Instruction Manual
HI 99131
Portable Waterproof
pH Meter for Plating Baths
Dear Customer,
Thank you for choosing a Hanna Instruments
product.
Please read this instruction manual care-
fully before using the instrument. If you need
additional technical information, do not hesi-
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, mis-
use, 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 pur-
chase, serial number and the nature of the prob-
lem. 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 Instru-
ments, first obtain a Returned Goods Authoriza-
tion Number from the Customer Service depart-
ment and then send it with shipment costs pre-
paid. When shipping any instrument, make sure it
is properly packaged for complete 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
material and examine it carefully to make
sure that no damage has occurred during
shipment. If noticeable damage is evident,
notify your dealer.
Note: Save all packing material until you
are sure that the instrument func-
tions correctly. All defective items
must be returned in the original
packing together 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 elec-
trical interferences.
Each meter is supplied complete with:
• HI 62911 pH/temperature probe
• calibration & cleaning solution sachets
• 3x1.5V AA alkaline batteries
• instruction manual
• rugged 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 (@20°C) ±0.02 pH
±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 memorized buffers
(pH 4.01/7.01/10.01 or 4.01/6.86/9.18)
Probe (included) HI 62911
amplified pH 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 non-use
Environment 0 to 50°C (32 to 122°F);
RH max 100%
Dimensions 150x80x36 mm (5.9x3.1x1.4”)
Weight 210 g (7.4 oz.)
To clean the meter, it is recommended to use water.
HI 62911 Amplified pH electrode with
built-in temperature sensor,
DIN connector & titanium cage
working 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 solution, 500 mL
HI 70300L Storage solution, 500 mL
HI 7061L Cleaning solution, 500 mL
HI 710007 Blue shockproof rubber boot
HI 710008 Orange shockproof rubber boot
HI 721312 Rugged carrying case
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
IST99131R3 07/05
www.hannainst.com
Hanna Instruments reserves the right to
modify the design, construction and appear-
ance of its products without advance notice.
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