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Fluke P3800 Series User Manual

High pressure hydraulic deadweight tester
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
P3800 Series
High Pressure Hydraulic Deadweight Tester
Users Manual
PN 3952319
November 2010
© 2010 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

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  • Page 1 TestEquipmentDepot.com P3800 Series High Pressure Hydraulic Deadweight Tester Users Manual PN 3952319 November 2010 © 2010 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice. All product names are trademarks of their respective companies.

  • Page 3: Table Of Contents

    Table of Contents Chapter Title Page General Information ................1-1 Introduction......................1-1 How to Contact Fluke ..................1-1 Safety Information ..................... 1-2 Symbols Used in this Manual ................1-2 Hydraulic Circuit Schematic................1-3 Preparation ..................2-1 Location ......................2-1 Fluid Filling ....................... 2-1 Operation .....................
  • Page 4 P3800 Series Users Manual Temperature and Gravity Corrections ............... 6-2...
  • Page 5 List of Tables Table Title Page 1-1. Symbols........................1-2...
  • Page 6 P3800 Series Users Manual...
  • Page 7 List of Figures Figure Title Page 1-1. Hydraulic Circuit Schematic .................. 1-3 3-1. Pressure Connection - Method 1 ................3-1 3-2. Pressure Connection - Method 2 ................3-2 3-3. Remove Trapped Air....................3-2 3-4. Turn Capstan Fully Clockwise................3-3 3-5. Prime the Pressure Intensifier ................
  • Page 8 P3800 Series Users Manual...

  • Page 9: General Information

    Fluke. This section of the manual provides general information about the DWT. The P3800 Series of Deadweight Testers (DWT) provides a convenient means of testing high pressure instruments for calibration accuracy. The design incorporates the “Piston Gauge” principle, in which an applied pressure within the system, balances a known mass applied to a piston of known effective area.

  • Page 10: Safety Information

    Symbols used on the Deadweight Tester (DWT) and in this manual are explained in Table 1-1. Table 1-1. Symbols Symbol Description Earth Ground Important Information: refer to manual Do not dispose of this product as unsorted municipal waste. Go to Fluke’s website for recycling information.

  • Page 11: Hydraulic Circuit Schematic

    General Information Hydraulic Circuit Schematic Hydraulic Circuit Schematic glf01.eps Figure 1-1. Hydraulic Circuit Schematic...
  • Page 12 P3800 Series Users Manual...

  • Page 13: Preparation

    Chapter 2 Preparation Location Note Item number references in the following text, (1), (2), etc, relate to the hydraulic system schematic, shown in the figures below. Place the unit onto a clean, flat surface of a strong and rigid workbench. Ensure that the front of the unit is approximately ¾”...
  • Page 14 P3800 Series Users Manual...

  • Page 15: Operation

    Chapter 3 Operation Connections Connect the EUT to the test station using a gauge adapter and lens ring from the selection provided. W Caution This unit can generate very high pressures and, as a consequence, only metal-to-metal sealing is acceptable, i.e. no sealing washers of any description should be used (see Figure 3.1 and 3.2 for methods of sealing).

  • Page 16: Procedure For Removing Trapped Air From System

    P3800 Series Users Manual glf03.eps Figure 3-2. Pressure Connection - Method 2 Procedure for Removing Trapped Air from System glf04.bmp Figure 3-3. Remove Trapped Air...
  • Page 17 Operation Procedure for Removing Trapped Air from System 1. Open HP valve (1) and LP valve (2) fully, (counter-clockwise). 2. Open reservoir valve (3), (approximately 4 turns counter-clockwise). 3. Turn capstan fully out (counter-clockwise), and wait for approximately 60 seconds. glf05.bmp Figure 3-4.

  • Page 18: Procedure For Priming The Pressure Intensifier

    P3800 Series Users Manual Procedure for Priming the Pressure Intensifier glf06.bmp Figure 3-5. Prime the Pressure Intensifier 1. Close LP valve (2) by turning fully clockwise. 2. Turn capstan in (clockwise) until resistance is felt. This is a result of the pressure required to move the intensifier piston backward in its cylinder, and to lift the measuring piston and weight carrier.

  • Page 19: Procedure For Generating System Pressure

    Operation Procedure for Generating System Pressure Procedure for Generating System Pressure TEST PORT INTENSIFIER RESERVOIR VALVE (3) HP VALVE (1) LP VALVE (2) CAPSTAN glf07.eps Figure 3-6. Generate System Pressure 1. Close HP valve (1). 2. Open LP valve (2). 3.

  • Page 20: Generating Calibration Pressure

    P3800 Series Users Manual glf08.bmp Figure 3-7. Close Reserve Valve 4. Close reservoir valve (3). 5. Turn capstan in to generate system pressure. The displaced fluid from the ram screw moves the intensifier piston, generating system pressure to lift the measuring piston and weights.
  • Page 21 Operation Generating Calibration Pressure W Caution When reducing pressure ALWAYS use the capstan (by winding out counter-clockwise). NEVER use any of the valves. When reducing from high system pressures, some pressure is still retained in the system, even after winding the capstan fully out (approximately 700 psi / 50 bar).
  • Page 22 P3800 Series Users Manual...

  • Page 23: Maintenance

    Chapter 4 Maintenance Introduction The P3800 Series of High Pressure Deadweight Testers have been designed to require minimal maintenance. Routine maintenance entails keeping the unit clean and free from excess oil. The operating fluid should be changed at regular intervals due to potential contamination from items under test.

  • Page 24: Cleaning

    P3800 Series Users Manual PISTON NUT B PISTON PISTON NUT A CYLINDER O RING PISTON COLUMN glf10.eps Figure 4-1. Piston/Cylinder Removal Cleaning 1. Use “non-fluffing”, non-abrasive, lint-free tissue or absorbent cloth. Hold the Piston by the larger “head” end, and rub the tissue back and forth along its length.

  • Page 25: Replacement

    Maintenance Replacement W Caution Never touch the working surface of a clean piston with bare fingers — the natural oil in your skin can cause the piston and cylinder to stick. 5. Wipe excess fluid from the outside surfaces of the cylinder. 6.
  • Page 26 P3800 Series Users Manual...

  • Page 27: Recalibration

    Chapter 5 Recalibration Introduction To maintain the highest accuracy the DWT should be recalibrated at regular intervals. The exact period between recalibrations is dependant on ambient conditions and use. As a general guide, recalibration period should be more than 1 year and less than 3 years. Do's and Don'ts Don'ts •...
  • Page 28 P3800 Series Users Manual...

  • Page 29: Pressure Corrections

    Chapter 6 Pressure Corrections Introduction Pressure correction is required for high accuracy work and is due to the effects of pressure on the PCU assembly during operation. By reference to the certificate of calibration provided the actual pressure in the system can be obtained. All values relate to the environmental conditions stated on the certificate.
  • Page 30 P3800 Series Users Manual Temperature and Gravity Corrections Deadweight testers are manufactured to give an accurate pressure reference at the specified temperature and gravity values indicated on the certificates. The following Standard Values are applied during calibration unless otherwise requested during manufacture (see Certificate).
  • Page 31 Pressure Corrections Temperature and Gravity Corrections Explanation of Nomogram A straight line passing through the known values of altitude (H) and latitude (L) of the site of the DWT, when extended to scale ‘g’, will indicate the approximate value of ‘g’. 9.83 16000 14000...
  • Page 32 P3800 Series Users Manual...

This manual is also suitable for:

P3830P3840P3860

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