Hanna Instruments HI98190 User manual

INSTRUCTION MANUAL
HI98190, HI98191
Calibration Check
Waterproof
pH/mV/ISE/Temperature Meters

Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using the instrument.
This manual will provide you with the necessary information for correct use
of the instrument, as well as a precise idea of its versatility.
If you need additional technical information, do not hesitate to e‑mail
us at [email protected] or view our worldwide contact list at
www.hannainst.com.
All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of
the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
Dear Customer,

3
PRELIMINARY EXAMINATION ..............................................................................................
GENERAL DESCRIPTION ......................................................................................................
FUNCTIONAL DESCRIPTION ................................................................................................
HI98190 SPECIFICATIONS .................................................................................................
HI98191 SPECIFICATIONS .................................................................................................
OPERATIONAL GUIDE .........................................................................................................
pH CALIBRATION ...............................................................................................................
pH BUFFER TEMPERATURE DEPENDENCE ............................................................................
RELATIVE MV CALIBRATION ................................................................................................
ISE CALIBRATION HI98191 ................................................................................................
GOOD LABORATORY PRACTICE (GLP) ...................................................................................
SETUP ..............................................................................................................................
LOGGING ..........................................................................................................................
AUTOEND .........................................................................................................................
mV AND TEMPERATURE CALIBRATION (FOR TECHNICAL PERSONNEL ONLY) ...........................
PC INTERFACE ...................................................................................................................
BATTERIES REPLACEMENT ..................................................................................................
TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS ......................................................
ELECTRODE CONDITIONING AND MAINTENANCE .................................................................
TROUBLESHOOTING GUIDE ...............................................................................................
TABLE OF CONTENTS
4
5
8
10
23
25
31
45
49
55
58
6
9
14
24
29
44
46
54
56

4
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:
• HI12963 Amplified Combined pH temperature electrode (HI98190)
• HI72911B Combined pH temperature electrode (HI98191)
•HI7662 Temperature Probe (HI98191)
• pH 4.01 & 7.01 Buffer Solutions (230 mL each)
• HI700601 General Purpose Cleaning Solution (3 pcs.)
• 100 mL Plastic Beaker (2 pcs.)
• 1.5V AA Batteries (4 pcs.)
• HI92000 PC Software
• HI920015 Micro USB cable
• Instruction Manual and Quick Reference Guide
• Certificate
PRELIMINARY EXAMINATION
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.

5
GENERAL DESCRIPTION
The HI98190 and HI98191 instruments are state‑of‑the‑art, heavy‑duty pH meters, designed to
provide laboratory results and accuracy under harsh industrial conditions.
They are provided with a series of new diagnostic features which add an entirely new dimension
to the measurement of pH, by allowing the user to dramatically improve the reliability of the
measurement:
• seven standard buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45) for calibration.
• pH calibration up to five calibration points (see instrument specifications).
• Custom calibration with up to five custom buffers.
• Messages on the graphic LCD for an easy and accurate calibration.
• Cal Check™ Diagnostic features to alert the user when the electrode needs cleaning.
• Optional user enabled “Outside Calibration Range” warning.
• Monitoring of the electrode aging.
• User selectable “Calibration Time Out” to remind when a new calibration is necessary.
Moreover, they offer an extended temperature range from ‑20 to 120 °C (‑4 to 248 °F), using a
temperature sensor inside pH electrode.
These instruments can also measure with ORP electrodes, thanks to their capability to measure mV
with a resolution up to 0.1 mV.
HI98191 can also measure with ISE electrodes. The electrode type unit selection capability and the
ISE calibration in up to five calibration standard solutions make this instrument very useful for a
large range of concentration solutions measurements.
Other features include:
• Relative mV measurements
• Log on demand up to 300 samples for HI98191 and 200 samples for HI98190
(100 samples on each range ‑ pH, mV, ISE only HI98191)
• Auto Hold feature, to freeze first stable reading on the LCD
• GLP feature, to view last calibration data for pH, Rel mV, or ISE
• PC interface

6
1) Liquid Crystal Display (LCD).
2) Functional keys.
3) /keys to manually increase/decrease the parameters or to scroll between the parameter
list.
4) ON/OFF ( )key, to turn the instrument ON and OFF.
5) LIGHT ( ) key to toggle display backlighting.
6) GLP key, to display Good Laboratory Practice information.
7) CAL key, to enter/exit calibration mode.
8) SETUP key, to enter/exit SETUP mode.
9) RCL key, to enter/exit view logged data mode.
10) MODE key to change pH resolution or to toggle between mV and Rel mV mode.
11) RANGE key, to switch between pH and mV range (HI98190) or pH, mV and ISE range
(HI98191).
12) HELP key to enter/exit contextual help.
13) ESC to leave current mode, exit calibration, setup, help. etc.
FRONT VIEW
FUNCTIONAL DESCRIPTION

7
14) Electrode DIN connector.
15) USB connector.
TOP VIEW HI98190
FUNCTIONAL DESCRIPTION
TOP VIEW HI98191
14) BNC electrode connector.
15) Input for Reference electrode.
16) Input for Temperature probe.
17) USB Connector.

