LumaSense Technologies KTG 218 - Handbuch (Seite 16)

Infrared Temperature Switch KTS 218 · KTG 218
7
Optics / measuring
distance [mm]
170 220 400 600 800 1000 1400 1600 1800 2000
Measuring field Ø
[mm] -sharp point
2.5 4 5.5 7 10.5 14 18 21 24.5 28
Spot sizes for intermediate distances, that are not shown on the optical profiles, may be calculated using the
following formula:
8 Alignment of the instrument
For exact measurement of the object temperature the switch must be aligned correctly onto the object. The
instruments are not equipped with a sighting so that the aligning must be done thermally. When measuring a
hot object in front of a cooler background, it usually suffices to align the switch to achieve the highest tem-
perature response.
The LED targeting light shows its smallest spot in the measuring distance of the corresponding optics. It
marks the center and the size of the spot.
9 Instrument settings
The potentiometer at the rear side of the device helps to adjust the switching marks. The switching state is
shown via LED.
The LED at the rear sight of the device lights by reaching or exceeding the pre-adjusted temperature switch
marks “HIGH”
With help of a suitable screw driver
the switch level of the KTS / KTG 218
can be adjusted.
1. If an exact switch temperature is necessary a comparison measurement I recommended (e.g. with a
pyrometer or a contact temperature sensor). To set the switch point turn the potentiometer with a suitable
screw driver until the switch switches.
2. If an exact temperature value is not necessary just align the instrument to the (hot) measuring object and
turn the potentiometer until it switches.
3. The new switching point for your application is now established and the temperature switch is ready for
use.
Aperture-Ø D
Ø M
Ø M
1 Ø M
2
a
a
2
a
1
17 D ) D M (
a
a
M 1
1
− + = D D) (M
a
a
M 2
2
+ − =
Cable/
connector
LED
Potentiometer