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RPM4-AD™ OPERATION AND MAINTENANCE MANUAL
© 2005-2007 DH Instruments, a Fluke Company
Page 2
1.2
SPECIFICATIONS
1.2.1
GENERAL SPECIFICATIONS
Power Requirements
85 to 264 VAC, 50/60 Hz, 25 VA max consumption
and 12VDC, 1.2 A
Operating Temperature Range
15 to 35 °C
Ventilation
To prevent product overheating, provide proper ventilation. Allow 10 cm
(4 in.) clearance from rear panel cooling fan.
Storage Temperature Range
- 20 to 70 °C
Vibration
Meets MIL-T-28800D
Weight
5 kg (11 lb)
Dimensions
10 cm H x 22.7 cm W x 24 cm D (3.9 in. x 9.3 in. x 9.5 in.)
Microprocessors
Motorola 68302, 16 MHz
Communication Ports
Fuses
RS232 (COM1, COM2), IEEE-488.2
1 A, 250 VAC fuse, 5 x 20 mm, time lag type fuse
Internal power supply fuse not replaceable by operator: 2.5A, 250 VAC
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)
Operating Medium
Clean, dry, non-corrosive gas
Pressure Connections
Ps , Pt
AN-4 (37º flare) male
VENT, ATM
10-32 UNF
Self Defense System (SDS™)
Included. Isolates Q-RPTs from
Ps
and
Pt
test ports and vents Q-RPTs to
atmosphere.
Pressure Limits
A160K Q-RPT A350K Q-RPT
Maximum working pressure
160 kPa abs (23 psi) 350 kPa abs (51 psi)
Maximum pressure without
damage
200 kPa abs (29 ipsi) 370 kPa abs (54 psi)
Maximum SDS protection
10 MPa (1500 psi)
CE Mark
Available, must be specified
1.2.2
PRESSURE MEASUREMENT SPECIFICATIONS
1.2.2.1
QUARTZ REFERENCE PRESSURE TRANSDUCERS (Q-RPT)
RPM4-AD includes two quartz reference pressure transducers (Q-RPT). Both are of the
absolute (Axxx) type using an evacuated, permanently sealed reference.
Axxx Q-RPTs are used to measure absolute, gauge and negative gauge pressure.
Gauge pressure is defined by offsetting atmospheric pressure and applying dynamic
compensation for atmospheric changes using the on-board barometer (see
Section 3.2.2). Airspeed is calculated from the differential pressure between the
Hi (Pt) and Lo (Ps) Q-RPTs or from gauge pressure (differential from current
atmospheric pressure). See Section 3.3.3 for additional information on
RPM4-AD measurement modes
In RPM4-AD A160K/A160K, the two Q-RPTs are sometimes used together in
parallel measurement mode (//m
TM
) to measure altitude or airspeed at altitude
corresponding to ambient atmospheric pressure, reducing the uncertainty on the
measurement (see Section 3.2.5).
Содержание RPM4-AD
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