1
pH/mV/°C
Bench Meters
with Custom Buffers
HI 110 HI 111
HI 112 HI 113
Instruction Manual
pH
MR
MEM
SET
C
C
RANGE
GLP
CFM
CAL
pH / ORP Meter
HI 113
Select Setup Item
Select pH/ORP
RANGE
SET
Set Parameters
GLP
Show GLPData
MEM
Store Reading
MR
MemoryRecall
Functions
Confirm Calibration Point
CFM
Select pH Buffer
/
Enter/Exit Calibration
CAL
pH Calibration
www.hannainst.com
2
WARRANTY
HI 110, HI 111, HI 112 and HI 113 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.
Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using the instruments.
This manual will provide you with the necessary information for correct use of
the instruments, as well as a precise idea of their versatility.
If you need additional technical information, do not hesitate to e-mail us at
tech@hannainst.com or turn to the back cover for our worldwide contact list.
These instruments are in compliance with directives.
TABLE OF CONTENTS
WARRANTY ......................................................................................................................... 2
PRELIMINARY EXAMINATION .............................................................................................. 3
GENERAL DESCRIPTION ..................................................................................................... 3
FUNCTIONAL DESCRIPTION HI 110 AND HI 111 ............................................................. 4
HI 110 AND HI 111 SPECIFICATIONS .............................................................................. 5
FUNCTIONAL DESCRIPTION HI 112 AND HI 113 ............................................................. 6
HI 112 AND HI 113 SPECIFICATIONS .............................................................................. 7
OPERATIONAL GUIDE ......................................................................................................... 8
pH CALIBRATION ................................................................................................................ 10
GOOD LABORATORY PRACTICE (GLP) ...................................................................................15
SETUP .....................................................................................................................................17
TEMPERATURE CALIBRATION (for technical personnel only) ........................................... 21
mV CALIBRATION (for technical personnel only, HI 111 AND HI 113) ........................... 23
RELATIVE mV CALIBRATION (HI 111 AND HI 113) ....................................................... 24
PC INTERFACE (HI 112 AND HI 113) ............................................................................ 25
pH BUFFER TEMPERATURE DEPENDENCE ..................................................................... 27
ELECTRODE CONDITIONING & MAINTENANCE .................................................................. 28
TROUBLESHOOTING GUIDE ............................................................................................... 31
TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS ............................................... 32
ACCESSORIES ...................................................................................................................... 33
3
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 or the nearest Hanna Customer Service Center.
Each instrument is supplied with:
HI 1131B Glass-body Combination pH Electrode with 1 m (3.3') Cable
HI 7669/2W Temperature Probe
HI 76404 Electrode Holder
pH 4.01 & 7.01 Buffer Solutions (20 mL each)
HI 7071S Electrolyte Solution
12VDC Power 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.
The HANNA HI 110, HI 111, HI 112 and HI 113 are microprocessor-based pH
and Temperature bench meters.
HI 111 and HI 113 can also measure Oxidation Reduction Potential (ORP) in
mV range. Relative mV feature is also provided.
pH measurements are compensated for temperature effect manually or
automatically with the HI 7669/2W temperature probe.
Up to three-point (HI 110, HI 111) or up to five-point (HI 112, HI 113)
calibration is possible. In addition, two custom buffers can be set and used
during calibration.
The GLP feature provides a guarantee of data consistency.
An alarm time-out is available to alert the user that too much time elapsed
since the last pH calibration.
Through the RS232 serial port data can be transferred to a PC (HI 112, HI 113).
Hanna Instruments reserves the right to modify the design,
construction and appearance of its products without advance notice.
GENERAL DESCRIPTION
4
1) Liquid Crystal Display (LCD).
2) CFM/GLP key, to confirm different values or to display Good Laboratory
Practice information.
3) CAL key, to enter and exit/escape calibration mode.
4) /ºC key, to manually decrease temperature value or other parameters.
5) /ºC key, to manually increase temperature value or other parameters.
6) MR key, to recall the stored value.
7) MEM key, to store a value into memory.
8) SET key, to enter/exit SETUP mode.
9) RANGE key, to select measurement range or switch to focused data in
SETUP (HI 111 only).
SEL key, to switch to focused data in SETUP menu (HI 110 only).
10) ON/OFF switch.
11) Power supply socket.
12) BNC electrode connector.
13) Electrode reference socket.
14) Temperature probe socket.
FUNCTIONAL DESCRIPTION
HI 110 AND HI 111
1
3
2
7
4
6
5
Front Panel
Primary LCD
Secondary LCD
POWER
12VDC
INPUT
REF
TEMP
11
12 13 14
Rear Panel
9
10
8
pH
MR
MEM
SET
C
C
RANGE
GLP
CFM
CAL
pH / ORP Meter
HI 111
Select Setup Item
Select pH/ORP
RANGE
SET
Set Parameters
GLP
Show GLPData
MEM
Store Reading
MR
MemoryRecall
Functions
Confirm Calibration Point
CFM
Select pH Buffer
/
Enter/Exit Calibration
CAL
pH Calibration
5
HI 110 AND HI 111
SPECIFICATIONS
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1) Liquid Crystal Display (LCD).
2) CFM/GLP key, to confirm different values or to display Good Laboratory
Practice information.
3) CAL key, to enter and exit/escape calibration mode.
4) /ºC key, to manually decrease temperature value or other parameters.
5) /ºC key, to manually increase temperature value or other parameters.
6) MR key, to recall the stored value.
7) MEM key, to store a value into memory.
8) SET key, to enter/exit SETUP mode.
9) RANGE key, to select measurement range or switch to focused data in SETUP.
10) ON/OFF switch.
11) Power supply socket.
12) BNC electrode connector.
13) Electrode reference socket.
14) Temperature probe socket.
15) RS232 serial communication connector.
