Hanna Instruments HI 931101 User manual

1
Instruction Manual
HI 931100 • HI 931101
Waterproof Instruments
for Salinity and Sodium
Content Measurements
www.hannainst.com

32
PRELIMINARY EXAMINATION
Remove the instrument from the packing material
and examine it carefully to make sure that no
damage has occurred during shipping. If there is
any noticeable damage, immediately notify your
dealer.
Each meter is supplied with batteries, rugged
carrying case and instructions
Note: Save all packing materials until you are sure
that the instrument functions correctly. All
defective items must be returned in the original
packing materials together with the supplied
accessories.
HANNAinstruments®hasdesignedthesetworugged
waterproofsalinityandsodiummetersforregular use
in the lab, as well as in harsh processing
environments.
HI931100isan ion-selectivemeterthatuses asodium
electrodetoreadthesalt (NaCl) content of a solution.
HI931100autoranges(4scalesavailable)fromsample
to sample allowing an extremely wide range of
measurementswithoutrecalibration.
HI 931101 employs the FC 300B combination
sodiumelectrodetoprovidesodiumreadingsfrom15.0
mg/L to 60 g/L.
The calibration is automatic at 2 points, the first is at
2.3g/Lwhilethesecondcanbeeitherat0.23g/L(low
range)or at 23.0 g/L(high range).
A separatetemperature probe, HI7662,providestem-
peraturereadingsfrom 0 to 80ºC.
GENERAL DESCRIPTION
Dear Customer,
Thank you for choosing a HANNA instruments®
product.
Please read this instruction manual carefully before
using the instrument.
If you need additional technical information, do not
hesitate to e-mail us at [email protected]
These instruments are in compliance with the
directives.
TABLEOFCONTENTS
Preliminary Examination...................................... 3
General Description ............................................. 3
Functional Description HI931100 ......................... 4
Specifications HI931100 ...................................... 5
Functional Description HI931101 ......................... 6
Specifications HI 931101 ..................................... 7
Operational Guide................................................ 8
Na Calibration (HI 931101)................................. 12
NaCl Calibration (HI 931100) ............................. 15
Special Applications & Additional Info ............... 18
Temperature Calibration ..................................... 21
FC 300B Conditioning & Maintenance............... 23
Battery Replacement ......................................... 26
Accessories....................................................... 27
Warranty ............................................................ 29
CE declaration of conformity ............................. 30

54
SPECIFICATIONS HI 931100FUNCTIONAL DESCRIPTION HI 931100
1. Battery compartment
2. BNC connector for electrode
3. Temperature probe socket
4. LCD (Liquid Crystal Display)
5. ON/OFF key, to turn the meter on or off
6. CAL key, to enter/exit calibration mode
7. CFM key, to confirm calibration
8. BUF key, to select calibration buffer value
Range 0.150 to 1.500 / 1.50 to 15.00 / 15.0 to 150.0
150 to 300 g/L NaCl
0.0 to 80.0°C
Resolution 0.001 / 0.01 / 0.1 / 1 g/L NaCl
0.1°C
Accuracy ±5% of reading (NaCl)
(@20°C) ±0.5°C
Typical EMC Deviation
±2% FS (NaCl) / ±0.5°C
Calibration Automatic, 1 or 2 point
at 3.00 g/L (HI 7083) and
0.30 g/L (HI 7085) or 30.0 g/L (HI 7081)
Temperature Compensation
25°C (77°F)
Electrode FC300B sodium electrode
with BNC and 1 m (3.3) cable (not included)
Temperature Probe
HI 7662 (not included)
Input Impedance 1012 Ohm
Battery Type / Life
4 x 1.5V AA / approx. 200 hours of use
Environment 0 to 50°C (32 to 122°F);
RH max 100%
Dimensions 196 x 80 x 60 mm
(7.7 x 3.1 x 2.4")
Weight 500 g (1.1 lb.)

