DH Instruments PPC3 - Pressure Measurement Specifications; Quartz Reference Pressure Transducer (Q-Rpt); Table 1. Reference Pressure Transducer (Q-RPT) Designations and Ranges

PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 2
1.2.2 PRESSURE MEASUREMENT SPECIFICATIONS
1.2.2.1 QUARTZ REFERENCE PRESSURE TRANSDUCER (Q-RPT)
Quartz reference pressure transducers (Q-RPTs) can be installed in PPC3 to obtain
low uncertainty pressure measurement. One or two Q-RPTs can be included in the
PPC3 and/or additional Q-RPTs can be used externally mounted in DHI RPM4
Reference Pressure Monitors (see Section 3.2.4).
The type (Axxx, Gxxx, BGxxx, BAxxx) and range of the Q-RPT module(s)
determines the PPC3 measurement specifications.
All Q-RPTs whose maximum pressure is over 200 kPa (30 psi) are of the absolute
pressure type (Axxx) using an evacuated, permanently sealed reference. Axxx Q-RPTs
can measure absolute, gauge and negative gauge pressure. Gauge pressure with
an Axxx (absolute) Q-RPT is obtained by offsetting atmospheric pressure and
applying dynamic compensation for atmospheric changes using the on-board
barometer (see Section 3.2.3). Gxxx (gauge) Q-RPTs can measure positive gauge
pressure only. BGxxx (bi-directional gauge) Q-RPTs can measure gauge and
negative gauge pressure. See Section 3.3.3, PRINCIPLE, for additional information on
absolute, gauge and negative gauge measurement modes.
PPC3s configured with two Q-RPT modules have only one TEST(+) and TEST(-) port.
PPC3 internal valves and logic handle switching between the two Q-RPTs as needed.
Q-RPTs are available with two different performance levels, STANDARD class
and PREMIUM class. See the product label on the PPC3 rear panel, the label
on the Q-RPT module on the rear panel and/or the product calibration
reports to determine the class of the Q-RPTs installed in PPC3.
Table 1. Reference Pressure Transducer (Q-RPT) Designations and Ranges
SI VERSION US VERSION
RPT
DESIGNATION
MAXIMUM
PRESSURE
Absolute
[kPa]
MAXIMUM
PRESSURE
Gauge
[kPa]
MAXIMUM
PRESSURE
Absolute
[psi]
MAXIMUM
PRESSURE
Gauge
[psi]
A10M
1
10 000 10 000 1 500 1 500
A7M
1
7 000 7 000 1 000 1 000
A3.5M
1
3 500 3 500 500 500
A2M
1
2 000 2 000 300 300
A1.4M
1
1 400 1 400 200 200
A700K
1
700 700 100 100
A350K
1
350 250 50 35
A200K
1
200 100 30 15
A160K
1
160 60 23 8
A100K
1
110 10 16 1.5
BA100K
4
110 - - 16 - -
G200K
2
- - 200 - - 30
G100K
2
- - 100 - - 15
G15K
2
- - 15 - - 2.2
BG15K
3
- - ±15 - - ±2.2
1. All AXXXX RPTs support absolute, gauge and compound (negative) gauge modes.
2. All GXXXX RPTs are positive gauge mode only.
3. BG15K is bi-directional gauge from - 15 to + 15 kPa (- 2.2 to + 2.2 psi).
4. BA100K is a barometric range whose low point is 70 kPa absolute (10 psi).