FUNCTIONAL DESCRIPTION
HI 112 AND HI 113
1
9
3
2
7
4
6
5
10
Front Panel
Primary LCD
Secondary LCD
RS232
15
POWER
12VDC
INPUT
REF
TEMP
11
12 13 14
Rear Panel
8
pH
MR
MEM
SET
C
C
RANGE
GLP
CFM
CAL
pH / ORP Meter
HI 113
Select Setup Item
Select pH/ORP
RANGE
SET
Set Parameters
GLP
Show GLPData
MEM
Store Reading
MR
MemoryRecall
Functions
Confirm Calibration Point
CFM
Select pH Buffer
/
Enter/Exit Calibration
CAL
pH Calibration
7
HI 112 AND HI 113
SPECIFICATIONS
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8
OPERATIONAL GUIDE
POWER CONNECTION
Plug the 12 VDC adapter into the power supply socket.
Note: These instruments use non volatile memory to retain the pH, mV,
temperature calibrations and all other settings, even when unplugged.
Note: Make sure a fuse protects the main line.
ELECTRODE AND PROBE CONNECTIONS
For pH or ORP measurements connect an electrode with internal reference to
the BNC connector on the back of the instrument.
For electrodes with a separate reference connect the electrodes 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.
All LCD tags are displayed and a beep is sounded while
the instruments perform a self test.
HI 110 and HI 111
HI 112 and HI 113
pH MEASUREMENTS
Make sure the instrument has been calibrated before
taking pH measurements.
Submerge the electrode tip and the temperature probe
approximately 4 cm (1½) 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 reading is out of range, the closest full-scale value will be displayed
blinking on the primary LCD.
pH
BUFFER pH
INTVDATETIME%
3
2
1
BUF
WRONG
READY
CFM
MEM
pHmVCAL
BUFFER pH
INTVDATETIME%
BUF
WRONG
READY
CFM
MEM
pHmVCAL
9
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 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 submerge the
HI 7669/2W 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, simple manual compensation can
be performed by disconnecting the temperature probe.
The display will then show the default temperature of 25 ºC or
the last temperature reading with the ºC tag blinking.
The temperature can now be adjusted with the ARROW keys
(from 9.9 ºC to 120.0 ºC).
mV/ORP MEASUREMENTS (HI 111 and HI 113)
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.
To correctly perform a REDOX measurement, the surface of
the ORP electrode must be clean and smooth.
Press RANGE to enter mV range.
Submerge the tip of the ORP electrode 4 cm (1½) 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 primary LCD.
C C
mV
mV
10
RELATIVE mV MEASUREMENTS (HI 111 and HI 113)
Press RANGE until rEL message will be displayed on the secondary LCD line
for about one second and mV tag will blink. After one second the
temperature will be displayed on the secondary LCD.
The reading displayed by the instrument is equal to the difference between
the current mV input value and relative mV offset established in the relative
mV calibration.
TEMPERATURE MEASUREMENTS
Connect the HI 7669/2W temperature probe to the appropriate
socket and turn the instrument on.
Immerse the temperature probe into the sample and allow
the reading on the secondary LCD to stabilize.
MEMORY FUNCTION
Press and hold down MEM. The last reading will appear
on the LCD along with MEM tag until MEM is released.
Press MR and the previously memorized reading will be
displayed on the LCD with MEM tag.
pH CALIBRATION
Calibrate the instrument frequently, 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.
If CAL INTV tags are blinking during measurement.
Every time you calibrate the instrument use fresh buffers and perform an
electrode Cleaning Procedure (see page 30).
MR
mV
MEM
pH
MEM
11
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 6.86 as first buffer and
pH 4.01 or 1.68 (HI 112, HI 113) as second buffer. If you are measuring in the
alkaline range, use pH 7.01 or 6.86 as first buffer and pH 10.01, 9.18 or 12.45
(HI 112, HI 113) as second buffer.
PROCEDURE
Calibration can be performed in three (HI 110, HI 111) or five (HI 112, HI 113 )
calibration points.
For accurate measurements, it is recommended to perform a three (HI 110, HI
111) or five-point calibration (HI 112, HI 113). However, at least a two-point
calibration is suggested.
The calibration buffer can be selected from the calibration buffer list that
includes the defined custom buffers in SETUP menu and the memorized
standard buffers:
pH 4.01, 6.86, 7.01, 9.18, 10.01 (HI 110, HI 111)
pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45 (HI 112, HI 113)
The custom buffers are a special option that allows the user to calibrate in a
buffer solution different from a standard one. Up to two custom buffers can be
set in SETUP menu (see page 17). Each custom buffer value can be changed
in a ±1.0 pH window around the set value, during calibration, when it is
selected; the BUFFER pH tag will blink.
The instruments will automatically skip the buffer used during calibration and
the buffers which are in a ±0.2 pH window, around one of the calibrated
buffers.
All new calibrations will override existing stored calibration data in a ±0.2
pH window. The slopes adjacent to the new points will be reevaluated.
If the new calibration point has no correspondence in the existing stored
calibration data, it is added to it if this is not full (3 or 5 points), or the
instrument will ask which buffer will be replaced by the current buffer.
If at least a two-point calibration has been performed and an offset correction of
the electrode is wanted, keeping unchanged the existing slopes, perform a onepoint calibration with OFFS option selected in SETUP menu. If Pnt option is
selected, the slopes adjacent to the calibration points will be reevaluated.
12
THREE- (HI 110, HI 111) / FIVE-POINT (HI 112,
HI 113) CALIBRATION
Immerse the pH electrode and the temperature probe
approximately 4 cm (1½) into a buffer solution and
stir gently. The temperature probe should be close to
the pH electrode.
Press CAL. The CAL and
BUF
tags will appear
and the 7.01 buffer will be displayed on the
secondary LCD.
If necessary, press the ARROW keys to select a different buffer value.
The tag will blink on the LCD until the reading is
stable.
When the reading is stable and close to the selected buffer, the
READY tag will be displayed and the CFM tag will blink.
Press CFM to confirm calibration.
