Hanna Instruments HI 9219 User manual

HI9017 - HI9218
HI9219 - HI9318
Microprocessor
Bench-top
pH Meters with
RS232C
Instruction Manual
PAPER PRINT CLEAR
ON OFF
DATE RANGE
CAL
ABC
789
456
423
+/- .PGM
CON
+/-
TEMP.
pH
°C
ins
e
rum ns
SAMPLE DATE
0P
GMto exit fromanyprogram
1P
GMto setsamplingnumber, timeanddate
2P
GMto manuallyentercalibrationbuffervalue
3P
GMto printcalibrationdata
4P
GMto printsampledata untilspecifiedtime
5P
GMto printsampledata untilendpoint
6P
GMto setpH/mValarm
7P
GMto selectdifferentworkinglanguage
8P
GMto printionconcentration
9P
GMto enterRS232CESCcode
CLEARto clearentry
PROGRAMS
http://www.hannainst.com These Instruments are 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 instru-
ment.
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 CSA, UL and directives
(EN 50081-1 and EN50082-1).
ISO 9000 Certified
Company since 1992
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
GENERAL DESCRIPTION ........................................................................... 3
PRELIMINARY EXAMINATION ................................................................... 3
FRONT PANEL AND SPECIFICATIONS:
HI9017 ................................................................................... 5
HI9218 & HI9219 ................................................................................. 7
HI9318 ................................................................................... 9
REAR PANEL CONNECTIONS .................................................................. 11
OPERATIONAL GUIDE ............................................................................ 13
PH CALIBRATION ................................................................................. 18
PH VALUES AT VARIOUS TEMPERATURE ................................................. 26
TEMPERATURE CALIBRATION ................................................................. 26
HOW TO SET DATE & TIME (HI9218 & HI9219) .................................... 27
PROGRAMS OF HI9017 ......................................................................... 28
PROGRAMMING LOGGER FUNCTIONS HI9318 ........................................ 37
TROUBLESHOOTING GUIDE ................................................................... 45
INTERFACE WITH COMPUTER ................................................................. 46
ELECTRODE CONDITIONING AND MAINTENANCE ..................................... 50
TEMPERATURE-RESISTANCE CORRELATION FOR
HANNA PH SENSITIVE GLASS ................................................................ 53
ACCESSORIES ................................................................................. 54
ELECTRODE APPLICATION REFERENCE GUIDE .......................................... 61
WARRANTY ................................................................................. 62
CE CERTIFICATE OF CONFORMITY ........................................................... 63

3
HI9017, HI9218, HI9219 and HI9318 are microprocessor-based bench-
top meters designed to meet the most stringent demands of the laboratory.
They feature:
•user friendly rubber keyboard
•automatic calibration with memorized buffers values
•automatic or manual temperature compensation
•storage of calibration data even after the meters are shut off
•error codes to guide the user in calibration and troubleshooting
All these models incorporate a standard RS232C output for communi-
cation with a computer.
The HI76405 electrode holder provided will hold your pH electrode
and temperature probe directly over the sample vessel which can be
placed on the enamel coated base of the holder. A magnetic stirrer
can also be placed on the enamel coated base if sample agitation is
required. The enamel coating is impervious to most chemicals and the
heavy steel base will not tip over easily.
These meters are perfect for use in Q.C. labs, R&D labs, environmen-
tal testing, industrial processing, chemical treatment, waste water
treatment, drinking water analysis, titration, hydroponics, general ag-
riculture, food processing and anywhere accurate pH measurements
are required.
•HI9017 pH/mV/°C meter automatically recognizes three stan-
dard calibration buffer values (pH 4.01, 7.01, 10.01). The pH
and temperature values are shown separately on the LCDs. A wide
mV range and high resolution allow for ORP or ion-selective
measurements (the range automatically switches from ISE to ORP
when readings exceed ±399.9 mV).
HI9017 comes supplied with HI1131B glass-body combination
pH electrode (with 1m/3.3' cable), HI7669/2W temperature probe
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it to
make sure that no damage has occurred during shipping. If there is
any damage, notify your Dealer.
Note: Save all packing material until you are sure that the instrument
functions correctly. All defective items must be returned in the
original packing with the supplied accessories.

