Fluke 789 Manuale utente

789

ProcessMeter

Users Manual

August 2002 Rev.1, 2/03

All product names are trademarks of their respective companies.

LIMITED WARRANTY AND LIMITATION OF LIABILITY

This Fluke product will be free from defects in material and workmanship for three years from the date of purchase. This war-

ranty does not cover fuses, disposable batteries, or damage from accident, neglect, misuse, alteration, contamination, or

abnormal conditions of operation or handling. Resellers are not authorized to extend any other warranty on Fluke’s behalf.

To obtain service during the warranty period, contact your nearest Fluke authorized service center to obtain return authoriza-

tion information, then send the product to that Service Center with a description of the problem.

THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR

PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states or countries

do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of

liability may not apply to you.

Fluke Corporation

P.O. Box 9090

Everett, WA 98206-9090

U.S.A.

Fluke Europe B.V.

P.O. Box 1186

5602 BD Eindhoven

The Netherlands

11/99

Table of Contents

Title Page

Introduction....................................................................................................................1

Contacting Fluke............................................................................................................ 1

Safety Information.......................................................................................................... 2

How to Get Started........................................................................................................ 5

Getting Acquainted with the Meter................................................................................. 6

Measuring Electrical Parameters................................................................................... 18

Input Impedance....................................................................................................... 18

Ranges...................................................................................................................... 18

Testing Diodes.......................................................................................................... 18

Displaying Minimum, Maximum, and Average.......................................................... 19

Using AutoHold......................................................................................................... 19

Compensating for Test Lead Resistance.................................................................. 20

Using the Current Output Functions .............................................................................. 20

Source Mode............................................................................................................. 20

Simulate Mode.......................................................................................................... 22

Producing a Steady mA Output................................................................................. 24

Manually Stepping the mA Output ............................................................................ 25

789

Users Manual

Auto Ramping the mA Output.................................................................................... 26

Power-Up Options.......................................................................................................... 27

Loop Power Supply Mode.............................................................................................. 29

Battery Life..................................................................................................................... 31

Maintenance................................................................................................................... 31

General Maintenance..................................................................................................... 31

Calibration................................................................................................................. 31

Replacing a Fuse....................................................................................................... 34

If the Meter does not Work........................................................................................ 34

Replacement Parts and Accessories.............................................................................. 35

Specifications................................................................................................................. 39

iii

List of Tables

Table Title Page

1. International Symbols ........................................................................................................... 4

2. Input/Output Jacks................................................................................................................ 7

3. Rotary Function Switch Positions for Measurements............................................................ 9

4. Rotary Function Switch Positions for mA Output.................................................................. 11

5. Rotary Function Switch Position for Loop Supply................................................................. 11

6. Pushbuttons.......................................................................................................................... 13

7. Display.................................................................................................................................. 16

8. mA Output Adjust Pushbuttons............................................................................................. 25

9. mA Stepping Pushbuttons .................................................................................................... 26

10. mA Step Values.................................................................................................................... 26

11. Power-Up Options................................................................................................................. 28

12. Typical Alkaline Battery Life.................................................................................................. 31

789

Users Manual

List of Figures

Figure Title Page

1. Fluke 789 ProcessMeter....................................................................................................... 5

2. Input/Output Jacks................................................................................................................ 6

3. Rotary Function Switch Positions for Measurements............................................................ 8

4. Rotary Function Switch Positions for mA Output.................................................................. 10

5. Pushbuttons.......................................................................................................................... 12

6. Elements of the Display........................................................................................................ 15

7. Sourcing Current................................................................................................................... 21

8. Simulating a Transmitter....................................................................................................... 23

9. Loop Power Voltage vs. Current........................................................................................... 29

10. Connections for Supplying Loop Power................................................................................ 30

11. Replacing the Batteries and Fuses....................................................................................... 33

12. Replacement Parts ............................................................................................................... 36

789

Users Manual

ProcessMeter

Introduction

WWarning

Read “Safety Information” before using the

meter.

The Fluke 789 ProcessMeter(referred to as “the meter”)

is a handheld, battery-operated tool for measuring

electrical parameters, supplying steady or ramping current

to test process instruments, and providing a > 24 V loop

power supply. It has all the features of a digital multimeter,

plus current output capability.

If the meter is damaged or something is missing, contact

the place of purchase immediately. Contact a Fluke

distributor for information about DMM (digital multimeter)

accessories. To order replacement parts or spares, see

Table 13 near the end of this manual.

Contacting Fluke

To order accessories, receive operating assistance, or get

the location of the nearest Fluke distributor or Service

Center, call:

USA: 1-888-99-FLUKE (1-888-993-5853)

Canada: 1-800-36-FLUKE (1-800-363-5853)

Europe: +31 402-678-200

Japan: +81-3-3434-0181

Singapore: +65-738-5655

Anywhere in the world: +1-425-446-5500

789

Users Manual

Address correspondence to:

Fluke Corporation Fluke Europe B.V.

P.O. Box 9090, P.O. Box 1186,

Everett, WA 98206-9090 5602 BD Eindhoven

USA The Netherlands

Orvisit uson the World Wide Web: www.fluke.com

Safety Information

The meter complies with EN61010, ANSI/ISA S82.01-

1994 and CAN/CSA C22.2 No. 1010.1-92 Overvoltage

Category III. Use the meter only as specified in this

manual, otherwise the protection provided by the meter

may be impaired.

A Warning identifies conditions and actions that pose

hazard(s) to the user; a Caution identifies conditions and

actions that may damage the meter or the equipment

under test.

International symbols used on the meter and in this

manual are explained in Table 1.

WWarning

To avoid possible electric shock or personal

injury:

•Do not use the meter if it is damaged.

Before using the meter, inspect the case.

Look for cracks or missing plastic. Pay

particular attention to the insulation

surrounding the connectors.

•Make sure the battery door is closed and

latched before operating the meter.

•Remove test leads from the meter before

opening the battery door.

•Inspect the test leads for damaged

insulation or exposed metal. Check test

lead continuity. Replace damaged test

leads before using the meter.

•Do not use the meter if it operates

abnormally. Protection may be impaired.

When in doubt, have the meter serviced.

•Do not operate the meter around

explosive gas, vapor, or dust.

•Use only type AA batteries, properly

installed in the meter case, to power the

meter.

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