The calibrated value will be displayed on the primary LCD
and the second expected buffer value on the secondary
LCD.
After the first calibration point is confirmed, immerse the pH electrode and the
temperature probe approximately 4 cm (1½) into the second buffer solution
and stir gently. The temperature probe should be close to the pH electrode.
If necessary, press the ARROW keys to select a different buffer value.
The tag will blink on the LCD until the reading is
stable.
When the reading is stable and close to the selected buffer, the
READY tag will be displayed and the CFM tag will blink.
Press CFM to confirm calibration.
The calibrated value is then displayed on the primary
LCD and and the third expected buffer value on the
secondary LCD.
After the second calibration point is confirmed, immerse the pH electrode
and the temperature probe approximately 4 cm (1½) into the next
buffer solution and stir gently. The temperature probe should be close to
the pH electrode.
BUFFER pH
2
BUF
pHCAL
BUFFER pH
1
BUF
pHCAL
13
If necessary, press the ARROW keys to select a different buffer value.
The tag will blink on the LCD until the reading is
stable.
When the reading is stable and close to the selected buffer, the
READY tag will be displayed and the CFM tag will blink.
Press CFM to confirm calibration.
If the fifth calibration point is reached, the instrument stores
the calibration value and returns to normal measurement
mode, or else it goes to the next calibration point.
TWO-POINT CALIBRATION
Proceed as described in THREE-/FIVE-POINT CALIBRATION section.
Press CAL after the second calibration point was confirmed. The instruments
will memorize the two-point calibration data and will return to measurement
mode.
ONE-POINT CALIBRATION
Two SETUP selectable options are available: Pnt and OFFS.
If the Pnt option is selected, the new calibration point overrides an existing
one. The adjacent slopes will be reevaluated.
If the OFFS option is selected, an electrode offset correction is performed
keeping unchanged the existing slopes.
Proceed as described in THREE-/FIVE-POINT CALIBRATION section.
Press CAL after the first calibration point was confirmed. The instruments will
memorize the one-point calibration data and will return to measurement
mode.
Note: If the value measured by the instrument is not close to the
selected buffer, WRONG and WRONG tags will blink
alternately. In this case check if the correct buffer has been used,
or regenerate the electrode by following the Cleaning Procedure
(see page 30). If necessary, change the buffer or the electrode.
When a custom buffer is displayed, the BUFFER pH tag blinks.
To change the custom buffer value in according with the buffer
temperature proceed as described in WORKING WITH CUSTOM
BUFFERS paragraph (see page 14).
If the buffer temperature or the manual temperature exceeds the
temperature limits of the buffer, WRONG tag and temperature
reading will blink.
If WRONG, BUFFER pH tags and OLD message are displayed
blinking on the secondary LCD line, an inconsistency between new and
previous (old) calibration is detected. Clear calibration parameters
and proceed with calibration from the current calibration point. The
instrument will keep all confirmed values during current calibration.
14
To clear calibration parameters for all uncalibrated buffers starting
with current buffer, press and hold down CFM, then press CAL. If
this procedure is performed while calibrating in the first calibration
point, the instrument returns to measurement mode, else calibration
can be continued from the current point.
Press RANGE (SEL for HI 110) to toggle
between pH buffer and temperature reading
(HI 110, HI 111).
Press RANGE to toggle between pH buffer,
buffer number and temperature reading
during calibration (HI 112, HI 113 only).
Each time a buffer is confirmed, the new calibration parameters
replace the old calibration parameters of the coresponding buffer. If
current confirmed buffer has no correspondence in the existing stored
calibration and this is not full, (three buffers for HI 110, HI 111; five
buffers for HI 112, HI 113), the current buffer is added to the
existing stored calibration. If the existing stored calibration is full, the
instrument asks which buffer will be replaced by current buffer.
Press the ARROW keys to select another buffer to be replaced.
Press CFM to confirm the buffer that will be replaced.
Press CAL to leave calibration without replacing.
Note: If the replaced buffer is outside the ±0.2 pH window, around each of
the calibrated buffers, it is possible to select this buffer for next calibration during current calibration.
WORKING WITH CUSTOM BUFFERS
If at least one custom buffer was set in SETUP menu, it can be selected for
calibration by pressing the ARROW keys. The BUFFER pH tag will blink.
Press SET if you want to adjust the buffer value. The buffer value will start
blinking.
Use the ARROW keys to change the buffer value.
After about 5 seconds since you performed the last change, the buffer value is
updated. Press SET if you want to change it again.
Note: Custom buffer value can be adjusted in a ±1.00 pH window, around
the set value.
CFM
CAL
BUFFER pH
pH
BUF
CAL
BUFFER pH
pH
15
GOOD LABORATORY PRACTICE (GLP)
GLP is a set of functions that allows storage and retrieval of data regarding the
maintenance and status of the electrode.
All data regarding the last calibration (one, two, three, four or five-point) is
stored for the user to review when necessary. This data includes the following:
calibration time stamp, offset (mV), average of slope (%), calibration buffers
and the time until a new calibration is required.
CALIBRATION ALARM TIME-OUT
These instruments allow the user to set the number of days before the next
required calibration. This value can be set from 1 to 7 days. The default
setting is OFF (disabled).
The instruments check if the time-out time has expired. If the time elapsed, the
CAL INTV tags will blink as a reminder.
Note: If the instruments were not calibrated, the CAL INTV tags will be
displayed even if the feature is disabled in SETUP menu.
LAST CALIBRATION DATA
Last calibration data are stored automatically after a successful calibration.
To view the pH calibration data, press GLP while in measurement mode.
The instruments will display the time (hh:mm) of the last calibration.
Press the ARROW keys to view the next logged calibration parameter
(pressing the ºC key):
The date (yyyy.mm.dd).
The pH calibration offset.
The pH calibration slope (the GLP slope is the average of the calibration
slopes; the percentage is referred to the ideal value of 59.16 mV/pH).
