Fluke 101 User manual

July 2013, Rev. 2, 12/22
© 2013-2022 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
101
Digital Multimeter
Users Manual

LIMITED WARRANTY AND LIMITATION OF LIABILITY
This Fluke product will be free from defects in material and workmanship for one year 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.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99

i
Table of Contents
Title Page
Introduction................................................................................................................. 1
Contact Fluke ............................................................................................................. 1
Safety Information ...................................................................................................... 2
Instrument Overview................................................................................................... 3
Terminals................................................................................................................ 3
Display.................................................................................................................... 4
Rotary Switch ......................................................................................................... 6
Auto Power Off ........................................................................................................... 7
Measurements............................................................................................................ 8
Data Hold ............................................................................................................... 8
Measure AC and DC Voltage ................................................................................. 8
Measure Resistance............................................................................................... 10
Test for Continuity .................................................................................................. 10
Test Diodes ............................................................................................................ 12
Measure Capacitance ............................................................................................ 12

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Measure Frequency and Duty Cycle...................................................................... 14
Maintenance............................................................................................................... 16
General Maintenance............................................................................................. 16
Replace Batteries................................................................................................... 17
Service and Parts....................................................................................................... 18
General Specifications ............................................................................................... 18
Accuracy Specifications ............................................................................................. 20

1
Introduction
The Fluke 101 Multimeter (the Product) is a 6000-count instrument. The Product is battery
powered with a digital display.
Contact Fluke
Fluke Corporation operates worldwide. For local contact information, go to our website:
www.fluke.com
To register your product, view, print, or download the latest manual or manual supplement, go
to our website.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
[phone]
[email protected].

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Safety Information
The Fluke 101 is rated to IEC 61010-1 CAT III 600 V measurement category. See General
Specifications.
A Warning identifies conditions and procedures that are dangerous to the user. A Caution
identifies conditions and procedures that could cause damage to the Product or the
equipment under test.
General Safety Information in the printed Safety Information document that ships with the
Product. It can also be found online at www.fluke.com. More specific safety information is
listed in this manual where applicable.

Digital Multimeter
Instrument Overview
3
Instrument Overview
Terminals
hkm01.tif
Item Description
ACommon (return) terminal for all measurements.
BInput terminal for all measurements.

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Display
Figure 1 and Table 1 show the items on the Product display.
hkm02.tif
Figure 1. Display

Digital Multimeter
Instrument Overview
5
Table 1. Display
Item Description Item Description
AHigh voltage HFrequency is selected
BDisplay Hold is enabled IFarads
CContinuity selected JMillivolts
DDiode test is selected KAmps or volts
EDuty Cycle is selected LDc or ac voltage or current
FDecimal prefix MAuto Range mode is enabled
GOhms is selected NBattery is low and should be changed

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Rotary Switch
hkm06.tif
Figure 2. Rotary Switch

Digital Multimeter
Auto Power Off
7
Table 2. Rotary Switch Functions
Number Description Number Description
A Power down the Product. F Ohms. Push shift for continuity and
diode test.
B AC Volts G Shift. Push for yellow functions.
C DC Volts H Capacitance
D Freeze the display. I Frequency. Push shift for duty cycle.
E AC millivolts
Auto Power Off
The Product automatically powers off after 20 minutes of inactivity.
To restart the Product, turn the rotary switch back to the OFF position and then to a
necessary position.
To disable the Auto Power Off function, hold down the YELLOW button when turning on the
Product, until PoFFshows on the display.

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Measurements
Data Hold
XW Warning
To prevent possible electrical shock, fire or personal injury, do not use the HOLD
function to measure unknown potentials. When HOLD is turned on, the display
does not change when a different potential is measured.
To hold the present reading, push H. Push Hagain to resume normal operation.
Measure AC and DC Voltage
To measure ac and dc voltage:
1. Choose ac or dc by turning the rotary switch to K, L,or G.
2. Connect the red test lead to the Jterminal and the black test lead to the COM
terminal.
3. Measure the voltage by touching the probes to the correct test points of the circuit.
4. Read the measured voltage on the display.

Digital Multimeter
Measurements
9
hkm03.tif
Figure 3. Measure AC and DC Voltage

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Measure Resistance
1. Turn the rotary switch to D. Make sure power is disconnected from the circuit to be
measured.
2. Connect the red test lead to the Jterminal and the black test lead to the COM
terminal.
3. Measure the resistance by touching the probes to the desired test points of the circuit.
4. Read the measured resistance on the display.
Test for Continuity
With the resistance mode selected, push the YELLOW button once to activate the continuity
mode. If the resistance is <70 Ω, the beeper sounds continuously, designating a short circuit.
If the Product reads o, the circuit is open.

Digital Multimeter
Measurements
11
hkm05.tif
Figure 4. Measure Resistance/Continuity

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Test Diodes
1. Turn the rotary switch to D.
2. Push the YELLOW button twice to activate the diode test mode.
3. Connect the red test lead to the Jterminal and the black test lead to the COM
terminal.
4. Connect the red probe to the anode and the black test lead to the cathode of the diode
being tested.
5. Read the forward bias voltage value on the display.
6. If the polarity of the test leads is reversed with diode polarity, the display reading shows
o. This can be used to distinguish the anode and cathode sides of a diode.
Measure Capacitance
1. Turn the rotary switch to c.
2. Connect the red test lead to the Jterminal and the black test lead to the COM
terminal.
3. Touch the probes to the capacitor leads.
4. Let the reading stabilize (up to 18 seconds).
5. Read the capacitance value on the display.

Digital Multimeter
Measurements
13
hkm08.tif
Figure 5. Diode and Capacitance Tests

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Measure Frequency and Duty Cycle
To measure frequency:
1. Turn the rotary switch to I.
2. Connect the red test lead to the Jterminal and the black test lead to COM
terminal.
3. Measure frequency by touching the probes to the correct test points of the circuit.
4. Read the frequency on the display.
To measure duty cycle:
1. Turn the rotary switch to I.
2. Push the YELLOW button to switch to the duty cycle function.
3. Connect the red test lead to the Jterminal and the black test lead to COM
terminal.
4. Measure duty cycle by touching the probes to the correct test points of the circuit.
5. Read the percent of duty cycle on the display.

Digital Multimeter
Measurements
15
hkm04.tif
Figure 6. Measure Frequency/Duty Cycle

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Maintenance
Beyond replacing batteries, do not attempt to repair or service the Product unless you are
qualified to do so and have the relevant calibration, performance test, and service
instructions. The recommended calibration cycle is 12 months.
XW Warning
To prevent possible electrical shock, fire, or personal injury:
•Remove the input signals before you clean the Product.
•Use only specified replacement parts.
•Have an approved technician repair the Product.
For safe operation and maintenance of the Product, repair the Product before use
if the batteries leak.
General Maintenance
Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or
solvents. Dirt or moisture in the terminals can affect readings.