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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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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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.
2
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.
4
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.
5
787
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
6
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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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.)
8
ProcessMeter™
Getting Acquainted with the Meter
4
6
3
5
mV
V
V
mA
A
OUTPUT
mA
mA
2
OFF
1
ee002f.eps
Figure 3. Rotary Switch Positions for Measurements
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Users Manual
Table 3. Rotary Switch Positions for Measurements
No. Position Function(s) Pushbutton Actions
OFF
V A
d V
d mV
O
mA A L
10
Meter off
Default: measure
ac V
F
Frequency counter
Measure dc V Same as above
Measure dc mV Same as above
Default: measure Ω
T for continuity
BLUE D test
High test lead in
cA: measure A dc
BLUE selects ac
High test lead in
dmA: measure mA
dc
M Selects a MIN, MAX, or AVG action (see pg. 18)
KSelects a fixed range (hold 1 second for auto range)
I Toggles TouchHold
C Toggles relative reading (sets a relative zero point)
Same as above, except diode test has only one range
Same as above, except there is only one range for each input jack
position, 30 mA or 1A
ProcessMeter™
Getting Acquainted with the Meter
mV
V
V
OFF
mA
A
OUTPUT
mA
mA
1
2
ee008.eps
Figure 4. Rotary Switch Positions for mA Output
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Users Manual
Table 4. Rotary Switch Positions for mA Output
No. Position Default Function Pushbutton Actions
OUTPUT
[ mA
OUTPUT
mA
J
12
Test leads in SOURCE:
Source 0 % mA
Test leads in
SIMULATE:
Sink 0 % mA
Test leads in SOURCE:
Source repeating
0 % -100 %-0 %
slow ramp (E)
Test leads in
SIMULATE:
Sink repeating
0 % -100 %-0 %
slow ramp (E)
% STEP X or W: Adjusts output up or down to the next 25 % step
COARSE Z or Y: Adjusts output up or down 0.1 mA
FINE X or W: Adjusts output up or down 0.001 mA
BLUE cycles through:
• Fast repeating 0 % -100 % - 0 % ramp (P on display)
• Repeating 0 % -100 % - 0 % ramp in 25 % steps (N on display)
• Slow repeating 0 % -100 % - 0 % ramp (E on display)
ProcessMeter™
Getting Acquainted with the Meter
2
3
MIN MAX RANGE HOLD
% STEP COARSE FINE
REL Hz
4
H
1
78
Figure 5. Pushbuttons
Table 5. Pushbuttons
No. Pushbutton Function(s)
b Toggles the backlight
U
(BLUE)
Rotary switch in mA A Lposition and test lead plugged into c A jack: Toggles
between ac and dc ampere measure
Rotary switch in O position: Selects diode test function (D)
Rotary switch in OUTPUT mA Jposition: Cycles through
• Slow repeating 0 % -100 % - 0 % ramp (Eon display)
• Fast repeating 0 % -100 % - 0 % ramp (P on display)
• Repeating 0 % -100 % - 0 % ramp in 25 % steps (N on display)
5
6
ee003f.eps
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Users Manual
Table 5. Pushbuttons (cont.)
No. Pushbutton Function(s)
X
M
% STEP
Z
K
COARSE
X
I
FINE
FINE
F
W
COARSE
C
Y
% STEP
T
W
Measuring: Selects a MIN, MAX, or AVG action (see pg. 18)
mA Output: Adjusts mA output up to the next higher 25% step
Measuring: Selects a fixed range (hold for 1 second for auto range)
mA Output: Adjusts output up 0.1 mA
Measuring: Toggles TouchHold, or in MIN MAX recording, suspends recording
mA Output: Adjusts output up 0.001 mA
Measuring: Toggles between frequency counter and ac voltage measurement functions
mA Output: Adjusts output down 0.001 mA
Measuring: Toggles relative reading (sets a relative zero point)
mA Output: Adjusts output down 0.1 mA
Measuring: Toggles between Ω measure and continuity functions
mA Output: Adjusts mA output down to the next lower 25 % step
14
ProcessMeter™
Getting Acquainted with the Meter
6 7
8
9
5
4
10
3
2
1
11
12
ee004f.eps
Figure 6. Elements of the Display
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Users Manual
Table 6. Display
No. Element Meaning
Percentage display
OUTPUT
D
S
Q
B
Numerals
H
MINMAXAVGR
16
Shows the mA measured value or output level in %, in a 0-20 mA or 4-20 mA scale
(change scales with power-up option)
Lights when mA output (source or simulate) is active
Lights in diode test function
Lights in continuity function
Lights when relative reading is on
Lights when the battery is low
Show the input or output value
Lights when TouchHold is on
MIN MAX recording status indicators:
MIN means the display is showing the minimum recorded value.
