Honeywell BENDIX/KING KAP 140 Maintenance Manual page 62

ITEM
Pressure sensor ratio
Pitch tach
Revision 2, Dec/2002
CS:15574F02
BENDIX/KING
KAP 140
DESCRIPTION
Pressure sensor internal to the FCC. The displayed
value is a ratio of sensor output to supply reference.
Sensor range is from 0.89500 (--2500 ft) to 0.00000
(+51,800 ft).
corresponds to a decrease in pressure sensor ratio.
Sensor ratio scale factor is --0.03047 per in--Hg
where 1 in--Hg is approximately 1000 ft near sea
level. Resolution of display value is 0.0000153 per
bit. There is no validity displayed, but the sensor
must be within a range of 0.89500 (--2500 ft) to
0.07378 (+40,000 ft) to be considered valid by unit.
Tachometer output supplied from the KS270C Pitch
servo. Scale factor is flavor dependent therefore
displayed value is in volts. Each servo flavor is
scaled so that output signal is approximately 5.3V at
full speed (unloaded).
expressed in terms of percentage no load speed,
where %NL Speed = Vtach / 5.3V. Input range is ±
25V. Resolution of display value is 49mV per bit.
Validity based on internal Analog Valid.
Note an increase
Therefore signal can be
in altitude
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