CM56
CLAMP METER
I
NSTRUCTION
M
ANUAL
MARTINDALE
E L E C T R I C
Trusted by professionals
SAFETY INFORMATION: Always read before proceeding.
WARNING
This manual contains both information and warnings that are necessary for
the safe operation and maintenance of the clampmeter. It is recommended
that you read the instructions carefully and ensure that the contents are fully
understood. Failure to understand and to comply with the warnings and
instructions can result in serious injury, damage or even death.
In order to avoid the danger of electrical shock, it is important that proper
safety measures are taken when working with voltages exceeding 30V AC
rms, 42V AC peak or 60V DC.
The clampmeter must only be used under the conditions and for the
purposes for which it has been constructed. Particular attention should be
paid to these warnings, the precautions, the technical specifications and
the use of the CM56 in dry surroundings.
Always inspect your clampmeter, test leads and accessories for any sign of
damage before use. If any abnormal conditions exist (e.g: broken test
leads, cracked case, display not reading, etc.), do not attempt to use it. Do
not expose it to direct sunlight, excessive temperature or moisture.
Keep this manual for future reference. Updated instructions and
product information are available at: www.martindale-electric.co.uk
SYMBOLS:
Equipment complies with relevant EU Directives
AC (Alternating Current)
Ground
Direct Current
Equipment protected by Double Insulation (Class II)
Caution - refer to accompanying documents
Caution - risk of electric shock
End of life disposal of this equipment should
be in accordance with relevant EU Directives
CONTENTS
1
Introduction
2
1.1
Description
2
1.2
Unpacking & Inspection
4
1.3
Replacing the Battery
4
2
Safety Information
5
3
Operation
6
3.1
Voltage Measurement
6
3.2
Current Measurement
6
3.3
Resistance Measurement
8
3.4
Continuity Testing
8
3.5
Diode Testing
9
3.6
Frequency Measurements
9
4
Maintenance
10
4.1
Cleaning
10
4.2
Repair & Service
10
4.3
Storage Conditions
10
5
Warranty
10
Technical Specifications
1
WARNING
READ "SAFETY INFORMATION" BEFORE USING THE METER
1
2
3
4
5
6
9
8
10
7
2
1. INTRODUCTION
This manual contains information and warnings which must be followed to ensure
safe operation of the clampmeter.
This clampmeter is a handheld 3200-count instrument that is designed for use in
the laboratory, field servicing and any circumstance where high current
measurement is required. The clampmeter incorporates a finger guard which
ensures the safety of the user whilst operating the instrument, a rugged case that
is shock resistant and fire retardant and electronic overload protection for all
functions and ranges. In addition, a protective carrying case is included for
protection of the meter whilst not in use.
1.1 Description
