Hanna Instruments HI92240 Instruction Manual

HI 9224

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Instruction Manual

HI9224 - HI92240

Portable

Microprocessor

Printing and Logging

pH Meters

http://www.hannainst.com

This Instrument is in

Compliance with the CE Directives

2

Dear Customer,
Thank you for choosing a Hanna Instruments Product.
Please read this instruction manual carefully before using the

instrument.
This manual will provide you with all the necessary information for

the correct use of the instrument, as well as a precise idea of its
versatility in a wide range of applications.

These instruments are in compliance with directives EN 50081­1 and EN 50082-1.

PRELIMINARY EXAMINATION ..................................................................... 3

GENERAL DESCRIPTION ...........................................................................3

FUNCTIONAL DESCRIPTION HI9224 ..........................................................4

FUNCTIONAL DESCRIPTION HI92240 ........................................................5

SPECIFICATIONS ..................................................................................6

LCD FUNCTIONAL DESCRIPTION ................................................................7

INITIAL PREPARATION .............................................................................. 7

OPERATIONAL GUIDE ...............................................................................8

TAKING PH MEASUREMENTS ................................................................. 12

TAKING TEMPERATURE MEASUREMENTS ................................................ 12

PH CALIBRATION PROCEDURE ............................................................... 13

PRINTING / RECORDING WITH HI 9224 ................................................. 17

PRINTING / LOGGING WITH HI 92240 ................................................... 19

DATA TRANSFER TO PC ......................................................................... 25

FAULT FUNCTIONS ............................................................................... 26

MEMORY ORGANIZATION ...................................................................... 26

PRINTER MAINTENANCE ....................................................................... 27

ELECTRODE CONDITIONING AND MAINTENANCE ...................................... 29

BATTERY REPLACEMENT ....................................................................... 32

TEMPERATURE-RESISTANCE CORRELATION

FOR HANNA PH SENSITIVE GLASS .......................................................... 33

ACCESSORIES ...................................................................................... 35

ELECTRODE APPLICATION REFERENCE GUIDE .......................................... 41

WARRANTY ......................................................................................... 42

CE DECLARATION OF CONFORMITY ........................................................ 43

ISO 9000 Certified
Company since 1992

TABLE OF CONTENTS

3

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 printing/logging pH meter is supplied complete with:

• HI1230B Combination pH Electrode

• HI7669/2W Temperature Probe

• AA size Alkaline Batteries (4 pcs)

• Paper rolls (5 pcs)

• Rugged Carrying Case.

Note: Save all packing material until you are sure that the

instrument functions correctly. All defective items must be
returned in their original packaging together with the sup­plied accessories.

HI9224 and HI92240 respectively, are the first printing and printing/
logging microprocessor-based portable pH/°C meters in the world.

All pH measurements are automatically compensated for temperature
(ATC). The instruments' housing is made of rugged, lightweight mate­rial, making it truly portable.

Three memorized buffers (4.01, 7.01 and 10.01pH) and automatic
buffer recognition technology make calibration simple. One or two point
calibration is possible, and the meter has a stability indicator. The
meters come equipped with a large, easy-to-read LCD.

Measurements can be performed with lab-grade precision in the field as
well as in the laboratory without compromising accuracy.

For long term field and lab applications, these meters can be connected
to a 12VDC adapter.

When in the logging mode HI92240 will store the present measurement
into memory at a user selected interval from 1 to 180 minutes. This
information can be retrieved at a later date for printing or can be
transferred to a computer through an infrared transmitter. The internal
software allocates memory space to store up to 8000 measurements.

An optional HI9200 transmitter can be connected to a computer's
RS232 port.

The HI92240 will transfer the data in seconds through the infrared
lights with no need for a cable between the transmitter and the meter.

PRELIMINARY EXAMINATION

GENERAL DESCRIPTION

4

FUNCTIONAL DESCRIPTION HI9224

1) Electrode Connector

2) Temperature Probe Connector

3) LCD Display

4) PAPER key to move the paper up

5) ON/OFF key, to turn the meter on or off

6) CAL key to enter or exit calibration mode

7) RANGE key, to select the pH or the °C measurement modes

8) Power adapter plug

9) CFM key to confirm the calibration reading

10) BUFF key to select the second buffer value for calibration

11) PRINT key to obtain a printout

12) LOG key to enter the printing mode

HI 9224

ON/OFF

PAPER

CAL

instrum nts

e

CFM

PRINT

BUFF

RANGE LOG

3

4

5

6

7

9

10

11

12

MICROPROCESSOR PRINTING
pH METER

8

1

2

pH

5

FUNCTIONAL DESCRIPTION HI92240

1) Electrode Connector

2) Temperature Probe Connector

3) LCD Display

4) PAPER key to move the paper up

5) PRINT key to obtain a printout

6) ALT key Alternate Function Key

7) RANGE key to display the temperature or the pH

8) Power Adapter Plug for 12VDC battery charger

9) CAL key to enter or exit the calibration mode and to set up
the interval, the date and the time.

10) CON key to confirm the calibration reading and to set up the
interval, the date and the time.

11) TIME key to display the present time and the printing interval

12) LOG key to enter the logging mode

HI 92240

PRINT

PAPER

ALT

instrum nts

e

CAL

TIME

CON

RANGE LOG

3

4

5

6

7

9

10

11

12

MICROPROCESSOR LOGGING
pH METER

8

1

2

pH

6

SPECIFICATIONS

Range pH 0.00 to 14.00

°C -10.0 to 100.0

Resolution pH 0.01

°C 0.1
Accuracy pH ±0.01, excluding probe error
(@20°C/68°F) °C ±0.5, excluding probe error
Typical EMC pH ±0.03
Deviation °C ±0.8
Calibration Automatic 1 or 2 points with 3 memorized

buffers (4.01, 7.01and 10.01 pH)

Temperature Automatic from -10 to 100°C (14 to 212°F)
Compensation or fixed at 25°C without temperature probe
Electrode HI 1230B (included)
Temp. probe HI 7669/2W (included)
Input Impedance 10

12

ohms

Printer Low power impact type-belt, 14 characters

per line; 38 mm plain paper (HI 710034)
Printing Interval 5 minutes
(HI9224 only)

Printing/Logging 1, 2, 5,10, 15, 30, 60, 120 and 180 minutes
Interval

(HI92240 only)
Power supply 4x1.5V AA alkaline type/250 hours

without printing. Auto-off after 5 minutes.