MAX means the display is showing the maximum recorded value.
AVG means the display is showing the average value since starting recording (up to
about 35 hours continuous recording time).
Rmeans MIN MAX recording is on.
ProcessMeter™
Getting Acquainted with the Meter
Table 6. Display (cont.)
No. Element
mA, DC, mV, AC, M
or kΩ, kHz
Auto
400100030
EP N
Meaning
Show the input or output units and multipliers associated with the numerals
Range status indicators:
Auto means autoranging is on.
The number plus the unit and multiplier indicate the active range.
One of these lights in mA ramping or step output (rotary switch position mA J):
E means slow continuous 0% - 100% - 0% ramping.
P means fast continuous 0% - 100% - 0% ramping.
N means ramping in 25% steps.
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Users Manual
Measuring Electrical Parameters
The proper sequence for taking measurements is as
follows:
1. Plug the test leads into the appropriate jacks.
2. Set the rotary knob.
3. Touch the probes to the test points.
Input Impedance
For the voltage measurement functions, input impedance
is 10 MΩ. See the specifications for more information.
Ranges
A measurement range determines the highest value the
Meter can measure. Most meter measurement functions
have more than one range (see the Specifications).
Being in the right range is important:
• If the range is too low, the display shows OL
(overload).
• If the range is too high, the Meter will not be
displaying its most accurate measurement.
The Meter normally automatically selects the lowest range
that will measure the applied input signal (Auto showing
on the display). Press Kif you want to lock the
range. Each time you press K, the Meter selects the
next higher range.
If you have locked the range, the Meter resumes auto
ranging when you change to another measurement
function or you press K and hold it for 1 second.
Measuring a Composite Signal
Because the input is dc-coupled, to measure an ac
voltage or frequency with a dc bias, you must manually
select the range specified in Table 7. For example, to
measure 100 mV ac with 20 V dc superimposed, select
the 4 V range.
Table 7. Range Requirements for Measuring a
Composite Signal
Range (ac) Max. Allowable AC + DC
400.0 mV 3 V
4.000 V 30 V
40.00 V 300 V
400.0 V 400 V
1000 V 1000 V
18
ProcessMeter™
Measuring Electrical Parameters
Testing Diodes
To test a single diode:
1. Insert the red test lead into the Vjack and
black test lead into the COM jack.
2. Set the rotary switch to O.
3. Press the BLUE pushbutton so that the D
symbol is on the display.
4. Touch the red probe to the anode and the black
probe to the cathode (side with band or bands). The
Meter should indicate the appropriate diode voltage
drop.
5. Reverse the probes. The Meter should display OL,
indicating high impedance.
6. The diode is good if it passes the tests in steps 4
and 5.
Displaying Minimum, Maximum, and Average
MIN MAX recording stores the lowest and highest
measurements, and maintains the average of all
measurements.
Press M to turn on MIN MAX recording. Readings
are stored until you turn the Meter off, switch to another
measurement or source function, or turn MIN MAX off.
The beeper sounds when a new maximum or minimum is
recorded. Auto power-off is disabled and auto ranging is
turned off during MIN MAX recording.
Press M again to cycle through the MAX, MIN, and
AVG displays. Press and hold M for 1 second to
erase stored measurements and exit.
If MIN MAX recording is on continuously for over 40
hours, minimum and maximum readings are still
recorded, but the displayed average no longer changes.
In MIN MAX recording, press I to suspend
recording; press I again to resume recording.
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Users Manual
Using TouchHold
Note
You must have MIN MAX recording off to use
TouchHold.
! Warning
To avoid possible electric shock, do not use
TouchHold to determine if dangerous voltage
is present. TouchHold will not capture
unstable or noisy readings.