DATE
CAL
mVCAL
%
CAL
16
The pH calibration buffers in calibrating order.
The first pH calibration buffer:
The second pH calibration buffer:
The third pH calibration buffer:
Note: For HI 112 and HI 113, the fourth and the fifth calibration
buffers are also displayed in GLP.
The OLd message displayed beside the pH value means that
this buffer was not used during last calibration. Press and hold
down SET if you want to see calibration date (or time, if old
calibration was made in the same day with current calibration).
For each custom buffer used in calibration, the BUFFER pH tag
will blink.
If no bUF message appears on the LCD, the instrument informs
you that calibration was performed in less than three (HI 110, HI
111) or five points (HI 112, HI 113).
pH resolution during calibration.
Calibration Alarm Time-Out status:
if disabled.
BUF
CAL
BUFFER pH
BUF
pHCAL
BUFFER pH
BUF
pHCAL
BUF
pHCAL
BUFFER pH
CAL
17
Setup mode allows viewing and modifying the following parameters:
Calibration Alarm Time-Out
Custom buffer 1
Custom buffer 2
One-point calibration behaviour
Instrument ID (HI 112 & HI 113)
Current Time
Current Date
Beep Status
Baud Rate (serial communication, HI 112 & HI 113)
Command prefix (serial communication, HI 112 & HI 113)
To enter SETUP mode press SET while the instrument is in measurement mode.
Select a parameter with the ARROW keys.
Press CAL if you want to change a parameter value. The selected parameter
will start blinking.
Press RANGE (SEL for HI 110) to toggle between displayed parameters.
Press the ARROW keys to increase or decrease the displayed value.
Press CFM to save the modified value or CAL to escape.
Press the ARROW keys to select the next/previous parameter.
INTV
CAL
CAL
or the number of days until the calibration alarm will be displayed.
or if expired (7 days ago).
The instrument ID.
Note: Press GLP at any moment and the instruments will return to
measurement mode.
If calibration has not been performed, the instruments display
no CAL message blinking.
SETUP
18
CALIBRATION ALARM TIME-OUT SET
Press CAL when the calibration time-out is displayed. Calibration time-out
(OFF or 1 to 7 days) will start blinking.
Press the ARROW keys to change the calibration time-out value.
Press CFM to save the modified calibration time-out value.
Press CAL to escape without saving.
FIRST CUSTOM BUFFER SET
Press CAL when custom buffer 1 is displayed. The custom buffer (disabled no
cb1 or 0 to 16 pH) will start blinking.
Press the ARROW keys to change the custom buffer value.
Press CFM to save the modified custom buffer value.
Press CAL to escape without saving.
SECOND CUSTOM BUFFER SET
Press CAL when custom buffer 2 is displayed. The custom buffer (disabled no
cb2 or 0 to 16 pH) will start blinking.
Press the ARROW keys to change the custom buffer value.
Press CFM to save the modified custom buffer value.
Press CAL to escape without saving.
ONE-POINT CALIBRATION BEHAVIOUR
Press CAL when 1 Pnt message is displayed on the secondary LCD. One of
the two options (Pnt or OFFS) will start blinking (see pH CALIBRATION
PROCEDURE for details, page 11).
Press the ARROW keys to toggle between Pnt and OFFS options.
Press CFM to save the behaviour for one-point calibration.
Press CAL to escape without saving.
CAL
BUFFER pH
CAL
BUFFER pH
INTV
CAL
CAL
19
INSTRUMENT ID PARAMETER SET
(HI 112, HI 113 only)
Press CAL when the instrument ID is displayed. The instrument ID (0000 to
9999) will start blinking.
Press the ARROW keys to change the instrument ID value.
Press CFM to save the modified instrument ID value.
Press CAL to escape without saving.
CURRENT TIME SET
Press CAL when the current time is displayed. The hour will start blinking.
Press the ARROW keys to change the hour.
Press RANGE (SEL for HI 110). The minutes will start blinking.
Press the ARROW keys to change the minutes.
Press CFM to save the modified value.
Press CAL to escape without saving.
CURRENT DATE SET
Press CAL when the current date is displayed. The year will start blinking.
Press the ARROW keys to change the year.
Press RANGE. The month will start blinking.
Press the ARROW keys to change the month.
TIME
TIME
DATE
DATE
20
Press RANGE. The day will start blinking.
Press the ARROW keys to change the day.
Press CFM to save the modified value.
Press CAL to escape without saving.
BEEP STATUS SET
Press CAL when the beep status is displayed. Beep status (On or OFF) will
start blinking.
Press the ARROW keys to change the beep status (On or OFF).
Press CFM to save the modified beep status.
Press CAL to escape without saving.
BAUD RATE SET (HI 112, HI 113 only)
Press CAL when the baud rate is displayed. The baud rate (600, 1200, 2400,
4800 or 9600) will start blinking.
Press the ARROW keys to change the baud rate value.
Press CFM to save the modified baud rate value.
Press CAL to escape without saving.
SERIAL COMMUNICATION COMMAND PREFIX SET
(HI 112, HI 113 only)
Press CAL when the command prefix is displayed. The command prefix (0 to
47) will start blinking.
Press the ARROW keys to change the command prefix.
Press CFM to save the modified command prefix value.
Press CAL to escape without saving.
Note: See the PC interface section on page 25 for a complete explanation.
The command prefix must be 16 if HI 92000 PC software is used.
DATE
21
All the instruments are factory calibrated for temperature.
Hannas temperature probes are interchangeable and no temperature
calibration is needed when they are replaced.
If the temperature measurements are inaccurate, temperature recalibration
should be performed.
For an accurate recalibration, contact your dealer or the nearest Hanna
Customer Service Center, or follow the instructions bellow.
Prepare a vessel containing ice and water and another one containing hot
water (at a temperature of around 50 ºC). Place insulation material
around the vessels to minimize temperature changes.
