Fluke MPC1-1000, MPC1-3000 User Manual

MPC1-1000 and MPC1-3000

User’s Manual

MPC1-1000 and MPC1-3000 User’s Manual

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.

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.

DH Instruments, DH, DHI, MPC1-1000, and MPC1-3000 are trademarks, registered and otherwise, of

DH Instruments, a Fluke Company.

Document No. 3152066

DHI Document No. 550081b

010814

Printed in the USA

MPC1-1000 and MPC1-3000 User’s Manual

TABLE OF CONTENTS................................................................................i

TABLES....................................................................................................ii

FIGURES .................................................................................................. ii

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

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

1.2 LOCATION OF THE COMPONENTS........................................................................................................1

1.3 SPECIFICATIONS .....................................................................................................................................2

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

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

2.2 SITE REQUIREMENTS..............................................................................................................................3

2.3 INITIAL SETUP..........................................................................................................................................3

3. OPERATION ......................................................................................... 5

3.1 GENERAL OPERATING PRINCIPLES AND INFORMATION...................................................................5

3.1.1 MPC1..................................................................................................................................................................5

3.1.2 VALVES .............................................................................................................................................................5

3.1.3 VARIABLE VOLUME (VV).................................................................................................................................6

3.1.4 PRESSURE GAUGE..........................................................................................................................................6

3.2 SETTING ZERO GAUGE PRESSURE (VENTED)....................................................................................6

3.3 SETTING POSITIVE GAUGE PRESSURE (ABOVE ATMOSPHERE)......................................................7

3.3.1 INCREASING PRESSURE ................................................................................................................................7

3.3.2 DECREASING PRESSURE...............................................................................................................................8

3.4 SETTING NEGATIVE GAUGE PRESSURE (BELOW ATMOSPHERE)...................................................9

3.4.1 DECREASING PRESSURE...............................................................................................................................9

3.4.2 INCREASING PRESSURE ..............................................................................................................................10

3.5 SETTING ABSOLUTE PRESSURE.........................................................................................................10

3.5.1 INCREASING PRESSURE ..............................................................................................................................10

3.5.2 DECREASING PRESSURE.............................................................................................................................11

4. MAINTENANCE AND ADJUSTMENTS ................................................... 13

5. TROUBLESHOOTING .......................................................................... 15

5.1 GENERAL INFORMATION......................................................................................................................15

5.2 LEA S .....................................................................................................................................................15 K

5.2.1 PRESSURE INCREASE LEAK (ABOVE ATMOSPHERE) .............................................................................16

5.2.2 PRESSURE DECREASE LEAK (ABOVE ATMOSPHERE)............................................................................17

5.2.3 PRESSURE INCREASE LEAK (BELOW ATMOSPHERE).............................................................................18

5.2.4 PRESSURE DECREASE LEAK (BELOW ATMOSPHERE)...........................................................................19

5.3 TEST PRESSURE WILL NOT CHANGE.................................................................................................19

5.3.1 TEST INLET VALVE ........................................................................................................................................20

5.3.2 VARIABLE VOLUME (VV)...............................................................................................................................20

5.3.3 TEST OUTLET VALVE ....................................................................................................................................20

5.4 PRESSURE CHANGES SLOWLY OR SLUGGISHLY............................................................................21

MPC1-1000 and MPC1-3000 User’s Manual

6. ANNEXES ........................................................................................... 23

6.1 PNEUMATIC SCHEMATIC......................................................................................................................23

6.2 VARIABLE VOLUME INFORMATION.....................................................................................................24

6.2.1 VARIABLE VOLUME SPECIFICATIONS........................................................................................................25

Table 1. Variable Volume Specifications...............................................................................................25

Figure 1. Front Panel................................................................................................................................1

Figure 2. Back Panel ................................................................................................................................2

MPC1-1000 and MPC1-3000 User’s Manual

1. INTRODUCTION

1.1 PRODUCT OVERVIEW

The DHI Manually Operated Precision Pressure Controller (MPC1) is designed to provide a compact

and easy to use system for manually setting and adjusting pressures between vacuum and 1 000 or

3 000 psi systems where precise pressure control is required.

MPC1-1000 is for pressures to 1 000 psi (7 MPa), MPC1-3000 is for pressures to 3 000 psi (21 MPa).

1.2 LOCATION OF THE COMPONENTS

6 3

4 1

1. Inlet Valve

2. Variable Volume

3. Equalization Valve

4. Outlet Valve

5. Pressure Gauge (1 000 or 3 000 psi)

6. Outlet Selection Valve

Figure 1. Front Panel

MPC1-1000 and MPC1-3000 User’s Manual

1 3

1. Gas Supply Connection

2. Test Connection

3. Vent Connection

4. Vacuum Connection

Figure 2. Back Panel

1.3 SPECIFICATIONS

Pressure Range: MPC1-1000: Vacuum to 1 000 psi (7 MPa)

MPC1-3000: Vacuum to 3 000 psi (21 MPa)

Pressure Supply: Equal to or greater than the maximum pressure desired

MPC1-1000: 1 200 psi (8 MPa) (maximum supply)

MPC1-3000: 3 200 psi (22 MPa) (maximum supply)

Pressure Connections: 1/8 in. NPT Female (Supply, Test, Vent, Vacuum)

Dimensions: 320 mm x 172 mm x 370 mm (WxHxD)

(12.6 in. x 6.8 in. x 14.6 in.)

Weight: 5.65 kg (12.5 lbs.)

Due to the policy of continual product improvement all specifications are subject to change

without notice.

MPC1-1000 and MPC1-3000 User’s Manual

2. INSTALLATION

2.1 UNPACKING AND INSPECTION

The MPC1 is delivered with the inlet valve closed, exhaust valve open and the variable volume (VV)

fully screwed in. Cap plugs are pushed into all rear panel pressure connections.

2.2 SITE REQUIREMENTS

• Gas supply up to maximum amount for model used

• Vacuum source is necessary

2.3 INITIAL SETUP

The MPC1 should be connected to a suitable source of clean, dry, non-corrosive gas using a

1/8 in. NPT male connector to supply (1) on the rear panel. Using the same type connector, hook up

the test system to (2), vacuum source to (4), and any external venting tubing to (3) required to the

corresponding connections on the rear panel. See

Figure 2.

The front feet can be folded out to tilt the unit up if desired.

MPC1-1000 and MPC1-3000 User’s Manual

3. OPERATION

3.1 GENERAL OPERATING PRINCIPLES AND INFORMATION

3.1.1 MPC1

This instrument manually controls pressures from vacuum to 1 000 psi (7 MPa) (MPC1-1000)

or vacuum to 3 000 psi (21 MPa) (MPC1-3000) through the use of valves, a variable volume

(VV) pump and a pressure gauge. Fittings for an outside source of pressure and vacuum are

located on the back panel as are a test connection and vent port. When pressures

(both positive and negative) are needed that are beyond the ability of the VV to generate

by itself, an outside supply of pressure and/or vacuum is required.

The test inlet valve is plumbed directly to the test connection and the high pressure chamber

of the VV. Opening this valve regardless of the position of the equalization valve will result in

an increase of pressure in the test system when pressure is applied to the valve. THIS MAY

RESULT IN AN OVER PRESSURE CONDITION OF THE TEST INSTRUMENT. PLEASE USE

CAUTION WHEN OPERATING THE TEST INLET VALVE.

3.1.2 VALVES

Two types of valves (needle and ball) are used in the MPC1. Two needle valves are used to

control large changes between pressures. A ball valve is used to select between a vacuum

source or an atmospheric reference (vent).

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