76
SPECIFICATIONS HI 931101FUNCTIONAL DESCRIPTION HI 931101
Range 0.00 to 3.00 pNa
15.0 to 150.0 mg/L Na
0.150 to 1.500 / 1.50 to 15.00 / 15.0 to 60.0 g/L Na
0.0 to 80.0°C
Resolution 0.01 pNa / 0.1 mg/L Na
0.001 / 0.01 / 0.1 / 1 g/L Na
0.1°C
Accuracy ±0.05 pNa
(@20°C) ±5% of reading (Na)
±0.5°C
Typical EMC Deviation
±2% FS (pNa and Na) / ±0.5°C
Calibration Automatic, 1 or 2 point
at 2.3 g/L (HI 7080) and
0.23 g/L (HI 7087) or 23.0 g/L (HI 7086)
Temperature Compensation
25°C (77°F)
Electrode FC300B sodium electrode
with BNC an 1 m (3.3) cable (not included)
Temperature Probe
HI 7662 (not included)
Input Impedance 1012 Ohm
Battery Type / Life
4 x 1.5V AA / approx. 200 hours of use
Environment 0 to 50°C (32 to 122°F);
RH max 100%
Dimensions 196 x 80 x 60 mm
(7.7 x 3.1 x 2.4")
Weight 500 g (1.1 lb.)
1. Battery compartment
2. BNC connector for electrode
3. Temperature probe socket
4. LCD (Liquid Crystal Display)
5. ON/OFF key, to turn the meter on or off
6. CAL key, to enter/exit calibration mode
7. MODE key, to select Na or pNa range
8. CFM key, to confirm calibration
9. BUF key, to select calibration buffer value

98
For accurate readings, calibration should be per-
formed (or verified) every day if measuring the same
type of samples (e.g. cheese), or every time the
sample type is changed (e.g. cheese, meat, sea
water, etc.).
The recommended working temperature is around
20-25°C (68-77°F). For greater accuracy, perform
the calibration with standard solutions at a tempera-
ture as close as possible to the temperature of the
sample.
TAKING SODIUM MEASUREMENTS
Remove the protective cap from the
FC300B sodium electrode and, if
possible, rinse it with some of the
sample to be measured.
Shift downwards the rubber sleeve
(see picture) to have a properly work-
ing junction.
Immerse the tip of the FC300B elec-
trode (at least 2.5 cm/1") into the
sample to be tested while making
sure that the electrode junction is
completely immersed, and without
touching the bottom of the beaker.
Wait for approximately 10 to 15 minutes to allow
for the electrode to adjust and stabilize, i.e. until
no drifting is observed for at least a couple of
minutes.
During measurement, if possible,
the sample should be gently
stirred (100 rpm).
OPERATIONAL GUIDE
INITIAL PREPARATION
Each meter is supplied com-
plete with four 1.5V AA batter-
ies.
Remove the back cover, unwrap
the batteries and install them
while paying attention to their
polarity.
PROBE CONNECTION
Connect the FC300B sodium
electrode to the BNC socket on
the top of the instrument.
Connect the HI7662 tempera-
ture probe to the RCA socket.
The temperature probe can be
used independently to take tem-
perature measurements.
If the probe is not plugged in,
the secondary display shows
"25°C" with the "°C" indicator
blinking.
To switch the instrument on,
press and hold the ON/OFF key
for a fraction of a second.
These meters have a built-in protection against elec-
tromagnetic interferences and the holding of the
keys is to ensure that the commands are not mis-
taken for erroneous signals.
In order to take accurate measurements, make
sure the instrument is calibrated before use
(see "Calibration" sections for details).
gm
°C
NaCl
FC 300B
SODIUM
ELECTRODE
HI 7662N
TEMPERATUR
E
PROBE
MAGNETIC STIRRER
HI 190M
POWER
SPEED
ON
OFF MAX

1110
If the electrode is used rarely (once a month or
less), store it dry. Before using it again, let it
condition overnight in HI 7081 (30.0 g/L NaCl) or HI
7086 (23 g/L Na 1M)
To avoid very long response time, do not store
or rinse the electrode with deionized water. Do
not rub the electrode.
gm
°C
NaCl
TAKING pNa MEASUREMENTS (HI931101 only)
Press the MODE key during measurement to con-
vert the value displayed by the HI 931101 to pNa.
Note that
pNa = -log aNa
where aNa is the activity of ion Na.
Press the MODE key again to return to g/L mea-
surements.
TEMPERATURE MEASUREMENTS
Connect the temperature probe to
the meter and turn on.
Dip the HI 7662 temperature probe
into the sample. Allow the reading
to stabilize.
Note: The temperature is always
displayed on the secondary
LCD.
AFTER USE
Turn the meter off by pressing the
ON/OFF key again.
For faster and accurate measurements, the electrode
should be stored in a solution with a Na/NaCl concen-
tration similar to the sample to be measured.
After use, shift back upwards the
rubber sleeve (see picture).
°C
MODE

