Hanna Instruments HI 250 - Manual (Page 2)

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TABLE OF CONTENTS
WARRANTY ................................................................................................................... 2
PRELIMINARY EXAMINATION ........................................................................................... 3
GENERAL DESCRIPTION.................................................................................................... 3
FUNCTIONAL DESCRIPTION ............................................................................................. 4
HI 250 SPECIFICATIONS .................................................................................................. 5
HI 251SPECIFICATIONS ................................................................................................... 6
OPERATIONAL GUIDE ....................................................................................................... 7
pH CALIBRATION ................................................................................................................ 10
GOOD LABORATORY PRACTICE (GLP).............................................................................13
LOGGING FUNCTION.......................................................................................................15
SETUP.......................................................................................................................18
TEMPERATURE CALIBRATION (for technical personnel only)............................................ 22
mV CALIBRATION (for technical personnel only)............................................................... 23
RELATIVE mV CALIBRATION.......................................................................................... 24
PC INTERFACE ............................................................................................................... 25
pH VALUES AT DIFFERENT TEMPERATURES .................................................................... 27
ELECTRODE CONDITIONING & MAINTENANCE .............................................................. 28
TROUBLESHOOTING GUIDE .......................................................................................... 31
TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS ............................................... 32
ACCESSORIES ...................................................................................................................... 33
WARRANTY
HI 250 and HI 251 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
instruments. 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 instruments
are 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.
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.