Fluke 177, 175 Operating Manual
May 2003 Rev. 2, 10/15
© 2003-2015 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
175, 177, 179
True-rms Multimeters
Users Manual
Lifetime Limited Warranty
Each Fluke 20, 70, 80, 170 and 180 Series DMM will be free from defects in material and workmanship for its lifetime. As used herein, “lifetime” is defined as seven years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years from
the date of purchase. This warranty does not cover fuses, disposable batteries, damage from neglect, misuse, contamination, alteration,
accident or abnormal conditions of operation or handling, including failures caused by use outside of the product’s specifications, or normal
wear and tear of mechanical components. This warranty covers the original purchaser only and is not transferable.
For ten years from the date of purchase, this warranty also covers the LCD. Thereafter, for the lifetime of the DMM, Fluke will replace the
LCD for a fee based on then current component acquisition costs.
To establish original ownership and prove date of purchase, please complete and return the registration card accompanying the product, or
register your product on http://www.fluke.com. Fluke will, at its option, repair at no charge, replace or refund the purchase price of a defective
product purchased through a Fluke authorized sales outlet and at the applicable international price. Fluke reserves the right to charge for
importation costs of repair/replacement parts if the product purchased in one country is sent for repair elsewhere.
If the product is defective, 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 difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk
for damage in transit. Fluke will pay return transportation for product repaired or replaced in-warranty. Before making any non-warranty repair, Fluke will estimate cost and obtain authorization, then invoice you for repair and return transportation.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE
EXPRESSED OR IMPLIED. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY. AUTHORIZED RESELLERS ARE NOT
AUTHORIZED TO EXTEND ANY DIFFERENT WARRANTY ON FLUKE’S BEHALF. Since some states 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. If any provision of this
warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity
or enforceability of any other provision.
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
2/02
Table of Contents
Title Page
Introduction .............................................................................................................................. 1
How to Contact Fluke .............................................................................................................. 1
Safety Information .................................................................................................................... 1
Symbols ................................................................................................................................... 3
Unsafe Voltage ........................................................................................................................ 5
Test Lead Alert ........................................................................................................................ 5
Terminals ................................................................................................................................. 5
Product Buttons ....................................................................................................................... 6
Rotary Switch Positions ........................................................................................................... 6
Display ..................................................................................................................................... 7
Battery Saver (Sleep Mode) .................................................................................................... 9
MIN MAX AVG Recording Mode ............................................................................................. 9
Display HOLD and AutoHOLD Modes ..................................................................................... 10
Manual Range and Autorange ................................................................................................. 10
Power-Up Options ................................................................................................................... 11
Basic Measurements ............................................................................................................... 11
Measure AC and DC Voltage ............................................................................................. 12
Measure Resistance ........................................................................................................... 12
Measure Capacitance ......................................................................................................... 12
Test for Continuity............................................................................................................... 13
Measure Temperature (179 Only) ...................................................................................... 13
Test Diodes ......................................................................................................................... 13
Measure AC or DC Current ................................................................................................ 14
AC Zero Input Behavior of True-rms Meters ...................................................................... 14
Measure Frequency ............................................................................................................ 15
AC/DC Voltage Frequency ................................................................................................. 15
AC Current Frequency ........................................................................................................ 15
Use the Bar Graph ................................................................................................................... 16
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Users Manual
Maintenance ............................................................................................................................ 16
Clean the Product ............................................................................................................... 17
Test the Fuses .................................................................................................................... 17
Replace the Battery and Fuses .......................................................................................... 17
Specifications ........................................................................................................................... 18
Electrical Specifications ........................................................................................................... 20
ii
Introduction
The Fluke 175, 177, and 179 are battery-powered, True-rms
multimeters (the Product) with a 6000-count, 3 3/4-digit display
and a bar graph. This manual applies to all three models. All
figures show the 179.
How to Contact 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
• Russia: +8-495-664-75-12
• 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
In this manual, 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.
XW Warning
To prevent possible electrical shock, fire, or personal
injury:
• Read all safety information before you use the
Product.
• Carefully read all instructions.
• Use the Product only as specified, or the protection
supplied by the Product can be compromised.
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Users Manual
• Examine the case before you use the Product. Look
for cracks or missing plastic. Carefully look at the
insulation around the terminals.
• Do not use the Product around explosive gas, vapor,
or in damp or wet environments.
