Hanna Instruments HI 2209 User manual

Instruction Manual
HI 2209 • HI 22091
Bench pH Meters
www.hannainst.com

2
Dear Customer,
Thank you for choosing a Hanna Instruments Product.
Please read this instruction manual carefully before using these
instruments. This manual will provide you with the necessary information
for the correct use of these instruments, as well as a precise idea of
their versatility.
If you need additional technical information, do not hesitate to e-mail
us at [email protected] or view our worldwide contact list at
www.hannainst.com.
WARRANTY ................................................................................. 2
PRELIMINARY EXAMINATION ....................................................... 3
GENERAL DESCRIPTION ............................................................... 3
FUNCTIONAL DESCRIPTION ......................................................... 4
SPECIFICATIONS.......................................................................... 5
OPERATIONAL GUIDE .................................................................. 6
pH CALIBRATION ........................................................................ 8
pH BUFFER TEMPERATURE DEPENDENCE..................................... 10
ELECTRODE CONDITIONING AND MAINTENANCE .......................... 11
TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS ............ 14
ACCESSORIES ............................................................................ 15
ELECTRODE APPLICATION REFERENCE GUIDE ............................... 21
TABLE OF CONTENTS
HI 2209 and HI 22091 are guaranteed for two years against defects
in workmanship and materials when used for their intended purpose
and maintained according to instructions. Electrodes and probes are
guaranteed for six months. This warranty is limited to repair or
replacement free of charge.
Damage due to accident, misuse, tampering or lack of prescribed
maintenance 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 problem. 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 Technical
Service department and then send it with shipping costs prepaid.
When shipping any instrument, make sure it is properly packed for
complete protection.
WARRANTY

3
HI 2209 bench pH meter is designed for simplicity of use.
It features a large easy-to-read liquid crystal display (LCD)
and user friendly keyboard.
The pH calibration is made simple through the easy-to-operate
front panel knobs for offset and slope adjustment.
A front knob is provided for easy manual set for temperature
compensation of the pH reading.
HI 2209 can also measure ORP (Oxidation Reduction Potential)
in the mV range.
The range selection (pH, mV or °C for temperature compensation)
is made simple through the front membrane keyboard.
It is also available the model HI 22091 with recorder output
feature.
GENERAL DESCRIPTION
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 damage, notify your dealer.
Each meter is supplied complete with:
•HI 1332B plastic-body combination double-junction
refillable pH electrode with BNC connector and 1 m
(3.3') cable
•12 Vdc adapter
•Instruction manual.
Note:Save all packing material until you are sure that the
instrument functions correctly. All defective items must
be returned in the original packing with the supplied
accessories.

4
FUNCTIONAL DESCRIPTION
1) Liquid Crystal Display (LCD)
2) Temperature setting knob
3) °C range selection key
4) mV range selection key
5) pH range selection key
6) pH offset adjustment knob
7) pH slope adjustment knob
8) Sample holders
9) Analog output connectors (HI 22091 only)
10) BNC electrode connector
11) Reference electrode socket
12) Power adapter socket
13) ON/OFF switch
Front Panel
Rear Panel

5
SPECIFICATIONS
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6
4 cm
(1½")
POWER CONNECTION
Plug the supplied 12 Vdc adapter into the power supply socket
(#12 on page 4).
Note: Make sure the mains line is protected by a fuse.
ELECTRODE CONNECTION
For combination pH or ORP electrodes (with internal reference)
connect the electrode's BNC to the socket provided (#10 on
page 4).
For an electrode with a separate reference, connect the measuring
electrode's BNC to the BNC socket (#10 on page 4) and the
reference electrode's jack to the socket provided (#11 on
page 4).
Note: To prevent damage to the electrode, remove the pH
electrode from the solution before turning the meter off.
If the meter is OFF, detach the electrode from the meter
before immersing the electrode in the storage solution.
TAKING pH MEASUREMENTS
Make sure that the instrument has been calibrated for pH
before taking pH measurements.
•Put the beakers (bottles 50 or 100 mL) with the
solutions under test on the sample holders.
•Switch the instrument on by pressing the ON/OFF
switch.
•Press the pH key to display the pH measurement.
•Immerse the electrode tip (4 cm / 1½") into the
sample and shake briefly.
•Take the temperature of the solution with a
ChecktempC or a glass thermometer (e.g.25°C).
•Press and hold the Temp key to display temperature
setting on the LCD and adjust the temperature
knob to display the temperature of the sample.
OPERATIONAL GUIDE

