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2
TABLE OF CONTENTS
PRELIMINARY EXAMINATION ............................................4
GENERAL DESCRIPTION ................................................. 4
MAIN FEATURES OF DIFFERENT MODELS ......................... 5
FUNCTIONAL DESCRIPTION ............................................7
MECHANICAL DIMENSIONS ............................................9
SPECIFICATIONS .......................................................... 10
INSTALLATION .............................................................. 11
SETUP MODE .............................................................. 14
CONTROL MODE ........................................................ 21
IDLE MODE ................................................................. 29
ANALOG OUTPUT ....................................................... 30
CALIBRATION ...............................................................32
LAST CALIBRATION DATA ............................................... 40
FAULT CONDITIONS AND SELFTEST PROCEDURES ........... 41
EXTERNAL FUNCTIONS ................................................. 45
RS 485 COMMUNICATION ............................................46
STARTUP ......................................................................53
EC VALUES AT VARIOUS TEMPERATURES ..........................54
EC / TDS PROBE MAINTENANCE ................................... 55
ACCESSORIES .............................................................. 56
WARRANTY ................................................................. 58
CE DECLARATION OF CONFORMITY ............................. 59
© 2001 Hanna Instruments
All rights are reserved. Reproduction in whole or in part is prohibited without the written consent
of the copyright owner.
Dear Customer,
Thank you for choosing a Hanna Product.
This instruction manual refers to the following products:
HI 23211-
α
αα
αα
EC controller with dual setpoint, ON/OFF
control and analog output
HI 23212-
α
αα
αα
EC controller with dual setpoint, ON/OFF
control and RS 485 port
HI 23221-
α
αα
αα
EC controller with dual setpoint, ON/OFF
and PID control, and analog output
HI 23222-
α
αα
αα
EC controller with dual setpoint, ON/OFF
and PID control, and RS 485 port
HI 24211-
α
αα
αα
EC and TDS controller with dual setpoint,
ON/OFF control and analog output
HI 24212-
α
αα
αα
EC and TDS controller with dual setpoint,
ON/OFF control and RS 485 output
HI 24221-
α
αα
αα
EC and TDS controller with dual setpoint,
ON/OFF and PID control, and analog out-
put
HI 24222-
α
αα
αα
EC and TDS controller with dual setpoint,
ON/OFF and PID control, and RS 485 port
α
α
α
α
α
=
1, for models with 115 Vac power supply
2, for models with 230 Vac power supply
Please read this instruction manual carefully before using the
instrument. It will provide you with the necessary information
for the correct use of the instrument, as well as a precise idea
of its versatility.
If you need additional technical information, do not hesitate
to e-mail us at
These instruments are in compliance with the
directives.