4
(with 1m/3.3' cable), 12VDC adapter (HI710005 or HI710006),
pH 4.01 & pH 7.01 buffer solutions (20 mL each), HI7071
electrolyte solution (30 mL), HI76405 electrode holder and a
dust cover.
•HI9218 and HI9219 are programmable pH/°C meter with built-
in printer. They print pH values together with temperature, time
and date. These meter provide you with pH and temperature
readings simultaneously and separately on the LCDs and feature a
unique stability indicator. When the pH electrode stabilizes in the
sample, the "NO" on the LCD changes to "YES". This indicates that
the reading is correct and can be recorded. They automatically
recognize three standard buffers (4.01, 7.01 and 10.01 pH) for
calibration purposes. These meters are extremely user-friendly,
giving step-by-step instructions on the printer at every stage to
help the user.
HI9218 has been specifically designed for the food industry.
HI9218 comes supplied with FC100B plastic-body combination
pH electrode (with 1m/3.3' cable) while HI9219 comes with
HI1131B glass-body combination pH electrode (with 1m/3.3'
cable). HI9218 and HI9219 are also supplied with: HI7669/2W
temperature probe (with 1m/3.3' cable), 12VDC adapter (HI710005
or HI710006), pH 4.01 & pH 7.01 buffer solutions (20 mL each),
HI7071 electrolyte solution (30 mL), 5 replacement rolls of printer
paper, HI76405 electrode holder and a dust cover.
•HI9318 is a pH/mV/°C meter designed for logging data in various
applications. This programmable printing meter prints pH or mV
values as well as sample number, temperature, time and date.
The pH/mV and temperature values are displayed on separate
LCDs for ease of reading. It recognizes and memorizes three
different standard buffers (pH 4.01, 7.01 and 10.01) for calibra-
tion purposes. The printer can be programmed to print in one of 6
different languages (English, French, German, Italian, Spanish or
Swedish). Once your language is selected you can simply prompt
the meter to calibrate and it will print step-by-step instructions
through the entire process making this meter perfect for use by
even non-technical staff members.
HI9318 comes supplied with HI1131B glass-body combination
pH electrode (with 1m/3.3' cable), HI7669/2W temperature probe
(with 1m/3.3' cable), 12VDC adapter (HI710005 or HI710006),
pH 4.01 & pH 7.01 buffer solutions (20 mL each), HI7071
electrolyte solution (30 mL), 5 replacement rolls of printer paper,
HI76405 electrode holder and a dust cover.

5
FRONT PANEL ANDFRONT PANEL AND
FRONT PANEL ANDFRONT PANEL AND
FRONT PANEL AND
SPECIFICATIONS OF HSPECIFICATIONS OF H
SPECIFICATIONS OF HSPECIFICATIONS OF H
SPECIFICATIONS OF HII
II
I90179017
90179017
9017
1. Program descriptions
Briefly describes the 6 programs
2. Temperature LCD
This LCD displays the temperature measured by the HI7669/2W
probe or the value that was manually set through the keyboard.
If the temperature has been set manually, the "°C" symbol will
flash.
When the temperature probe is connected the measured tempera-
ture is displayed and the "°C" symbol stops flashing.
When the temperature measured by the probe is out of range (-10
to 125°C) the "Err3" signal appears.
3. pH and mV LCD
This LCD displays the pH or mV reading (pH and mV is toggled
with the RANGE key). The corresponding pH or mV symbol will be
displayed along with the measured value.
An error signal ("Err1", "Err2", "Err4" or "Err5") will appear on this
display to indicate that the range is exceeded or that the buffer
used for calibration is not recognized by the meter's microproces-
sor.
4. Keyboard
ENTER A key used in programming.
ENTER B key used in programming.
CLEAR key to clear entry or silence alarm.
PGM key to select a program.
OFF
ON
ins rum n s
CON
RANGE
+/-
CAL
TEMP
ENTER
AENTER BCLEAR
789
4
56
1 23
0
.
PGM
HI 9017 MICROPROCESSOR pH METER
PROGRAMS
to enter temperature alarm
to enter pH end point alarm
to enter RS 232 ESC code
to exit from any program
to clear entry or silence alarm
to manually enter calibration buffer value
to enter pH alarm
to enter mV alarm
2
PGM
BA
1
PGM
BA
3
PGM
BA
4
PGM
BA
5
PGM
BA
6
PGM
A
0
PGM
ENTER ENTER
ENTER ENTER
ENTER ENTER
ENTER ENTER
ENTER ENTER
ENTER
1st buffer 2nd buffer
upper limit lower limit
upper limit lower limit
upper limit lower limit
end point value alert value
ESC code
CLEAR
Standard pH buffer - 4.01, 7.01, 10.01
pH°C
3
1
4
2

