Hanna Instruments HI 120 - Manual (Page 2)

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Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using the instruments.
This manual will provide you with the necessary information for correct use
of the instruments, as well as a precise idea of their versatility.
If you need additional technical information, do not hesitate to e-mail us at
[email protected] or turn to the back cover for our worldwide contact list.
These instruments are in compliance with
directives.
W A R R A N T Y
HI 120 and HI 122 are guaranteed for two years against defects in
workmanship and materials when used for their intended purpose and
maintained according to instructions. Electrodes and probes are guaranteed
for six months. This warranty is limited to repair or replacement free of
charge.
Damage due to accidents, misuse, tampering or lack of prescribed
maintenance is 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 Returned Goods
Authorization number from the Technical Service department and then send
it with shipping costs prepaid. When shipping any instrument, make sure it
is properly packed for complete protection.
TABLE OF CONTENTS
WARRANTY ..................................................................................................... 2
PRELIMINARY EXAMINATION .............................................................................. 3
GENERAL DESCRIPTION .................................................................................... 3
FUNCTIONAL DESCRIPTION HI 120 .................................................................... 4
FUNCTIONAL DESCRIPTION HI 122 .................................................................... 5
HI 120 AND HI 122 SPECIFICATIONS ........................................................... 10
OPERATIONAL GUIDE ...................................................................................... 11
pH CALIBRATION ............................................................................................ 15
ENHANCED CALIBRATION MESSAGES ................................................................ 20
ELECTRODE CONDITION & ELECTRODE RESPONSE TIME ...................................... 21
RELATIVE mV CALIBRATION ............................................................................ 22
GOOD LABORATORY PRACTICE (GLP) ................................................................ 23
SETUP .......................................................................................................... 27
LOGGING ...................................................................................................... 31
AutoHOLD ..................................................................................................... 35
PRINTING (HI 122 only) ................................................................................ 36
TEMPERATURE CALIBRATION (for technical personnel only) .................................. 40
mV CALIBRATION (for technical personnel only) .................................................. 41
PC INTERFACE ............................................................................................... 42
pH BUFFER TEMPERATURE DEPENDENCE ......................................................... 44
ELECTRODE CONDITIONING & MAINTENANCE ..................................................... 45
PRINTER MAINTENANCE (HI 122 only) ............................................................ 48
TROUBLESHOOTING GUIDE ............................................................................. 49
TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS ..................................... 51
ACCESSORIES ................................................................................................ 52