Standard Practice for Noise Equivalent Temperature Difference of Thermal Imaging Systems

Importancia y uso:

5.1 This practice gives an objective measure of the temperature sensitivity of a thermal imaging system (relative to a standard reference filter) exclusive of a monitor, with emphasis on the detector(s) and preamplifier.

Note 1: Test values obtained under idealized laboratory conditions may or may not correlate directly with service performance.

5.2 This practice affords a convenient means for periodically monitoring the performance of a given thermal imaging system.

5.3 NETD relates to minimum resolvable temperature difference as described in Practice E1213. Thus, an increase in NETD may be manifest as a loss of detail in imagery.

5.4 Intercomparisons based solely on NETD figures may be misleading.

Note 2: NETD depends on various factors such as spectral bandwidth and background temperature.

Subcomité:

E07.10

Referida por:

E2533-21, E3353-22

Volúmen:

03.03

Número ICS:

17.200.20 (Temperature-measuring instruments)

Palabras clave:

infrared imaging systems; noise equivalent temperature difference; nondestructive testing; thermal imaging systems; thermography;