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Related Manuals for DH Instruments PG7607 - 2006
Summary of Contents for DH Instruments PG7607 - 2006
- Page 1 PG7607 PISTON GAUGE Operation and Maintenance Manual (Use with PG7000 Operation and Maintenance Manual) © 2006 DH Instruments, Inc.
- Page 2 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. ©...
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Page 3: Table Of Contents
PG7607™ Operation and Maintenance Manual TABLE OF CONTENTS ................I TABLES ....................II FIGURES ....................II ABOUT THIS MANUAL ................III 1. INTRODUCTION ..................1 PRODUCT OVERVIEW ..........................1 SPECIFICATIONS .............................2 1.2.1 GENERAL SPECIFICATIONS ...........................2 1.2.2 PISTON-CYLINDER ASSEMBLY ........................2 1.2.3 PRESSURE MEASUREMENTS ........................3 2. -
Page 4: Tables
PG7607™ Operation and Maintenance Manual Table 1. PG7607 Parts List ......................... 6 Table 2. 50 mm Gas Piston-Cylinder Assembly Parts List................7 Table 3. PG7607 Troubleshooting Checklist..................... 19 Figure 1. Piston-Cylinder Installation ......................10 Figure 2. Piston Retainer Assembly......................16 Page ii ©... -
Page 5: About This Manual
PG7607™ Operation and Maintenance 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. - Page 6 PG7607™ Operation and Maintenance Manual Page iv © 2006 DH Instruments, Inc.
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Page 7: Introduction
PG7607™ Operation and Maintenance Manual 1. I NTRODUCTION 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. -
Page 8: Specifications
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 17 kg (29 lb) Instrument platform with no mass loaded. -
Page 9: Pressure Measurements
PG7607™ Operation and Maintenance Manual 1.2.3 PRESSURE MEASUREMENTS The piston is mounted in a fixed position on the mounting post. The cylinder floats and is rotated. 0.01 Pa + 0.5 ppm Sensitivity ± 2 ppm Reproducibility 1 Sensitivity: The smallest variation in input detectable in output. 2 Reproducibility: Combined long term stability of piston-cylinder effective area and masses. - Page 10 PG7607™ Operation and Maintenance Manual Page 4 © 2006 DH Instruments, Inc.
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Page 11: Installation
PG7607™ Operation and Maintenance Manual 2. I NSTALLATION 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. -
Page 12: Inspecting Contents
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 PG7607 #401385 #401385-CE MOTORIZED ROTATION MOTORIZED ROTATION NON-CE Platform 402360 402360-CE Mass Bell 402135 401698 Bell Jar W/KF16... -
Page 13: Piston-Cylinder Assembly
PG7607™ Operation and Maintenance Manual 2.1.2.2 PISTON-CYLINDER ASSEMBLY Table 2. 50 mm Gas Piston-Cylinder Assembly Parts List 5 kPa/kg PC-7607-TC Piston-cylinder kit 401463 Piston-cylinder 401566 Piston-cylinder case (w/ 2 bullet 402331 cases) Accessory Kit 401568 (2) O-rings, brown, Viton (2-015) 101928 Documentation 550100... - Page 14 PG7607™ Operation and Maintenance Manual Remove the piston (6) from its packing. Using lint free gloves or wipes to avoid direct contact with the piston critical surface (polished appearance) remove the piston (6) from its packing. Never handle the piston or cylinder with bare hands. Oil and acids from bare skin can damage the critical surfaces (polished appearance).
- Page 15 PG7607™ Operation and Maintenance Manual Tighten the cylinder retaining screw (2). Using a 5 mm Allen tool (one is supplied in the PG7607 accessories), tighten the cylinder retaining screw (2) into the cylinder stroke limiter (16) of the piston retaining assembly (5). Turn the screw CW to tighten. Since the cylinder stroke limiter (16) is free to move within the piston retaining assembly (5), the retaining screw (2) may rotate with the assembly, failing to tighten.