External 12 VDC supply.
Environment 0 to 50°C (32 to 122°F);

0-95% RH not condensing

Dimensions 220 x 82 x 66 mm (8.7 x 3.2 x 2.6")
Shipping Weight Instrument: 500 g (18 oz);

Kit: 1.4 kg (3.1 lb.)

7

INITIAL PREPARATION

Each meter is supplied complete with batteries. Remove the back
cover, unwrap the batteries and install them while paying attention
to the polarity.

To prepare the instrument for use, connect the pH electrode to the
BNC connector located on the top of the instrument. Then connect the
temperature probe to the appropriate connector. The temperature
probe can be used independently to take temperature measurements,
or it can be used in conjunction with the
pH electrode to utilize the meter's ATC
capability. If the temperature probe is left
disconnected, a default temperature of 25°C
is assumed and the "C" symbol blinks.

To switch the HI9224 on, press the ON/OFF
key.

To switch the HI92240 on, press the RANGE
key.

To maximize battery life, the display is auto­matically switched off after 5 minutes of non-use.
However, the meter will continue to monitor (if
in the logging or recording mode) pH and
temperature. To revive the display, press the
RANGE key. Before proceeding with pH mea­surements follow the calibration procedure.

°C

RANGE

ON/OFF

RANGE

1) Primary Display

2) Secondary Display

LOG

LO BAT

pH

°C

1

2

LCD FUNCTIONAL DESCRIPTION

8

TIME

DATE

OPERATIONAL GUIDE

SET DATE / TIME / PRINTING INTERVAL (FOR
HI92240 ONLY):

Press the ALT and the TIME keys simultaneously. The display will show
the date setting. At the bottom of the display the year will be
flashing.

Use the UP or the DOWN arrow key to select the year.

When the correct year is selected, press the TIME key once.

The left digits of the display flash, showing the month.

Select the month by using the UP or the DOWN arrow key.

Press the TIME key.

The right hand side of the display showing the day will flash.

CAL

CON

CAL

TIME

ALT

RANGE

DATE

CAL

CON

TIME

DATE

9

Use the UP or the DOWN arrow key to select the correct day.

Press the ALT and the TIME keys simultaneously.

The display will now show the clock time with the printing interval
flashing.

Any interval can be selected from 1, 2, 5, 10, 15, 30, 60, 120 or
180 minutes by using the UP and the DOWN arrow keys.

Once the desired interval is selected press the TIME key once to set it.

The left digits of the display flash showing the hour.

To select the hour, press the UP or the DOWN arrow key (24 hour
clock).

To set the hour press the TIME key once.

CAL

CON

CAL

INTV

TIME

CON

CAL

TIME

ALT

RANGE

TIME

INTV

TIME

CAL

CON

TIME

10

CAL

TIME

ALT

RANGE

TIME

INTV

TIME

CAL

DATE

RANGE

pH

INTV

TIME

The right hand side of the display showing the minutes will flash.

Use the UP or the DOWN key to select the minute.

Press the ALT and the TIME keys simultaneously to leave this mode.

Your clock, date and printing interval are now set and stored in
memory even when the display is switched off.

TO VIEW DATE/TIME/PH/TEMPERATURE
(FOR HI92240 ONLY)

To view time press the TIME key. This also displays the selected
interval time.

To view the date, press the CAL arrow key when the LCD is
displaying time.

To view pH press the RANGE key.

CAL

CON

11

°C

RANGE

To view temperature when in pH mode, press the RANGE key.

If the “25.0” value with the flashing “°C” symbol is shown, it
indicates that the temperature probe is not connected.

Note: the pH value will be displayed without any symbol. The

temperature value will be displayed together with the °C
symbol.

TO VIEW PH / TEMPERATURE (WITH HI9224 ONLY)

When the instrument is turned on the display will be in pH
measurement mode. To view temperature simply press the RANGE
key. If the “25.0” value with the flashing “C” symbol is shown, it
indicates that the temperature probe is not connected.

Note: the pH value will be displayed without any symbol. The

temperature value will be displayed together with the °C
symbol.

RANGE

°C

°C

12

The temperature probe that is supplied with the HI 9224 and HI
92240 is a liquid/general purpose probe.

Taking a temperature measurement with HI 9224
and HI92240 is very easy.

Press the "RANGE" key to get into the °C mode.
The temperature value and the "°C" symbol
will be displayed on the primary display.

Secure the connection of the probe to the top of
the meter, and take the measurement (allow 1
or 2 minutes for the temperature to stabilize).

Note: When taking pH measurements, in order

to have the best accuracy and proper
temperature compensation, immerse the
temperature probe as close as possible to
the pH electrode.

RANGE

4 cm

(1½")

To take pH measurements, simply submerge the
bottom 4 cm (1½") of the electrode and the
temperature probe in the reading solution to be
tested, stir gently and allow for the electrode to
adjust and stabilize.

For greatest accuracy, it is recommended to calibrate the meter
regularly (see page 13).

The pH reading of any sample is directly effected by temperature. In
order for the meter to measure the pH accurately, it must know the
temperature. To use the meter's Automatic Temperature Compensa­tion capability, submerge the temperature
probe in the sample as close to the electrode
as possible. If the temperature probe is discon­nected, the meter assumes that the temperature
of the solution is 25°C (default temperature) and
the "°C" symbol blinks. Press the RANGE key to
show the temperature reading.

If measurements are taken successively in different samples, it is
recommended to rinse the electrode thoroughly with deionized water
or if not available tap water first and then with some of the next
sample to condition the electrode before immersing it in the sample.

