Hanna Instruments HI 9912 - Manual (Page 2)

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TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS
Dear Customer,
Thank you for choosing a Hanna Product.
Please read this instruction manual carefully before using the instru-
ment. This manual will provide you with the necessary information for
a correct use of the instrument, as well as a more precise idea of its
versatility. If you need more technical information, do not hesitate to
e-mail us at [email protected].
These instruments are in compliance with the
directives.
PRELIMINARY EXAMINATION ........................................................ 3
GENERAL DESCRIPTION ................................................................ 3
MECHANICAL LAYOUTS................................................................. 4
FUNCTIONAL DIAGRAM ................................................................ 6
CONNECTIONS & WIRING ............................................................ 9
NORMAL OPERATION & MEASUREMENT ..................................... 12
pH CALIBRATION ....................................................................... 13
ORP CALIBRATION ..................................................................... 14
ADJUSTEMENT OF SETPOINT(S) .................................................. 15
PROPORTIONAL CONTROL.......................................................... 15
OVERDOSAGE TIMERS ................................................................ 17
pH VALUES AT VARIOUS TEMPERATURES ................................... 18
REDOX MEASUREMENT ............................................................... 19
ELECTRODE CONDITIONING & MAINTENANCE ............................... 20
SUGGESTED INSTALLATIONS FOR pH/ORP ELECTRODES ............... 21
ACCESSORIES ............................................................................. 22
WARRANTY ................................................................................ 25
OTHER PRODUCTS FROM HANNA ............................................... 26
CE DECLARATION OF CONFORMITY .............................................. 27