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Page 16: Figure 1. Piston-Cylinder Installation
PG7607™ Operation and Maintenance Manual Cylinder Cap Cylinder Retaining Screw Cylinder Cap O-ring (Brown, Viton, 2-015) Cylinder Piston Retainer Assembly/Nut Piston Mounting Post (part of PG7607 platform) Controlled Clearance Pressure (CCP) Inlet Test Pressure Inlet 10a. Piston Sealing O-ring - lower (Brown Viton, 2-026) 10b. -
Page 17: Operation
PG7607™ Operation and Maintenance Manual 3. O PERATION 3.1 CONTROLLED CLEARANCE PRESSURE (CCP) In normal operation, the CCP pressure is the measured pressure. The pressure applied to the TEST port should also be applied to the CCP port. PG7607 allows an independent pressure to be applied to the inside of the piston. The purpose of this feature is to allow the piston to be artificially expanded, varying the size of the gap between the piston and cylinder. - Page 18 PG7607™ Operation and Maintenance Manual Page 12 © 2006 DH Instruments, Inc.
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Page 19: Maintenance, Adjustments And Calibration
PG7607™ Operation and Maintenance Manual 4. M AINTENANCE DJUSTMENTS ALIBRATION 4.1 PISTON-CYLINDER ASSEMBLY AND DISASSEMBLY See the piston-cylinder installation and removal description in Section 2.2.2. The only possible further disassembly of the piston cylinder is the removal of the cylinder retaining screw and adjustment mass from the cylinder. -
Page 20: Cleaning Piston-Cylinders
PG7607™ Operation and Maintenance Manual 4.2 CLEANING PISTON-CYLINDERS The piston-cylinder cleaning methods described in the PG7000 Operation and Maintenance Manual should be used with the following exceptions/comments: • Water/detergent method: Due to the piston-cylinder’s large diameter and very small annular gap, it is very difficult to insert the piston into the cylinder when the piston is not installed on the PG7607 mounting post. -
Page 21: Disassembly Procedure
PG7607™ Operation and Maintenance Manual 4.4.1 DISASSEMBLY PROCEDURE To remove the cylinder stroke limiter from the piston retaining assembly follow the procedure below. To reassemble, follow the reassembly procedure in Section 4.4.2. Numerical references in this procedure refer to Figure 2. (See Section 4.1, Figure 1 for this step.) With the piston NOT installed, install the piston retaining assembly (5) onto the mounting post (7). -
Page 22: Reassembly Procedure
PG7607™ Operation and Maintenance Manual Spring Retaining Circlip Spring Washer (4) HighStop Springs Spring Carrier (4) LowStop Springs Cylinder Stroke Limiter Piston Retaining Nut Upper Piston Sealing O-ring (Brown, Viton, 2-026) Mounting Post O-ring (Brown, Viton, 2-019) Figure 2. Piston Retainer Assembly 4.4.2 REASSEMBLY PROCEDURE To reassemble the cylinder stroke limiter into the piston retaining assembly, follow the... - Page 23 PG7607™ Operation and Maintenance Manual Carefully slip the piston retaining nut (7) over the spring carrier (4), low stop springs (5) and piston stroke limiter (6). Take care so that the springs do not come out of the holes and so the piston retaining nut (7) does not cock on the spring carrier (4). Verify that no springs have fallen out of place by pressing the spring carrier (4) into the piston retaining nut (7) and compressing the springs.
- Page 24 PG7607™ Operation and Maintenance Manual Page 18 © 2006 DH Instruments, Inc.
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Page 25: Troubleshooting
PG7607™ Operation and Maintenance Manual 5. T ROUBLESHOOTING 5.1 OVERVIEW Identify the symptom or unexpected behavior you are observing from the SYMPTOM list below. A PROBABLE CAUSE is provided and a SOLUTION is proposed including references to manual sections that provide information that may be of assistance. Table 3 concerns troubleshooting issues for the PG7607 only. - Page 26 PG7607™ Operation and Maintenance Manual Page 20 © 2006 DH Instruments, Inc.
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