Fluke 787 Product Overview

787

Product Overview

ProcessMeter

®

November 2000 Rev. 1, 12/01

© 2000, 2001 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.

Quick Reference Information

!

Read Safety Informati on

UD, ac or dc A
M

average.

Starts recording, shows minimum, maximum , and

K Locks on next range. Hold 1 second for auto range.
I Toggles TouchHold

ing.

T When in Ω, selects continuity.
C Zeros display for relativ e readi ng.
F When in ac V measure, selects frequency counter.

in the

787 Users Manual

Measure Pushbuttons



or suspends MIN MAX record-

.

mA

0 - 24 mA dc

SOURCE SIMULATE

mA

[

Output

d

mA Pushbuttons

[ FINE Up/down 0.001 mA

[ COA RSE Up/down 0.1 mA

[ % STEP Up/down to next 25% step

J

Output

E

Slow ramp, 0% → 100% → 0%, 40 s econds

P

Fast ramp, 0% → 100% → 0%, 15 seconds

N

Stair-step ramp, 0, 25, 50, 75, 100%, pause 5 seconds at

each step

V

0 - 1000 V dc

0 - 1000 V ac

V

Hz

0.5 Hz - 20 kHz

Press

mA Choices:

U

0 - 440 mA dc,ac

(1A <30 sec.)

mA

A

0 - 30 mA dc

mA

A

Measure
Common

iii

0 - 40 M

Continuity

LIMITED WARRANTY & 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 disposable batteries or damage from accident, neglect, misuse 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, send your defective meter to the nearest Fluke Authorized 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 Fluke Europe B.V.
P.O. Box 9090 P.O. Box 1186
Everett, WA 5602 B.D. Eindhoven
98206-9090 USA The Netherlands

ProcessMeter

Introduction

WWarning

Read “Safety Information” before you use the
meter.

Your Fluke 787 ProcessMeter (referred to as “the
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.

TM

Your meter is shipped with a Flex-Stand
of TL75 test leads, one set of AC70A Alligator Clips, this
manual, and a CD-ROM containing the Users Manual. If
the meter is damaged or something is missing, contact the
place of purchase immediately.

holster, one set

Contact your Fluke distributor for information about DMM
accessories. To order replacement parts or spares, see
Table 7 near the end of this manual.

Accessing the Users Manual

The

787 Users Manual

shipped with your ProcessMeter.

is available on the 787 CD-ROM

1

787

Product Overview

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: [phone]
Japan: [phone]
Singapore: [phone]
Anywhere in the world: [phone]

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

Or visit us on the World Wide Web: www.fluke.com

Safety Information

The meter complies with IEC1010-1, ANSI/ISA S82.01­1994 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 you use the meter, inspect the
case. Look for cracks or missing plastic.
Pay particular attention to the insulation
surrounding the connectors.

2

ProcessMeter

Safety Information

• Make sure the battery door is closed and

latched before you operate the meter.

• Remove test leads from the meter before

you open the battery door.

• Inspect the test leads for damaged

insulation or exposed metal. Check test
leads continuity. Replace damaged test
leads before you use 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 a single 9V battery, properly

installed in the meter case, to power the
meter.

• When servicing the meter, use only

specified replacement parts.

Caution

To avoid possible damage to meter or to
equipment under test:

Disconnect the power and discharge all high­voltage capacitors before testing resistance
or continuity.

Use the proper jacks, function, and range for
your measurement or sourcing application.

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.

3

787

Product Overview

Table 1. International Symbols

Symbol Meaning Symbol Meaning

Alternating current Earth ground

Direct current Fuse

CAT III

4

c

Alternating or direct current Conforms to European Union directives
Refer to the manual for information about

this feature.
Battery

Meets Underwriters’ Laboratories safety
requirements

Overvoltage (Installation) Category III, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse
Withstand Voltage protection provided. Typical locations include; Mains, wall outlets, main distribution
levels connected closer to the supply system but less than the primary supply system (CAT IV).

T

Conforms to relevant Canadian
Standards Association directives

Double insulated

Inspected and licensed by TÜV Product
Services

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 1 and Table 2 describe the input/output jacks.

• Figure 2 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 1. Input/Output Jacks

mA

• Figure 3 and Table 4 describe the output functions
you get with the last two rotary switch positions.

• Figure 4 and Table 5 describe the functions of the
pushbuttons.

