A SERVICE OF

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Dear Customer,
Thank you for choosing a Hanna product. Please read this instruction
manual carefully before using the meter. This manual will provide you
with the necessary information for a correct use of the instrument.
If you need additional technical information, do not hesitate to e-mail
us at tech@hannainst.com.
These instruments are in compliance with the directives.
TABLE OF CONTENTS
PRELIMINARY EXAMINATION ........................................................ 3
GENERAL DESCRIPTION ................................................................ 3
FUNCTIONAL DESCRIPTION HI8014 ..............................................4
SPECIFICATIONS HI8014 ............................................................. 5
FUNCTIONAL DESCRIPTION HI8915 ..............................................6
SPECIFICATIONS HI8915 ............................................................. 7
FUNCTIONAL DESCRIPTION HI931000 .......................................... 8
SPECIFICATIONS HI931000.......................................................... 9
OPERATIONAL GUIDE ................................................................. 10
pH CALIBRATION ....................................................................... 14
pH VALUES AT VARIOUS TEMPERATURES ................................... 18
TAKING REDOX MEASUREMENTS ................................................. 18
TEMPERATURE CALIBRATION ...................................................... 19
mV OUTPUT .............................................................................. 19
DISPLAY CODES GUIDE............................................................... 19
ELECTRODE CONDITIONING AND MAINTENANCE ........................... 20
BATTERY REPLACEMENT .............................................................. 23
ACCESSORIES ............................................................................. 24
CE DECLARATION OF CONFORMITY.............................................. 27
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. Electrodes and probes are warranted for 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.
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it
carefully to make sure that no damage has occurred during ship-
ment. If noticeable damage is found, notify your Dealer or the nearest
Hanna Customer Service Center.
Note: Save all packing material until you are sure that the
instrument functions correctly. Any defective item must be
returned in the original packing together with the supplied
accessories.
GENERAL DESCRIPTION
HI 8014, HI 8915 and HI 931000 are hand-held pH/mV meters
with interchangeable plastic-body electrodes, simple controls on the
front panel, low battery detector, large easy-to-read display, simple
calibration procedure and lightweight ABS plastic housing.
HI 8014 is an affordable portable pH/mV meter. The pH or mV
ranges are easily selected with a rotary knob, as well as the °C
range for manual temperature compensation. HI 8014 comes
supplied with: HI 1230B combination, double-junction, gel pH
electrode, one 9V battery and calibration screwdriver.
HI 8915 is a portable pH/mV/°C meter that combines accurate
pH measurements with a recorder output capability and auto-
matic temperature compensation. Two recorder output terminals
make it possible to attach a plotter or recorder directly to the
meter for a hard copy of the measurements. Pressing the HOLD
key will freeze the reading on the display. Calibration is per-
formed using the two trimmers on the front panel. HI 8915
comes supplied with: HI 1230B combination, double-junction,
gel pH electrode, HI 7669AW temperature probe, one 9V bat-
tery and calibration screwdriver.
HI 931000 is a compact, microprocessor-based pH/°C meter,
which comes supplied with: HI 1217D combination gel pH/°C
electrode with built-in temperature sensor and signal amplifier,
one 9V battery and HI 710004 soft carrying case.