Fluke RPM4-AD, Руководство по эксплуатации и обслуживанию

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1. INTRODUCTION
Page 3 © 2005-2007 DH Instruments, a Fluke Company
Table 1. Quartz Reference Pressure Transducer (Q-RPT)
module designations and ranges
MAXIMUM PRESSURE
[kPa]
MAXIMUM PRESSURE
[psi]
Q-RPT
DESIGNATION
Absolute Gauge Absolute Gauge
A350Ka
1
(Pt)
350 250 51 36
A160Ka
1
(Ps or Pt)
160 60 23 8.7
GENERAL
Pressure Ranges Lo Q-RPT Hi Q-RPT Qc (sea level)
A160K/A160K 160 kPa abs (23 psi) 160 kPa abs (23 psi) 60 kPa (8.7 psi)
A160K/A350K 160 kPa abs (23 psi) 350 kPa abs (51 psi) 250 kPa (36 psi)
Altitude Range
A160K/A160K - 4 000 to 20 000 m (- 13 000 to 66 000 ft)
A160K/A350K - 4 000 to 30 000 m (- 13 000 to 100 000 ft)
Airspeed Range (sea level)
A160K/A160K 0 to 1020 km/hr (550 kts)
A160K/A350K 0 to 2040 km/hr (1100 kts)
Resolution To 1 ppm, user adjustable
Warm Up Time 30 minute temperature stabilization recommended from cold power up for
optimum performance.
Operating Temperature
Range
15 to 35 °C
Acceleration Affect
± 0.008 % /g maximum, worst axis
Allows operation ± 20° from reference plane without significant effect
Predicted Stability
1
± 0.005% of reading
Note: the two Q-RPTs in RPM4-AD A160K/A160K can be compared one
to the other to assist in identifying Q-RPT drift between calibrations
RPM4-AD A160K/A160K (rotary wing)
HL Q-RPT
(absolute, gauge)
Used for: altitude with
best uncertainty;
airspeed at ground
altitude only
HI or LO Q-RPT
(absolute, gauge)
Used for: Not normally
used for air data
measurements
HI Q-RPT
(differential)
Used for: airspeed at
varying altitude
Precision
2
± 0.004 % of reading or
2 Pa, whichever is
greater
4
± 0.005 % of reading or
2.4 Pa, whichever is
greater
4
± 0.005 % of reading or
2.4 Pa, whichever is
greater
4
Measurement
Uncertainty
3
± 0.006% of reading or
3 Pa, whichever is
greater
4
± 0.008% of reading or
3.8 Pa, whichever is
greater
4
± 0.008% of reading or
3 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 %.