User Guide
Instruction Manual
HI 99131
Portable Waterproof
pH Meter for Plating Baths
www.hannainst.com
This Instrument is in Compliance
with the CE Directives
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 informa-
tion for the correct use of the instrument, as
well as a precise idea of its versatility in a
wide range of applications.
This instrument is in compliance with the
directives.
All Hanna Instruments meters are warranted
for two years against defects in workmanship
and materials when used for their intended pur-
pose and maintained according to instructions. 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 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 Re-
turned Goods Authorization Number from the Cus-
tomer Service department and then send it with
shipment costs prepaid. When shipping any instru-
ment, make sure it is properly packaged for com-
plete protection.
All rights are reserved. Reproduction in whole or in
part is prohibited without the written consent of the
copyright owner.
WARRANTY
PRELIMINARY EXAMINATION
Remove the instrument from the packing ma-
terial and examine it carefully to make sure
that no damage has occurred during ship-
ment. If noticeable damage is evident, 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 to-
gether with the supplied accessories.
HI 99131 is a portable, microprocessor-
based pH and temperature meter with a
special probe.
The HI 62911 pH electrode has been spe-
cially designed and fully shielded for appli-
cations in plating baths. The titanium elec-
trode body acts like a Faraday cage, and
allows stable readings even in samples
where strong electrical fields are involved.
Moreover, a built-in temperature sensor al-
lows simultaneous pH and temperature
readings and a mini amplifier renders mea-
surements impervious to noise and electri-
cal interferences.
Each meter comes with:
• HI 62911 pH/temperature probe
• 3x1.5V AA alkaline batteries
• instruction manual
• plastic carrying case
GENERAL DESCRIPTION
SPECIFICATIONS
Range -2.00 to 16.00 pH
-5.0 to 105.0°C / 23.0 to 221.0°F
Resolution 0.01 pH
0.1°C / 0.1°F
Accuracy ±0.02 pH
(@20°C/68°F) ±0.5°C up to 60°C; ±1°C outside
±1°F up to 140°F; ±2°F outside
Typical EMC ±0.02 pH
Deviation ±0.2°C or ±0.4°F
Temperature Automatic
Compensation
pH Calibration Automatic, 1 or 2 point
with 2 sets of standardized buffers
(4.01/7.01/10.01 or 4.01/6.86/9.18)
Probe
(included) HI 62911
amplified pH/temperature probe with built-in
temperature sensor and titanium cage
working as matching pin
Battery Type 3 x 1.5V AA / IEC LR6
Battery Life approx. 1500 hours
Auto-off after 8 minutes of nonuse
Environment 0 to 50°C (32 to 122°F);
RH 100%
Dimensions 150x80x38 mm (5.9x3.2x1.5”)
Weight 245 g (8.6 oz.)
To clean the meter, it is recommended to use water.
Hanna Instruments reserves the right to modify
the design, construction and appearance of its
products without advance notice.
HI 62911 Combination amplified pH elec-
trode with built-in temperature
sensor and titanium cage work-
ing as matching pin.
HI 7004L pH 4.01 buffer solution, 500 mL
HI 7006L pH 6.86 buffer solution, 500 mL
HI 7007L pH 7.01 buffer solution, 500 mL
HI 7009L pH 9.18 buffer solution, 500 mL
HI 7010L pH 10.01 buffer solution, 500 mL
HI 70300L Storage solution, 460 mL
HI 7061L Cleaning solution, 460 mL
HI 721312 Hard carrying case
HI 710007 Blue shockproof rubber boot
HI 76405 Electrode holder
ACCESSORIES
LCD DESCRIPTION
1. Automatic Temperature Compensation
indicator
2. Stability indicator
3. Battery percentage
4. pH calibration indicator
5. Low battery indicator
6. Selectable temperature unit
7. Secondary display
8. Primary display
9. Measuring unit for primary display
ISTR99131R2 06/03