RPM4-AD™ OPERATION AND MAINTENANCE MANUAL
© 2005-2007 DH Instruments, a Fluke Company
Page 4
RPM4-AD A350K/A160K (fixed wing)
LO Q-RPT
(absolute, gauge)
Used for: altitude
HI Q-RPT
(absolute, gauge)
Used for: airspeed at
ground altitude only
HI Q-RPT
(differential)
Used for: airspeed at
varying altitude
Precision
2
± 0.005 % of reading or
2.4 Pa, whichever is
greater
4
± 0.005 % of reading or
5.25 Pa, whichever is
greater
4
± 0.005 % of reading or
5.25 Pa, whichever is
greater
4
Measurement
Uncertainty
3
± 0.008% of reading or
3.8 Pa, whichever is
greater
4
± 0.008% of reading or
8.4 Pa, whichever is
greater
4
± 0.008% of reading or
6.6 Pa, whichever is greater
1. Predicted Q-RPT measurement stability limit (k=2) over one year assuming regular use of AutoZero function. AutoZero is
performed by the operator: against zero pressure when vented in gauge mode, by direct comparison of one Q-RPT to the
other at the line pressure in differential mode, by comparison with a barometric reference in absolute mode. Absolute
mode predicted one year stability without AutoZ is ± (0.005 % Q-RPT span + 0.005 % of reading).
2. Combined linearity, hysteresis, repeatability. Add + 1 Pa (0.00015 psi) in gauge mode for the resolution and short term
stability of the on-board barometer.
3. Maximum deviation of the Q-RPT indication from the true value of applied pressure including precision, predicted one year
stability limit, temperature effect and calibration uncertainty, combined and expanded (k=2) following the ISO “Guide to the
Expression of Uncertainty in Measurement.” Add + 1 Pa (0.00015 psi) when measuring airspeed and using the Lo Q-RPT
to display altitude.
4. % of reading applies to 30 to 100 % of Q-RPT span. Under 30 % of Q-RPT span, the value is a constant which is the % of
reading value times 30 %.
1.2.2.2
ON-BOARD BAROMETER
The on-board barometer is used only to measure changes in atmospheric
pressure to provide dynamic compensation of the Q-RPT’s atmospheric pressure
offset when making gauge pressure measurements and when displaying altitude
while measuring airspeed.
1.2.3
BATTERY AND CHARGER PACK
Power Requirements
100 to 240 VAC, 50/60 Hz, 15 W max consumption
Operating Temperature Range
0 to 50 °C
Storage Temperature Range
- 20 to 50 °C
Vibration
Meets MIL-T-28800D
Weight
2 kg (4.4 lb)
Dimensions
8 cm H x 22.5 cm W x 20 cm D (3.1 in. x 8.9 in. x 7.9 in.)
Battery Type
Nickel Metal-Hydride
Battery Voltage
12 VDC
Battery Capacity
Typical: 9000 mAh
Min:
8200
mAh
Charge Time
Full charge from empty, 14 to 16 hours approx.
Approx. Run Time, Full Charge
8 to 12 hours