6
SPECIFICATIONS HI 9017
Range pH 0.00 to 14.00
ISE ± 399.9 mV
ORP ±1999 mV
°C -10.0 to 125.0
Resolution pH 0.01
ISE 0.1 mV
ORP 1 mV
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) ISE ±0.2 mV
ORP ±1 mV
°C ±0.5
Typical EMC pH ±0.02
Deviation ISE ±0.2 mV
ORP ±1 mV
°C ±0.5
Calibration 2 point with automatic recognition of 3
buffers (pH 4.01, 7.01, 10.01)
Temperature -10° to +125°C (14 to 257 °F) completely
automatic with HI7669/2W temperature
probe; manual by means of keyboard
Comp. Interface RS232C
Electrode HI1131B Glass body combination
pH electrode (included)
Temperature Probe HI7669/2W Temperature probe (included)
Input Impedance 1012 Ohm
Power Power socket for 12VDC
Environment 0 to 50°C (32 to 122°F); RH 95%
Dimensions 230 x 170 x 70mm (9.1 x 6.7 x 2.7")
Weight 1.3 Kg (2.9 lb.); kit w/holder 3.2 Kg (7 lb.)
ON key to switch the instrument on.
OFF key to switch the instrument off.
RANGE key to switch range from pH to mV or vice versa.
CAL key used in calibration with standard pH buffers (pH
4.01, 7.01, 10.01)
CON key confirmation of calibration data
+/- key entering negative values
TEMP key used for manual temperature adjustment
0 to 9 keys numeric and Decimal keys for numeric data input

7
FRONT PANEL ANDFRONT PANEL AND
FRONT PANEL ANDFRONT PANEL AND
FRONT PANEL AND
SPECIFICATIONS OF HI9218 & HI9219SPECIFICATIONS OF HI9218 & HI9219
SPECIFICATIONS OF HI9218 & HI9219SPECIFICATIONS OF HI9218 & HI9219
SPECIFICATIONS OF HI9218 & HI9219
1. Printer
Plain paper printer
2. Temperature LCD
This LCD displays the temperature measured by the HI7669/2W
probe or the value that was manually set through the keyboard. If
the temperature has been set manually, the "°C" symbol will
flash. When the temperature probe is connected the measured
temperature is displayed and the "°C" symbol stops flashing.
When the temperature measured by the probe is out of range (-
10.0 to 125.0°C) the "Err3" signal appears.
3. pH LCD
This LCD displays the pH reading. The corresponding pH symbol
will be displayed along with the measured value. An error
signal ("Err1", "Err4" or "Err5") will appear on this display to
indicate that the range is exceeded or that the buffer used for
calibration is not recognized.
4. Small LCD
This LCD normally displays the time. When the DATE button is
pressed, the date will be displayed. When the READY key is
pressed, the display shows "NO" while the electrode is stabilizing
and "YES" once the reading is stable.
5. Keyboard
ON/OFF key to switch the instrument "ON" or "OFF".
Note: Press OFF before unplugging instrument, otherwise, calibration
data and time setting could be lost.
2
3
15
4
PAPER PRINT
ON OFF
DATE TIME
CAL CFM
UP DOWN
STABILITY INDICATOR
READY
Press to check
reading stability.
Wait
Reading is stable.
Press to obtain
a copy.
NO
YES
PRITING pH METER
WITH STABILITY INDICATOR
HI 9218
pH
°C
Foodcare
Insert new paper roll. Pass leading end under guide plate and
press PAPER to feed paper through the printer.
Pass leading end through ribbon cassette, with ribbon at the
front and press cassette into position
Slide cover to the left to open.
To change paper roll or ink ribbon
Push ribbon cassette as marked - to release
ins
e
rum ns
PRINT

