Hanna Instruments HI 2210 User manual

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Instruction Manual
Microprocessor-based
pH/mV/°C
Bench Meters
HI 2210 HI 2211
www.hannainst.com

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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 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.
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner.

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HI 2210 and HI 2211 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 accidents, misuse, tampering or lack of prescribed
maintenance is 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
PRELIMINARY EXAMINATION ........................................................ 4
GENERAL DESCRIPTION ................................................................ 4
FUNCTIONAL DESCRIPTION .......................................................... 5
SPECIFICATIONS........................................................................... 6
OPERATIONAL GUIDE ................................................................... 7
pH CALIBRATION ....................................................................... 10
TEMPERATURE CALIBRATION (for technical personnel only)........... 13
pH BUFFER TEMPERATURE DEPENDENCE...................................... 15
ELECTRODE CONDITIONING AND MAINTENANCE ........................... 16
TROUBLESHOOTING GUIDE ........................................................ 19
TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS ................. 20
ACCESSORIES ............................................................................. 21
TABLE OF CONTENTS
WARRANTY

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The Hanna HI 2210 and HI 2211 are microprocessor based pH and
temperature bench meters.
HI 2211 can also be used for ion concentration (ISE) and Oxidation
Reduction Potential (ORP) in the mV range.
pH measurements are compensated for temperature effect manually or
automatically with the HI 7662temperature probe.
The instrument is equipped with a large easy-to-read LCD which shows
the pH (or mV) and temperature simultaneously, together with graphic
symbols.
A stability indicator makes the calibration procedure error free.
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 or the nearest Hanna
Customer Service Center.
Each instrument is supplied with:
•HI 1131B Glass-body Combination pH Electrode
•HI 7662 Temperature Probe
•HI 76404N Electrode Holder
•pH 4.01 & 7.01 Buffer Solutions, 20 mL each
•HI 7082 Electrolyte Solution
•HI 700661 Cleaning Solution
•12 VDC Power Adapter
•Instruction Manual
Note:Save all packing material until you are sure that the
instrument functions correctly. All defective itemsmust be
returned in the original packing with the supplied accessories.
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION

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Front Panel
1) Liquid Crystal Display (LCD).
2) CAL key, to enter and exit calibration mode.
3) CFM key, to confirm different values.
4) °C and °C keys, to manually increase/decrease tem-
perature or select pH buffer.
5) RANGE key, to select measurement range (HI 2211 only).
6) MEM key, to store a value into memory.
7) MR key, memory recall.
8) Secondary LCD.
9) Primary LCD.
10) ON/OFF switch.
11) Power adapter socket.
12) BNC electrode connector.
13) Temperature probe socket.
14) Electrode reference socket.
Rear Panel
FUNCTIONAL DESCRIPTION

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SPECIFICATIONS
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POWERCONNECTION
Plug the 12 VDC adapter into the power supply socket.
Notes:•These instruments use non volatile memory to retain the
pH, mV, temperature calibrations and all other settings,
even when unplugged.
•Make sure a fuse protects the main line.
ELECTRODEANDPROBECONNECTIONS
For pH or ORP combination electrode connect to the BNC connector on
the back of the instrument.
For electrodes with a separate reference connect the electrode’s BNC to the
BNC connector and the reference electrode plug to the reference socket.
For temperature measurements and automatic temperature compensation
connect the temperature probe to the appropriate socket.
INSTRUMENT START-UP
•Turn the instrument on by pressing the ON/OFF switch located
on the rear panel.
•All LCD segments are displayed while the instrument performs a
self test.
pH MEASUREMENTS
Make sure the electrode and the instrument have been
calibrated together before taking pH measurements.
•Submerse the electrode and the temperature
probe approximately 3cm (1¼”) into the sample
to be tested and stir gently. Allow time for the
electrode to stabilize.
•The pH is displayed on the primary LCD and the temperature on
the secondary LCD.
•If the pH reading is out of range, the closest full scale value will
be displayed blinking on the LCD.
OPERATIONAL GUIDE
3 cm
(1¼")

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If measurements are taken successively in different samples, it is
recommended to rinse the electrode thoroughly with deionized water
or tap water and then with some of the next sample in order to
prevent cross-contamination.
The pH reading is affected by temperature. In order to measure the
pH accurately, thetemperature effect must be compensated for.
To use the Automatic Temperature Compensation feature, connect
and submerse the HI 7662 temperature probe into the sample as
close as possible to the electrode and wait for a few seconds.
If the temperature of the sample is known, manual temperature
compensation can be used by disconnecting the temperature probe.
The display will show the last recorded
temperature reading with the “°C” tag blinking.
The temperature can now be adjusted with
the ARROW keys (from -20.0 °C to 120.0 °C).
ORPMEASUREMENTS(HI2211 only)
An optional ORP electrode must be used to perform ORP measurements
(see Accessories).
Oxidation-reduction potential (REDOX) measurements provide the
quantification of the oxidizing or reducing power of the tested sample.
The surface of the ORP electrode must be clean and smooth in order to
obtain an accurate measurement.
•Press RANGE to enter mV range.
•Submerse the tip of the ORP electrode 3 cm
(1¼") into the sample to be tested and allow a
few seconds for the reading to stabilize.
•The instrument displays the mV reading on the primary LCD and
the temperature on the secondary LCD.
•If the reading is out of range, the closest full scale value will be
displayed blinking on the LCD.
3 cm
(1¼")

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TEMPERATUREMEASUREMENTS
Connect the HI 7662 temperature probe to the TEMP
socket and turn the instrument on.
Submerse the temperature probe into the sample and
allow the reading on the secondary LCD to stabilize.
MEMORYFUNCTION
Press and hold down MEM key to store the last reading in the
meter’s memory. The “MEM” tag will be displayed.
Press MR (memory recall) key to display the memorized reading.
The “MEM” tag will be displayed.

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Calibrate the instrument often, especially if high accuracy is required.
The instrument should be recalibrated:
•Whenever the pH electrode is replaced.
•At least once a week.
•After testing aggressive chemicals.
PREPARATION
Pour small quantities of the buffer solutions into clean beakers. If
possible use plastic or glass beakers to minimize any EMC interferences.
For accurate calibration and to minimize cross-contamination, use two
beakers for each buffer solution:one for rinsing the electrode and one for
calibration.
If you are measuring in the acidic range, use pH 7.01 or pH 6.86 as
first buffer and pH 4.01 as second buffer. If you are measuring in the
alkaline range, use pH 7.01 or pH 6.86 as first buffer and pH 10.01
or pH 9.18 as second buffer.
PROCEDURE
A two-point calibration is recommended however a one-point calibration
will be permitted. Calibration can be performed using the five
memorized buffers:
•pH 4.01, 6.86, 7.01, 9.18 and 10.01.
TWO-POINT CALIBRATION
•Submerse the pH electrode and the temperature
probe approximately 3 cm (1¼") into a buffer
solution and stir gently. The temperature probe
should be close to the pH electrode.
•Press CAL. The “CAL” and “ ” messages will appear and
“7.01” buffer will be displayed on the secondary LCD.
•If necessary, press the ARROW keys to select a different buffer value.
•The “ ” symbol will blink on the LCD until the reading is stable.
3 cm
(1¼")
pH CALIBRATION