Spot Size Data (Measuring Distance From The Front Of The Lens, See 2.1 Dimensions); Adjusting The Required Measuring Distance With Optical Head Ι Or Ιι, Fixed Adjusted; Adjusting The Required Measuring Distance With Optical Head Ιι, Focusable; Instrument Settings - LumaSense Technologies IMPAC IP 140-LO Betriebsanleitung

IMPAC pyrometer IP 140-LO
7.1 Spot size data (measuring distance from the front of the lens, see 1.1 Dimensions)
Optical head
Ι
Type
ΙΙ
Type
(focusable)
ΙΙ
Type
(fixed adjusted)
)
* The aperture is the effective lens diameter of the optics. It is depending on the objective length which is changing if the measuring distance
will be adjusted. The biggest aperture value belongs to the fully extended objective, the smallest aperture value if the objective is turned to its
smallest size. Intermediate values have to be interpolated (e.g. calculating the spot size if the measuring distance varies from the adjusted
value).
The spot sizes, mentioned in the table
above, will be only achieved at the meas-
uring distances of the corresponding
optics or with the focusable optics at the
adjusted distance. Decreasing or increas-
ing the measuring distance enlarges the
spot size.
Spot sizes for intermediate distances, that
are not shown on the optical profiles, may
be calculated using the adjoining formula.
Note: The InfraWin program includes a calculator („IR calculator") that roughly
estimates the unknown values.
Note: The pyrometer can measure objects at any distance, but it has to be at least as big as
the spot size of the pyrometer.
Adjusting the required measuring distance with optical head Ι or ΙΙ, fixed adjusted
7.2
A tape can be used to determine the distance between object and pyrometer. The measuring distance is
always measured from the front of the lens.
If the laser is switched on, its smallest spot is in the measuring distance of the corresponding optics or ad-
justed distance and it marks the center of the spot.
Adjusting the required measuring distance with optical head ΙΙ, focusable
7.3
For adjustment of the correct distance, untigthen the fixing
nut and vary the length of the optical head by turning the
lens tube. In the correctly focused distance the laser has
its smallest spot size (sharpest image). After adjustment
tighten the fixing nut.
8

Instrument settings

The IP 140-LO is equipped with a wide range of settings for optimal adaption to the required measuring
condition and for getting the correct measuring temperature (description of all available parameters see
section 9, Parameters).
All instrument settings can be done directly at the instrument or via serial interface and software InfraWin
(see section 10, Settings via interface and software, user of an own communication software find all inter-
face commands on section 14, Data format UPP
Meas. distance a [mm]
120
260
88 to 110
95 to 129
105 to 161
87
200
Spot size M [mm]
90
3.4
8.5
1.1 to 1.6
1.3 to 2.1
1.6 to 2.8
1.1
2.5
a
2
Aperture-Ø D
3.5
®
)
Aperture D [mm] *
7
7
17.5 to 15.5
16.5 to 14.5
15 to 13.5
17
15
a
1
a
Ø M
Ø M
2
a
= − +
2
M
M (M D) D
2 a
Lens tube Fixing nut
)
Ø M
1
a
= + −
1
( M ) D D
1
a
Inner tube
13