DH Instruments PG7607 - 2008 Manuale utente

PG7607 PISTON GAUGE

Operation and Maintenance Manual

(Use with PG7000 Operation

and Maintenance Manual)

PG7607™ Operation and Maintenance Manual

High pressure liquids and gases are potentially hazardous. Energy stored in these liquids and gases

can be released unexpectedly and with extreme force. High pressure systems should be assembled and

operated only by personnel who have been instructed in proper safety practices.

Information in this document is subject to change without notice. No part of this document may be reproduced or

transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written

permission of DH Instruments, a Fluke Company 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA.

DH Instruments makes sincere efforts to ensure accuracy and quality of its’ published materials; however, no

warranty, expressed or implied, is provided. DH Instruments disclaims any responsibility or liability for any direct or

indirect damages resulting from the use of the information in this manual or products described in it. Mention of any

product or brand does not constitute an endorsement by DH Instruments of that product or brand. This manual was

originally composed in English and was subsequently translated into other languages. The fidelity of the translation

cannot be guaranteed. In case of conflict between the English version and other language versions, the English

version predominates.

Products described in this manual are manufactured under international patents and one or more of the following U.S.

patents: 6,701,791, 5,142,483, 5,257,640, 5,331,838, 5,445,035. Other U.S. and international patents pending.

DH Instruments, DH, DHI, PG7000, PG7607 and CalTool are trademarks, registered and otherwise, of DH

Instruments, a Fluke Company.

Swagelok is a registered trademark of the Swagelok Company

Krytox and Viton are trademarks of the Dupont de Nemours Company

Document No. 550109d

080122

Printed in the USA.

TABLE OF CONTENTS

TABLE OF CONTENTS...............................................................I

TABLES..................................................................................II

FIGURES.................................................................................II

ABOUT THIS MANUAL .............................................................III

1. INTRODUCTION .................................................................1

1.1 PRODUCT OVERVIEW ...........................................................................................................................1

1.2 SPECIFICATIONS ...................................................................................................................................2

1.2.1 GENERAL SPECIFICATIONS.......................................................................................................................2

1.2.2 PISTON-CYLINDER ASSEMBLY..................................................................................................................2

1.2.3 PRESSURE MEASUREMENTS ....................................................................................................................2

2. INSTALLATION ..................................................................3

2.1 UNPACKING AND INSPECTION ............................................................................................................3

2.1.1 REMOVING FROM PACKAGING..................................................................................................................3

2.1.1.1 PISTON-CYLINDER ASSEMBLY ..............................................................................................................3

2.1.2 INSPECTING CONTENTS.............................................................................................................................4

2.1.2.1 PG7607 PLATFORM..................................................................................................................................4

2.1.2.2 PISTON-CYLINDER ASSEMBLY ..............................................................................................................5

2.2 INITIAL SETUP........................................................................................................................................5

2.2.1 CCP PRESSURE CONNECTION..................................................................................................................5

2.2.2 INSTALLING AND REMOVING THE PISTON-CYLINDER ASSEMBLY......................................................5

3. OPERATION.......................................................................9

3.1 CONTROLLED CLEARANCE PRESSURE (CCP)..................................................................................9

3.2 [HEAD].....................................................................................................................................................9

4. MAINTENANCE, ADJUSTMENTS AND CALIBRATION............ 11

4.1 PISTON-CYLINDER ASSEMBLY AND DISASSEMBLY ......................................................................11

4.2 CLEANING PISTON-CYLINDERS.........................................................................................................12

4.3 PISTON-CYLINDER RECALIBRATION................................................................................................12

4.3.1 MASS OF THE CYLINDER..........................................................................................................................12

4.4 DISASSEMBLY OF PISTON RETAINING ASSEMBLY........................................................................12

4.4.1 DISASSEMBLY PROCEDURE....................................................................................................................13

4.4.2 REASSEMBLY PROCEDURE.....................................................................................................................14