8
SPECIFICATIONS HI9218 HI9219
Ranges pH 0.00 to 14.00
°C -10.0 to 125.0
Resolution pH 0.01
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) °C ±0.5
Typical EMC pH ±0.04
Deviation °C ±1.5
Calibration 2 point with automatic recognition of
3 buffers (pH 4.01, 7.01, 10.01)
Temperature -10° to 125°C (14 to 257°F) Completely
Compensation automatic with HI 7669/2W temperature
probe; manual by means of keyboard
Comp. Interface RS232C
Electrode HI9218: FC100B plastic body combination
pH electrode (included)
HI9219:HI1131B Glass body combination
pH electrode (included)
Temperature HI7669/2W Temperature probe (included)
Probe
Input Impedance 1012 Ohm
Display 2 large 4-digit LCD for pH and temperature
with symbols 1 small LCD for date/time and
stability indicator
Printer 1 x 16 line dot matrix printer,
paper width: 44 mm,
roll diameter: 35 mm
Power Supply Power socket for 12VDC
Environment 0 to 50°C (32 to 122°F); RH 95%
Dimensions 230x170x70mm (9.1x6.7x2.7")
Weight 1.3 Kg (2.9 lb.);
kit w/holder 3.2 Kg (7 lb.)
DATE/TIME key to display date and time.
CAL key to enter calibration mode.
CFM key to confirm memorized buffers 7.01 and 4.01/10.01.
UP/DOWN key to set manual temperature compensation and date/time.
PAPER key manual paper feed control.
PRINT key prints pH value together with temperature, date
and time.
READY key stability indicator to ensure correct pH reading or
to enable calibration.

9
PAPER PRINT CLEAR
ON OFF
DATE RANGE
CAL
ABC
789
456
423
+/- . PGM
CON
+/- TEMP.
pH
°C
ins
e
rum ns
SAMPLE DATE
0 PGM to exit from any program
1 PGM to set sampling number, time and date
2 PGM to manually enter calibration buffervalue
3 PGM to print calibration data
4 PGM to print sample data until specified time
5 PGM to print sample data until end point
6 PGM to set pH/mV alarm
7 PGM to select different working language
8 PGM to print ion concentration
9 PGM to enter RS232C ESC code
CLEAR to clear entry
PROGRAMS
FRONT PANEL ANDFRONT PANEL AND
FRONT PANEL ANDFRONT PANEL AND
FRONT PANEL AND
SPECIFICATIONS OF HSPECIFICATIONS OF H
SPECIFICATIONS OF HSPECIFICATIONS OF H
SPECIFICATIONS OF HII
II
I93189318
93189318
9318
1. Program descriptions Briefly describes the 9 programs
2. Printer Plain paper printer
3. Temperature LCD This LCD displays the temperature. If
the temperature has been set manually, the "°C" symbol will
flash. When the temperature probe is connected the measured
temperature is displayed and the "°C" symbol stops flashing.
When the temperature measured by the probe is out of range (-10
to 125°C) the "Err3" signal appears.
4. pH and mV LCD This LCD displays the pH or mV reading
(pH and mV is toggled with the RANGE key). The corresponding
pH or mV symbol will be displayed along with the measured
value. An error signal ("Err1", "Err2", "Err4" or "Err5") will appear
on this display to indicate that the range is exceeded or that the
buffer used for calibration is not recognized.
5. Sample LCD Displays the sample number of the current lot.
6. Time and Date LCD Displays the Time as HH.MM. and the
date as MM.DD. This LCD also displays any numeric data entered
from the keyboard to show the user the entered values.
7. Keyboard
PAPER key manual paper feed control. Press and hold this button
and the printer will advance the paper roll
PRINT key prints the time, date, sample #, and pH/mV values
CLEAR key cancels wrong data entered during programming
ON key to switch the instrument on
OFF key to switch the instrument off.
DATE key allows to display the month and day or time in hours
and minutes
3
4
6
5
7
2
1