Use a calibrated thermometer with a resolution of 0.1 ºC as a reference
thermometer.
With the instrument off, press and hold down the CAL&MEM keys, then
power on the instrument. The CAL tag will appear and the secondary
LCD will show 0.0 ºC.
Immerse the temperature probe in the vessel with ice and water as near
as possible to the reference thermometer. Allow a few seconds for the probe
to stabilize.
Use the ARROW keys to set the reading on the secondary LCD to that of ice
and water, measured by the reference thermometer. When the reading is
stable and close to the selected calibration point, READY tag will appear
and CFM tag will blink.
Press CFM to confirm. The secondary LCD will show 50.0 ºC.
Immerse the temperature probe in the second vessel as near as possible to
the reference thermometer. Allow a few seconds for the probe to stabilize.
TEMPERATURE CALIBRATION
(for technical personnel only)
CAL
GLP
CFM
CAL
22
Use the ARROW keys to set the reading on the secondary LCD to that of
the hot water.
When the reading is stable and close to the selected
calibration point, READY tag will appear and CFM
tag will blink.
Press CFM to confirm. The instrument returns to
measurement mode.
Note: If the reading is not close to the selected calibration point, WRONG
tag will blink. Change the temperature probe and restart calibration.
C C
23
mV CALIBRATION
(for technical personnel only)
All the instruments are factory calibrated for mV.
Hannas ORP electrodes are interchangeable and no mV calibration is
needed when they are replaced.
If the mV measurements are inaccurate, mV recalibration should be performed.
For an accurate recalibration, contact your dealer or the nearest Hanna
Customer Service Center, or follow the instructions below.
A two or three-point calibration can be performed at 0.0 mV, 600.0 mV and
1800.0 mV.
Attach to the BNC connector a mV simulator with an accuracy of ±0.1 mV.
With the instrument off, press and hold down the MR&CFM keys, then
power on the instrument. The CAL tag will appear and the secondary
LCD will show 0.0 mV.
Set 0.0 mV on the simulator.
When the reading is stable and close to the selected calibration point,
READY tag will appear and CFM tag will blink.
Press CFM to confirm. The secondary LCD will display 600 mV.
Set 600.0 mV on the simulator.
When the reading is stable and close to the selected calibration point,
READY tag will appear and CFM tag will blink.
Press CFM to confirm. The secondary LCD will display 1800 mV.
Set 1800.0 mV on the simulator.
When the reading is stable and close to the selected calibration point,
READY tag will appear and CFM tag will blink.
Press CFM to confirm. The instrument returns to measurement mode.
Note: If the reading is not close to the selected calibration point,
WRONG tag will blink. Verify calibration condition or contact
your vendor if you can not calibrate.
Press CAL in any moment of the calibration process. The instrument
will return to measurement mode. If calibration process is stopped
after 600 mV is confirmed, the 600 mV range is calibrated and
calibration parameters are memorized.
24
RELATIVE mV CALIBRATION (HI 111
AND HI 113)
Press CAL when the instrument is in RELATIVE mV measurement mode.
The mV and tags will blink. Absolute mV is displayed on the
primary LCD and AbS message is displayed on the secondary LCD.
When the absolute reading is stable and in measurement range, the
instrument asks for confirmation.
If the reading is out of range, WRONG tag will be displayed.
Press CFM to confirm the absolute value. The instrument will display 0.0
mV on the primary LCD and rEL message on the secondary LCD. In this
moment the relative mV offset is equal to absolute mV reading.
Use the ARROW keys if you want to change the displayed relative mV value.
Press CFM to confirm the relative mV value. The relative mV offset is
displayed on the primary LCD and OFF message on the secondary LCD for
a few seconds. The instrument returns to measurement mode.
Note: The relative mV value can be changed only inside the relative mV offset
window (± 2000 mV).
25
Data transmission from the instrument to the PC can be done with the HI
92000 Windows® compatible software (optional). HI 92000 also offers
graphing and on-line help feature.
Data can be exported to the most popular spreadsheet programs for further
analysis.
To connect your instrument to a PC, use the optional Hanna HI 920010 cable
connector. Make sure that your instrument is switched off and plug one
connector to the instrument RS232C socket and the other into the serial port
of your PC.
Note: Other cables than HI 920010 may use a different configuration.
In this case communication between instrument and PC may not
be possible.
If you are not using Hanna Instruments HI 92000 software,
please see the following instructions.
SENDING COMMANDS FROM PC
It is also possible to remotely control the instrument with any terminal
program. Use HI 920010 cable to connect the instrument to a PC, start the
terminal program and set the communication options as follows: 8, N, 1, no
flow control.
COMMAND TYPES
To send a command to the instrument the scheme is:
<command prefix> <command> <CR>
where: <command prefix> is a selectable ASCII character
between 0 and 47.
<command> is the command code (3 characters).
Note: Either small or capital letters can be used.
SIMPLE COMMANDS
PHR Sets the range to pH 0.001 resolution
MVR Sets the range to mV (HI 113 only)
MRS Sets the range to relative mV (HI 113 only)
RNG Is equivalent to pressing RANGE
CAL Is equivalent to pressing CAL
CFM Is equivalent to pressing CFM/GLP
UPC Is equivalent to pressing the UP arrow key
DWC Is equivalent to pressing the DOWN arrow key
MEM Is equivalent to pressing MEM
MRR Is equivalent to pressing MR
SET Is equivalent to pressing SET
PC INTERFACE (HI 112 AND HI 113)
26
CHR n Change the instrument range according with the parameter
value (n):
n=0 pH range/0.001 resolution
n=1 pH range/0.01 resolution
n=3 mV range
n=4 Relative mV range
COMMANDS REQUIRING AN ANSWER
pH? Causes the instrument to send the pH reading. If the range is set
to mV, Err6 is received.
MV? Causes the instrument to send the mV reading. If the range is set
to pH, Err6 is received.
MR? Causes the instrument to send the relative mV reading. If the
range is set to pH or mV, Err6 is received.