Activate TouchHold
display on each new stable reading (except in the
frequency counter function). Press I to activate
TouchHold. This feature allows you to take
measurements in situations in which it is difficult to look at
the display. The Meter beeps and updates the display
with each new stable reading.
®
if you want the Meter to freeze the
Compensating for Test Lead Resistance
Use the relative reading feature (Q on the display) to set
the present measurement as a relative zero. A common
use for this is to compensate for test lead resistance
when measuring Ω.
Select the Ω measure function, touch the test leads
together, then press C. Until you press C
again, or switch to another measurement or source
function, the readings on the display will subtract the lead
resistance.
20
ProcessMeter™
Using the Current Output Functions
Using the Current Output Functions
The Meter provides steady, stepped, and ramped current
output for testing 0-20 mA and 4-20 mA current loops.
You can choose source mode, in which the Meter
supplies the current, or simulate mode, in which the Meter
regulates current in an externally-powered current loop.
Source Mode
Source mode is selected automatically by inserting the
test leads into the SOURCE + and − jacks as shown in
Figure 7. Use source mode whenever you need to supply
current into a passive circuit such as a current loop with
no loop supply. Source mode depletes the battery faster
than simulate mode, so use simulate mode whenever
possible.
The display looks the same in source and simulate
modes. The way to tell which mode is in use is to see
which pair of output jacks is in use.
21
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Users Manual
787
PROCESSMETER
22
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
REL Hz
mA
A
COM
CAT
1000V
OUTPUT
mA
mA
V
H
ee010f.eps
Figure 7. Sourcing Current
ProcessMeter™
Using the Current Output Functions
Simulate Mode
Simulate mode is so named because the Meter simulates
a current loop transmitter. Use simulate mode when an
external dc voltage of 24 to 30V is in series with the
current loop under test.
Caution
Set the rotary switch to one of the mA output
settings BEFORE you connect the test leads
to a current loop. Otherwise, a low
impedance from the other rotary switch
positions could be presented to the loop,
causing up to 50 mA to flow in the loop.
Simulate mode is selected automatically by inserting the
test leads into the SIMULATE + and − jacks as shown in
Figure 8. Simulate mode conserves battery life, so use it
instead of source mode whenever possible.
The display looks the same in source and simulate
modes. The way to tell which mode is in use is to see
which pair of output jacks is in use.
Changing the Current Span
The Meter’s current output span has two settings (with
overrange to 24 mA):
• 4 mA = 0%, 20 mA = 100% (factory default)
• 0 mA = 0%, 20 mA = 100%
To find out which span is selected, short the OUTPUT
SOURCE + and − jacks, turn the rotary switch to
OUTPUT [ mA, and observe the 0% output level.
To toggle and save the current output span in nonvolatile
memory (retained when the power is turned off):
1. Turn off the Meter.
2. Hold down the Kpushbutton while you turn the
rotary switch to OUTPUT [ mA.
3. Wait at least 2 seconds, then release K.
23
787
Users Manual
dc V
Power Supply
COM +24V
787
PROCESSMETER
24
REL Hz
mA
A
COM
CAT
1000V
OUTPUT
mA
V
H
mA
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 8. Simulating a Transmitter
ee011f.eps
ProcessMeter™
Using the Current Output Functions
Producing a Steady mA Output
When the rotary switch is in the OUTPUT [ mA position,
and the OUTPUT jacks are connected to an appropriate
load, the Meter produces a steady mA dc output. The
Meter begins sourcing or simulating 0%. Use the
pushbuttons to adjust the current as shown in Table 8.
Select either sourcing or simulating by choosing the
SOURCE or SIMULATE output jacks.
If the Meter cannot deliver the programmed current
because the load resistance is too high or the loop supply
voltage is too low, dashes (-----) appear on the numeric
display. When the impedance between the SOURCE jacks
is low enough, the Meter will resume sourcing.
Note
The STEP pushbuttons described on the next
page are available when the Meter is producing a
steady mA output. The STEP pushbuttons go to
the next multiple of 25 %.
