Installation And Start Up; Handling; Installation In Vessels/Reactors; Installation In Pipes - Mettler Toledo InPro 8000-Serie Bedienungsanleitung

InPro 8000 Series
6. The conduit around the optical fibre provides an additional "op pr"
EPL Gb type of protection of the optical fibre on a length of 1.0 m
for probe InPro 8100/*** (plastic conduit) and on a length of 52 cm
InPro 8200/*** (metallic armouring).
3.

Installation and start up

3.1

Handling

The fiber optic cables have a core of Hard Clad Silica (HCS) fibers. When
laying fiber optic cables, the bend radius must always exceed at least
10 cm (4"). Fiberoptic cables may never be shortened independently.
The transparent plastic cap on the sensor is to be removed before use.
Any formation of deposits of solid particles on the surface is to be avoided.
Gas bubbles in the process medium are also able to produce a signal and
therefore must be avoided.
3.2

Installation in vessels/reactors

The turbidity sensors are to be installed at a distance of at least 10 cm
(4") from the walls of the vessel, agitator and other internals, in order to
prevent disturbances through reflections. When employing special METTLER
TOLEDO retractable housings InTrac with modified immersion tubes, the
installation guideline valid for each individual housing is to be observed.
This step likewise, is to avoid measurement disturbances arising from
irrelevant light reflections (see chapter 7.2: "Accessories/Housings").
3.3

Installation in pipes

The turbidity sensors are to be installed such that the distance from the pipe
walls is at least 10 cm (4"). If this is not feasible in pipes of small diameter,
then the sensor can be installed sloped, at an angle of 15...45° or, alter-
natively, in a knee bend. The pipe must always be completely full of liquid.
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