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METIS M311 / M322 / H311 / H322 (17-pin)
Mechanical Installation
14
5.2.3 Mounting of Optical Fiber
Assignment fiber to pyrometer and optics:
Each fiber is uniquely associated to a pyrometer and op-
tics. For identification, all three components are tagged with the same device number. The measure-
ment accuracy can
only be guaranteed
with proper as-
signment.
INFO:
To meet the high accuracy, the instrument should be recalibrated when replacing an
optics or the optical fiber.
NOTE:
To prevent the ingress of dirt, remove the protective caps from the pyrometer and op-
tics and fiber just before installation.
Keep the protective caps to be able to protect against dirt in any subsequent dismantling or
storage.
The optical fiber has to be mounted true sided:
The colored heat shrink tube marker matches to
the pyrometer side.
The optics fit on the side without marking
Unscrew the light guide protective tube from the
pyrometer’s housing
Pull the protective tube somewhat about the light
guide on the colored side to avoid pulling it over
the complete fiber after fiber assembly.
Remove the protective caps from the pyrometer
and optical fiber, insert the side with the turn pro-
tected fiber connector to the pyrometer, and make sure
that pin and recess snap together.
Tighten lock nut hand-tight (do not use a tool, otherwise
the screw or optical fiber can be damaged).
Finally screw the protective tube back on the pyrometer
housing.
5.2.4 Connect the Optics
Remove the protective caps from optical fiber and
optics
The fiber-optic connectors on the side of the optics
does not require special adjustment and is just
plugged and screwed
Tighten lock nut hand-tight (do not use a tool, other-
wise the screw or optical fiber can be damaged).
Color mark
Connector
pyrometer
’s side
(turn protected)
Ambient temperature on
pyrometer’s side max. 100°C
Ambient temperature on
optics side max. 250°C
Connector
optics side
Recess
Pin
Lock nut
Opt. fiber
Protective tube
Color mark