• Do not work alone.
• Limit operation to the specified measurement
category, voltage, or amperage ratings.
• Comply with local and national safety codes. Use
personal protective equipment (approved rubber
gloves, face protection, and flame-resistant clothes)
to prevent shock and arc blast injury where
hazardous live conductors are exposed.
• Use Product-approved measurement category (CAT),
voltage, and amperage rated accessories (probes,
test leads, and adapters) for all measurements.
• Do not exceed the Measurement Category (CAT)
rating of the lowest rated individual component of a
Product, probe, or accessory.
• Do not touch voltages >30 V ac rms, 42 V ac peak, or
60 V dc.
• Keep fingers behind the finger guards on the probes.
• Use only current probes, test leads, and adapters
supplied with the Product.
• Connect the common test lead before the live test
lead and remove the live test lead before the
common test lead.
• Disable the Product if it is damaged.
• Do not use the Product if it is damaged.
• Do not use the Product if it operates incorrectly.
• Only use probes, test leads, and accessories that
have the same measurement category, voltage, and
amperage ratings as the Product.
• Remove the batteries if the Product is not used for an
extended period of time, or if stored in temperatures
above 50 °C. If the batteries are not removed, battery
leakage can damage the Product.
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True-rms Multimeters
Symbols
• The battery door must be closed and locked before
you operate the Product.
• Use only cables with correct voltage ratings.
• Remove all probes, test leads, and accessories
before the battery door is opened.
• Replace the batteries when the low battery indicator
shows to prevent incorrect measurements.
• Do not apply more than the rated voltage, between
the terminals or between each terminal and earth
ground.
• Measure a known voltage first to make sure that the
Product operates correctly.
• Use the correct terminals, function, and range for
measurements.
• Do not use test leads if they are damaged. Examine
the test leads for damaged insulation, exposed metal,
or if the wear indicator shows. Check test lead
continuity.
• Do not touch the probes to a voltage source when
the test leads are connected to the current terminals.
• Do not use test leads if they are damaged. Examine
the test leads for damaged insulation and measure a
known voltage.
• Do not use in CAT III or CAT IV environments without
the protective cap installed on test probe. The
protective cap decreases the exposed probe metal to
<4 mm. This decreases the possibility of arc flash
from short circuits.
Symbols
Table 1 is a list of the symbols used on the Product and in this
manual.
Table 1. Symbols
Symbol Description
Consult user documentation.
W WARNING. RISK OF DANGER.
X
WARNING. HAZARDOUS VOLTAGE. Risk of
electric shock.
Earth
AC (Alternating Current)
DC (Direct Current)
Both direct and alternating current
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Users Manual
Table 1. Symbols (cont.)
Symbol Description
Earth
Capacitance
Fuse
P Conforms to European Union directives.
T Double Insulated
Low battery. Replace battery.
Minimum fuse interrupt rating.
R Continuity test or continuity beeper tone.
P Conforms to European Union directives.
)
Certified by CSA Group to North American safety
standards.
Certified by TÜV SÜD Product Service.
Ã
Conforms to relevant Australian Safety and EMC
standards.
Conforms to relevant South Korean EMC
Standards.
Table 1. Symbols (cont.)
Symbol Description
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
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.
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True-rms Multimeters
Unsafe Voltage
Unsafe Voltage
During a voltage measurement, the Product alerts you to the
presence of a potentially hazardous voltage. When the Product
detects a voltage ≥30 V or a voltage overload (), the
shows on the display to alert you to the presence of a potentially
hazardous voltage.
Y symbol
Test Lead Alert
To remind you to check that the test leads are in the correct
terminals, momentarily shows on the display when you move
the rotary switch to or from the mA or A position.
XW Warning
Attempting to make a measurement with a test lead in an
incorrect terminal might blow a fuse, damage the
Product, and cause serious personal injury.
Terminals
Table 2 shows the terminals on the Product.
Table 2. Terminals
1
V
FUSED
2
Item Description
Input terminal for ac and dc milliamp measurements to
400 mA and frequency measurements.
Input terminal for ac and dc current measurements to
10 A and frequency measurements.
Input terminal for voltage, continuity, resistance, diode,
capacitance, frequency, and temperature (179 only)
measurements.
Common (return) terminal for all measurements.
3
4
aik01f.eps
5
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