Fluke 787 User Manual

787

ProcessMeter™

Users 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.

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	Fluke Europe B.V.
P.O. Box 9090	P.O. Box 1186
Everett, WA 98206-9090	5602 BD Eindhoven
U.S.A.	The Netherlands

11/99

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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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

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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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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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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: [phone]

•Japan: [phone]

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•Singapore: [phone]

•Anywhere in the world: [phone]

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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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.

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.

	•	Use the proper jacks, function, and range	• Connect the common test lead before you connect the
			live test lead. When you disconnect test leads,
		for your measurement or sourcing
			disconnect the live test lead first.
		application.

•For best mechanical performance, the Product must remain in the holster at all times.

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				ProcessMeter™
				Safety Information
		Table 1. Symbols
	Symbol	Meaning	Symbol	Meaning
		Risk of Danger. Important information. See		Earth ground
		Manual.
		AC (Alternating Current)		Conforms to European Union directives
		DC (Direct Current)		Conforms to relevant North American
				Safety Standards.
		Alternating or direct current		Battery
		Inspected and licensed by TÜV Product		Hazardous voltage.
		Services
		Meets Underwriters’ Laboratories safety		Conforms to relevant Australian EMC
		requirements		requirements
		Fuse		Double Insulation
		Conforms to CAN/CSA-C22.2 No 61010-1,		Conforms to relevant South Korean EMC
		second edition, including Amendment 1.		Standards.
	CAT II	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.
	CAT III	Measurement Category III is applicable to test and measuring circuits connected to the distribution part of
		the building’s low-voltage MAINS installation.
	CAT IV	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.

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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

787 PROCESSMETER

Pushbuttons

MIN MAX	RANGE	HOLD H
Rotary	REL	Hz
Switch

Input/Output

Jacks

30mA

FUSED

ee014f.eps

Figure 1. Fluke 787 ProcessMeter

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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.

•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.

	OUTPUT 0-24mA
1	SOURCE	SIMULATE		3
	+	+
	A	mA	COM	V

	0.44A	30mA	CAT
		FUSED
			1000V
	(1A /30 sec)
	FUSED

2

4

ee001f.eps

Figure 2. Input/Output Jacks

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Table 2. Input/Output Jacks

Item	Jack	Measurement Functions		Source Current Function		Simulate Transmitter
						Function
	cA	Input for current to 440 mA		Output for dc current to 24 mA.
		continuous. (1A for up to 30
		seconds.) Fused with a 440 mA
		fuse.
	dmA	Input for current to 30 mA.		Common for dc current output to		Output for transmitter
		Fused with a 440 mA fuse.		24 mA.		simulation to 24 mA. (Use in
						series with an external loop
						supply.)
	V	Input for voltage to 1000V, Ω,
		continuity, and diode test.
	COM	Common for all measurements.				Common for transmitter
						simulation to 24 mA. (Use in
						series with an external loop
						supply.)

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