10
SPECIFICATIONS HI9318
Ranges pH 0.00 to 14.00
ISE 0 to ±399.9 mV
ORP 0 to ±1999 mV
°C -10.0 to 125.0
Resolution pH 0.01
ISE 0.1mV
ORP 1 mV
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) ISE ±0.2 mV
ORP ±1 mV
°C ±0.5
Typical EMC pH ±0.04
Deviation ISE ±2.5 mV
ORP ±3 mV
°C ±1.5
Calibration Automatic at pH 4, 7, 10 or at any two
buffer values with program 2
Offset ±1pH
Slope From 85 to 105%
Input Impedance 1012 Ohm
Temperature -10° to 125°C (14 to 257°F) completely
Compensation automatic with HI 7669/2W temp. probe;
manual by means of keyboard
Display 2 large 4 digit LCDs for pH/mV and
Temperature with symbols and one
LCD for date/time and sample #
Printer Dot matrix, 44mm wide paper
Power Supply Power socket for 12VDC
Languages English, German, French,
Spanish, Italian & Swedish
Electrode HI1131B Glass body combination
pH electrode (included)
Temperature Probe HI7669/2W Temperature probe (included)
Environment 0 to 50°C (32 to 122°F); RH 95%
Dimensions 230 x 170 x 70mm (9.1 x 6.7 x 2.7")
Weight 1.3kg (2.9 lb.); Kit: 3.4 Kg (7.4lb.)
RANGE key selects pH or mV readings to be displayed on the right LCD
CAL key to enter into the calibration mode
CON key for confirmation of buffer value during calibration
+ / - key select + or - value for manual temperature compensation
TEMP key allows to select temperature manually when the
temperature probe is not connected
PGM key selects any of the 9 available programs
0 to 9 keys numeric and Decimal keys for numeric data input

11
1) BNC male connector for single or combination electrode. Will
accept any pH or ORP electrode with a standard BNC connector.
2) Jack bush connector for reference electrode
3) Banana bush connector for reference electrode
When the electrode attached to the BNC does not have a refer-
ence, connect the reference to one of these sockets (2 choices for
different diameters).
4) Temperature probe socket for use with the HI7669/2W.
5) Reset button.
6) RS 232C socket for serial communication.
7) DC Power Socket (for HI710005 or HI710006).
Electrode and probe connections
For combination pH (or ORP for HI9017 and HI9318) electrodes
(with internal reference) plug the electrode's BNC to the socket pro-
vided (#1).
For electrode with separate reference (see page 58), connect the
measuring electrode's BNC to the BNC socket (#1) and the reference
electrode's jack to the socket provided (#2 or #3).
For temperature measurements and automatic temperature compen-
sation connect the temperature probe to the °C socket (#4).
RESET button
The RESET button (#5) is used when the instrument displays errone-
ous messages due to strong electrical interference or when the
instrument's power supply was disconnected before the meter was
switched off. Press the RESET button and restart the entire operation.
COMBINATION
pH
ELECTRODE REFERENCE
ELECTRODE
TEMPERATURE
PROBE RESET
RS-232
DSR
RXD
TXD
DTR
GND
ooooo
oooo
51
96
ooooo
oooo
123 4 5 6 7
REAR PANEL CONNECTIONSREAR PANEL CONNECTIONS
REAR PANEL CONNECTIONSREAR PANEL CONNECTIONS
REAR PANEL CONNECTIONS

12
+
-
Power connection
Plug the 12VDC adapter (HI710005 or HI710006) into the DC socket
(#7).
Plug the adapter into the mains.
Note: The instrument uses the following configuration.
It is recommendable to use the Hanna HI7710005 or HI710006
voltage adapters (supplied witht the meters) that use the proper
polarity configuration.
The meters can also be used with other adapters. In this case, remem-
ber to check the correct polarity of your adapter before connecting it to
the meter.
Note: Make sure the main line is protected by a fuse.
Note: HI9017, HI9218, HI9219, HI9318 use a rechargeable battery
to retain the pH calibration data only. It lasts approximately one
month when fully charged. The battery is automatically charged
any time the meter is plugged-in (either turned on or off).
Notes:
1) If you need to unplug the instrument, press the OFF key before
disconnecting the meter from the mains. Only in this case will
the instrument retain the memorized data. Otherwise, the in-
strument needs to be re-calibrated. In the case of a power
failure while the instrument is operational , re-calibration is
required.
2) When the instrument is initially switched on, the microprocessor
checks if any calibration data is in memory (i.e. if the offset is
within ±1 pH and the slope between 70 - 105%). If the
calibration data are not memorized, the offset and slope of the
instrument will be set to 0 mV and 100% respectively.