• Figure 5 and Table 6 explain what all the elements of
the display indicate.

3

30mA

FUSED

COM

CAT

1000V

V

4

ee001f.eps

5

787

V

Product Overview

Table 2. Input/Output Jacks

Item Jack Measurement Functions Source Current

Function

A c A

B d mA

C

D 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.

Simulate Transmitter

Function

Output for transmitter
simulation to 24 mA. (Use in
series with an external loop
supply.)

Common for transmitter
simulation to 24 mA. (Use in
series with an external loop
supply.)

6

ProcessMeter

Getting Acquainted with the Meter

4

6

3

5

mV

V

V

mA

A

OUTPUT

mA

mA

2

OFF

1

Figure 2. Rotary Switch Positions for Measurements

ee002f.eps

7

787

Product Overview

Table 3. Rotary Switch Positions for Measurements

No. Position Function(s) Pushbutton Actions

A OFF
B V A

C d V
D d mV

E O

F mA A L

8

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

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

High test lead in

dmA: measure mA
dc

ProcessMeter

Getting Acquainted with the Meter

mV

V

V

mA

A

OUTPUT

mA

mA

OFF

Figure 3. Rotary Switch Positions for mA Output

1

2

ee008.eps

9

787

Product Overview

Table 4. Rotary Switch Positions for mA Output

No. Position Default Function Pushbutton Actions

A OUTPUT

[ mA

B OUTPUT

mA

J

10

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 4. Pushbuttons

Table 5. Pushbuttons

No. Pushbutton Function(s)

A

B

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

11

787

Product Overview

Table 5. Pushbuttons (cont.)

No. Pushbutton Function(s)

12

C

D

E

F

G

H

X

M

% STEP

Z

K

COARSE

X

I

FINE
FINE

F

W

COARSE

C

Y

% STEP

T

W

Measuring:
mA Output:

Measuring:
mA Output:

Measuring:
mA Output:

Measuring:
mA Output:

Measuring:
mA Output:

Measuring:
mA Output:

Selects a MIN, MAX, or AVG action

Adjusts mA output up to the next higher 25% step

Selects a fixed range (hold for 1 second for auto range)

Adjusts output up 0.1 mA

Toggles TouchHold, or in MIN MAX recording, suspends recording

Adjusts output up 0.001 mA

Toggles between frequency counter and ac voltage measurement functions

Adjusts output down 0.001 mA

Toggles relative reading (sets a relative zero point)

Adjusts output down 0.1 mA

Toggles between Ω measure and continuity functions

Adjusts mA output down to the next lower 25% step

ProcessMeter

Getting Acquainted with the Meter

6 7

8

9

5

4

10

3

2

1

11

12

Figure 5. Elements of the Display

ee004f.eps

13

787

Product Overview

Table 6. Display

No. Element Meaning

A Percentage display

B OUTPUT

C D

D S

E Q

F B
G Numerals

H H
I MINMAXAVGR

14

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.

Table 6. Display (cont.)

ProcessMeter

Getting Acquainted with the Meter

No. Element

J mA, DC, mV, AC,

M or kΩ, kHz

K Auto

400100030

L 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.

15

787

Product Overview

Replacing the Battery

! Warning

To avoid electrical shock, remove test leads
from the meter before you open the battery
door.

Close and latch the battery door before you
use the meter.

Remove test leads from the meter before you open the
battery door.

Replace the battery as follows. Refer to Figure 6. 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.

16

Figure 6. Replacing the Battery

ee007f.eps

ProcessMeter

Getting Acquainted with the Meter

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 7
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 Phillips-head screws from the case
bottom and turn the case over.

4. Gently lift the bottom of the front of the case (nearest
the inpu t/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 A). Make sure that the gasket is properly
seated.

8. Close the case and reinstall the three screws.

9. Replace the battery door.

17

787

Product Overview

F1

F2

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 8 and listed in Table 7. Many more DMM
accessories are available from Fluke. For a catalog,

1

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.

