RayTek ThermoView Ti30 - Manual (Page 83)

Temperature Resolution
The minimum simulated or actual change in target temperature that gives a usable change in
output and/or indication (per the ASTM standard test method E 1256-88).
Thermal Shock
A short-term error in accuracy caused by a transient ambient temperature change. The
instrument recovers from its accuracy error when it comes back into equilibrium with the
new ambient conditions.
Time Constant
The time it takes for a sensing element to respond to 63.2% of a step change at the tar-get.
Transfer Standard
A precision radiometric measurement instrument with NIST traceable calibration in the
USA (with other recognized standards available for international customers) used to calibrate
radiation reference sources.
Transmittance
The ratio of IR radiant energy transmitted through an object to the total IR energy received
by the object for any given spectral range; the sum of emittance, reflectance, and
transmittance is unity.
Warm-Up Time
Time, after turn on, until the instrument will function within specified repeatability (per the
ASTM standard test method E 1256-88).
July 1, 2003 - 83 - Version 1.0
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