13
pH°C
4 cm
(1½")
TAKING PH MEASUREMENTS
Make sure that the instrument has been calibrated for pH before
taking pH measurements (see page 18).
Connect the pH electrode (combination-type) or the electrode half cells
to the appropriate connectors on the rear panel (see page 11).
If automatic temperature compensation is required, connect the
HI7669/2W temperature probe to the proper socket on the rear panel
(see page 11).
Press the ON key to turn the meter on. The meter will
automatically default to the pH measurement mode.
Immerse the electrode and the temperature probe
in the sample and shake briefly. Wait for 30
seconds before taking readings.
IN HI9218 AND HI9219
Press READY: "YES" confirms the read-
ing is stable.
The LCD on the right shows the pH reading compensated for tempera-
ture. The temperature reading is displayed on the LCD on the left.
Note: the electrode should be submerged approxi-
mately 4cm (1½") into the solution.
If the temperature probe is used, it should be
located as close to the pH electrode as possible.
If measurements are taken in different samples successively, it is
recommended that the electrode is rinsed thoroughly for better condi-
tioning and to eliminate cross-contamination of the sample.
ON
ON
READY
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE

14
32.7
TEMP
°C
For the rinsing process, it is recommended to use a liberal amount of
the next solution to be measured.
Using refillable electrodes
Unscrew the small refill cap to open the refill hole during measure-
ments. After measurements replace the refill hole cap.
This will increase the pressure and give a faster response.
FOR HI9218, HI9219, HI9318 ONLY
Press the PRINT key to get a printout at any time.
All the printouts will be complete with date, time,
sample No. (for HI9318 only), temperature and pH
(or mV with HI9318 only) value.
HI9218/HI9219 HI9318
Sample Printouts
MANUAL TEMPERATURE COMPENSATION
When the temperature probe is not connected, take the temperature of
the solution with a ChecktempC or a glass thermometer.
FOR HI9017 ONLY
To manually set a temperature value (e.g. 37.2°C)
proceed as follows:
• press 3
• press 7
• press the key displaying decimal point "."
• press 2
• press TEMP
DATE : 01-02-96
TIME : 12:21 Hr
°C : 17.9
pH : 7.18
DATE 1/02
TIME 12:21
SAMPLE 1
°C 17.9
pH 7.18
PRINT
°C

15
7 +/-3. TEMP
ºC
DOWN
ºC
UP
°C
°C
With negative temperature values (e.g. -7.3°C) use the +/- key
• press 7
• press decimal point
• press 3
• press +/-
• press TEMP
Notes:
1) For negative value inputs, always key in the value followed by
the +/- key.
2) If the +/- key is pressed twice it will toggle back to the
positive value.
The value will be displayed on the left LCD and "°C" symbol will be
flashing.
FOR HI9218 AND HI9219 ONLY
Use the UP or DOWN keys to manually adjust the display reading to
the value of the ChecktempC or the glass thermometer (e.g. 20°C).
The value will be displayed on the left LCD and "°C" symbol will be
flashing.
FOR HI9318 ONLY
Press the +/- key (for negative figures) followed by the noted
temperature on the numeric keypad (e.g. 20°C). The value will be
displayed on the small LCD. Then press the TEMP. key and the
manually set temperature will be displayed on the left LCD with the
"°C" symbol blinking.
Note: with the temperature probe connected, the "°C" symbol is
displayed continuously and it is not possible to manually set
the temperature.
20
TEMP.
ºC
SAMPLE DATE
°C

16
TAKING TEMPERATURE MEASUREMENTS
Taking a temperature measurement is very easy.
Turn the instrument ON.
Make sure the temperature probe is connected and
allow the reading to stabilize (1 or 2 minutes).
The temperature value will be displayed on the left LCD.
TAKING ORP MEASUREMENTS
(FOR HI 9017 AND HI 9318 ONLY)
HI9017 and HI9318 have the capability to take ORP measurements,
using an ORP electrode. Hanna Instruments offers a variety of ORP
electrodes for this purpose (see page 59). Contact your Dealer for more
information.
Just as pH measurements allow the acidity or the alkalinity of a
substance to be expressed in numbers, oxidation-
reduction potential (redox) measurements provide
the quantification of the oxidizing or reducing power
of any liquid.
Connect the ORP electrode to the meter and sub-
merge the tip (4 cm / 1½") into the sample to be tested.
Note: ORP measurements are taken without temperature compensa-
tion.
Press the RANGE key once to enter the mV mode.
Allow a few minutes for the reading to stabilize.
The display will indicate the absolute mV value
(positive or negative).
When values are less than ±400 mV, tenths of
mV are displayed; for values greater than ±400
mV, the decimal digit disappears.
Note that the change in scale (from 0.1 mV to 1 mV as resolution) is
automatic.
"Err2" appears if the value exceeds ±1999 mV
(out of range).
pH°C
4 cm
(1½")
RANGE
mV

