Ti20
Users Manual
Blackbody
A perfect emitter; an object that absorbs all the radiant energy incident on it at all wavelengths and reflects and transmits none. A surface with emissivity of unity (1.00).
Calibration
A methodical measurement procedure to determine all the parameters significantly affecting an instrument’s performance.
Calibration Source
A source (blackbody, hot plate, etc.) of known and traceable temperature and emissivity. Usually NIST traceable in the USA, with other recognized standards available for international customers.
Colored Body
See
D:S
Distance to spot size ratio. See Optical Resolution.
Detector
A transducer which produces a voltage or current proportional to the IR energy incident upon it. See also thermopile, pyroelectric, and Si detectors.
DIN
Deutsches Institut für Normung (DIN) is the German standard for many instrumentation products.
Display Resolution
The level of precision to which a temperature value can be displayed, usually expressed in degrees or tenths of degrees.
Drift
The change in instrument indication over a long period of time, not caused by external influences on the device (per the ASTM standard test method E
EMC
Emissivity
Emissivity is the ratio of infrared energy radiated by an object at a given temperature and spectral band to the energy emitted by a perfect radiator (blackbody) at the same temperature and spectral band. The emissivity of a perfect blackbody is unity (1.00).
EMI/RFI Noise
Far Field
A measured distance substantially greater than the focus distance of the instrument; typically greater than 10 times the focus distance.
