USER MANUAL
FLIR True RMS 400A Clamp Meter Series
Models CM42, CM44, and CM46
Table of Contents
1. DISCLAIMERS
1.1 Copyright
1.2 Quality Assurance
1.3 Documentation
1.4 Disposal of Electronic Waste
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2. SAFETY
3. INTRODUCTION
4. DESCRIPTION
4.1 Meter Parts
4.2 Function Switch Positions
4.3 Function Buttons
4.4 Display Icons and Indicators
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5. OPERATION
5.1 Powering the Meter
5.2 Intelligent Auto Power OFF (APO) feature
5.3 Auto Range
5.4 Out-of-range Warning
5.5 Voltage Measurements
5.6 Electric Field (EF) Detection
5.7 Standard Current Clamp Measurements
5.8 Low Current Accu-Tip
TM
Clamp Measurements
5.9 DC
A
Current Test Lead Measurements (CM44 and CM46)
5.10 Resistance Measurements
5.11 Continuity Tests
5.12 Capacitance Measurements (CM44 and CM46)
5.13 Temperature Measurements (CM44 and CM46)
5.14 Diode Tests
5.15 Relative / DC Zero Modes (CM44 and CM46)
5.16 MIN/MAX/AVG Recording
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5.17 VFD Mode (low pass filter)
5.18 Display Hold Function
5.19 Display Backlighting
5.20 PEAK Mode (CM44 and CM46)
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6. MAINTENANCE
6.1 Troubleshooting Tips
6.2 Accuracy and Calibration
6.3 Cleaning and Storage
6.4 Battery Replacement
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7. SPECIFICATIONS
7.1 General specifications
7.2 Electrical specifications
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8. TECHNICAL SUPPORT
9. WARRANTY
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1. Disclaimers
1.1 Copyright
© 2016, FLIR Systems, Inc., All rights reserved worldwide.
No parts of the software
including source code may be reproduced, transmitted, transcribed or translated into
any language or computer language in any form or by any means, electronic, magnetic,
optical, manual or otherwise, without the prior written permission of FLIR Systems.
The documentation must not, in whole or part, be copied, photocopied, reproduced,
translated or transmitted to any electronic medium or machine readable form without
prior consent, in writing, from FLIR Systems.
Names and marks appearing on the products herein are either registered trademarks or
trademarks of FLIR Systems and/or its subsidiaries. All other trademarks, trade names or
company names referenced herein are used for identification only and are the property
of their respective owners.
1.2 Quality Assurance
The Quality Management System under which these products are developed and
manufactured has been certified in accordance with the ISO 9001 standard.
FLIR Systems is committed to a policy of continuous development; therefore, we reserve
the right to make changes and improvements on any of the products without prior
notice.
1.3 Documentation
To access the latest manuals and notifications, go to the Download tab at:
http://support.flir.com. It only takes a few minutes to register online. In the download
area you will also find the latest releases of manuals for our other products, as well as
manuals for our historical and obsolete products.
1.4 Disposal of Electronic Waste
As with most electronic products, this equipment must be disposed of in an
environmentally friendly way, and in accordance with existing regulations
for electronic waste.
Please contact your FLIR Systems representative for more details.
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2. Safety
SAFETY NOTES
This user manual contains information and warnings that must be followed for operating the
instrument safely and maintaining the instrument in a safe operating condition. If the instrument is
used in a manner not specified by the manufacturer, the protection provided by the instrument
may be impaired.
The meter protection rating, against the users, is double insulation per UL/IEC/EN61010-1 Ed. 3.0,
IEC/EN61010-2-033 Ed. 1.0, CAN/CSA C22.2 No. 61010-1 Ed. 3.0, IEC/EN61010-2-032 Ed. 3.0 &
IEC/EN61010-031 Ed. 1.1: Measurement Category III 600V & Category IV 300V AC & DC.
BRIEF INFORMATION ABOUT MEASUREMENT CATEGORIES
Measurement Category IV
is applicable to test and measuring circuits connected at the source of the building’s
low-voltage MAINS installation. Examples are measurements on devices installed before the main fuse or
circuit breaker in the building installation.
Measurement Category III
is applicable to test and measuring circuits connected to the distribution part of the
building’s low-voltage MAINS installation. Examples are measurements on distribution boards (including
secondary meters), circuit-breakers, wiring, including cables, bus-bars, junction boxes, switches, socket-outlets
in the fixed installation, and equipment for industrial use and some other equipment such as stationary motors
with permanent connection to the fixed installation.
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. Examples are measurements on
MAINS CIRCUITS of household appliances, portable tools and similar equipment.
TERMS USED IN THIS MANUAL
WARNING
to the user.
CAUTION
instrument.
Identifies conditions and actions that could result in serious injury or even death
Identifies conditions and actions that could cause damage or malfunction in the
WARNING STATEMENTS
To reduce the risk of fire or electric shock, do not expose this product to rain or moisture. The
meter is intended only for indoor use.
To avoid electrical shock hazard, observe the proper safety precautions when working with
voltages above 60 VDC or 30 VAC rms. These voltage levels pose a potential shock hazard to the
user. Before and after hazardous voltage measurements, test the voltage function on a known
source such as line voltage to determine proper meter functioning.
Keep hands/fingers behind the hand/finger barriers (of the meter and the test leads) during
measurement. Inspect test leads, connectors, and probes for damaged insulation or exposed metal
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