7
•Release Temp key. The meter returns to pH range.
•The display shows the pH value of the test solution
compensated for temperature.
If measurements are taken in different samples successively, it
is recommended that the electrode be rinsed thoroughly for
better conditioning and to eliminate cross-contamination of
the sample.
For the rinsing process, it is recommended to use a liberal
amount of the next solution to be measured.
TAKING ORP MEASUREMENTS
HI 2209 and HI 22091 have the capability to take ORP
measurements, using an ORP electrode. Hanna Instruments
offers a variety of ORP electrodes for this purpose (see
accessories). Contact your Dealer for more information.
•Connect the ORP electrode to the meter and
submerge the tip (4 cm / 1½") into the
sample to be tested.
Note:ORP measurements are taken without temperature
compensation.
•Press the mV key to enter the mV mode. Allow
a few minutes for the reading to stabilize.
•The display will indicate the mV value (positive or negative).
AFTER MEASUREMENTS
•Press the ON/OFF switch to switch the instrument off.
4 cm
(1½")

8
HI 7004 HI 7007
HI 7004
IMPORTANT
The instrument's pH range should be re-calibrated:
•When the meter is new.
•Whenever the pH electrode is replaced.
•At least once a month.
•After use in aggressive chemicals.
•After cleaning procedure and changing the reference electrolyte.
•For greatest accuracy.
PREPARATION
Pour small quantities (up to 4 cm / 1½"
level) of pH 7.01 (HI 7007) and pH
4.01 (HI 7004) or pH 10.01 (HI 7010)
solution into clean beakers (or 100 mL
bottles). If possible use plastic beakers to minimize any EMC
interferences.
If you are measuring in the acid range, use pH 4.01 as second
buffer; if you are measuring in
the alkaline range, use pH 10.01
as second buffer.
For accurate calibration, use two
beakers for each buffer solution; the first for rinsing the
electrode, the second for calibration. In this way, contamination
of the buffer is minimized.
Note: The electrode should be submerged approximately 4 cm
(1½") into the solution.
Note: If you need to calibrate to NBS standards, use pH 6.86
(HI 7006) and pH 9.18 (HI 7009) instead of pH 7.01
and 10.01 respectively.
Use a ChecktempC or a glass thermometer as reference.
Put the beakers with the calibrations solutions on the beaker
holders on the top of the instrument.
PROCEDURE
•Switch the instrument on by pressing the
ON/OFF switch.
pH CALIBRATION
HI 7007
RINSE
HI 7007
CALIBRATION

9
4 cm
(1½")
•Rinse and immerse the pH electrode into pH
7.01 buffer and shake briefly. Wait for the
reading to stabilize.
•Note the temperature of the buffer solution
using a ChecktempC or a glass thermometer
(e.g. 20°C).
•Press and hold the Temp key to select
temperature setting.
•Adjust the Temperature knob until the LCD shows the
noted temperature.
•Release the Temp key. The instruments returns to pH
range.
•Wait a couple of minutes and adjust the Offset knob until
display shows the pH value at the noted temperature (see
the pH versus temperature chart).
•Rinse and immerse the pH electrode in pH 4.01 /pH 10.01
buffer and shake briefly.
•Wait a couple of minutes and adjust the Slope knob until
display shows the pH value at the noted temperature (see
the pH versus temperature chart).
•The pH calibration is now complete.

10
pH BUFFER TEMPERATURE DEPENDENCE
Temperature has an effect on pH. The calibration buffer
solutions are affected by temperature changes to a lesser
degree than normal solutions.
For manual temperature calibration please refer to the following chart.
For instance, if the buffer temperature is 25°C, the display
should show pH 4.01, 7.01 or 10.01 at pH 4, 7 or 10
buffers, respectively.
At 20°C, the display should show pH 4.00, 7.03 or 10.06.
The meter reading at 50°C will then be 4.06, 6.98 or 9.82.
PMET SREFFUBHp
Cº Fº 10.4 68.6 10.7 81.9 10.01
0 23 10.4 89.6 31.7 64.9 23.01
5 14 00.4 59.6 01.7 93.9 42.01
01 05 00.4 29.6 70.7 33.9 81.01
51 95 00.4 09.6 50.7 72.9 21.01
02 86 00.4 88.6 30.7 22.9 60.01
52 77 10.4 68.6 10.7 81.9 10.01
03 68 20.4 58.6 00.7 41.9 69.9
53 59 30.4 48.6 99.6 11.9 29.9
04 401 40.4 48.6 89.6 70.9 88.9
54 311 50.4 38.6 89.6 40.9 58.9
05 221 60.4 38.6 89.6 10.9 28.9
55 131 80.4 48.6 89.6 99.8 97.9
06 041 90.4 48.6 89.6 79.8 77.9
56 941 11.4 48.6 99.6 59.8 67.9
07 851 21.4 58.6 99.6 39.8 57.9
57 761 41.4 68.6 00.7 19.8 47.9
08 671 61.4 78.6 10.7 98.8 47.9
58 581 71.4 78.6 20.7 78.8 47.9
09 491 91.4 88.6 30.7 58.8 57.9
59 302 02.4 98.6 40.7 38.8 67.9