User Guide

REAR CONNECTIONS FOR HI 943500

• Power Connection Terminals

4-screw-terminal-strip for connec-

tion to a 3-wire power cable ac-

cording to the indicated voltage

(115 or 230V).

• 7-pin DIN connector

socket

For connection to the

HI 7638 conductivity

probe.

• + mA output -

The first and the second

terminals are the output

terminals for connection to

a recorder or other control

equipment. The output cur-

rent varies from 4 to 20

mA and is proportional to

the measured conductivity

value.

• Set Select

These contacts permit the activation of the Set Contact relay when

the measured value is lower (connected terminals) or higher (open

terminals) than the user's set value. See also page 27.