18

Figure 7. Replacing a Fuse

ee012f.eps

ProcessMeter

Replacement Parts and Accessories

Table 7. Replacement Parts

Item Description Fluke PN or Model no. Quantity

BT1 9V battery, ANSI/NEDA 1604A or IEC 6LR61 614487 1
CG81Y Holster, Yellow CG81G 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
TL75 Standard test lead set TL75 1
AC70A Alligator clips for use with TL75 test lead set AC70A 1
TL20 Industrial test lead set TL20 Option
TM1 Product Overview Manual 1586717 1
TM2 Users Manual (CD-ROM) 1586721 1
TM3 Calibration Manual (not shown) 641891 Option

19

787

Product Overview

MP85

MP8

MP86

H2, 3, 4

F2

F1

BT1

H5, 6

S1

MP92

TL20 (Option) Industrial

Test Lead Set

AC70A

Alligator Clips

MP89, 90

Figure 8. Replacement Parts

Product
Overview
Manual

CD-ROM
(Users Manual)

TL75

Test Lead Set

Holster

CG81Y

ee015c.eps

20

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 0.001V 0.1% + 1

40.00 0.01V 0.1% + 1

400.0 0.1V 0.1% + 1
1000 1V 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

21

787

Product Overview

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 Accuracy, ±(% of Reading + Counts)

50 Hz to 60 Hz 45 Hz to 200 Hz 200 Hz to 500 Hz

400.0 mV 0.1 mV 0.7% + 4 1.2% + 4 7.0% + 4

4.000V 0.001V 0.7% + 2 1.2% + 4 7.0% + 4

40.00V 0.01V 0.7% + 2 1.2% + 4 7.0% + 4

400.0V 0.1V 0.7% + 2 1.2% + 4 7.0% + 4
1000V 1V 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
Input impedance: 10 M
Common mode rejection ratio: >60 dB at dc, 50 Hz, or 60 Hz

Ω

(nominal), < 100 pF, ac-coupled

±

(2% reading + 2% f.s.) typical

22

AC Current Measurement

ProcessMeter

Specifications

Range

45 Hz to 2 kHz

1.000A (Note) 0.001A 1% + 2 1.5V/A

Note: 440 mA continuous, 1A 30 seconds maximum
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) Typical Burden

Voltage

±

(2% reading + 2% f.s.) typical

DC Current Measurement

Range Resolution Accuracy, ±(% of Reading + Counts) Typical Burden

Voltage

30.000 mA 0.001 mA 0.05% + 2 14 mV/mA

1.000A (Note) 0.001A 0.2% + 2 1.5V/A

Note: 440 mA continuous, 1A 30 seconds maximum
Overload protection: 440 mA, 1000V fast-blow fuse

23

787

Product Overview

Ohms Measurement

Range Resolution Measurement Current Accuracy, ±(% of Reading + Counts)

400.0Ω 0. 1Ω 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: 1000V
Open circuit voltage: <3.9V

24

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 Minimum Sensitivity (rms Sinewave)

5 Hz to 5 kHz*

1 V 0.1 V
4 V 1 V

40 V 3 V

400 V 30 V

1000 V 300 V

ProcessMeter

Specifications

* Usable 0.5 Hz to 20 kHz with reduced sensitivity.

25

787

Product Overview

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 <100Ω

Open circuit voltage: <3.9V
Short circuit current: 1.2 mA typical
Overload protection: 1000V 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: 12V with battery voltage >8.5V

Simulate Mode:

Span: 0 mA or 4 mA to 20 mA, with overrange to 24 mA
Accuracy: 0.05% of span
Loop voltage: 24V nominal, 30V maximum, 15V minimum

Compliance voltage: 21V for 24V supply
Burden voltage: <3V

General Specifications

Maximum voltage applied between any jack and earth
ground: 1000V

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

Accuracy adders for use in RF Fields: In an RF field of
3V/m, change the accuracy specifications as follows:

For DC Millivolts Measrement, add 0.03% of range
For AC Volts Measurement, add 0.37% of range
For DC Current Measurement, 30.000 mA range, add

0.14% or range

For DC Current Output, add 0.02% of span
Accuracy for all meter functions is not specified in RF

fields > 3V/m.

Relative humidity: 95% up to 30°C, 75% up to 40°C,
45% up to 50°C, and 35% up to 55°C

26

Vibration: Random 2g, 5 to 500 Hz
Shock: 1 meter drop test
Water and dust protection: Complies with IEC529 IP52

(normal operating vacuum used for dust test)
Safety: Complies with IEC1010-1, ANSI/ISA S82.01-

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

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 and Flex-Stand: 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 and Flex-Stand: 638 g (22.5 oz)

Certifications: CSA, UL, TÜV

ProcessMeter

Specifications

27

787

Product Overview

28