Operating Instructions - CPA2501
15
Air Data Test Indicator
CPA2501
4 Specifications
Accuracy specifications presented herein are obtained by comparison with primary standards traceable
to a national metrology institute or recognized international standard organization. These specifications
are obtained in accordance with the ISO Guide to the Expression of Uncertainty in Measurement (GUM).
The calibration program at Mensor is accredited by the American Association of Laboratory Accreditation
(A2LA) as complying with both the ISO/IEC 17025:2005 and the ANSI/NCSL Z540-1-1994 standards. If
there is an exception to the requirements and recommendations of Z540 during a calibration the excep-
tion is noted on the individual calibration certificate.
Mensor reserves the right to change specifications without notice.
4.1 Transducer Specification
Air Data Transducer Package Ps/Qc (CPR8001) or Ps/Pt (CPR8001)
Ps Transducer
0 ... 29.5 to 0 ... 37 (0 ... 950 to 0 ... 1253) in HgA @ 0
o
C (mbar)
Accuracy
(1)
0.009% IS-50
(2)
Pt Transducer
0 ... 40 to 0 ... 110 (0 ... 1355 to 0 ... 3725) in HgA @ 0
o
C (mbar)
Accuracy
(1)
0.01% IS-50
(2)
Qc Transducer
-1 ... 3 to -1 ... 100 (-34 ... 100 to -34 ... 3386) in HgD @ 0
o
C (mbar)
Accuracy
(1)
0.01% Full Span
Barometric reference range
17 to 34 (575 to 1151) in HgA @ 0
o
C (mbar)
Accuracy
(1)
0.01% R
Calibration Interval
365 days
Media Compatibility
Metals in contact with media
6000/7000 series Aluminum, 316 SS, brass
Non-metals in contact with media
PTFE (Teflon®), Urethane, Silicone, RTV, Silicone grease, PVC, Epoxy, Buna-N, fluoroelastomers
(Viton®)
Transducer
Reading rate
33 readings/second
Calibration adjustments
Internal zero adder and span multiplier, up to 11 point linearization for each transducer
(1)
Accuracy is defined by total measurement uncertainty with the coverage factor (k=2) and includes the intrinsic performance of the instrument (linearity, hysteresis, repeatability), the measure-
ment uncertainty of the reference instrument, long term stability, influences of ambient conditions, drift and temperature effects over the calibrated range, with periodic zero point adjustment.
(2)
The Intelliscale (IS) specification is a percent of reading specification combined with a percent of full scale specification. For example the designation “0.01% IS-50”, simply means that the
uncertainty of the transducer is 0.01% of reading above 50% of Full Scale, and 0.01% of 50% of Full Scale below 50% of the Full Scale. The 0.008% IS-33 specification is the same except the
uncertainty is 0.008% and the break over from percent of reading to percent of Full Scale is at 33% of Full Scale. Same rules apply for bidirectional ranges.
