Instrument Acronym:
TTFH, ATFH, TTWH, ATWH
Instrument Measurements:
a) Trace Gas
b) Cloud Physics/Aerosol
c) Radiation/Optical/Electrical
d) Additional Capabilities
recovery temperature
Resource Person/Developer:
Name: Dave McFarland
Affiliation: NCAR/ATD/RAF
Phone: (303) 497-1081
Email: davem@ucar.edu
Principle of Measurement:
Platinum resistance element in special, deiced housing
In situ/Remote/Flux Measurement:
In situ
Field projects in which the instrument has been used:
most
Aircraft Platform:
all
Inlet Configuration/Location:
forward fuselage or wing mounting depending on aircraft
Calibration/Cross Calibration:
NIST-traceable thermometers and electrical resistance standards
Operator Requirements:
preflight check
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: 28 Vdc (amplifier)
Other: Rosemount 10BH signal amplifier
Response Time:
< 1 s
Detection Limits:
0.006°C
Accuracy:
± 1.0°C
Precision:
Limitations (such as altitude, airspeed, etc.)