8
HI98190 SPECIFICATIONS
pH
Range ‑2.0 to 20.0 pH / ‑2.00 to 20.00 pH / ‑2.000 to 20.000 pH
Resolution 0.1 pH / 0.01 pH / 0.001 pH
Accuracy ±0.1 pH / ±0.01 pH / ±0.002 pH
mV
Range ±2000 mV
Resolution 0.1 mV
Accuracy ±0.2 mV
Temperature
Range ‑20.0 to 120.0 °C (‑4.0 to 248.0 °F)
Resolution 0.1 °C (0.1 °F)
Accuracy ±0.4 °C (±0.8 °F) (excluding probe error)
Rel mV Offset Calibration ±2000 mV
pH Calibration
Up to five point calibration, seven standard buffers available
(pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45), and five custom
buffers
Slope Calibration From 80 to 110%
Temperature Compensation Manual or Automatic from ‑20.0 to 120.0 °C (‑4.0 to 248.0 °F)
pH Electrode HI12963 pH & temperature
LOG On demand, 200 samples (100 samples on each range)
Input Impedance 10¹² Ω
Battery Type/Life 1.5V AA batteries (4 pcs.) / approx. 200 hours of continuous use
without backlight (50 hours with backlight)
Auto Power Off User selectable: 5, 10, 30, 60 minutes or disabled
PC Interface opto‑isolated USB
Dimensions 185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”)
Weight 400 g (14.2 oz)
Environment 0 to 50 °C (32 to 122 °F) max. RH 100% IP67

9
HI98191 SPECIFICATIONS
pH
Range ‑2.0 to 20.0 pH / ‑2.00 to 20.00 pH / ‑2.000 to 20.000 pH
Resolution 0.1 pH / 0.01 pH / 0.001 pH
Accuracy ±0.1 pH / ±0.01 pH / ±0.002 pH
mV
Range ±2000 mV
Resolution 0.1 mV
Accuracy ±0.2 mV
ISE
Range From 1.00 E‑7 to 9.99 E10 concentration
Resolution 3 digits 0.01, 0.1, 1, 10 concentration
Accuracy ±0.5% of reading (monovalent ions)
±1% of reading (divalent ions)
Temperature ‑20.0 to 120.0 °C (‑4.0 to 248.0 °F)
Rel mV Offset Range ±2000 mV
pH Calibration
Up to five point calibration, seven standard buffers available
(pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45), and five custom
buffers
Slope Calibration From 80 to 110%
ISE Calibration
Up to five point calibration points six standard solutions
available
(0.1, 1, 10, 100, 1000, 10000 ppm)
Temperature Compensation Manual or Automatic from ‑20.0 to 120.0 °C (‑4.0 to 248.0 °F)
pH Electrode HI72911B pH & temperature (included)
LOG On demand, 300 samples (log samples on each range)
Input Impedance 10¹² Ω
Battery Type/Life 1.5V AA batteries (4 pcs.) / approx. 200 hours of continuous use
without backlight (50 hours with backlight)
Auto Power Off User selectable: 5, 10, 30, 60 minutes or disabled
PC Interface opto‑isolated USB
Dimensions 185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”)
Weight 400 g (14.2 oz)
Environment 0 to 50 °C (32 to 122 °F) max. RH 100% IP67

10
OPERATIONAL GUIDE
INITIAL PREPARATION
The instrument is supplied complete with 1.5V AA (4 pcs.) batteries. For placing the batteries inside
the meter, see page 54.
To prepare the instrument for field measurements close the serial communication socket and all
unused connector sockets with proper stopper (to ensure waterproof protection). Use the holed
temperature rubber cork for the temperature socket when temperature probe is connected.
For HI98191 connect the pH electrode and the temperature probe to the BNC and temperature
sockets on the top of the instrument. Push the pH electrode sleeve to cover the connector
accommodation.
The temperature probe is used in conjunction with the pH electrode to utilize the instrument's ATC
capability, but it can also be used independently to take temperature measurements. If the probe is
disconnected, temperature can be set manually with the / keys.
For HI98190 connect the pH/temperature electrode to the DIN connector.
Turn the instrument ON by pressing ON/OFF key.
At start‑up the display will show the Hanna logo for a few seconds followed by the percentage
indication of the remaining battery life, then enters the measurement mode.
After measurement switch the instrument off, clean the electrode and store it with a few drops of
HI70300 storage solution in the protective cap (see page 57).
The Auto Power Off feature turns the instrument off after a set period (default 30 min) with no button
pressed to save battery life. To set another period or to disable this feature, see SETUP menu on
page 31.
The Auto Light Off backlight feature turns the backlight off after a set period (default 1 min) with
no buttons pressed. To set another period or to disable this feature, see SETUP menu on page 31.
pH MEASUREMENTS
To take a pH measurement remove the electrode protective cap and simply submerge the tip of the
electrode (4 cm/1½") into the sample to be tested.
Press RANGE key until the display changes to the pH range, if necessary.
Use MODE key to select the pH resolution.
Allow for the electrode to adjust and reading to stabilize (hourglass symbol turns off).