TM? Causes the instrument to send the temperature reading.
RAS Causes the instrument to send a complete set of readings in
according with the current range:
pH, mV and temperature reading on pH range.
mV and temperature reading on mV range.
Rel mV, absolute mV and temperature reading on Rel
mV range.
MDR Requests the instrument model name and firmware code.
PAR Requests the setup parameters setting (instrument ID, calibra-
tion alarm time-out, pH range, beep status).
GLP Requests the calibration data record.
Note: Err8 is sent if instrument is not in measurement mode.
Err7 is sent if mV are asked during pH calibration mode.
NAK (21) character is sent when the instrument receives an
unknown or a corrupted command.
Note: Invalid commands will be ignored.
27
The temperature has an effect on pH. The calibration buffer solutions are
affected by temperature changes to a lesser degree than normal solutions.
During calibration the instrument will automatically calibrate to the pH value
corresponding to the measured or set temperature.
During calibration the instrument will display the pH buffer value at 25 ºC.
pH BUFFER TEMPERATURE
DEPENDENCE
PMET SREFFUBHp
Cº Fº 86.1 10.4 68.6 10.7 81.9 10.01 54.21
0 23 76.1 10.4 89.6 31.7 64.9 23.01 24.31
5 14 76.1 00.4 59.6 01.7 93.9 42.01 02.31
01 05 76.1 00.4 29.6 70.7 33.9 81.01 00.31
51 95 76.1 00.4 09.6 40.7 72.9 21.01 18.21
02 86 86.1 00.4 88.6 30.7 22.9 60.01 36.21
52 77 86.1 10.4 68.6 10.7 81.9 10.01 54.21
03 68 86.1 20.4 58.6 00.7 41.9 69.9 92.21
53 59 96.1 30.4 48.6 99.6 01.9 29.9 31.21
04 401 96.1 40.4 48.6 89.6 70.9 88.9 40.21
54 311 07.1 50.4 38.6 89.6 40.9 58.9 48.11
05 221 17.1 60.4 38.6 89.6 10.9 28.9 07.11
55 131 27.1 70.4 48.6 89.6 99.8 97.9 75.11
06 041 27.1 90.4 48.6 89.6 79.8 77.9 44.11
56 941 37.1 11.4 58.6 99.6 59.8 67.9 -
07 851 47.1 21.4 58.6 99.6 39.8 57.9 -
57 761 67.1 41.4 68.6 00.7 19.8 47.9 -
08 671 77.1 61.4 68.6 10.7 98.8 37.9 -
58 581 87.1 71.4 78.6 20.7 78.8 47.9 -
09 491 97.1 91.4 88.6 30.7 58.8 57.9 -
59 302 18.1 02.4 98.6 40.7 38.8 67.9 -
28
PREPARATION PROCEDURE
Remove the protective cap of the pH electrode.
DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal with
electrodes. They will disappear when rinsed with water.
During transport, tiny bubbles of air may form inside the glass bulb affecting
proper functioning of the electrode. These bubbles can be removed by
shaking down the electrode as you would do with a glass thermometer.
If the bulb and/or junction is dry, soak the electrode in HI 70300 or HI 80300
Storage Solution for at least one hour.
ELECTRODE CONDITIONING
& MAINTENANCE
29
For refillable electrodes:
If the filling solution (electrolyte) is more than 2½ cm (1) below the fill hole,
add HI 7082 or HI 8082 3.5M KCl Electrolyte Solution for double junction or
HI 7071 or HI 8071 3.5M KCl+AgCl Electrolyte Solution for single junction
electrodes.
For faster response, unscrew the fill hole screw during measurements.
For AMPHEL® electrodes:
If the electrode does not respond to pH changes, the battery is run down and
the electrode should be replaced.
MEASUREMENT
Rinse the electrode tip with distilled water. Immerse the tip (bottom 4 cm /1½)
in the sample and stir gently for a few seconds.
For a faster response and to avoid cross-contamination of the samples, rinse
the electrode tip with a few drops of the solution to be tested, before taking
measurements.
STORAGE PROCEDURE
To minimize clogging and assure a quick response time, the glass bulb and
the junction should be kept moist and not allowed to dry out.
Replace the solution in the protective cap with a few drops of HI 70300 or
HI 80300 Storage Solution or, in its absence, Filling Solution (HI 7071 or
HI 8071 for single junction and HI 7082 or HI 8082 for double junction
electrodes). Follow the Preparation Procedure on page 28 before taking
measurements.
Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER.
PERIODIC MAINTENANCE
Inspect the electrode and the cable. The cable used for connection to the
instrument must be intact and there must be no points of broken insulation on
the cable or cracks on the electrode stem or bulb. Connectors must be perfectly
clean and dry. If any scratches or cracks are present, replace the electrode.
Rinse off any salt deposits with water.
For refillable electrodes:
Refill the reference chamber with fresh electrolyte (HI 7071 or HI 8071 for
single junction and HI 7082 or HI 8082 for double junction electrodes). Allow
the electrode to stand upright for 1 hour.
Follow the Storage Procedure above.
30
CLEANING PROCEDURE
General Soak in Hanna HI 7061 or HI 8061 General
Cleaning Solution for approximately ½ hour.
Protein Soak in Hanna HI 7073 or HI 8073 Protein
Cleaning Solution for 15 minutes.
Inorganic Soak in Hanna HI 7074 Inorganic Cleaning
Solution for 15 minutes.
Oil/grease Rinse with Hanna HI 7077 or HI 8077 Oil and Fat
Cleaning Solution.
IMPORTANT: After performing any of the cleaning procedures, rinse the
electrode thoroughly with distilled water, refill the reference chamber with
fresh electrolyte (not necessary for gel-filled electrodes) and soak the electrode
in HI 70300 or HI 80300 Storage Solution for at least 1 hour before taking
measurements.
