Fluke III Series - User Manual

70/73 English Instruction Sheet
Page 1
®
70/73
Series III Multimeter
Instruction Sheet
W Read First: Safety Information
To ensure that the meter is used safely, follow these instructions:
• Never use the meter if the meter or test leads look damaged.
• Be sure the test leads and rotary switch are in the correct
position for the desired measurement.
• Never measure resistance in a circuit when power is applied.
• Never touch the probes to a voltage source when the test
leads are plugged into the 10 A or 300 mA input jack.
• To avoid damage or injury, never use the meter on circuits that
exceed 4800 volt-amps.
• Never apply more than the rated voltage between any input
jack and earth ground.
• Be careful when working with voltages above 60 V dc or 30 V
ac rms. Such voltages pose a shock hazard.
• Keep your fingers behind the finger guards on the test probes
when making measurements.
Warning
To avoid false readings, which could lead to
possible electric shock or personal injury, replace
the battery as soon as the battery indicator (N)
appears.
Symbols
W
Read First: Safety Information
Z
Manual Range or Automatic Touch Hold mode
T
Double Insulation
CAT II
Overvoltage Installation Category per IEC 1010-1.
Typical CAT II locations include main wall outlets,
local appliances, and portable equipment.
PN 650454 August 1997 Rev.2, 2/98

1997, 1998 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.

Fluke III Series Specifications

General

Model	Fluke III Series
Category	Multimeter
Display	LCD
Diode Test	Yes
DC Voltage Range	0.1 mV to 1000 V
AC Voltage Range	0.1 mV to 750 V
Continuity	Yes
Digits	3.5

Summary

Read First: Safety Information

Warning

Crucial safety advice for avoiding false readings and potential injury.

Symbols

Explanation of common symbols used for safe operation.

Input Jacks

Pushbutton

Autorange

Manual Range

Automatic Touch Hold Mode

Warning

Critical safety warning against using Touch Hold for dead circuit verification.

Note

Stray voltages can affect readings in Touch Hold mode.

Bar Graph

Standby Mode

AC and DC Voltage Measurement

Resistance Measurement

Diode Test

Continuity Test

Current Measurement

Warning

Essential safety warning for current measurements and fuse protection.

Holster

Maintenance

Warning

Safety warning on test leads, case closure, and fuse usage.

Caution

Cautionary note on handling components and avoiding static damage.

Internal Fuse Test

Battery and Fuse Replacement

Note

Important note on safety precautions before opening the meter case.

Cleaning

Service and Parts

Specifications