User Guide

• It is recommended that the HI 7635 is installed vertically. This is

to ensure that trapped air bubbles or turbulent flows cause

minimal interference to the measurement system. The maximum

working pressure of this unit is 5 BAR (72.5 psi).

CAUTION: do not use in systems where temperature exceeds 80°C

(176°F).

• The HI7638 process conductivity probe is also

supplied with a 3m (10') length cable. The

six core cable from this probe is connected to

the HI 8936 process conductivity transmitter

as shown.

The 7-pin DIN connector has to be removed when this probe is

used in conjunction with HI8936 transmitter. See page 23 for the

proper connection scheme.

FOR HI943500 ONLY

Ensure that the HI7638 con-

ductivity probe is connected to

the meter securely by aligning

the pins with the socket, push-

ing the plug in and tightening

the threaded ring.