4 cm

(1½")

RANGE

°C

TAKING PH MEASUREMENTS

TAKING TEMPERATURE MEASURE-

MENTS

13

pH CALIBRATION PROCEDURE

For greatest accuracy, it is recommended that the instrument is
calibrated frequently. For a faster procedure, it is possible to calibrate
at 1 point (pH 7.01), but it is always a good practice to calibrate at
2 points.

Due to electrode conditioning time the electrode must be kept
immersed a few seconds to stabilize. The meters are equipped with a
stability indicator and the user will be guided step by step with easy
indications on the display during the pH calibration. This will make
the calibration a simple and error-free procedure.

PH CALIBRATION HI 9224

1. Rinse the electrode with some pH 7.01

(HI7007) solution or clean water. Dip the
bottom 4 cm (1½") of the electrode and the
temperature probe into a beaker containing
pH7.01 solution.

2. Press the CAL key. The secondary (lower) LCD

will blink “7” to indicate that pH 7.01 is
expected and the electrode is conditioning.

3. When the “7” stops blinking, the calibration

can be confirmed. Wait 30 seconds and press
the CFM key to confirm the first buffer.

4. If everything is satisfactory the secondary

LCD will blink “4” expecting the second
buffer at pH 4.01. If wrong solution or
electrode have been used or if the buffer is
out of specifications, E1 will blink to alert
the user.

Note: If only a single point calibration is re-

quired, press CAL to leave the calibration
mode. However, it is always better to
proceed as follows with a two point calibra­tion.

4 cm

(1½")

HI 7007

CAL

CFM

CAL

14

pH

4 cm

(1½")

HI 7007

CAL

5. “4” can be changed to “10” (indicating pH

10.01) by pressing BUFF button. If you are
measuring acid samples (pH 7 or less) use
the pH 4.01 buffer (HI7004). For alkaline
solutions (pH 7 or greater) use pH 10.01
(HI7010).

6. Rinse the electrode with clean water or some

pH4.01 (or 10.01) solution. Dip the bottom 4
cm (1½") of the electrode in a beaker con­taining the second buffer.

7. When “4” (or “10”) stops blinking, indicat-

ing that the electrode has stabilized, wait
30 seconds and then press CFM again to
confirm the second calibration point.

8. The buffer reference disappears from the

secondary display and the meter is cali­brated and ready to use.

9. If the buffer is incorrect or the electrode is

defective, E2 will blink to alert the user.
Repeat the calibration procedure from the
beginning with fresh buffers. If you cannot
complete the calibration, check your elec­trode by following the conditioning and maintenance procedure
on page 29 and repeat calibration. The pH electrode might have
to be replaced if calibration cannot be successfully performed.

PH CALIBRATION HI 92240

1. Rinse the electrode with some pH 7.01

(HI7007) solution or clean water. Dip the
bottom 4 cm (1½") of the electrode and the
temperature probe into a beaker contain­ing pH7.01 solution.

2. Press the CAL key. The secondary (lower)

LCD will blink “7” to indicate that pH

7.01 is expected and the electrode is
conditioning.

BUFF

4 cm

(1½")

HI 7004

CFM

15

3. When the “7” stops blinking, the calibration

can be confirmed. Wait 30 seconds and press
the CON key to confirm the first buffer. If
wrong solution or electrode has been used or
if the buffer is out of specifications the “7” symbol will not stop
blinking to alert the user.

4. If everything is satisfactory the instrument will print a set of data

(see page 16) and will expect the second buffer at pH 4.01 or pH

10.01.

Note: If only one a single point calibration is

required, press CAL to leave the calibra­tion mode. However, it is always better
to proceed as follows with two point
calibration.

5. If you are measuring acid samples (pH 7 or less) use the pH 4.01

buffer (HI7004). For alkaline solutions (pH 7 or more) use pH

10.01 (HI7010) buffer.

6. Rinse the electrode and the temperature

probe with clean water or some pH4.01 (or

10.01) solution. Dip the bottom 4 cm (1½")
of the electrode in a beaker containing the
second buffer. The HI92240 will recognize
the buffer solution and automatically
switches to the appropriate value shown
by the blinking “4” or “10” symbol.

7. When “4” (or “10”) stops blinking, indicat-

ing that the electrode has stabilized, wait 30
seconds and then press CON again to confirm
the second calibration point.

8. A new set of data will be printed (see page

16), the buffer reference disappears from the secondary display
and the meter is calibrated and ready to use.

9. If you cannot complete the calibration, check your electrode by

following the conditioning and the maintenance procedure on
page 29 and repeat the calibration. The pH electrode might
have to be replaced if calibration cannot be successfully com­pleted.

CON

CAL

4 cm

(1½")

HI 7004

CON

16

10-01-96

*02.13

pH 7.04

-0.05 pH

10-01-96

*02.15

pH 4.00

97 %

CALIBRATION PRINTOUT (FOR HI92240 ONLY)

During calibration, the characteristics of the electrode will be printed
to record the electrode's performance over time.

After the first point calibration a first set of
data will be printed. This will consist of:
date, time, the temperature compensated
pH buffer solution value and the offset char­acteristic of the electrode in pH units.

The offset pH value should be between ±0.50pH. If values are
higher than +0.50 or lower than -0.50pH, the electrode is no
longer reliable and should be replaced.

After the second point calibration, a second
set of data will be printed. This will consist
of: date, time, temperature compensated pH
buffer solution value and the slope charac­teristic of the pH electrode in percentage of
the theoretical value of 58.17mV per pH at
20°C.

17

To print the measured values press the PRINT
key. The printout provides the following informa­tion:

a - Running sample numbers
b - Total accumulative time
c - pH value
d - Temperature in Degrees Centigrade.

RECORDING MODE (PROGRAMMED PRINTOUTS)

Press the LOG key to enter the recording mode.
The log number and page number will appear
for a few seconds on the display to indicate the
current operational mode. The meter will print
the first measurement taken in that moment,
and will print every 5 minutes thereafter until
the ON/OFF key is pressed.

