
56-101-01175 Revision P Page | 11
Note
(*1)
:
ROC (with 125 cu in volume) default is 3,000 ft/min in Aeronautical mode.
Note
(*2)
:
RtCAS (with 75 cu in volume) default is 300 kts/min in Aeronautical mode.
Note
(*3)
:
Ps Channel: Specification based on (0.008% FS) accuracy based on the
calibrated range of 2.6931 to 38 inHg. Sensor manufacturer specification.
Note
(*4)
:
Pt Channel: Specification based on typical accuracy (0.06% FS). As a result of
the Qc Auto Zero, the Pt Channel accuracy is 0.005% FS rising to 0.06% FS at
650 kts. Refer to Note
(*6)
below for more details.
Note
(*5)
:
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 stability.
Note
(*6)
:
Specification are based on empirical results obtained from evaluation of units
received back for annual recertification. However, if your application requires this
level of accuracy, historic proof of stability should be maintained for proof of
accuracy.
Note
(*7)
:
This tolerance represents the DPS1000 internal leak rate with no hoses attached to
the Static (Ps) or Pitot (Pt). If configured with AN4 ports, the AN4 ports are capped.
PRESSURE UNITS NON-
MOD “B”
Ps Channel
Ps
ROC
(Rate of
Change)
Qc Channel
(Note: Pt = Qc + Ps)
RtQc
(Rate of Qc)
EPR
(Engine
Pressure Ratio)
Units
inHg (abs)
inHg/min
inHg (diff)
inHg/min
Ratio: Pt7/Pt2
Operating Range
2.6931 to
38.0000
0.1 to 16
0.0 to 40
(*3)
0.5 to 10
0.1 to 10
Calibrated Range
2.6931 to
32.1480
0.1 to 16
0.0 to 40
(*3)
0.5 to 10
0.1 to 10
Accuracy
0.01% FS
(*1)
± 0.003 inHg
± 2% of value ± 0.010 inHg
(*2)
± 2% of value
0.01
Repeatability
± 0.001 inHg
-
0.001 rising to 0.005
-
-
Resolution
0.0001
-
0.0001
-
0.001
Stability
(12 months)
(*3)
0.01% FS
-
0.025% FS
-
-
Table 7
Non-MOD
“B”
Pressure Units Specifications
Note
(*1)
:
Ps Channel: Specification based on (0.008% FS) accuracy based on the calibrated
range of 2.6931 to 32.1480 inHg, and 0.1% FS from 32.1480 to 38 inHg.
Note
(*2)
:
Pt Channel: Specification based on typical accuracy (0.06% FS). As a result of the
Qc Auto Zero, the Pt Channel accuracy is 0.005% FS rising to 0.06% FS at 650 kts.
Above 650 kts = 25.6 inHg to 40 inHg, accuracy tolerance can rise to 0.10% FS.
Refer to Note
(*4)
below for more details.
Note
(*3)
:
Pt max = Ps max + Qc max = 38.0 + 40.0 = 78 inHg.