31
TROUBLESHOOTING GUIDE
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32
Typical Electrode Life
Ambient Temperature 1 3 years
90 ºC Less than 4 months
120 ºC Less than 1 month
Alkaline Error
High concentrations of sodium ions interfere with readings in alkaline
solutions. The pH at which the interference starts to be significant depends
upon the composition of the glass. This interference is called alkaline error and
causes the pH to be underestimated. Hannas glass formulations have the
indicated characteristics.
The resistance of glass electrodes partially depends on the temperature. The
lower the temperature, the higher the resistance. It takes more time for the
reading to stabilize if the resistance is higher. In addition, the response time
will suffer to a greater degree at temperatures below 25 ºC.
Since the resistance of the pH electrode is in the range of 50 200 Mohm, the
current across the membrane is in the pico Ampere range. Large currents can
disturb the calibration of the electrode for many hours.
For these reasons high humidity environments, short circuits and static
discharges are detrimental to a stable pH reading.
The pH electrodes life also depends on the temperature. If constantly used at
high temperatures, the electrode life is drastically reduced.
TEMPERATURE CORRELATION
FOR pH SENSITIVE GLASS
1.0 Mol L-1 Na
+
0.1 Mol L-1 Na
+
Sodium Ion Correction for the Glass at 20-25 ºC
Concentration pH Error
13.00
13.50
14.00
12.50
13.00
13.50
14.00
0.10
0.14
0.20
0.10
0.18
0.29
0.40
33
pH BUFFER SOLUTIONS
HI70004P pH 4.01 Buffer Sachets, 20 mL, 25 pcs
HI70007P pH 7.01 Buffer Sachets, 20 mL, 25 pcs
HI70010P pH 10.01 Buffer Sachets, 20 mL, 25 pcs
HI7001L pH 1.68 Buffer Solution, 500 mL
HI7004L pH 4.01 Buffer Solution, 500 mL
HI7006L pH 6.86 Buffer Solution, 500 mL
HI7007L pH 7.01 Buffer Solution, 500 mL
HI7009L pH 9.18 Buffer Solution, 500 mL
HI7010L pH 10.01 Buffer Solution, 500 mL
HI7001L pH 1.68 Buffer Solution in FDA approved bottle, 500 mL
HI8004L pH 4.01 Buffer Solution in FDA approved bottle, 500 mL
HI8006L pH 6.86 Buffer Solution in FDA approved bottle, 500 mL
HI8007L pH 7.01 Buffer Solution in FDA approved bottle, 500 mL
HI8009L pH 9.18 Buffer Solution in FDA approved bottle, 500 mL
HI8010L pH 10.01 Buffer Solution in FDA approved bottle, 500 mL
ELECTRODE STORAGE SOLUTIONS
HI70300L Storage Solution, 460 mL
HI80300L Storage Solution in FDA approved bottle, 460 mL
ELECTRODE CLEANING SOLUTIONS
HI70000P Electrode Rinse Sachets, 20 mL, 25 pcs
HI7061L General Cleaning Solution, 460 mL
HI7073L Protein Cleaning Solution, 460 mL
HI7074L Inorganic Cleaning Solution, 460 mL
HI7077L Oil & Fat Cleaning Solution, 460 mL
HI8061L General Cleaning Solution in FDA approved bottle, 460 mL
HI8073L Protein Cleaning Solution in FDA approved bottle, 460 mL
HI8077L Oil & Fat Cleaning Solution in FDA approved bottle, 460 mL
ELECTRODE REFILL ELECTROLYTE SOLUTIONS
HI7071 3.5M KCl + AgCl Electrolyte, 4x30 mL, for single junction
electrodes
HI7072 1M KNO3 Electrolyte, 4x30 mL
HI7082 3.5M KCl Electrolyte, 4x30 mL, for double junction electrodes
HI8071 3.5M KCl + AgCl Electrolyte in FDA approved bottle, 4x30 mL,
for single junction electrodes
HI8072 1M KNO3 Electrolyte in FDA approved bottle, 4x30 mL
HI8082 3.5M KCl Electrolyte in FDA approved bottle, 4x30 mL, for
double junction electrodes.
ACCESSORIES
34
ORP PRETREATMENT SOLUTIONS
HI7091L Reducing Pretreatment Solution, 460 mL
HI7092L Oxidizing Pretreatment Solution, 460 mL
pH ELECTRODES
All electrodes part numbers ending in B are supplied with a BNC connector
and 1 m (3.3') cable, as shown below :
HI1043B
Glass-body, double junction, refillable, combination pH electrode.
Use: strong acid/alkali.
HI1053B
Glass-body, triple ceramic, conic shape, refillable, combination pH electrode.
Use: emulsions.
HI1083B
Glass-body, micro, Viscolene, non-refillable, combination pH electrode.
Use: biotechnology, micro titration.
HI1131B
Glass-body, single junction, refillable, combination pH electrode.
Use: general purpose.
120 mm
4.7"
12 mm
0.5"
9.5mm DIA
0.37"
"S" VERSION
HI 1043
120 mm
4.7"
12 mm
0.5"
"S" VERSION
HI 1053
120 mm
12 mm
0.5"
5 mm
0.2"
3 mm
0.12"
3.0 mm DIA
0.12"
HI 1083
120 mm
4.7"
12 mm
0.5"
9.5mm DIA
0.37"
"S" VERSION
HI 1131
35
HI1330B
Glass-body, semimicro, single junction, refillable, combination pH electrode.
Use: laboratory, vials.
HI1331B
Glass-body, semimicro, single junction, refillable, combination pH electrode.
Use: flasks.
HI1230B
Plastic-body (Ultem®), double junction, gel-filled, combination pH electrode.
Use: general, field.
HI2031B
Glass-body, semimicro, conic, refillable, combination pH electrode.
Use: semisolid products.
HI1332B
Plastic-body (Ultem®), double junction, refillable, combination pH electrode.
Use: general purpose.
