Fluke 70 III 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 70 III Specifications

General

Brand	Fluke
Model	70 III
Category	Multimeter
Language	English

Summary

Safety Information

Important Warning

Warning about false readings, electric shock, or injury from battery issues.

Meter Operation and Features

Input Jacks

Pushbutton Control

Ranging Modes

Automatic Touch Hold Mode

Warning

Do not use Touch Hold on high voltage circuits; it may not capture unstable readings.

Measurement Functions

Voltage Measurement

Demonstrates AC and DC voltage measurements in Volts AC, Volts DC, and Millivolts DC.

Resistance Measurement

Details resistance measurement, requiring power off and capacitor discharge.

Diode Test

Good Diode Test

Explains forward and reverse bias readings for a good diode, including single beep.

Bad Diode Test

Specialized Tests

Continuity Test

Current Measurement Safety

Warning against measuring current with open circuit voltage above meter's rated voltage.

Current Measurement Procedure

Steps for measuring current, including using the 10 A jack and breaking the circuit.

Maintenance and Protection

Maintenance Warnings

Safety precautions for opening the case, using fuses, and handling components.

Internal Fuse Test and Replacement

Internal Fuse Test

Battery and Fuse Replacement

Performance Specifications

Voltage and Millivolt Accuracy

Resistance Accuracy

Current Accuracy

Accuracy specifications for AC/DC current (A) and milliamp (mA) measurements.