17
FOR HI9318 ONLY
Press PRINT key to get a printout at any time.
All the printouts will be complete with date, time, sample No., tem-
perature and mV value.
AFTER MEASUREMENTS
Press the OFF key to switch the instrument OFF.
See page 50 for storage, cleaning and maintenance
procedures for electrodes.
DATE 1/02
TIME 12:40
SAMPLE 5
°C 20.5
mV -350.0
OFF
OFF

18
IMPORTANT
The instrument's pH range should be re-calibrated:
••
••
• When the meter is new.
••
••
• Whenever the pH electrode is replaced.
••
••
• At least once a month.
••
••
• After testing aggressive chemicals.
••
••
• After cleaning procedure and changing the reference electrolyte.
••
••
• For greatest accuracy.
INITIAL PREPARATION
Pour small quantities (about 4cm / 1½" as level) of pH7.01 (HI7007
or HI8007) and pH4.01 (HI7004 or HI8004) or pH 10.01 (HI7010
or HI8010) solution into clean beakers. If possible use plastic beakers
to minimize any EMC interferences.
If you are measuring in the acid range use pH4.01 as second buffer or
pH 10.01 if you are measuring in the alkaline range.
Note: with HI9017 and HI9318, different pH values can be selected
for calibration purposes. See page 29 and 39 respectively.
For accurate calibration, use two beakers for each buffer solution; the
first for rinsing the electrode, the second for calibration. In this way,
contamination of the buffer is minimized.
PH CALIBRATION FOR HI9017
Procedure
••
••
• Switch the instrument on after connecting the
pH electrode and the temperature probe.
PH CALIBRATIONPH CALIBRATION
PH CALIBRATIONPH CALIBRATION
PH CALIBRATION
HI 7004 HI 7007
HI 7004
HI 7007
CALIBRATION
HI 7007
RINSE
ON

19
•Immerse the pH electrode and the ATC probe
into pH7.01 buffer solution. Shake briefly and
wait 1-2 minutes for thermal equilibrium.
Note: the electrode should be submerged approximately 4 cm (1½")
into the solution. The temperature probe should be positioned
as close to the pH electrode as possible.
•Press the CAL key.
The temperature compensated value of the buffer
solution will appear on the left LCD and the pH
symbol will be blinking.
E.g. if the buffer temperature is at 25°C, the display on the right will
show "pH7.01". If the buffer temperature is at 20°C, the display will
show "pH 7.03" (see page26).
If a wrong buffer is used or the electrode is faulty, "Err4" will appear
on the left display.
•Allow 1-2 minutes for the pH reading to stabilize.
Note: If you are not using the ATC probe, refer to page 25 to manually
correct for temperature.
• Press the CON key to accept the buffer value.
"Err5" will appear on the left display and the
buffer value will be transferred to the right LCD.
The first point calibration is now complete.
Note: If a single point calibration is required, press the CAL key to
leave the calibration mode. However, it is always better to
proceed as follows for a 2-point calibration.
4 cm
(1½")
HI 7007
CAL
pHpH
pH
pHpH
CON
pH
pH

20
• Rinse the electrode and the temperature probe
before immersing them into pH 4.01 or pH10.01
calibration buffer, shake briefly and wait for
thermal equilibrium.
At this moment, "Err5" will disappear. The display will show the
temperature compensated value of the second buffer solution and
the pH symbol will be blinking.
If a wrong buffer or a faulty electrode
has been used, "Err5" remains on the
left display.
•Press the CON key to confirm the pH value.
The left display value is then transferred to
the right display. The left LCD will show the
temperature value to indicate that the meter
is now calibrated.
Note: The display on the left will indicate the temperature compen-
sated buffer value e.g. if the temperature is at 25°C, the
display will show "pH 4.01" or "pH 10.01", depending on the
solution used. If the temperature is at 20°C, the display will
show respectively "pH 4.00" or "pH 10.06" (see page 26).
Note: During calibration the pH symbol blinks on the left display, and
the right display always shows the measured value.
4 cm
(1½")
HI 7004
pHpH
pH
CON
ºC pH
°C