The printout provides the following information:

a - A running log number.
b - A running sample number in that

particular log.
c - 5 minute printing interval indicator.
d - The total accumulative time since printing started.
e - pH value.
f - Temperature in Degrees Centigrade.

When the meter is in recording mode "LOG" is
displayed on the bottom left corner of the LCD
with the pH value on the primary display.

Press the RANGE key to read the tempera­ture on the primary display.

If no keys are pressed, the meter enters
standby mode to prolong the battery life.
While logging, during the sleep mode, the display will periodically
flash on. This is a normal indication that the meter is in the logging
mode and is currently logging readings.

PRINT

0001 *07.25

4.25

25.0

a

b
c

d

LOG

LOG INTV

==07== 0005M

0014 *01.05

7.00

25.0

a
b

c
d

e

f

RECORDING PRINT-OUT

LOG

pH

PRINTING / RECORDING WITH HI

9224

RANGE

18

ON/OFF

PRINT

Note: If the PRINT key is pressed while still in recording mode, a

printout is produced without affecting the running number.

TO STOP RECORDING

In order to quit the recording mode, press the ON/OFF key.
The running log number can be reset by simply removing the

batteries.

19

PRINTING / LOGGING WITH HI

92240

01-07-95

0026 04.03

7.07 pH

17.8 °C

a

b
c
d
e

To print the measured values shown on display,
press the PRINT key. This function can be acti­vated in normal operational mode as well as
during logging and scanning data on display (see
below). When in measurement mode, the printout provides the follow­ing information:

a - running sample number
b - date (DD-MM-YY)
c - time (HH-MM)
d - pH value
e - temperature value

LOGGING MODE

This function is suggested when remote measurements have to be taken
automatically without the necessity of an operator and for a long period
of time. In this mode data will be stored directly into memory.

Set the appropriate logging interval (see Operational Guide section
on page 8).

Press the ALT and the LOG keys simultaneously to enter the logging
mode. The log number and page number will appear for a few
seconds on the display to indicate the current operational mode. The
instrument will print a complete set of data and the "LOG" symbol will
appear on the bottom left hand-side of the LCD.

The printout provides the following information:

a - Date (DD-MM-YY)
b - A running log number
c - A running sample number (in that particular log)
d - Printing interval indicator in minutes
e - time (HH-MM)
f - pH value
g - temperature value

CAL CON

TIME LOG

ALT

RANGE

LOG

Log number

Page number

PRINT

01-07-95
==01== *0001M
0001 11.01

7.06 pH

17.5 °C

b
c

a

d
e

f

g

20

LOG

CAL CON

TIME LOG

ALT

RANGE

PRINT

To log without printing press the ALT and the PAPER keys at the
same time and the "LOG" symbol on display will start to blink. Press
ALT and PAPER again to resume logging with printing.

After approximately 5 minutes the display will switch off but the
logging function remains active.

While logging, during the sleep mode, the display will periodically
flash on. This is a normal indication that the meter is in the logging
mode and is currently logging readings.

To reactivate the display press the RANGE key.
Note Once in the logging mode, the inter-

val cannot be changed. Exit the
logging mode first (pressing the ALT
and the LOG keys) before setting the
new interval.

Note If the PRINT key is pressed while in

logging mode, a printout is produced with­out affecting the running sample number.

SAMPLE NUMBER

During logging it is possible to know the running
sample number. Press the LOG key twice and
the display will show the number of values
that have been taken since the start of the
current log.

LOGGING MODE WITH PRINTING

This function is suggested when an immediate report of the measure­ment is required in addition to the recording of the data into
memory.

Press the ALT and the LOG key simulta­neously to enter the logging mode. The log
number and page number will appear for a
few seconds on the display to indicate the
correct operational mode. The printer will

CAL

PAPER

ALT

PRINT

RANGE

CAL CON

TIME LOG

ALT

RANGE

LOG

21

print a complete set of data and the "LOG"
symbol will appear on the bottom left hand
side of the display.

If no key is pressed, the display goes blank
after about 5 minutes. During printing, the display shows the time,
interval and the “LOG” symbol.

To reactivate the display press the RANGE key.
The printout provides the following information:

a - Date (DD-MM-YY)
b - A running log number
c - A running sample number (in that particular log)
d - Printing interval indicator in minutes
e - Time (HH-MM)
f - pH value
g - Temperature value

It is always possible to switch from the logging with printing function
to the logging function. Press the ALT and the PAPER keys at the
same time and the "LOG" symbol will start to blink to indicate that
the data is now stored only into memory.

Notes:

• It is recommended to use the adapter during logging in

printing mode, especially when many printouts are going to
be taken.

• Before proceeding with logging with printing, make sure there
is enough paper for your measurements. When the paper is
finished the meter will not advise the operator and the
printouts could be lost. If this happens, data will continue to
be stored in memory, and it is always possible to print the

LOG

RANGE

CAL

PAPER

ALT

PRINT

01-07-95
==01== *0001M
0001 11.01

7.06 pH

17.5 °C

b
c

a

d
e

f

g

22

ALT

RANGE

DATE

LOG

CAL CONALT

PRINT

CAL CON

TIME LOG

ALT

RANGE

CAL CON

TIME LOG

ALT

RANGE

01-07-95

==02== 0005M

<>0010 *7.01

Log number

Total sample number

LOG EX

IT

Date/Tim

e

data at different time (see above).

• It is possible to insert a new paper roll during logging session (see
page 27)

• Once in the logging mode, the interval
cannot be changed. Exit the logging
mode first (pressing the ALT and the LOG
keys) before setting the new interval.

• If the PRINT key is pressed while in logging
mode, a printout is produced without affect­ing the running sample number.

TO STOP LOGGING

Press the ALT and the LOG keys simulta­neously, this will generate a log exit status
print out.

TO SCAN STORED DATA ON DISPLAY

Exit the log mode. Press the LOG key. On the display will appear the
log number and the page number of the previous logging session.

