Hanna Instruments HI 2210 User manual

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Instruction Manual
Microprocessor-based
pH/mV/°C
Bench Meters
HI2210 HI2211
www.hannainst.com

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Dear Customer,
Thank you for choosing a Hanna Instruments Office 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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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

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The Hanna Instruments HI2210 and HI2211 are microprocessor based
pH and temperature bench meters.
HI2211 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 HI7662 temperature 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, please contact your local
Hanna Instruments Office. Each instrument is supplied with:
• HI1131B Glass-body Combination pH Electrode
• HI7662 Temperature Probe
• HI76404N Electrode Holder
• pH4.01 & 7.01 Buffer Solutions, 20 mL each
• HI7082 Electrolyte Solution
• HI700661 Cleaning Solution
• 12 VDC Power Adapter
• Instruction Manual
• Quality Certificate
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.
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION

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Power
12Vdc
On
Off
pH/ORP Ref.
TEMP
11
10
14
13
12
Ref.
TEMP
pH/ORP
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 tempera-
ture or select pH buffer.
5) RANGE key, to select measurement range (HI2211 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
Range
–2.00 to 16.00 pH
±399.9 mV (HI2211 only)
±2000 mV (HI2211 only)
–20.0 to 120.0 °C
Resolution
0.01 pH
0.1 mV (HI2211 only)
1 mV (HI2211 only)
0.1 °C
Accuracy
@20 °C / 68 °F
±0.01 pH
±0.2 mV (HI2211 only)
±1 mV (HI2211 only)
±0.4 °C (excluding probe error)
pH Calibration
Automatic, 1 or 2 point with 5 memorized
buffer values
(pH4.01, 6.86, 7.01, 9.18, 10.01)
Temperature
compensation
Automatic (with HI7662 probe) or
Manual from: –20.0 to 120.0 °C
pH Electrode HI1131B (included)
Temperature probe HI7662 (included)
Input impedance 1012 Ohms
Power supply 12 VDC adapter (included)
Environment 0 to 50 °C (32 to 122 °F)
max. 95% RH non-condensing
Dimensions 235 x 222 x 109 mm (9.2 x 8.7 x 4.3”)
Weight 1.3 Kg (2.9 lbs)
Warranty 2 years

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OPERATIONAL GUIDE
POWER CONNECTION
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.
ELECTRODE AND PROBE CONNECTIONS
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 compensa-
tion 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 3 cm (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.

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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, the temperature effect must be compensated for. To use
the Automatic Temperature Compensation feature, connect and
submerse the HI7662 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).
ORP MEASUREMENTS (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.

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MR
MEM
TEMPERATURE MEASUREMENTS
Connect the HI7662 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.
MEMORY FUNCTION
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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pH CALIBRATION
CAL
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 pH7.01 or pH6.86 as
first buffer and pH4.01 as second buffer. If you are measuring in the
alkaline range, use pH7.01 or pH6.86 as first buffer and pH10.01 or
pH9.18 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:
• pH4.01, 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.