2.3. Infrared Radiation Thermometer
for measuring M
ETALS
The spectral emissivity of the Infrared Radiation Thermometer KT19.01 II, KT19.02 II
is 2 to 2.7 µm and 2 to 4.5 µm. Within this spectral range, metals and metal-oxides
show a relatively high spectral emissivity. This is why the device is particularly well
suited to measure the temperatures of these materials. Since the atmospheric trans-
missivity is high within the spectral range of 2 to 2.7 µm, distortions of the measured
value owing to absorption of water vapor and CO
2
in the air can be ignored
(Chap. 7: FIGURES, Fig. 11).
The Infrared Radiation Thermometer type KT19.01 II is used for measuring tempera-
tures from 300 °C onwards, the Infrared Radiation Thermometer type KT19.02 II is
suitable for measuring temperatures from 200 °C onwards. Temperatures from
500 °C respectively 700 °C onwards are preferably measured by means of
HEITRONICS Series CT18 or KT18RD.
2.4
Infrared Radiation Thermometer
s for measuring P
LASTICS
These types of Infrared Radiation Thermometers are employed for the measuring of
surface temperatures of plastics within a temperature range of 0 to 600 °C.
These Infrared Radiation Thermometers are equipped with narrow-band infrared fil-
ters.
KT19.21 II measures radiation at 3.43 µm,
KT19.23 II measures radiation at 6.8 µm,
KT19.24 II measures radiation at 7.93 µm and
KT19.25 II measures radiation at 8.05 µm.
Within these spectral ranges, virtually all synthetic materials have strong absorption
bands so that even thin foils show high emissivity.
The Infrared Radiation Thermometer KT19.21 II is suitable for most foils from 100 °C
onwards.
The Infrared Radiation Thermometer KT19.23 II measures thin foils made from poly-
ethylene, polypropylene, polyisobutane, polynitrile, polystyrene and similar materials
from 0 °C onwards.
The Infrared Radiation Thermometer KT19.24 II and KT19.25 II measure thin foils
polyester as well as foils made from
- acrylic,
- cellulose,
- fluorine compounds,
- polycarbonate,
- polyamide,
- polyurethane,
- polyvinylchloride
and similar materials after analysis from 0 °C onwards.
2-3
95582717
GENERAL
KT19 II
05/06/18e
HEITRONICS Infrarot Messtechnik GmbH