While pressing the ALT key, press the CON key until the log number
to scan appears on the secondary display. The primary display will
show the number of samples in that particular log.

Press the ALT and the RANGE keys simultaneously. This now shows the
date in which that log has been recorded.

23

TIME

CAL

CAL

°C

CAL

pH

CAL

Press the CAL key and the time will be displayed.

Press the CAL key and the temperature will be displayed.

Press the CAL key and the pH value will be displayed.

Continue pressing the CAL key to display one
by one all the memorized data of the same log in
the above sequence i.e. time, temperature, pH
value.

Press the CON key to revert back to sampling
time and scroll back through the samples.

To exit from the recall mode press the LOG key.

Note: this mode will not alter data into memory.

CON

LOG

24

TO PRINT STORED DATA

Having selected a log number by using ALT
and CON keys, as detailed in the chapter
"TO SCAN STORED DATA ON DISPLAY" you
can print all or part of that log section by
using the ALT and PRINT keys. The printer
will then start to print the logged section
beginning with the selected sample number
without altering the content of the memory.

Note: It is always possible to print only the

sample shown on the display by pressing
the PRINT key.

For example if 10 samples are stored in the
logging section, use the CON key to display
sample No. 5.

Sample 5 can be printed on its own using the
PRINT key.

Samples 5, 6, 7, 8, 9 and 10 can be
printed by pressing ALT and PRINT keys.

If you wish to stop the printer during the
download session press the ALT and PAPER
keys and the printer will immediately stop.

Note Before proceeding with printing, make sure there is enough

paper for the data to be printed. When the paper is finished
the meter will not advise the opera­tor and the printouts could be lost.
If this happens, stop the printer by
pressing ALT and PAPER key simul­taneously. Data will be kept in
memory.

Insert a new paper roll and repeat the instructions above
starting from the last printed sample number (see chapter
"PRINTER MAINTENANCE" on page 27 for changing paper roll).

CAL CONALT

PRINT

ALT

PRINT

CON

PRINT

PRINT

ALT

CAL

PAPER

ALT

PRINT

CAL

PAPER

ALT

PRINT

25

Windows® is registered Trademark of "Microsoft Co."
Excel© Copyright "Microsoft Co."
Lotus 1-2-3© Copyright "Lotus Co."

DATA TRANSFER TO PC

HI92240 contains infrared emitting circuitry.
Set the meter to TIME mode and simply place

your data-logger on a HI9200 Infrared Trans­mitter (ensuring that the two infrared LEDs
are placed on top of each other) and the
memory can then be downloaded to your PC
through the HI9200's RS232 port.

During the data transfer the instrument dis­plays the message "r 232".

Using the HI9200 Infrared Transmitter, all recorded data can be fed
to your Personal Computer for easy reproduction, storage or elabora­tion without the interference of cables or cords between the meter and
the transmitter.

Data transmission from the instrument to the PC is now much easier
with new HI92000 Windows® compatible application software offered
by Hanna Instruments.

HI92000 allows you to use the powerful means of the most spread
sheet programs (e.g.Excel©, Lotus 1-2-3©). Simply open your file
downloaded by HI92000 from your spread sheet program and then
it is possible to make any elaboration available with your software
(e.g. graphics, statistic analysis).

User friendly, HI92000 offers a variety of features and has an on line
help to support you throughout any situation.

To install HI92000 you need a 3.5" drive and a few minutes to follow
the instructions conveniently printed on the disk label.

TIME

26

FAULT FUNCTIONS

HI 9224 and HI 92240 are factory programmed to automatically
diagnose a fault. This is displayed with error codes on the LCD.

Error codes:
PEr0, PEr1, PEr2 = Short circuit on the system, the meter

should be returned for repair (see Warranty section).

PEr3 = Printer mechanism fault - repair needed (see Warranty

section).

PEr4 = Printer clutch jammed - reset the printer (see page 28).
PEr9 = Printer jammed - reset the printer (see page 28).

MEMORY ORGANIZATION

Capacity: 8,000 data samples which are divided into 16 pages.
Each time a new logging period starts, it automatically starts from a

new page.
If “LOGGING” is still on, and the available page is “0” the meter will

overwrite the first LOT DATA in the existing meter memory. During
logging the meter automatically returns to the oldest page in the
memory and if it contains data, it will overwrite. In this case the first
log will not correspond to the oldest set of data

It is recommended to periodically “clean” the memory. Save data
with PC if you need to keep a record and then disconnect the
batteries for about 1 minute. If you do this, remember to set the date
and time, once the batteries have been connected again.

ATTENTION:

Data are stored into memory until batteries are removed.
If replacement of the batteries is needed and data are not to be lost,

plug the adapter in and proceed with batteries replacement as
described below. Only once batteries have been replaced it is possible
to unplug the adapter without loosing the stored data.

27

PRINTER MAINTENANCE

TO CHANGE THE INK CARTRIDGE

When printouts become faint, it might be necessary to change the ink
cartridge. Contact your Hanna authorized center.

TO INSERT THE PAPER ROLL

The HI9224 and HI92240 use plain paper rolls 38 mm width. To
insert a new roll is very easy.

Open the paper cover pulling it gently.

Take the cylinder away.

Insert the paper edge in the printer slot and feed the printer by
pressing the PAPER key.

PAPER

28

Allow about 5 cm (2") to exit from the printer and replace the paper
cover.

TO RESET PRINTER

Take the battery cover off by re­moving the screws. Using a pencil
press the black button. This will
reset the printing mechanism.

Before replacing the battery cover
investigate the cause of the printer
jam (e.g. the paper caught un­der the cover and prevented printer
from advancing paper feed).

Replace the battery cover and se­cure screws.

-

-

+

+

1.5V

1.5V

-

-

+

+

1.5V

1.5V

SCREW

POTS

RESET

29

PREPARATION

Remove the protective cap.
DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT.
This is normal with electrodes and they will disappear when rinsed

with water.
During transport tiny bubbles of air may form inside the glass bulb.

The electrode cannot function properly under these conditions. These
bubbles can be removed by "shaking down" the electrode as you
would do with a glass thermometer.

