Fluke 787 User Manual
April 1997 Rev. 4, 3/13
© 1997-2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
787
ProcessMeter™
Users Manual
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 warranty 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 authorization 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.
11/99
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
Table of Contents
Title Page
Introduction .................................................................................................................... 1
Contacting Fluke ............................................................................................................ 1
Safety Information .......................................................................................................... 2
How to Get Started ......................................................................................................... 6
Getting Acquainted with the Meter ................................................................................. 7
Measuring Electrical Parameters .................................................................................... 18
Input Impedance ........................................................................................................ 18
Ranges ...................................................................................................................... 18
Measuring a Composite Signal .................................................................................. 18
Testing Diodes ........................................................................................................... 19
Displaying Minimum, Maximum, and Average ........................................................... 19
Using TouchHold ....................................................................................................... 20
Compensating for Test Lead Resistance ................................................................... 20
Using the Current Output Functions ............................................................................... 21
Source Mode ............................................................................................................. 21
Simulate Mode ........................................................................................................... 23
Changing the Current Span ....................................................................................... 23
Producing a Steady mA Output ................................................................................. 25
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Users Manual
Manually Stepping the mA Output ............................................................................ 26
Auto Ramping the mA Output ................................................................................... 27
Power-Up Options ......................................................................................................... 28
Battery Life ..................................................................................................................... 29
Using the Holster ........................................................................................................... 29
Maintenance .................................................................................................................. 30
General Maintenance ................................................................................................ 30
Calibration ................................................................................................................. 30
Replacing the Battery ................................................................................................ 30
Replacing a Fuse ...................................................................................................... 32
If the Meter does not Work ........................................................................................ 33
Replacement Parts and Accessories ............................................................................. 34
Specifications ................................................................................................................. 37
ii
List of Tables
Table Title Page
1. Symbols ................................................................................................................................. 5
2. Input/Output Jacks................................................................................................................. 8
3. Rotary Switch Positions for Measurements ........................................................................... 10
4. Rotary Knob Positions for mA Output .................................................................................... 12
5. Pushbuttons .......................................................................................................................... 13
6. Display ................................................................................................................................... 16
7. Range Requirements for Measuring a Composite Signal ...................................................... 18
8. Steady mA Output Adjustment .............................................................................................. 25
9. Steady mA Output Adjustment .............................................................................................. 26
10. mA Step Values ..................................................................................................................... 27
11. Power-Up Options ................................................................................................................. 28
12. Typical Alkaline Battery Life .................................................................................................. 29
13. Replacement Parts ................................................................................................................ 35
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Users Manual
iv
List of Figures
Figure Title Page
1. Fluke 787 ProcessMeter ........................................................................................................ 6
2. Input/Output Jacks................................................................................................................. 7
3. Rotary Switch Positions for Measurements ........................................................................... 9
4. Rotary Switch Positions for mA Output .................................................................................. 11
5. Pushbuttons .......................................................................................................................... 13
6. Elements of the Display ......................................................................................................... 15
7. Sourcing Current ................................................................................................................... 22
8. Simulating a Transmitter ........................................................................................................ 24
9. Using the Holster ................................................................................................................... 30
10. Replacing the Battery ............................................................................................................ 31
11. Replacing a Fuse .................................................................................................................. 33
12. Replacement Parts ................................................................................................................ 36
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Users Manual
vi
Introduction
Warning
Read “Safety Information” before you use the
Meter.
Your Fluke 787 ProcessMeter (referred to as “the
Product or Meter”) is a handheld, battery-operated tool for
measuring electrical parameters and supplying steady or
ramping current to test process instruments. 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 your Fluke distributor for information about DMM
accessories. To order replacement parts or spares, see
Table 13 near the end of this manual.
Contacting Fluke
To contact Fluke, call one of the following telephone
numbers:
• Technical Support USA: 1-800-44-FLUKE
(1-800-443-5853)
• Calibration/Repair USA: 1-888-99-FLUKE
(1-888-993-5853)
• Canada: 1-800-36-FLUKE (1-800-363-5853)
• Europe: +31 402-675-200
• Japan: +81-3-6714-3114
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Users Manual
• Singapore: +65-6799-5566
• Anywhere in the world: +1-425-446-5500
Or, visit Fluke's website at www.fluke.com.
To register your product, visit http://register.fluke.com.
To view, print, or download the latest manual supplement,
visit http://us.fluke.com/usen/support/manuals.
Safety Information
The symbols used on the Product and in this manual are
shown in Table 1.
A Warning identifies conditions and procedures that are
dangerous to the user. A Caution identifies conditions and
procedures that can cause damage to the Product or the
equipment under test.
Warning
To prevent possible electrical shock, fire, or
personal injury:
• Read “Safety Information” before using
the Product.
• Do not use the Meter if it is damaged.
Before you use 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 you use the Meter.
• Measure a known voltage first to make
sure that the Meter operates correctly. If
you are unsure, have the Meter examined.
• Do not operate the Meter around
explosive gas, vapor, or dust. Do not use
in a damp or wet environment.
• Use only a single 9 V battery, properly
installed in the meter case, to power the
Meter.
• When servicing the Meter, use only
specified replacement parts.
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ProcessMeter™
Safety Information
• Before a current measurement, do the
fuse test.
• Use the correct terminals, function, and
range for measurements.
• Do not work alone.
• For current measurements, connect the
Meter to the circuit after you remove
circuit power. Always put the Meter in
series with the circuit.
• Comply with local and national safety
requirements when in hazardous
locations.
• Only use test leads that have the same
voltage, category, and amperage ratings
as the Meter and that are approved by a
safety agency. When used with optional
accessories, the lowest category rating
applies.
