For protection of measuring hoses and of measuring chamber please
use genuine particle filters supplied by ppm
All hoses should be made of
PTFE (Teflon)
or
FEP
in order to avoid
adsorption which may cause faulty measurement results.
Do NOT use Nylon- or Silicon - hoses by any means!
The length of the hoses (diameter of 6/4 mm) must in a normal case not
exceed
100 meters (330 ft), since pump timing and measuring cycles are
optimized
on the base of this length.
If a given situation at the plant requires different hose lengths or diame-
ter, then the necessary steps have to be coordinated with
ppm Messtechnik GmbH before installation.
Take utmost care to prevent liquids from penetrating into the meas-
uring chamber. Equally important is the avoidance of humidity
condensation in the measuring cell. Any such event will immediately
lead to the destruction of the sensor system!
4.
Interface Cable
The electrical control connection between instrument and plant-/machine
-control is provided for by a prepared cable. For details please see
figures. A3 and A4
on the subsequent pages.
To avoid harmful influence of electric radiation into the instrument, the
shield of the cable has to be connected to the machine/plant ground.
a3