Pushbutton Adjustment
Table 8. mA Output Adjust Pushbuttons
Z
Adjusts up 0.1 mA
K
COARSE
X
Adjusts up 0.001 mA
I
FINE
FINE
Adjusts down 0.001 mA
F
W
COARSE
Adjusts down 0.1 mA
C
Y
25
787
Users Manual
Manually Stepping the mA Output
When the rotary switch is in the OUTPUT [ mA position,
and the OUTPUT jacks are connected to an appropriate
load, the Meter produces a steady mA dc output. The
Meter begins sourcing or simulating 0 %. Use the
pushbuttons to step the current up and down in 25 %
steps as shown in Table 9. See Table 10 for mA values at
each 25 % step.
Select either sourcing or simulating by choosing the
SOURCE or SIMULATE output jacks.
If the Meter cannot deliver the programmed current
because the load resistance is too high or the loop supply
voltage is too low, dashes (-----) appear on the numeric
display. When the impedance between the SOURCE jacks
is low enough, the Meter will resume sourcing.
Note
The COARSE and FINE adjustment pushbuttons
described on the previous page are available
when you are manually stepping the mA output.
Pushbutton Adjustment
Table 9. mA Stepping Pushbuttons
X
M
Adjusts up to the next higher
25 % step
% STEP
% STEP
T
Adjusts down to the next lower
25 % step
W
26
ProcessMeter™
Using the Current Output Functions
Table 10. mA Step Values
Step
0 % 4.000 mA 0.000 mA
25 % 8.000 mA 5.000 mA
50 % 12.000 mA 10.000 mA
75 % 16.000 mA 15.000 mA
100 % 20.000 mA 20.000 mA
125 % 24.000 mA
120 % 24.000 mA
Value (for each span setting)
4 to 20 mA 0 to 20 mA
When the rotary switch is in the OUTPUT mA J
position, the Meter produces a continuously repeating 0 %
- 100 % - 0 % ramp in your choice of three ramp
waveforms:
E 0 % - 100 % - 0 % 40-second smooth ramp,
P 0 % - 100 % - 0 % 15-second smooth ramp
N 0 % - 100 % - 0 % Stair-step ramp in 25 % steps,
The ramp times are not adjustable. Press the BLUE
pushbutton to cycle through the three waveforms.
Auto Ramping the mA Output
Auto ramping gives you the ability to continuously apply a
varying current stimulus from the Meter to a transmitter,
while your hands remain free to test the response of the
transmitter. Select either sourcing or simulating by
choosing the SOURCE or SIMULATE jacks.
(default)
pausing 5 seconds at each step. Steps are listed
in Table 10.
Note
At any time during auto ramping, you can freeze
the ramp simply by moving the rotary switch to
the [ mA position. Then you can use the
COARSE, FINE, and % STEP adjust pushbuttons
to make adjustments.
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Power-Up Options
To select a power-up option, hold down the pushbutton
shown in Table 11 while turning the rotary switch from
OFF to any on position. Wait 2 seconds before you
release the pushbutton after powering up the Meter. The
Meter beeps to acknowledge the power-up option.
Table 11. Power-Up Options
Option Pushbutton Default Action Taken
Change current span 0 % setting K Remembers
Disable beeper T Enabled Disables beeper
Disable auto power-off BLUE Enabled Disables the feature that turns off the Meter
Only the setting for current span is retained when the
power is turned off. The others have to be repeated for
each operating session.
You may activate more than one power-up option by
holding down more than one pushbutton.
Toggles between 0 and 4 mA
last setting
power after 30 minutes of inactivity. Auto
power off is disabled regardless of this
option if MIN MAX recording is on.
28
ProcessMeter™
Battery Life
Battery Life
Warning
To avoid false readings, which could lead to
possible electric shock or personal injury,
replace the battery as soon as the battery
indicator (B) appears.
Table 12 shows typical alkaline battery life. To preserve
battery life:
• Use current simulation instead of sourcing when
possible.
• Avoid using the backlight.
• Do not disable the automatic power-off feature.
• Turn the Meter off when you are not using it.
Table 12. Typical Alkaline Battery Life
Meter Operation Hours
Measuring any parameter or simulating
current
Sourcing 12 mA into 500Ω 12
80
Using the Holster
The Meter is supplied with a snap-on holster that absorbs
shocks and protects the Meter from rough handling. You
can turn the Meter over in the holster to protect the face of
the meter from scratches when carrying the Meter.
