Installation Precaution - Hach POLYMETRON 8398 User Manual

Inductive Probe 8398
6.

INSTALLATION PRECAUTION

Minimum distance between probe and conduit
When the electrical field lines are partially obstructed by a wall, the measured
conductivity is altered (increased if the wall is a conductor, decreased if it is an
insulator). With our "high performance" shielding system, 100 % of the field lines of
our probe are channelled to within less than 10 mm, thus allowing measurements to
be made without disturbance in DN65 conduits .
It is also possible to perform measurements in DN50 conduits, using our DN65 /
DN50 converging / diverging T-pieces (reference 08398=A=6000 for 8398.3 probes
and 08398=A=7000 for 8398.2 probes). These T-pieces therefore allow users to
connect to DN50 conduits, while performing their measurements in a DN65 diameter.
WARNING: In order to work optimally, the probe must be completely submerged in
the liquid. We therefore recommend the use of a U-bend tube.
11