5. TROUBLESHOOTING ........................................................ 17

5.1 OVERVIEW............................................................................................................................................17

PG7607™ OPERATION AND MAINTENANCE MANUAL

Table 1. PG7607 Parts List..........................................................................................................................4

Table 2. 50 mm Gas Piston-Cylinder Assembly Parts List..........................................................................5

Table 3. PG7607 Troubleshooting Checklist.............................................................................................17

Figure 1. Piston-Cylinder Installation...........................................................................................................8

Figure 2. Piston Retainer Assembly...........................................................................................................14

ABOUT THIS MANUAL

This manual is designed to be used in conjunction with the PG7000 Piston Gauges Operation and

Maintenance Manual, to operate a PG7607 Piston Gauge.

PG7607 is identical in conception and features to a PG7601 piston gauge. PG7607 differs only in the piston-

cylinder mounting post and the piston-cylinder module as PG7607 is designed to exploit a unique 50 mm

diameter piston-cylinder. This manual covers the aspects of PG7607 that are different from PG7601.

To operate a PG7607, use the PG7000 Piston Gauges Operation and Maintenance Manual and follow

the instructions and information applying to PG7601. Refer to this manual for details on the piston-

cylinder mounting post and piston-cylinder module.

In PG7607, the CYLINDER rather than the PISTON floats and is rotated. When using the PG7000

Manual to operate PG7607, references to the PISTON of PG7601 apply to the CYLINDER of PG7607.

Manual Conventions

(CAUTION) is used in throughout the manual to identify user warnings and cautions.

(NOTE) is used throughout the manual to identify operating and applications advice and

additional explanations.

[ ] indicates direct function keys (e.g., [RANGE]).

< > indicates PG7000 screen displays (e.g., <1yes>).

PG7607™ OPERATION AND MAINTENANCE MANUAL

1. INTRODUCTION

1.1 PRODUCT OVERVIEW

PG7607 is a special model in the PG7000 line of piston gauges. PG7607 is identical to PG7601 except

for its piston-cylinder and mounting post.

PG7607 was designed to exploit a unique 50 mm diameter piston-cylinder. With this piston-cylinder, the

piston is mounted in a fixed position in the mounting post and the cylinder floats and is rotated.

A controlled clearance pressure can be introduced into the mounting post allowing the piston diameter

and thus the gap between the piston and cylinder to be varied.

PG7607 is available on a limited basis and, generally, is only offered for use in national measurement

institutes or other laboratories performing fundamental research in pressure metrology.

This manual is intended to be used as a supplement to the PG7000 Manual. PG7607 is identical to

PG7601 except for its piston-cylinder and mounting post. To operate a PG7607, use a PG7000 Operation and

Maintenance Manual and apply the information on PG7601 referring to this manual for piston-cylinder and

mounting post information. Also keep in mind that in PG7607, the CYLINDER, rather than the PISTON, floats

and is rotated. References to the PG7601 PISTON in the PG7000 Manual apply to the CYLINDER of PG7607.

PG7607™ OPERATION AND MAINTENANCE MANUAL

1.2 SPECIFICATIONS

1.2.1 GENERAL SPECIFICATIONS

Specifications below are specific to PG7607. All other specifications are identical to PG7000

specifications found in the PG7000 Operation and Maintenance Manual (P/N 550099).

Weight

Instrument platform with no

mass loaded.

17 kg (29 lb)

Overall Pressure Ranges

with 35 kg mass set Gauge: 5 to 175 kPa (0.7 to 25.4 psi)

Absolute: 5 to 175 kPa (0.7 to 25.4 psi)

Operating Medium Clean, dry, non-corrosive gas

Maximum Mass Load 35 kg (38 kg with AMH automated mass handler)

Pressure Connections

TEST Port

Bell Jar Vent Port

Piston Controlled Clearance

Pressure (CCP)

Vacuum Reference Ports

CE Conformance

DH200

NOTE: DH200 is a gland and collar type fittings for 1/4 in.