If the bulb and/or junction are dry, soak the electrode in HI70300 or
HI80300 Storage Solution for at least one hour.

For refillable electrodes:

If the fill solution (electrolyte) is less than 1 cm (½") below the fill
hole, add HI7082 or HI8082 3,5M KCl Electrolyte Solution for
double junction or HI7071 or HI8071 3,5M KCl+AgCl Electrolyte
Solution for single junction electrodes.

For a faster response unscrew the fill hole screw during measurements.

ELECTRODE CONDITIONING

AND MAINTENANCE

Reference
Filling Hole

Reference
Filling Hole

Sensitive

Wire

Reference

Wire

Reference

Junction

Glass

Bulb

Glass
Bulb

Reference
Junction

Reference
Wire

Sensitive
Wire

Glass Body

pH Electrode

Plastic Body

pH Electrode

30

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 (4 cm /1½") in the sample and stir gently for

approx. 30 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

To minimize clogging and ensure a quick response time, the glass
bulb and the junction should be kept moist and not allowed to dry
out.

Replace solution in the protective cap with a few drops of HI70300 or
HI80300 Storage Solution or, in its absence, Filling Solution
(HI7071 or HI8071 for single junction or HI7082 or HI8082 for
double junction electrodes). Follow the Preparation Procedure above
before taking measurements.

Note: NEVER STORE THE ELECTRODE IN DISTILLED WATER OR DRY.

PERIODIC MAINTENANCE

Inspect the electrode and the cable. The cable used for connection to
the meter 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 it with fresh electrolyte (HI7071 or HI8071 for single junction or

HI7082 or HI8082 for double junction electrodes). Allow the electrode

to stand upright for 1 hour.
Follow the Storage Procedure above.

CLEANING PROCEDURE

General Soak in Hanna HI7061 or HI8061 General Cleaning
Solution for approximately 1 hour.

Removal of films, dirt or deposits on the membrane/junction:

- Protein Soak in Hanna HI7073 or HI8073 Protein Cleaning

31

Solution for 15 minutes.

- Inorganic Soak in Hanna HI7074 or HI8074 Inorganic

Cleaning Solution for 15 minutes.

- Oil/grease Rinse with Hanna HI7077 or HI8077 Oil and

Fat Cleaning Solution.
IMPORTANT: After performing any of the cleaning procedures rinse

the electrode thoroughly with distilled water, drain and refill the
reference chamber with fresh electrolyte, (not necessary for GEL filled
electrodes) and soak the electrode in HI70300 or HI80300 Storage
Solution for at least 1 hour before taking measurements.

TROUBLESHOOTING

Evaluate your electrode performance based on the following possibili­ties.

• Noise (Readings fluctuate up and down) could be due to:

- Clogged/Dirty Junction: Refer to the Cleaning Procedure above.

- Loss of shielding due to low electrolyte level (in refillable

electrodes only): refill with fresh HI7071 or HI8071 for single
junction or HI7082 or HI8082 for double junction electrodes.

• Dry Membrane/Junction: Soak in Storage Solution HI70300
or HI80300 for at least 1 hour.

• Drifting: Soak the electrode tip in warm Hanna Solution
HI7082 or HI8082 for one hour then flush tip with distilled

water. Refill with fresh HI7071 or HI8071 for single junction
electrodes and HI7082 or HI8082 for double junction electrodes.

• Low Slope: Refer to the cleaning procedure above.

• No Slope: Check the electrode for cracks in glass stem or bulb

and replace the electrode.

• Slow Response/Excessive Drift: Soak the tip in Hanna Solu­tion HI7061 or HI8061 for 30 minutes, rinse thoroughly in
distilled water and then follow the Cleaning Procedure above.

32

When the batteries are run down
"LOBAT" is displayed on the Liquid
Crystal Display to warn the user.

Battery replacement must only take
place in a non hazardous area using

1.5V alkaline AA type batteries .

In order to replace run down batter­ies, simply remove the two screws on
the rear cover of the instrument and
replace the four 1.5V AA batteries
with new ones, paying attention to
the correct polarity.

A 12VDC power source can also be
used to power the unit (see the Acces­sories section page 40).

Note The instrument uses the following configuration.

It is recommendable to purchase the Hanna HI710005 and HI710006
voltage adapters that use the proper polarity configuration.

Anyway, HI 9224 and HI 92240 can be used with other adapters.
In this case, remember to check the correct polarity of your adapter
before connecting it to the meter.

+

-

LO BAT

pH

-

-

+

+

1.5V

1.5V

-

-

+

+

1.5V

1.5V

SCREW

POTS

RESET

BATTERY REPLACEMENT

33

TEMPERATURE-RESISTANCE CORRELATION

FOR HANNA PH SENSITIVE GLASS

The resistance of glass electrodes partially depends on the tempera­ture. The lower the temperature, the higher the resistance. It takes
longer 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 10°C.

Since the resistance of the pH electrode is in the range of 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 for a stable pH reading.

The pH electrode's life also depends on the temperature. If constantly
used at high temperatures, the electrode life is drastically reduced.

Typical Electrode Life
Ambient Temperature 1- 3 years
90 °C Less than 4 months

120°C Less than 1 month

-20-2

0

-10

0+10+20+30+40+50+60+70+80+90

°

C

-10

-10

Ω

-10

-10

-10

-10

Ω

2x10

9

1x10

9

2x10

8

1x10

8

2x10

7

1x10

7

-40 -20 0 +10 +20 +30 +40+50 +60 + 70 +80 +90 °C

34

Alkaline Error

1.0 Mol L-1 Na

+

0.1 Mol L-1 Na

+

Sodium Ion Correction for the Glass at 20-25°C
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

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 the
alkaline error and causes the pH to be underestimated. Hanna's
glass formulations have the indicated characteristics.

