User Guide

2
© 2001 Hanna Instruments
All rights are reserved. Reproduction in whole or in part is prohibited without the written
consent of the copyright owner, Hanna Instruments Inc., 584 Park East Drive, Woon-
socket, Rhode Island, 02895 , USA.
Dear Customer,
Thank you for choosing a Hanna Product.
This instruction manual has been written for the following
products:
HI 700221 EC controller with dual setpoint, ON/OFF
and PID control, analog output.
HI 700222 EC controller with dual setpoint, ON/OFF
and PID control, RS485 port.
HI 710221 EC and TDS controller with dual setpoint,
ON/OFF and PID control, analog output.
HI 710222 EC and TDS controller with dual setpoint,
ON/OFF and PID control, RS485 port.
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 [e-mail].
These instruments are in compliance with the directives.