Fluke RPM4-AD, Руководство по эксплуатации и обслуживанию

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3. OPERATION
Page 17 © 2005-2007 DH Instruments, a Fluke Company
AN RPM4-AD Q-RPT is identified by a range screen identifying the Q-RPT, its current unit of measure
and its full scale pressure in gauge and absolute measurement modes or in an air data unit. The
Q-RPT screen is:
1. Q-RPT designator.
2. Q-RPT position designator.
3. Current pressure unit of measure.
4. Full scale pressure in current unit of measure in gauge ( <g> ) and/or absolute
( <a> ) measurement mode.
Active A160K Hi
inHg 17.7g/47.2a
The Q-RPTs available on an RPM4-AD and short cuts to specific air data measurement
modes are accessed using
[RANGE] .
Most settings made when an RPM4-AD Q-RPT is active, such as unit of measure,
measurement mode, display resolution, and stability setting are specific to the Q-RPT.
Generally, settings selected while one Q-RPT is active apply to that Q-RPT and not to the
other Q-RPT. The Q-RPT specific settings are stored with the Q-RPT and recalled whenever
the Q-RPT is made active. See Table 5 for a listing of RPM4-AD settings and to what level of
RPM4-AD operation they are specific.
Table 5. Settings and what they are specific to
(range, measurement mode, Q-RPT, system)
SETTING PURPOSE SPECIFIC TO SECTION
[Unit] Set pressure unit of measure Q-RPT and measurement mode 3.3.2
[Mode] Set pressure measurement mode (absolute,
gauge, negative gauge) Q-RPT 3.3.3
[Display] Set bottom line display function System 3.3.6
[Head] Set fluid head correction height, fluid, unit of
measure System 3.3.7
[SDS] Open and close SDS Q-RPT 3.3.8
[AutoZ] Run AutoZ Q-RPT and measurement mode 3.3.9
Resolution Set pressure display resolution Q-RPT 3.4.2
Stability Set Ready/Not Ready stability test. Q-RPT 3.4.3
Upper Limit Set upper and lower pressure limit alarm Q-RPT and measurement mode 3.4.4
AutoZ AutoZ ON/OFF, set and view values Q-RPT and measurement mode 3.5.1
Screen Saver,
Sound, Time,
ID, Level Set system user preferences System 3.5.5
ReadRate Automated read rate adjustment ON/OFF System 3.5.7.2
Cal Q-RPT and barometer calibration coefficient
and date viewing and editing Q-RPT or barometer 3.5.7.5
3.2.2 GAUGE AND NEGATIVE GAUGE MEASUREMENT,
DYNAMIC COMPENSATION FOR ATMOSPHERIC
PRESSURE
RPM4-AD Q-RPTs are intrinsically absolute but they are also used for gauge and negative gauge
measurement modes (see Section 3.3.3,
 PRINCIPLE). Gauge measurement modes are
achieved by subtracting the value of atmospheric pressure, P
offset,G
, from the Q-RPT’s absolute
reading using AutoZ (see Section 3.2.2). The AutoZ routine that measures P
offset,G
, is run by
pressing [AutoZ] whenever RPM4-AD is in the vented condition. This assures the continuous