35

ACCESSORIES

pH CALIBRATION SOLUTIONS

HI 70004P pH 4.01 Buffer Sachets, 20mL, 25 pcs
HI 70007P pH 7.01 Buffer Sachets, 20mL, 25 pcs
HI 70010P pH 10.01 Buffer Sachets, 20mL, 25 pcs
HI 7004L pH 4.01 Buffer Solution, 460 mL
HI 7006L pH 6.86 Buffer Solution, 460 mL
HI 7007L pH 7.01 Buffer Solution, 460 mL
HI 7009L pH 9.18 Buffer Solution, 460 mL
HI 7010L pH 10.01 Buffer Sol., 460 mL

pH CALIBRATION SOLUTIONS IN FDA APPROVED
BOTTLES

HI 8004L pH 4.01 Buffer Solution, 460 mL
HI 8006L pH 6.86 Buffer Solution, 460 mL
HI 8007L pH 7.01 Buffer Solution, 460 mL
HI 8009L pH 9.18 Buffer Solution, 460 mL
HI 8010L pH 10.01 Buffer Solution, 460 mL

ELECTRODE STORAGE SOLUTION

HI 70300L Storage Solution, 460 mL

ELECTRODE STORAGE SOLUTION IN FDA APPROVED
BOTTLES

HI 80300L Storage Solution, 460 mL

ELECTRODE CLEANING SOLUTIONS

HI 70000P Electrode Cleaning Sachets, 20 mL, 25 pcs
HI 7061L General Cleaning Sol., 460 mL
HI 7073L Protein Cleaning Sol., 460mL
HI 7074L Inorganic Cleaning Sol., 460mL
HI 7077L Oil & Fat Cleaning Sol.,460 mL

ELECTRODE CLEANING SOLUTIONS IN FDA
APPROVED BOTTLES

HI 8061L General Cleaning Solution, 460 mL
HI 8073L Protein Cleaning Solution, 230 mL
HI 8077L Oil & Fat Cleaning Solution, 460mL

REFILL ELECTROLYTE SOLUTIONS

HI 7071 3.5M KCl + AgCl Electrolyte, 4x50mL, for single

junction electrodes

HI 7072 1M KNO3 Electrolyte, 4x50 mL

36

HI 7082 3.5M KCl Electrolyte, 4x50 mL, for double junction

electrodes

REFILL ELECTROLYTE SOLUTIONS IN FDA APPROVED
BOTTLES

HI 8071 3.5M KCl + AgCl Electrolyte, 4x50mL, for single

junction electrodes

HI 8072 1M KNO3 Electrolyte, 4x50 mL
HI 8082 3.5M KCl Electrolyte, 4x50 mL, for double junction

electrodes

pH ELECTRODES

All electrodes part numbers ending in B are supplied with a BNC
connector and 1 m (3.3') cable.

HI 1043B

Glass-body, double junction, refillable, combination pH electrode. Use:
strong acid/alkali.

HI 1053B

Glass-body, triple ceramic, conic shape, refillable, combination pH
electrode. Use: emulsions.

HI 1083B

Glass-body, micro, Viscolene, non-refillable, combination pH electrode.
Use: biotechnology, micro titration.

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

37

75 mm

2.

95

"

6 mm

0.25"

"

"

HI 2031

120 mm

4.7"

12 mm

0.5"

9.5mm DIA

0.37"

"S" VERSION

HI 1131

120 mm

4.7"

5mm

0.2"

5mm DIA

0.2"

"S" VERSION

HI 1330

210 mm

8.25"

8 mm

0.3"

7.5mm DIA

0.29"

"S" VERSION

HI 1331

120 mm

4.7"

12 mm

0.5"

"

"

HI 1230

HI 1131B

Glass-body, single junction, refillable, combination pH electrode.
Use: general purpose.

HI 1330B

Glass-body, semimicro, single junction, refillable, combination pH
electrode. Use: laboratory, vials.

HI 1331B

Glass-body, semimicro, single junction, refillable, combination pH
electrode. Use: flasks.

HI 1230B

Plastic-body (Ultem®), double junction, gel-filled, combination pH
electrode. Use: general, field.

HI 2031B

Glass-body, semimicro, conic, refillable, combination pH electrode. Use:
semisolid products.

Ultem® is registered Trademark of "General Electrics Co."

38

120 mm

4.7"

12 mm

0.5"

"S" VERSION

HI 1332

120 mm

4.7"

12 mm

0.5"

FC 100

75 mm

2.95"

6 mm

0.25"

FC 200

HI 1332B

Plastic-body (Ultem®), double junction, refillable, combination pH
electrode. Use: general purpose.

FC 100B

Plastic-body (Kynar®), double junction, refillable, combination pH
electrode. Use: general purpose for food industry.

FC 200B

Plastic-body (Kynar®), open junction, conic, Viscolene, non-refillable,
combination pH electrode. Use: meat & cheese.

FC 210B

Glass-body, double junction, conic, Viscolene, non-refillable, combina­tion pH electrode. Use: milk, yogurt.

FC 220B

Glass-body, triple-ceramic, single junction, refillable, combination pH
electrode. Use: food processing.

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

Kynar® is registered Trademark of "Pennwalt Corp."
Ultem® is registered Trademark of "General Electrics Co."

39

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

FC 911B

Plastic-body (Kynar®), double junction, refillable with built-in ampli­fier, combination pH electrode. Use: very high humidity.

HI 1413B

Glass-body, single junction, flat tip, Viscolene, non-refillable, combina­tion pH electrode. Use: surface measurement.

EXTENSION CABLES FOR SCREW-TYPE ELECTRODES
ONLY (SCREW TO BNC CONNECTOR):

HI7855/1 Extension cable 1m (3.3') long
HI7855/3 Extension cable 3m (9.9') long
HI7855/5 Extension cable 5m (16.5') long
HI7855/10 Extension cable 10m (33') long
HI7855/15 Extension cable 15m (49.5') long

110 mm

4.3"

12 mm

0.5"

FC 911

110 mm

4.3"

12 mm

0.5"

HI 1413

Kynar® is registered Trademark of "Pennwalt Corp."

40

Windows® is registered Trademark of "Microsoft Co."