(6 mm) coned and left hand threaded tubes equivalent to

AE SF250C, HIP LF4, etc.

KF25 on platform and bell jar (KF40 available on optional

AMH automated mass handler)

Available, must be specified.

1.2.2 PISTON-CYLINDER ASSEMBLY

The piston is mounted in a fixed position on the mounting post. The cylinder floats and

is rotated. Piston Material: Tungsten carbide

Cylinder Material: Tungsten carbide

Nominal Diameter: 50 mm

Nominal Area: 2 000 mm2

Mounting System: Free deformation with controlled clearance pressure

(CCP) available on inside of piston.

Typical Drop Rate:

Full mass load < 0.1 mm/min

1.2.3 PRESSURE MEASUREMENTS

The piston is mounted in a fixed position on the mounting post. The cylinder floats and

is rotated. Sensitivity1:0.01 Pa + 0.5 ppm

Reproducibility2:± 2 ppm

1 Sensitivity: The smallest variation in input detectable in output.

2 Reproducibility: Combined long term stability of piston-cylinder effective area and masses.

2. INSTALLATION

2.1 UNPACKING AND INSPECTION

2.1.1 REMOVING FROM PACKAGING

PG7607 is delivered (along with its standard accessories) in a reusable molded transit case

with polyurethane inserts to hold it in place.

Remove the PG7607 and its accessories from the shipping container and remove each

element from its protective plastic bag.

2.1.1.1 PISTON-CYLINDER ASSEMBLY

The piston-cylinder assembly is shipped in a molded plastic case with custom

polyethylene inserts that accommodates 2 Acetal bullet cases. The piston and

the cylinder are separate; each is packed in its own bullet case. Do not handle

either of these elements with your bare hands. Use the gloves that are in the

PG7607 accessory kit or use the lint free wipes.

Never handle the piston or cylinder with bare hands. Oil and acids from bare

skin can damage the critical surfaces (polished appearance).

PG7607™ OPERATION AND MAINTENANCE MANUAL

2.1.2 INSPECTING CONTENTS

Check that all items are present and have NO visible damage.

2.1.2.1 PG7607 PLATFORM

Table 1. PG7607 Parts List

PG7607

#401385

MOTORIZED ROTATION

NON-CE

PG7607

#401385-CE

MOTORIZED ROTATION

Platform 402360 402360-CE

Mass Bell 402135

Bell Jar W/KF16 401698

Terminal 401284

PG Terminal to Platform Cable

Non-CE (DB25M - DB25F, ≈1.8 meters) 102227

CE (DB25M - DB25F, ≈1.5 meters) 102227-CE

Cable, null modem (for flashing) 402114 402114-CE

Power Cable 100770 100770-CE

Accessory Kit 401049

(2) NIP, SS, DH200, 2.75" 100204

(2) ADPT, SS, DH200 F X 1/8 in. NPT F 100299

(2) O-ring, Viton, brown, 2-029 103994

O-ring, Viton, brown, 2-019 101930

(2) O-ring, Buna, 2-242 101976

Cover, storage, 7600 type 102132

Allen wrench, 2.5 mm 102257

Allen wrench, 3 mm 102168

Allen wrench, 5 mm 102262

Krytox™GPL205/6 0.5 oz 102496

Gift kit with gloves 400511

ADPT, DH200 M X 1/8 in. swage 400518

Valve, vacuum relief 401050

Union, SS, 4P 101984

Valve, toggle, 1/4 in. swage, OGS2 103733

ADPT, SS, 4P x 1/8 in. NPT F 103734

Screen, vent, SS, 1/8 in. NPT M 103735

ADPT, DH200 M x 1/4 in. swage 400528

Instruction Sht, PG7600 vac relief 560002

Documentation

Calibration Report (PG)

Calibration Report (Mass Bell)

Technical Data

Manuals

Documentation CD

550100

550101

550099 (PG7000)

550109 (PG7607)

102987

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