Caution
For best mechanical performance, the
Product must remain in the holster at all
times.
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Users Manual
Meter in holster face
down for protection
Figure 9. Using the Holster
Holster with
probe clip
ee009f.eps
Maintenance
This section provides some basic maintenance
procedures. Repair, calibration, servicing not covered in
this manual must be performed by qualified personnel. For
maintenance procedures not described in this manual,
contact a Fluke Service Center.
General Maintenance
Periodically wipe the case with a damp cloth and
detergent; do not use abrasives or solvents.
Calibration
Calibrate your Meter once a year to ensure that it performs
according to its specifications. Contact a Fluke Service
Center for instructions.
Replacing the Battery
! Warning
To prevent possible electrical shock, fire, or
personal injury:
• Remove test leads from the Meter before
opening the battery door.
• Make sure the battery door is closed and
latched before operating the Meter.
30
ProcessMeter™
Maintenance
Remove test leads from the Meter before you open the
battery door.
Replace the battery as follows. Refer to Figure 10. Use an
alkaline 9V battery, type ANSI/NEDA 1604A or IEC
6LR61.
1. Remove the test leads and set the rotary switch to
OFF.
2. With a standard blade hand screwdriver, turn each
battery door screw counterclockwise so that the slot is
parallel with the screw picture molded into the case.
3. Lift off the battery door.
ee007f.eps
Figure 10. Replacing the Battery
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Replacing a Fuse
! Warning
To avoid personal injury or damage to the
Meter, use only the specified replacement
fuse, 440 mA 1000V fast-blow, Fluke
PN 943121.
Both current input jacks are fused with a separate 440 mA
fuse. To determine if a fuse is blown:
1. Turn the rotary switch to mA A L.
2. Plug the black test lead into COM, and the red test
lead into cA.
3. Using an ohmmeter, check the resistance between
the meter test leads. If the resistance is about 1Ω, the
fuse is good. An open means the fuse is blown.
4. Move red test lead to dmA.
5. Using an ohmmeter, check the resistance between
the meter test leads. If the resistance is about 14Ω,
the fuse is good. An open means the fuse is blown.
If a fuse is blown, replace it as follows. Refer to Figure 11
as necessary:
1. Remove the test leads from the Meter and turn the
rotary switch to OFF.
2. Remove the battery door.
3. Remove the three Hexalobular (star) screws from the
case bottom and turn the case over.
4. Gently lift the bottom of the front of the case (nearest
the input/output jacks) until the top unsnaps from the
rear half of the case.
5. Replace the blown fuse with the exact type specified:
440 mA 1000V fast-blow fuse, Fluke PN 943121. Both
fuses are the same type.
6. Make sure the rotary switch is in the OFF position.
7. Fit the top of case together, engaging the two snaps
(item ). Make sure that the gasket is properly
seated.
8. Close the case and reinstall the three screws.
9. Replace the battery door.
32
ProcessMeter™
Maintenance
If the Meter does not Work
• Examine the case for physical damage. If there is
damage, make no further attempt to use the Meter,
and contact a Fluke Service Center.
• Check the battery, fuses, and test leads.
• Review this manual to make sure you are using the
correct jacks and rotary switch position.
If the Meter still does not work, contact a Fluke Service
Center. If the Meter is under warranty, it will be repaired or
replaced (at Fluke’s option) and returned at no charge.
See the Warranty on the back of the title page for terms. If
the warranty has lapsed, the Meter will be repaired and
returned for a fixed fee. Contact a Fluke Service Center for
information and price.
F1
F2
1
ee012f.eps
Figure 11. Replacing a Fuse
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Replacement Parts and Accessories
! Warning
To avoid personal injury or damage to the
Meter, use only the specified replacement
fuse, 440 mA 1000V fast-blow, Fluke
PN 943121.
Note
When servicing the Meter, use only the
replacement parts specified here.
Replacement parts and some accessories are shown in
Figure 12 and listed in Table 13. Many more DMM
accessories are available from Fluke. For a catalog,
contact your nearest Fluke distributor.
To find out how to order parts or accessories use the
telephone numbers or addresses shown on page 1 of this
manual.