• Do not use TouchHold to determine if
dangerous voltage is present. TouchHold
will not capture unstable or noisy
readings.
• To avoid false readings, which could lead
to possible electric shock or personal
injury, replace the battery as soon as the
battery indicator () appears.
• Remove test leads from the Meter before
you open the battery door.
• Close and latch the battery door before
using the Meter.
• To avoid personal injury or damage to the
Meter, use only the specified replacement
fuse, 440 mA 1000 V fast-blow, Fluke PN
943121.
• Do not exceed the Measurement Category
(CAT) rating of the lowest rated individual
component of a Product, probe, or
accessory.
• Do not use the TL175 or TP175 test
probes in CAT III or CAT IV environments
without the probe tip fully extended and
correct category rating visible in the
window.
• When the TL175 is used with instruments
or other accessories, the lowest category
rating of the combination applies. One
exception is when the probe is used with
the AC172 or AC175.
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Users Manual
Caution
To prevent possible damage to Product or to
equipment under test:
• Disconnect the power and discharge all
high-voltage capacitors before testing
resistance or continuity.
• Use the proper jacks, function, and range
for your measurement or sourcing
application.
• For best mechanical performance, the
Product must remain in the holster at all
times.
To protect yourself, adhere to the following guidelines:
• Use caution when working above 30V ac rms, 42V ac
pk, or 60V dc. Such voltages pose a shock hazard.
• When using the probes, keep your fingers behind the
finger guards on the probes.
• Connect the common test lead before you connect the
live test lead. When you disconnect test leads,
disconnect the live test lead first.
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ProcessMeter™
Safety Information
Table 1. Symbols
Symbol Meaning Symbol Meaning
AC (Alternating Current)
DC (Direct Current)
CAT II
CAT III
CAT IV
Risk of Danger. Important information. See
Manual.
Alternating or direct current Battery
Inspected and licensed by TÜV Product
Services
Meets Underwriters’ Laboratories safety
requirements
Fuse Double Insulation
Conforms to CAN/CSA-C22.2 No 61010-1,
second edition, including Amendment 1.
Measurement Category II is applicable to test and measuring circuits connected directly to utilization
points (socket outlets and similar points) of the low-voltage MAINS installation.
Measurement Category III is applicable to test and measuring circuits connected to the distribution part of
the building’s low-voltage MAINS installation.
Measurement Category IV is applicable to test and measuring circuits connected at the source of the
building’s low-voltage MAINS installation.
This product complies with the WEEE Directive (2002/96/EC) marking requirements. The affixed label
indicates that you must not discard this electrical/electronic product in domestic household waste. Product
Category: With reference to the equipment types in the WEEE Directive Annex I, this product is classed
as category 9 "Monitoring and Control Instrumentation" product. Do not dispose of this product as
unsorted municipal waste. Go to Fluke’s website for recycling information.
Earth ground
Conforms to European Union directives
Hazardous voltage.
Conforms to relevant North American
Safety Standards.
Conforms to relevant Australian EMC
requirements
Conforms to relevant South Korean EMC
Standards.
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Users Manual
How to Get Started
If you are familiar with the Fluke 80 Series DMM, read
“Using the Current Output Functions,” review the tables
and figures in “Getting Acquainted with the Meter,” and
begin using your Meter.
If you are unfamiliar with Fluke 80 Series DMMs, or DMMs
in general, read “Measuring Electrical Parameters” in
addition to the sections referenced in the previous
paragraph.
The sections following “Using the Current Output
Functions” contain information about the power-up options,
and battery and fuse replacement instructions.
Display
Rotary
Switch
PROCESSMETER
787
Pushbuttons
REL Hz
mA
A
COM
CAT
1000V
OUTPUT
mA
mA
V
H
Input/Output
Jacks
MIN MAX RANGE HOLD
% STEP COARSE FINE
mV
V
V
OFF
OUTPUT 0-24mA
SOURCE SIMULATE
+ +
A
mA
0.44A
(1A/ 30 sec)
FUSED
30mA
FUSED
Figure 1. Fluke 787 ProcessMeter
ee014f.eps
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ProcessMeter™
Getting Acquainted with the Meter
Getting Acquainted with the Meter
To become familiar with the features and functions of the
Meter, study the following figures and tables.
• Figure and Table 2 describe the input/output jacks.
• Figure and Table 3 describe the input functions you
get with the first five rotary switch positions.
OUTPUT 0-24mA
1
2
SOURCE SIMULATE
+ +
A
0.44A
(1A /30 sec)
FUSED
Figure 2. Input/Output Jacks
mA
• Figure and Table 4 describe the output functions you
get with the last two rotary switch positions.
• Figure and Table 5 describe the functions of the
pushbuttons.
• Figure and Table 6 explain what all the elements of
the display indicate.
3
30mA
FUSED
COM
CAT
1000V
V
4
ee001f.eps
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787
Users Manual
Table 2. Input/Output Jacks
Item Jack Measurement Functions Source Current Function
c A
d mA
V
COM
Input for current to 440 mA
continuous. (1A for up to 30
seconds.) Fused with a 440 mA
fuse.
Input for current to 30 mA.
Fused with a 440 mA fuse.
Input for voltage to 1000V, Ω,
continuity, and diode test.
Common for all measurements.
Output for dc current to 24 mA.
Common for dc current output to
24 mA.
Common for transmitter
Simulate Transmitter
Function
Output for transmitter
simulation to 24 mA. (Use in
series with an external loop
supply.)
simulation to 24 mA. (Use in
series with an external loop
supply.)
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