120 mm
4.7"
5mm
0.2"
5mm DIA
0.2"
"S" VERSION
HI 1330
120 mm
4.7"
12 mm
0.5"
HI 1230
75 mm
2.95"
6 mm
0.25"
HI 2031
120 mm
4.7"
12 mm
0.5"
"S" VERSION
HI 1332
210 mm
8.25"
8 mm
0.3"
7.5mm DIA
0.29"
"S" VERSION
HI 1331
36
120 mm
4.7"
12 mm
0.5"
FC 100
75 mm
2.95"
6 mm
0.25"
FC 200
120 mm
4.7"
12 mm
0.5"
FC 210
120 mm
4.7"
12 mm
0.5"
9.5mm DIA
0.37"
FC 220
110 mm
4.3"
12 mm
0.5"
FC 911
FC100B
Plastic-body (Kynar®), double junction, refillable, combination pH electrode.
Use: general purpose for food industry.
FC200B
Plastic-body (Kynar®), open junction, conic, Viscolene, non-refillable,
combination pH electrode. Use: meat & cheese.
FC210B
Glass-body, double junction, conic, Viscolene, non-refillable, combination
pH electrode. Use: milk, yogurt.
FC220B
Glass-body, triple-ceramic, single junction, refillable, combination pH
electrode. Use: food processing.
FC911B
Plastic-body (Kynar®), double junction, refillable with built-in amplifier,
combination pH electrode. Use: very high humidity.
37
Kynar® is registered Trademark of Pennwalt Corp.
Ultem® is registered Trademark of General Electric Co.
HI1413B
Glass-body, single junction, flat tip, Viscolene, non-refillable, combination
pH electrode. Use: surface measurement.
ORP ELECTRODES
HI3131B
Glass-body, refillable, combination platinum ORP electrode.
Use: titration.
HI3230B
Plastic-body (Ultem®), gel-filled, combination platinum ORP electrode.
Use: general purpose.
HI4430B
Plastic-body (Ultem®), gel-filled, combination gold ORP electrode.
Use: general purpose.
Consult the Hanna General Catalog for more electrodes with screw-type or
BNC connectors.
110 mm
4.3"
12 mm
0.5"
HI 1413
150 mm
5.9"
12 mm
0.5"
"S" VERSION
HI 3131
120 mm
4.7"
12 mm
0.5"
HI 3230
"S" VERSION
120 mm
4.7"
12 mm
0.5"
HI 4430
"S" VERSION
38
EXTENSION CABLE FOR SCREW-TYPE ELECTRODES
(SCREW TO BNC ADAPTER)
HI 7855/1 Extension cable 1 m (3.3') long
HI 7855/3 Extension cable 3 m (9.9') long
OTHER ACCESSORIES
HI 710005 Voltage adapter from 115 VAC to 12 VDC (USA plug)
HI 710006 Voltage adapter from 230 VAC to 12 VDC (European plug)
HI 710012 Voltage adapter from 240 VAC to 12 VDC (UK plug)
HI 710013 Voltage adapter from 230 VAC to 12 VDC (South Africa plug)
HI 710014 Voltage adapter from 230 VAC to 12 VDC (Australia plug)
HI 76405 Electrode holder
HI 8427 pH and ORP electrode simulator with 1 m (3.3') coaxial cable
ending in female BNC connectors
HI 931001 pH and ORP electrode simulator with LCD and 1 m (3.3')
coaxial cable ending in female BNC connectors
HI 7669/2W Temperature probe with 1 m (3.3') cable
HI 92000 Windows® compatible software
HI 920010 9 to 9-pin RS232 cable
CONNECT TO
SCREW TYPE
ELECTRODES
CONNECT TO THE
BNC SOCKET
OF THE METER
HI 7855 SERIES CABLE CONNECTORS
CONNECTOR AND 3.0 mm (0.12") CABLE WITH BNC
39
RECOMMENDATIONS FOR USERS
Before using these products, make sure they are entirely suitable for the
environment in which they are used.
Operation of these instruments in residential areas could cause unacceptable
interferences to radio and TV equipment, requiring the operator to follow all
necessary steps to correct interferences.
The glass bulb at the end of the pH electrode is sensitive to electrostatic
discharges. Avoid touching this glass bulb at all times.
During operation, ESD wrist straps should be worn to avoid possible damage
to the electrode by electrostatic discharges.
Any variation introduced by the user to the supplied equipment may degrade
the instruments EMC performance.
To avoid electrical shock, do not use these instruments when voltages at the
measurement surface exceed 24 VAC or 60 VDC.
To avoid damage or burns, do not perform any measurement in microwave
ovens.
40
SALES AND TECHNICAL SERVICE CONTACTS
Australia:
Tel. (03) 9769.0666 Fax (03) 9769.0699
China:
Tel. (10) 88570068 Fax (10) 88570060
Egypt:
Tel. & Fax (02) 2758.683
Germany:
Tel. (07851) 9129-0 Fax (07851) 9129-99
Greece:
Tel. (210) 823.5192 Fax (210) 884.0210
Indonesia:
Tel. (21) 4584.2941 Fax (21) 4584.2942
Japan:
Tel. (03) 3258.9565 Fax (03) 3258.9567
Korea:
Tel. (02) 2278.5147 Fax (02) 2264.1729
Malaysia:
Tel. (603) 5638.9940 Fax (603) 5638.9829
Singapore:
Tel. 6296.7118 Fax 6291.6906
South Africa:
Tel. (011) 615.6076 Fax (011) 615.8582
Taiwan:
Tel. 886.2.2739.3014 Fax 886.2.2739.2983
Thailand:
Tel. (662) 619.0708.11 Fax (662) 619.0061
United Kingdom:
Tel. (01525) 850.855 Fax (01525) 853.668
USA:
Tel. (401) 765.7500 Fax (401) 765.7575
For e-mail contacts and a complete list of Sales and
Technical offices, please see www.hannainst.com.
MAN113
03/05
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