1312
SINGLE POINT CALIBRATION (OFFSET)
• Dip the FC300B sodium elec-
trode into the HI7080 (2.3g/L
Na) solution.
Note: Immerse the electrode
approximately 2.5 cm
(1") into the solution.
• Press the CAL key. The "CAL" and "BUF" indi-
cators will be displayed with the "BUF" and the
"" symbols blinking.
• As soon as the standard so-
lution is recognized, only the
"" symbol continues
blinking to indicate that the
electrode is stabilizing. The
required standard solution be-
ing value is displayed on the
primary LCD.
• As soon as the electrode sta-
bilized, the "CON" symbol ap-
pears on the display.
Press the CFM key to save
the calibration point. For best
results, wait for a couple of
minutes before confirming.
• HI 931101 will display "0.230
gm".
CAL
CFM
gm
°C
BUF
CAL
Na CALIBRATION (HI 931101)
Calibration can be performed at 1 (offset only) or 2
points.
For best accuracy, a 2 point procedure is recom-
mended.
PREPARATION
• Pour small quantities of
HI7080 (2.3 g/L Na) solution
and HI 7087 (0.23 g/L Na) or
HI 7086 (23 g/L Na) into two
beakers.
For accurate readings, use for the second point
the HI 7087 solution if you are going to measure
samples with low sodium content (below 2.3 g/
L), or the HI 7086 standard if you are going to
measure samples with high sodium content (over
2.3 g/L).
• For accurate calibration use
two beakers for each solu-
tion, the first one for rinsing
the electrode, the second one
for calibration.
If possible, use plastic beakers to minimize any
EMC interferences.
• Turn the meter on by press-
ing the ON/OFF key.
• Remove the protective cap and rinse the elec-
trode with some of the calibration solution you
are going to use first.
• Shift downwards the rubber
sleeve for a properly working
junction (see picture).
HI 7080 HI 7087
HI 7080
ON/OFF
HI 7080 HI 7080
RINSE CALIBRATION

1514
Wait for a couple of minutes
and then press the CFM key.
• The two point calibration procedure is now com-
pleted and the meter automatically returns to the
normal measurement mode.
CFM
• For exiting the calibration mode
and save the single point cali-
bration, press the CAL key. For
better accuracy however, it is
recommended to perform a 2
point calibration.
TWO POINT CALIBRATION
• After the first point is confirmed,
immerse the FC300B electrode
into the second standard solu-
tion: HI 7087 at 0.23 g/L Na or
HI 7086 at 23 g/L Na.
Note: The electrode should be
immersed approximately
2.5 cm (1") into the solu-
tion.
• Select the calibration value by
pressing the BUF key. Make
sure that the selected value cor-
responds to the solution being
used for the second calibration
point.
• If the reading is not close to the
selected calibration standard, the
"BUF" indicator will continue to
blink.
Otherwise, if the reading is close
to the selected calibration value,
the meter will recognize the stan-
dard solution and only the " "
symbol will blink, to indicate that
the reading is stabilizing.
• Once stabilized "CON" symbol
will appear on the display.
BUF
CAL
NaCl CALIBRATION (HI 931100)
Calibration can be performed at 1 (offset only) or 2
points.
For best accuracy, a two point procedure is recom-
mended.
PREPARATION
• Pour small quantities of
HI7083 (3.00 g/L NaCl) solu-
tion and HI 7085 (0.30 g/L) or
HI 7081 (30 g/L) into two clean
beakers.
For more accurate readings use for the second
poit the HI 7085 solution if you are going to
measure samples with low sodium chloride con-
tent (< 3 g/L), or the HI 7081 solution for samples
with high sodium chloride content (> 3 g/L).
• For an accurate calibration, use two beakers for
each solution, the first one for
rinsing the electrode, the sec-
ond one for calibration.
If possible use plastic beakers to minimize any
EMC interferences.
• Turn the meter on by press-
ing the ON/OFF key.
• Remove the protective cap and rinse the elec-
trode with some of the calibration solution you
are going to use first.
• Shift downwards the rubber
sleeve for a properly working
junction (see picture).
HI 7083 HI 7085
HI 7083