34
ProcessMeter™
Replacement Parts and Accessories
Table 13. Replacement Parts
Item Description Fluke PN or Model no. Quantity
BT1 9V battery, ANSI/NEDA 1604A or IEC 6LR61 614487 1
MP103 Holster, Yellow 2074033 1
! F1, 2 Fuse, 440 mA, 1000V fast-blow 943121 2
MP85 Case top 619962 1
MP86 Case bottom 619939 1
H2, 3, 4 Case screw 832246 3
MP89, 90 Non-skid foot 824466 2
MP8 O-ring for input/output receptacle 831933 1
MP92 Battery door 619947 1
H5, 6 Battery door fasteners 948609 2
S1 Keypad 646932 1
Not shown Test Leads variable
Not shown Alligator Clips variable
Not shown Industrial test lead set variable
[1]
1 (set of 2)
[1]
1 (set of 2)
[1]
Option
Not shown Quick Reference Guide 4276679 1
Not shown Users Manual (CD-ROM) 1586721 1
Not shown Calibration Manual 641891 Option
[1] See www.fluke.com for more information about the test leads and alligator clips available for your region.
35
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Users Manual
MP85
Holster
MP103
S1
36
MP8
MP86
H2, 3, 4
F2
F1
BT1
H5, 6
MP89, 90
MP92
Figure 12. Replacement Parts
Tilt Stand
CD-ROM
(Users Manual)
ee015c.eps
ProcessMeter™
Specifications
Specifications
All specifications apply from +18°C to +28°C unless
stated otherwise.
All specifications assume a 5 minute warmup period.
The standard specification interval is 1 year.
Note
“Counts” means number of increments or
decrements of the least significant digit.
DC Volts Measurement
Range (V dc) Resolution Accuracy, ±(% of Reading + Counts)
4.000 0.001 V 0.1 % + 1
40.00 0.01 V 0.1 % + 1
400.0 0.1 V 0.1 % + 1
1000 1 V 0.1 % + 1
Input impedance: 10 MΩ (nominal), <100 pF
Normal mode rejection ratio: >60 dB at 50 Hz or 60 Hz
Common mode rejection ratio: >120 dB at dc, 50 Hz, or 60 Hz
Overvoltage protection: 1000V
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Users Manual
DC Millivolts Measurement
Range (mV dc) Resolution Accuracy (% of Reading + Counts)
400.0 0.1 mV 0.1 % + 1
AC Volts Measurement
Range (ac) Resolution
400.0 mV 0.1 mV 0.7 % + 4 1.2 % + 4 7.0 % + 4
4.000 V 0.001 V 0.7 % + 2 1.2 % + 4 7.0 % + 4
40.00 V 0.01 V 0.7 % + 2 1.2 % + 4 7.0 % + 4
400.0 V 0.1 V 0.7 % + 2 1.2 % + 4 7.0 % + 4
1000 V 1 V 0.7 % + 2 1.2 % + 4 7.0 % + 4
Specifications are valid from 5 % to 100 % of amplitude range.
AC conversion: true rms
Maximum crest factor: 3
±
For non-sinusoidal waveforms, add
Ω
Input impedance: 10 M
Common mode rejection ratio: >60 dB at dc, 50 Hz, or 60 Hz
(nominal), < 100 pF, ac-coupled
(2 % reading + 2 % f.s.) typical
50 Hz to 60 Hz 45 Hz to 200 Hz 200 Hz to 500 Hz
Accuracy, ±(% of Reading + Counts)
38
ProcessMeter™
Specifications
AC Current Measurement
Range
45 Hz to 2 kHz
1.000 A (Note) 0.001 A 1 % + 2 1.5 V/A
Note: 440 mA continuous, 1 A 30 seconds maximum on, 5 minutes off
Specifications are valid from 5 % to 100 % of amplitude range.
