Description - Chauvin Arnoux C.A 1864 Manual De Instrucciones

Some objects not only give out infrared energy, but also reflect it as well. Unlike
matt surfaces, brilliant or highly polished surfaces tend to reflect energy. This
possible reflection is represented by a factor known as the emissivity, and can vary
between 0.1 for a highly reflective surface, and 1 for a black body.
In the case of the C.A 1864 and C.A 1866 thermometers, the emissivity can be
adjusted from 0,1 to 1, the value of which is determined depending on the material
of the body or surface to be measured.
These thermometers are suited to measurements on varnished, anodised or
oxidised surfaces, but taking into account their spectrum, shorter wavelength
instruments are better adapted to measurements of brilliant surfaces. (see §
Emissivity table).
To have a precise measurement, keep your thermometer perpendicularly to the
target.
C.A 1864 – C.A 1866
3

9 DESCRIPTION

11
1 : LASER view finder aperture
2 : Measurement lens
3 : LCD display
4 : decrease in increments of emissivity
values, hight and low value of the alarm
5 : increase in increments of emissivity
values, hight and low value of the alarm
6 : MODE : choice of measurement parameters
through successive presses:
- EMI : emissivity percentage corresponding to
the measurement
- MAX : maximum values as of switching on
- MIN : minimum values as of switching on
- DIF : temperature difference in relation to the
reference value measured when switching on
- AVG : average of measured values
- HAL : hight value of the alarm
- LAL : low value of the alarm
7 : activation/deactivation of the LASER sight
back-lighting
8 : On/start measurement trigger
9 : Handle Grip
10 : Battery housing cover
11 : Standard mounting nut
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