• PG9602 Piston Gauge

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  • Automated primary pressure reference for absolute and gauge pressures to 10 MPa

    The PG9602 is the next generation of absolute pressure piston gauge from Fluke Calibration. It includes multiple piston cylinder range options to support absolute or gauge pressure measurements from 12 kPa to 10 MPa.

    PG9602 uses Fluke Calibration’s unique integrated piston-cylinder assemblies to measure pressures up to 10 MPa. These piston-cylinder modules have been used for years with PG7000 piston gauges and are now selected and tested for low uncertainty operation with up to 100 kg of mass with PG9602. The PG9000 platform design and high mass load produce a wide range and high performance piston gauge that is the ideal instrument to disseminate primary PG9607 measurements to higher pressure ranges with the lowest possible uncertainty. The new platform architecture promotes improved temperature stability around the piston-cylinder.

    PG9602 features AMH automated mass handling technology to allow fully automated testing in both gauge and absolute mode. Manual steps are removed from its operation, saving time and delivering metrological advantages. When AMH is coupled with automatic pressure control and computer software, repeated and extended tests become practical, making PG9602 a powerful calibration and research tool.

    PG9602 is the result of Fluke Calibration's extensive work with national metrology institutes (NMIs) to minimize pressure measurement uncertainty and years of supplying PG7000 piston gauges to NMIs and other top pressure metrology labs worldwide.

Số lượng

Innovations to minimize uncertainty

Two decades ago, DH Instruments PG7000 family of piston gauges introduced the advantages of on-board sensing and monitoring technology, as well as other performance and ergonomic enhancements. The PG9000 platform adds several innovations to improve pressure measurements even further.

The platform consists of a piston gauge base, terminal and new remote electronics module. The terminal is the user interface. It stores metrological component data, reports operating and ambient condition status and calculates pressure.

The PG9000 piston gauge base supports automatic piston-cylinder rotation and mass handling, but all of the electronics to support the sensors and rotation control have been relocated to a remote electronics module. This architecture supports the best possible temperature stability at the base, even with prolonged vacuum operation, since any significant sources of heat are located away from the base.

The PG9602 mounting post has two integrated PRTs for reduced piston-cylinder temperature uncertainty. The PRTs are easily removed for calibration. A capacitance diaphragm gauge is included in the optional vacuum reference hardware for making residual vacuum measurements in absolute mode. PG9602 can also integrate the measurement output from virtually any user-supplied vacuum sensor.

Metrology supported by automation

AMH automated mass handling technology is expanded on PG9602 to provide gauge and absolute operation with up to a 100 kg mass load. Eliminating manual mass loading minimizes mechanical wear, improving mass stability. The automated mass handler operates inside the evacuated bell jar, so the time to release and draw a vacuum while changing masses between test points is eliminated. The sustained vacuum produces lower and more static residual vacuum values. Total test time and productivity are greatly improved, especially on absolute pressure tests. More importantly, full automation promotes highly consistent measurements and allows extensive tests with many test points that would be impractical to perform manually. And with the help of calibration management software like COMPASS® for Pressure, tests can be run fully unattended.

General specifications

Electrical power 85/264 V ac, 50/60 Hz, 22 VA maximum consumption
Temperature Operating: 15 °C to 35 °C (59 °F to 95 °F)
Storage: –20 °C to 70 °C (–4 °F to 158 °F)
Humidity Operating: 5 % to 95 % RH, non-condensing
Weight Instrument platform with no mass or piston-cylinder loaded
PG9602 (without vacuum hardware): 34 kg (74 lb)
Remote electronics module: 1.9 kg (4 lb) PG terminal: 1.4 kg (3 lb)
Optional vacuum reference hardware: 16 kg (36 lb)
Dimensions (H x W x D) PG9602 base (without vacuum hardware):
34.1 cm x 54.3 cm x 52.3 cm (13.4 in x 21.4 in x 20.6 in)
(Height: top of piston-cylinder assembly)


PG9602 base (with optional vacuum bell jar and vacuum gauge connected):
56 cm x 54.3 cm x 52.3 cm (22 in x 21.4 in x 20.6 in)
(Height: Top of bell jar)

Remote electronics module: 10.2 cm x 35.1 cm x 19.6 cm (4 in x 13.8 in x 7.7 in)

PG terminal: 12 cm x 15 cm x 20 cm (4.7 in x 5.9 in x 7.9 in)

Microprocessors Instrument platform: Motorola 68302
PG terminal: Hitachi 64180
Communication ports RS-232
COM 1: Host computer
COM2: Residual vacuum sensor (external)
COM3: Automated pressure controller COM4: Unused/spare
IEEE-488 Host computer 
Overall pressure range Gauge: 13 kPa to 10 MPa (1.9 to 1450 psi)1
Operating media Gas: nitrogen, helium, dry air (dewpoint ≤ -40 ºC)
Maximum mass load 100 kg1
Pressure connections PG 9602 base
Test port: DH200*
Controlled clearance pressure: DH200*
* Gland and collar fitting for 6.35 mm (0.25 in) coned and left hand threaded tubes. Equivalent to AE SF250C, HIP LF4, etc.


