These controllers allow direct connection
of a potentiometric conductivity probe
(HI7638) with a cable up to 20 m long,
without needing a transmitter to amplify
The output con+guration for connecting
a recorder or a PLC can be chosen between
0-20 or 4-20 mA.
The LED on the front panel indicates the
operating status of the controller.
The Automatic Temperature Compensation
(ATC) is performed directly by the HI7638
probe with built-in temperature sensor.
A removable, transparent splash-proof
cover protects the front panel.