Instrument Abbreviation:
RSTB, RSTT, XKT, XKT19
Instrument Measurements:
a) Trace Gas
b) Cloud Physics/Aerosol
c) Radiation/Optical/Electrical
Surface, Sky temperature
d) Additional Capabilities
Resource Person/Developer:
| Name: | Krista Laursen | Bruce Morley |
|---|---|---|
| Affiliation: | NCAR/ATD/RAF | NCAR/ATD/RAF |
| Phone: | (303) 497-1031 | (303) 497-1018 |
| Email: | krista@ucar.edu | bruce@ucar.edu |
Principle of Measurement:
The Heimann KT19.85 radiation pyrometer measures amount of infrared
radiation in the atmospheric window region (9.6 - 11.5 uM). Radiation
emitted from a water, land, or cloud surface passes through a filter
which defines the spectral bandwidth. The pyrometer uses a reference
target, which is highly reflective in the infrared portion of the
spectrum, for comparison with radiation coming from the surface.
Electronic circuits process the transducer's output difference between
the reference target and the surface to measure the amount of emitted
radiation. Surface temperature is derived from the radiation
measurement.
In situ/Remote/Flux Measurement:
Remote
Field projects in which the instrument has been used:
many
Aircraft Platform:
all
Inlet Configuration/Location:
up- or down-looking fuselage port
Calibration/Cross Calibration:
EPLAB black body target
Operator Requirements:
Data Collection:
external
Post-flight Data Validation, Processing, Hours per Flight Hour etc.
RAF NIMBUS software processor
Post-project validation by RAF Project Manager
Physical Characteristics:
Dimensions:
Weight:
Power:
Other:
Response Time:
Detection Limits:
2 degree field of view
Accuracy:
± 2.0°C (@ -50°C)
± 0.5°C (@ 0°C)
Precision:
about 1°C (depending on radiative temperature of surface)
Limitations (such as altitude, airspeed, etc.)