Remove the protective cap, rinse the tips of pH electrode and
temperature probe with some pH7.01 solution. Immerse
them into pH7.01 buffer solution, stir gently and wait a
couple of minutes for stable reading.
Note: The electrode should be submerged approximately 4 cm
(1½") into the solution and the temperature probe should
be located as close as possible to the electrode.
• Press the °C key to display the temperature of the buffer
(e.g. 20°C). Then press the pH key to read pH values. Stir
gently and wait for a couple of minutes.
• Adjust the OFFSET trim-
mer on the lower left of
the front panel until LCD
shows the pH value at
the noted temperature.
•Rinse and immerse the pH electrode in pH3.00 buffer
solution (2nd calibration point) and stir gently.
• Wait a couple of minutes
and adjust the SLOPE trim-
mer on the lower right of
the front panel until the
LCD shows the pH value
at the noted temperature.
The pH calibration is now complete.
CALIBRATION
BATTERY REPLACEMENT
When the battery becomes weak, the meter
displays a blinking additional decimal point
on the left side of the LCD.
When the low battery indicator appears only a few hours of
battery life is remaining. A low battery level may also result in
unreliable measurements. It is recommended to replace the
battery immediately. Replacement must only take place in a safe
area and using an alkaline 9V battery.
Unscrew the 3 screws on the back of the meter, remove the
battery cover and replace the battery while paying attention to
its polarity.
TEMP pH VALUES
°C 3.00 7.01 6.86
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
3.07
3.05
3.03
3.02
3.00
3.00
3.00
3.00
2.99
2.99
2.99
2.99
2.99
2.99
3.00
7.13
7.10
7.07
7.04
7.03
7.01
7.00
6.99
6.98
6.98
6.98
6.98
6.98
6.99
6.99
6.98
6.95
6.92
6.90
6.88
6.86
6.85
6.84
6.84
6.83
6.83
6.84
6.84
6.85
6.85
pH VALUES AT
VARIOUS TEMPERATURES
ºC
pH ELECTRODE MAINTENANCE
Preparation
Remove the electrode protective cap. Do not be alarmed if any
salt deposits are present: this is normal with electrodes and they
will disappear when rinsed with water.
During transport tiny bubbles of air may have formed inside the
glass bulb. The electrode cannot function properly under these
conditions. These bubbles can be removed by "shaking down" the
electrode as you would do with a glass thermometer.
Sensitive bulb
To avoid clogging problems and ensure a fast response, the bulb
must be kept moist at any time. Store the electrode with few
drops of HI 70300 storage solution in the protective cap. NEVER
USE DISTILLED OR DEIONIZED WATER FOR STORING PURPOSES.
Periodic maintenance
Inspect electrode and cable. The cable used for the connection to
the meter must be intact and there must be no points of broken
insulation. The connector must be perfectly clean and dry. If any
scratches or cracks are present, replace the electrode.
Refilling the electrode
ALWAYS VERIFY THE ELECTROLYTE LEVEL.
If the electrolyte level is more than 2 cm below the refilling hole,
unscrew and remove the refilling hole cap.
Add the 3.5M KCl electrolyte solu-
tion (HI 7082) by using the
supplied syringe. Tighten back the
cap. Wait at least 1 hour before
using the electrode.
Cleaning procedure
After use, clean the electrode by immersing it in the proper
cleaning solution (HI 700635 or HI 700636) for 5 minutes.
If case of slow and unreliable readings, it is recommended to
perform the following procedure for cleaning the junction:
1. Shift upwards the PTFE collar. If the collar does not shift
easily, immerse it into warm water.
2. Wipe gently the electrode surface with a soft and clean tissue.
3. In case of persistent wine or must residual, wet the tissue with
cleaning solution (HI 700635 or HI 700636).
4. Put back the collar in its original position.