AC conversion: true rms
Maximum crest factor: 3
For non-sinusoidal waveforms, add
Overload protection 440 mA, 1000V fast-blow fuse
Resolution Accuracy, ±(% of Reading + Counts)
±
(2 % reading + 2 % f.s.) typical
Typical Burden
Voltage
DC Current Measurement
Range Resolution Accuracy, ±(% of Reading + Counts)
30.000 mA 0.001 mA 0.05 % + 2 14 mV/mA
1.000 A (Note) 0.001 A 0.2 % + 2 1.5 V/A
Note: 440 mA continuous, 1A 30 seconds maximum on, 5 minutes off
Overload protection: 440 mA, 1000V fast-blow fuse
Typical Burden
Voltage
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Users Manual
Ohms Measurement
Range Resolution Measurement Current Accuracy, ±(% of Reading + Counts)
400.0 Ω 0.1 Ω 220 μA 0.2 % + 2
4.000 kΩ 0.001 kΩ 59 μA 0.2 % + 1
40.00 kΩ 0.01 kΩ 5.9 μA 0.2 % + 1
400.0 kΩ 0.1 kΩ 590 nA 0.2 % + 1
4.000 MΩ 0.001 MΩ 220 nA 0.35 % + 3
40.00 MΩ 0.01 MΩ 22 nA 2.5 % + 3
Overload protection: 1000 V
Open circuit voltage: <3.9 V
40
ProcessMeter™
Specifications
Frequency Counter Accuracy
Range Resolution Accuracy, ±(% of Reading + Counts)
199.99 Hz 0.01 Hz 0.005 % + 1
1999.9 Hz 0.1 Hz 0.005 % + 1
19.999 kHz 0.001 kHz 0.005 % + 1
Display updates 3 times/second at >10 Hz
Frequency Counter Sensitivity
Input Range
1 V 0.1 V
4 V 1 V
40 V 3 V
400 V 30 V
1000 V 300 V
Minimum Sensitivity (rms Sinewave)
5 Hz to 5 kHz*
* Usable 0.5 Hz to 20 kHz with reduced sensitivity.
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Diode Test and Continuity Test
Diode test indication: display voltage drop: 0.2 mA
nominal test current at 0.6V: 2.4V full scale, accuracy
±(2% + 1 count)
Continuity test indication: continuous audible tone for
test resistance <100 Ω
Open circuit voltage: <3.9 V
Short circuit current: 1.2 mA typical
Overload protection: 1000 V rms
DC Current Output
Source mode:
Span: 0 mA or 4 mA to 20 mA, with overrange to 24 mA
Accuracy: 0.05 % of span
Compliance voltage: 12 V with battery voltage >8.5 V
Simulate Mode:
Span: 0 mA or 4 mA to 20 mA, with overrange to 24 mA
Accuracy: 0.05 % of span
Loop voltage: 24 V nominal, 30 V maximum, 15 V
minimum
Compliance voltage: 21 V for 24 V supply
Burden voltage: <3 V
42
ProcessMeter™
Specifications
General Specifications
Maximum voltage applied between
any jack and earth ground .................................... 1000 V
Storage temperature ............................................. -40 °C to 60 °C
Operating temperature .......................................... -20 °C to 55 °C
Operating altitude .................................................. 2000 meters maximum
Temperature coefficient ........................................ 0.05 x specified accuracy per °C for temperatures <18 °C or >28 °C
Relative humidity ................................................... 95 % up to 30 °C, 75 % up to 40 °C, 45 % up to 50 °C, and 35 % up to 55 °C
Vibration ................................................................. Random Mil-prf-28800f, 10 Hz to 500 Hz
Shock ...................................................................... 1 meter drop test
Power requirements .............................................. Single 9V battery (ANSI/NEDA 1604A or IEC 6LR61)
Size ......................................................................... 32 mm H x 87 mm W x 187 mm L (1.25 in H x 3.41 in W x 7.35 in L)
With holster ..................................................... 52 mm H x 98 mm W x 201 mm L (2.06 in H x 3.86 in W x 7.93 in L)
Weight .................................................................... 369 g (13 oz)
With holster ..................................................... 638 g (22.5 oz)
Safety ...................................................................... IEC 61010-1, 1000 V CAT III, Pollution Degree 2
Electromagnetic Environment .............................. IEC 61326-1, Portable
Electromagnetic Compatibility ............................. Accuracy for all ProcessMeter functions is not specified in RF field >3V/m
Applies to use in Korea only ............................ Class A Equipment (Industrial Broadcasting & Communication Equipment)
[1] This product meets requirements for industrial (Class A) electromagnetic wave equipment and the seller or user should take notice of it. This
equipment is intended for use in business environments and not to be used in homes.
[1]
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