AMH drive
Quick connector equivalent to Swagelok QM Series (QM2-B-200). Use with DESO (double end shut off) type stem.

AMH vent
Quick connector equivalent to Swagelok QM Series (QM2-B-200). Use with SESO (single end shut off) type stem only.

Remote electronics module
ATM port: 10-32 UNF

Vacuum bell jar 3x 40 mm ISO/KF flange, 1x 50 mm ISO/KF flange (top)

CE conformance
All PG9000 models conform to CE requirements


1 MS-AMH-100 mass set contains approximately 104.5 kg of mass. Combined with the piston or cylinder and bell assembly, total mass loads may be up to 106 kg, resulting in pressures of up to 530 kPa (5.3 bar, 76.9 psi).

AMH-100-VAC Automated Mass Handler (optional)

Power requirements 15 V dc @ 2 A, 30 W max. consumption
Temperature Operating: 15 ºC to 35 ºC (59 °F to 95 °F)
Dimensions (H x W x D) 41 cm x 41 cm x 36 cm (16.3 in x 16.1 in x 14.1 in)
Weight 12 kg (25 lbs)
Power/communications Custom 8-pin connector
AMH drive air supply 550 kPa (80 psi), ± 10 %, minimal flow
AMH vacuum supply At least 50 kPa (7.5 pi) under atmosphere, minimal flow
Pressure connections Pressure: Quick connector DESO (double end shut off) type stem
Vacuum: Quick connector SESO (single end shut off) type stem

Piston-cylinder assembly

PC-9602-10 PC-9602-20 PC-9602-50 PC-9602-100
Compatible platform PG9602 PG9602 PG9602 PG9602
Pressure to mass ratio 10 kPa/kg 20 kPa/kg 50 kPa/kg 100 kPa/kg
Minimum pressure
(using mass bell)
13 kPa
(1.9 psi)
20 kPa
(2.9 psi)
50 kPa
(7.3 psi)
100 kPa
(14.5 psi)
Maximum pressure
(100 kg mass)
1,000 kPa
(145 psi)
2,000 kPa
(290 psi)
5,000 kPa
(725 psi)
10,000 kPa
(1450 psi)
Piston material Tungsten carbide Tungsten carbide Tungsten carbide Tungsten carbide
Cylinder material Tungsten carbide Tungsten carbide Tungsten carbide Tungsten carbide
Nominal diameter (mm) 35 25 16 11
Nominal area (mm2) 1,000 500 200 100
Mounting system Simple Free
Simple Free
Simple Free
Simple Free
Typ. N2 drop rate
with full mass load
0.3 0.5 0.7 1.2
Sensitivity1 0.02 Pa + 0.5 ppm 0.04 Pa + 0.5 ppm 0.1 Pa + 0.5 ppm 0.2 Pa + 0.5 ppm
Reproducibility2 (ppm) 2 2 2 3


1 Sensitivity: The smallest variation in input detectable in output
2 Reproducibility: The root sum square of the stability of effective area and stability of the AMH-100 mass set for 1 year

Mass sets

All masses are delivered in molded, reusable, transit cases with custom inserts.
Masses Material: 304L non-magnetic stainless steel


Finish: Electropolished

Adjustment tolerance: ± 20 ppm of nominal value
(manual mass sets, AMH automated mass handler mass sets do not have fixed adjustment tolerances)

Uncertainty of measured values: ± 5 ppm or 1 mg, whichever is greater

Uncertainty of measured values: ± 1 mg


Pressure measurements

For uncertainty in piston-cylinder effective area and typical measurement uncertainty in pressure defined by the piston gauge, see the piston-cylinder calibration report and current revision of Technical Note 0180TN12 Typical Pressure Measurement Uncertainty Defined by a PG9607 or PG9602 Piston Gauge.
Sensitivity1 0.005 Pa + 0.5 ppm
Reproducibility2 ± 2 ppm + 0.05 Pa

1 Sensitivity: The smallest variation in input detectable in output.
2 Reproducibility: The root sum square of the stability of effective area and stability of the AMH-100 mass set for 1 year.

Ambient and instrument condition measurements

Temperature (Ambient) Range: 0 °C to 40 °C (32 °F to 104 °F)
Resolution: 0.1 °C (32.18 °F)
Measurement uncertainty: ± 1 °C (33.8 °F)
Temperature (Piston-cylinder module) Range: 0 °C to 40 °C (32 °F to 104 °F)
Resolution: 0.01 °C (32.02)
Measurement uncertainty: ± 0.1 °C (32.18 °F)
Barometric pressure with internal sensor Range: 70 kPa to 110 kPa
Resolution: 10 Pa Measurement uncertainty: ± 140 Pa


Barometric pressure can also be read automatically with any RS-232 device such as a Fluke Calibration RPM.

Relative humidity Range: 5 % to 95 % RH
Resolution: 1 % RH
Measurement uncertainty: ± 10 % RH
Piston position Range: ± 4.5 mm
Resolution: 0.1 mm
Piston rotation (Rate and deceleration) Range: 2 rpm to 99 rpm Resolution: 1 rpm
Vacuum (optional) Range: 0 Pa to 13 Pa
Resolution: 0.01 Pa
Measurement uncertainty: ± 0.05 Pa + 0.5 % of reading


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