56-101-01178 Revision K
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Pressure Units
Ps
Channel
Ps
Rate of
Change
ROC
Qc
Channel
(Note: Pt = Qc + Ps)
RtQc
Rate of
Qc
EPR
Units
inHg
(abs)
inHg/min
inHg
(diff)
inHg/min
Ratio: Pt7 /
Pt2
Operating
Range
2.693 to
38.0
0.1 to 16
0.0 to 40
(*3)
0.5 to 10
0.1 to 10
Measurement
up to 2.693
0.1 to 16
0.0 to 40
(*3)
0.5 to 10
0.1 to 10
Accuracy
0.02% FS
(*1)
± 0.0076
inHg
± 2 % of
value
± 0.020 inHg
± 2 % of
value
0.01
Repeatability
± 0.002 inHg
-
0.001 rising to 0.005
-
-
Resolution
0.0001
-
0.0001
-
1.000
Stability
(12 month)
(*2)
0.025% FS
-
0.025 % FS
-
-
Table 5
Pressure Units Specifications
Note
(*1):
Regarding Ps Channel: Specification based on typical accuracy (0.02% FS).
Maximum error is 0.04% FS.
Regarding Qc Channel: Specification based on typical accuracy (0.05% FS).
Maximum error is 0.10% FS.
Note
(*2):
This tolerance represents the stability over a 12-month period. If tighter
tolerances are required, the calibration interval should be reduced or establish
proof of accuracy/stability.
Note
(*3):
Pt max = Ps max + Qc max = 38.0 + 40.0 = 78 inHg
Note
:
Accuracy specifications are based on performing the 12-month Recertification
cycle and when connected to a leak tight system.
Note:
Specifications are subject to change without notice.
E. Display Units
CAS
kts, km/h, mph
ALT
ft , m
MACH
n/a (dimensionless ratio)
ROC
ft/min, m/min
Pt, Ps, Qc
inHg, mbar, psia, psid, kPa, mmHg, inH
2
O@4°C, inH
2
O@20°C,
inH
2
O@60°F
EPR
inHg, mbar, psi, mmHg, kPa, hPa, inH2O@20°C, inH2O@4°C,
inH2O@60°F
Table 6
Display Units