POWER UNITS:

HI710005 Voltage adapter from 115 VAC to 12 VDC
HI710006 Voltage adapter from 230 VAC to 12 VDC

OTHER ACCESSORIES

HI 710031 Rugged carrying case
HI 710034 Plain Paper Spare Rolls (10 pcs)
HI 710035 Spare Ink Cartridge (1 pc)
HI 721308 1.5V AA batteries (10 pcs)
HI 76405 Electrode holder
HI 7669/2W Temperature probe with 1 m (3.3') screened cable
HI 8427 pH and ORP electrode simulator with 1 m (3.3')

coaxial cable ending in female BNC connectors (HI
7858/1)

HI 9200 Infrared Transmitter
HI 92000/16 Windows® 3.11 compatible software for data transfer

to PC

HI 92000/32 Windows® 95 compatible software for data transfer to

PC

HI 931001 pH and ORP electrode simulator with LCD display 1 m

(3.3') coaxial cable ending in female BNC connectors
(HI 7858/1)

MANPHPRNR2Instruction manual

41

Applicat ion Electrodes

1. Aquarium HI 1332B, HI 1911B, HI1312S

2. Bath-water HI 1910B, HI 1130B, HI1110S

3. Beer HI 1131B, HI 1111S

4. Bread HI 2031B, FC200B, HI2020S, FC200S

5. Cheese FC200B, FC200S

6. Dairy products FC 911B, FC100B

7. Dirty water HI 1910B, HI1912B

8. Emulsions HI 1053B, HI 1050S

9. Environment HI 1230B, HI 1210S

10. Flasks HI 1331B, HI 1310S

11. Food industry general use FC 911B, FC100B

12. Fruit FC200B, FC 220B, FC200S

13. Fruit juices, organic FC210B

14. Galvanizing waste solution HI 1130B, HI1912B, HI1110S

15. Heavy-duty applications HI 1135B, HI1115S

16. High purity water HI 1053B, HI 1050S

17. Horticulture HI 1053B, FC200B, HI1050S, FC200S

18. In-line applications HI 1134B, HI1135B, HI 2114B, HI2910B,

HI1114S, HI1115S

19. Laboratory general use HI 1131B, HI1230B, HI1332B, HI1330B
HI1111S, HI 1210S, HI1312S, HI 1310S

20. Leather HI1413B, HI1410S

21. Lemon juice FC100B

22. Meat FC200B, HI 2031B, FC200S, HI2020S

23. Micro plate sampling of less than HI 1083B, HI 1080S

100 mL

24. Milk and Yogurt FC210B

25. Paints HI 1053B, HI1050S

26. Paper HI 1413B, HI1410S

27. Photographic chemicals HI 1230B, HI1210S

28. Quality control HI 1332B, HI 1312S

29. Sausages FC200B, HI2031B, FC200S, HI2020S

30. Semi-solid products HI 2031B, HI2020S

31. Skin HI 1413B, HI 1410S

32. Soil samples HI 1230B, HI 1210S

33. Solvents HI 1043B, HI1040S

34. Strong acid HI 1043B, HI1040S

35. Submersion application HI 1130B, HI1110S

36. Surface measurements HI1413B, HI1410S

37. Swimming pool H I1130B, HI 2114B, HI 2910B

38. Titrations with constant HI 1131B, HI1111S

temperature range

39. Titrations with wide temperature HI 1131B, HI1111S

range

40. Very high humidity FC 911B, HI 1912B, HI1911B

41. Vials and test tube HI 1330B, HI1310S

42. Wine processing FC 220B

B = BNC-type connector
S = Screw-type connector

ELECTRODE APPLICATION

REFERENCE GUIDE

42

WARRANTY

All Hanna Instruments meters are warranted for two years
against defects in workmanship and materials when used for their
intended purpose and maintained according to instructions. The

electrodes and the probes are warranted for a period of six
months. This warranty is limited to repair or replacement free of

charge.
Damages 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 failure. 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 Cus­tomer Service department and then send it with shipping costs
prepaid. When shipping any instrument, make sure it is properly
packaged for complete protection.

To validate your warranty, fill out and return the enclosed warranty
card within 14 days from the date of purchase.

All rights are reserved. Reproduction in whole or in part is
prohibited without the written consent of the copyright owner,
Hanna Instruments Inc., 584 Park East Drive, Woonsocket, Rhode
Island, 02895 , USA.

Hanna Instruments reserves the right to modify the design, construc­tion and appearance of its products without advance notice.

43

DECLARATION OF CONFORMITY

We

Hanna Instruments Srl
V.le delle industrie 12
35010 Ronchi di Villafranca (PD)
ITALY

herewith certify that the pH meters

have been tested and found to be in compliance with the following regulations:

IEC 801-2 Electrostatic Discharge
IEC 801-3 RF Radiated
IEC 801-4 Fast Transient
EN 55022 Radiated, Class B

Date of Issue: 30-11-1995

D.Volpato - Engineering Manager

On behalf of

Hanna Instruments S.r.l.

HI 9224 HI 92240

CE DECLARATION OF CONFORMITY

Recommendations for Users

Before using these products, make sure that they are entirely suitable for the environment in which they
are used.

Operation of these instruments in residential area could cause unacceptable interferences to radio and TV
equipments, requiring the operator to take all necessary steps to correct interferences.

The glass bulb at the end of the electrode is sensitive to electrostatic discharges. Avoid touching this glass
bulb at all time.

During calibration of instruments, ESD wrist straps should be worn to avoid possible damage to the electrode
by electrostatic discharge.

Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC
performance.

To avoid electrical shock, do not use these instruments when voltages at the measurement surface exceed
24VAC or 60 VDC.

To avoid damages or burns, do not perform any measurement in microwave ovens.
In particular cases HI 9224 and HI 92240 could turn off. In these cases they can be turned on by pressing

the ON/OFF key and the RANGE key respectively.

MANPHPRNR2

07/98

http://www.hannainst.com

PRINTED IN PORTUGAL