Alignment With The Laser Targeting Light; Alignment With The Through-Lens View Finder Sighting - KPM PROCESS SENSORS METIS M311 Operating Manual

METIS M311 / M322 / H311 / H322 (12-pin device connector)
▪ The distance to the measured object must be in the range of
focusable measurement distance of the optics, if a precise
measurement is to be made.
▪ If the target is smaller than the spot size diameter, a warm
background temperature effects the measurement. But this
effect is not below about 300°C.
▪ If the target is smaller than the spot size, less signal strength
arises to the pyrometer. If this falls below 2%, a measurement
is no longer possible (see
▪ Entering a fill factor that indicates how much percent of the measuring field is filled, has no influence if using
the 2-color measuring mode. In 1-color mode measurements can be performed of measuring objects that
are smaller than the spot size. Requirement is a cold background temperature, otherwise background tem-
perature will be influenced the measurement result.

5.4.1 Alignment with the Laser Targeting Light

The laser targeting light is a conical red laser beam with the
largest diameter directly at the lens and the smallest and sharp-
est in the focused distance, i.e. at the point where the measur-
ing field is the smallest (= focus distance in the
bles).
CAUTION
|
into the beam.
|SAFETY INSTRUCTIONS|
▪ Never look into the direct or reflected laser beam.
▪ Do not point the laser to anyone.
▪ If laser radiation hits the eye, avert one's eyes immediately.
Turn on / off: Via the targeting light button on the devices rear panel or via soft-
ware SensorTools (in the
The targeting light will automatically switch off after 3 minutes (if it is not switched
off manually). The switch-off time is adjustable via software (see under
vice Configuration → Laser targeting light settings).
INFO
The laser targeting light is turned off at a device temperature above
65°C (M3 devices) or 60°C (H3 devices).
If the targeting light does not turn on, probably the device's internal temperature
is too high. In this case, the place of installation of the pyrometer should be
checked (excessive heat radiated from the measuring object). If the temperature
falls below the switch-off value, the laser will work again.
INFO
to the spot size: The size of the laser point does not match to the spot size; spot sizes are given in the
Spot Size Tables.

5.4.2 Alignment with the Through-Lens View Finder Sighting

The view finder provides upright imagery so that the target under measurement
can be viewed visually. A target circle shows the measuring spot when the
target is in focus.
INFO
The size of the target circle does not match to the spot size; spot sizes
are given in the
6.2.4 Switch-off Level / Signal Strength).
|
Laser radiation, laser class 2, do not look
Connection Window
Spot Size Tables.
Pyrometer's spot size bigger than measur-
ing object, note background radiation.
Focus point
Spot Size Ta-
or control window).
Spot size smaller than measuring object
Measuring object
Spot size bigger
Laser target-
ing button
7.1.5 De-
Software
View finder
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