Fluke 12B/18 User Manual

English
Page 1
®
12B/18
MultiMeter
Instruction Sheet
P
Read First: Safety Information
To ensure that the meter is used safely, follow these instructions:
• Do not use the meter if the meter or test leads appear damaged, or if
you suspect that the meter is not operating properly.
• Disconnect the live test lead before disconnecting the common test
lead.
• When using the probes, keep your fingers behind the finger guards on
the probes.
• Do not use the Model 12B’s Automatic Selection mode to measure
voltages in circuits that could be damaged by this mode’s low input
impedance (≅2 kΩ).
• Turn off power to the circuit under test before cutting, desoldering, or
breaking the circuit. Small amounts of current can be dangerous.
• Do not apply more than 600V rms between a meter terminal and earth
ground.
• Use caution when working with voltages above 60V dc or 30V ac rms.
Such voltages pose a shock hazard.
WWarning
To avoid false readings, which could lead to possible electric shock
or personal injury, replace the battery as soon as the battery
indicator (U) appears.
PN 602000 June 1996 Rev.3, 1/99
© 1996,1998,1999 Fluke Corporation, All rights reserved. Printed in U.S.A.

Fluke 12B/18 Specifications

General

Brand	Fluke
Model	12B/18
Category	Multimeter
Language	English

Summary

Safety Information

Symbols and Modes

Symbols

Illustrates common symbols used in the instruction sheet.

Automatic Range Selection

Explains the meter's default autoranging feature upon power-up.

Manual Range Selection

Details how to manually select measurement ranges and return to autoranging.

Standby Mode

Describes the meter's auto-off feature to conserve battery life.

Measurement Functions

DC and AC Voltage Measurement

Instructions for measuring DC and AC voltages with different input impedances.

Continuity and Resistance Measurement

Guides for continuity testing and resistance measurements.

Diode Test

Warranty and Liability

Special Measurement Modes

Continuity Capture

How to capture intermittent shorts and opens using Continuity Capture.

Disabling the Beeper

Procedure to disable the meter's beeper for all modes.

MIN MAX Measurement

MIN MAX Recording

Records the lowest and highest measurements, including Input Change Alert.

MIN MAX with Elapsed Time

Records elapsed time alongside minimum and maximum recorded values.

Capacitance Measurement

Automatic Selection Mode

Maintenance and Support

Maintenance

Instructions for cleaning the meter's case.

Battery Replacement

Steps to replace the meter's battery.

Test Lead Replacement

Information on replacing test leads with specific Fluke models.

Service and Parts

Contact information for service and parts.

Specifications

General Specifications

Details on voltage limits, display, operating conditions, and safety ratings.

Accuracy Specifications

Provides accuracy figures for various functions and ranges.

Input Impedance and Protection

Lists overload protection, input impedance, and rejection ratios.

MIN MAX Accuracy

Specifies accuracy and response time for MIN MAX recording.