1716
• To quit the calibration and save
the first point, press the CAL
key.
For better accuracy however, it is recommended
that a two-point calibration is performed.
TWO POINT CALIBRATION
• After the first point is confirmed,
immerse the FC300B electrode
into the second solution:
HI7085 at 0.3 g/L NaCl or
HI7081 at 30 g/L NaCl.
Note: The electrode should be
immersed approximately
2.5 cm (1") into the so-
lution.
• Select the second point value
by pressing the BUF key. Make
sure that the selected value cor-
responds to the one being used
for the second calibration point.
• If the reading is not close to
the selected value, the "BUF"
symbol will blink.
Otherwise, if the reading is
close to the selected value, the
meter will recognize the stan-
dard solution. Only the " "
symbol will blink, to indicate
that the reading is stabilizing.
• Once stabilized "CON" symbol
will appear on the display.
For best results, wait for a
couple of minutes and press
the CFM key.
• The two point calibration is now
completed and the meter re-
turns to the normal mode.
CAL
BUF
SINGLE POINT CALIBRATION (OFFSET)
• Dip the FC300B sodium elec-
trode into the HI7083 (3.00 g/L
NaCl) solution.
Note: Immerse the electrode
approx. 2.5 cm (1") into
the solution.
• Press the CAL key. The "CAL" and "BUF" indi-
cators will be displayed with the "BUF" and the
"" symbols blinking.
• As soon as the standard solu-
tion is recognized, only the
"" symbol will continue
blinking to indicate that the elec-
trode is stabilizing.
The value of the standard solu-
tion being used will be displayed
on the primary LCD.
• As soon as the electrode is sta-
bilized, "CON" symbol lights up.
For best results, wait for a couple
of minutes before pressing the
CFM key.
• HI 931100 will then display "30.0
gm".
CAL
gm
°C
NaCl
BUF
CAL
CFM
CFM

1918
MAGNETIC STIRRER
HI 190M
POWER
SPEED
ON
OFF MAX
FILTERED
SOLUTIO
N
6. Wait for the reading to stabilize, i.e. no drift
should be observed for at least a couple of
minutes. Note the measured value.
7. Since the dilution rate is 1/10, the reading in the
g/L range has to be divided by 100 to get the
actual reading of NaCl (per gram of cheese or
meat), or the value can be considered directly
expressed in % of NaCl.
Note: A response time of 10 to 15 minutes for the
first measurement of cheese or meat, is the
correct expected time for the electrode to
stabilize. Next measurements of cheese or
meat samples will require shorter response
time (less than 2 minutes). Do not rinse the
sodium electrode between subsequent mea-
surements since contamination is negligible.
IONIC STRENGTH ADJUSTER (ISA)
When the NaCl concentration of the sample is lower
than 5 g/L, it is recommend to use the HI 7090 ISA
solution. In such case, calibration should be per-
formed with standard solution containing 2% of ISA.
ISA (Ionic Strength Adjuster) = 50% of NH4Cl 4M +
50% of NH4OH 4M (use 2 mL of ISA every 100 mL
of sample).
HOW TO MEASURE SODIUM CHLORIDE IN
CHEESE AND MEAT (HI931100)
1. Grind a sample of cheese or meat.
2. Pour a quantity (X g) in a glass beaker. Add
(X)x10 mL of deionized water (note: ignoring
water content of cheese and meat).
3. Cover the beaker to prevent any spilling during
stirring, place the beaker on a hot plate stirrer
and agitate the sample at 40-50°C (104-122°F)
for 15-20 minutes.
4. Let the sample cool to the ambient temperature,
then filter it.
5. Dip the FC 300B sodium electrode into the fil-
tered sample. The tip of the electrode should be
immersed for approximately 2.5cm/1" (i.e. the
electrode junction must be completely immersed)
without touching the bottom of the beaker. Dur-
ing measurement, the sample should be gently
stirred (100 rpm).
SPECIAL APPLICATIONS &
ADDITIONAL INFORMATION