CM79
TRMS AC/DC CLAMP METER
I
NSTRUCTION
M
ANUAL
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ALWAYS READ THESE INSTRUCTIONS BEFORE PROCEEDING
Thank you for buying one of our products. For safety and a full understanding of its benefits
please read this manual before use. Technical support is available from 01923 441717 and
CONTENTS
1
Safety Information
1
1.1
Meaning of Symbols and Markings
1
1.2 Precautions
2
2 Introduction
5
2.1 Inspection
5
2.2 Description
5
2.3
Accessories
5
2.4
Battery Installation
5
3 Operation
6
3.1 General
6
3.2
Low Battery Indication
6
3.3
Description of Clamp Meter Elements
6
3.4 Description
of
Press
Buttons
7
3.5 Description
of
LCD
Symbols
7
3.6
Auto Power Off
7
3.7 Backlight
8
3.8 Display
Hold
8
3.9 Zero
Function
8
3.10 Min/Max
Function
8
3.11
Use of the TL16 Test Leads
9
3.12 AC
Current
Measurements
9
3.13 DC
Current
Measurements
10
3.14 AC
Voltage
Measurements
10
3.15 DC
Voltage
Measurements
10
3.16
Resistance Measurements and Continuity Testing
11
4 Maintenance
12
4.1
Battery Replacement
12
4.2 Test
Lead
Replacement
12
4.3
Calibration
13
4.4 Cleaning
13
4.5 Repair
&
Service
13
4.6 Storage
Conditions
14
5 Warranty
15
Measurement
Categories
17
Specifications
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1. SAFETY INFORMATION: Always read before proceeding.
REMEMBER: SAFETY IS NO ACCIDENT
These instructions contain both information and warnings that are necessary
for the safe operation and maintenance of this product. 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.
Particular attention should be paid to the Warnings, Precautions and Technical
Specifi cations.
Please keep these instructions for future reference. Updated instructions and
product information are available at: www.martindale-electric.co.uk
1.1 Meaning of Symbols and Markings
Caution - risk of danger & refer to instructions
Caution - risk of electric shock
Equipment protected by double or reinforced insulation
(Class II)
Application around and removal from hazardous live
conductors is permitted.
CAT II
(Measurement Category II)
is applicable to test and measuring
equipment connected directly to utilization points (socket outlets
and similar points) of the low-voltage MAINS installation.
CAT III
(Measurement Category III)
is applicable to test and measuring
equipment connected to the distribution part of the building’s low-
voltage MAINS installation.
CAT IV
(Measurement Category IV)
is applicable to test and measuring
equipment connected at the source of the building’s low-voltage
MAINS installation.
1
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2
For further information on measurement categories see page 17 or visit
www.martindale-electric.co.uk/measurement_categories.php
Equipment complies with relevant EU Directives
End of life disposal of this equipment should be in
accordance with relevant EU Directives
1.2 Precautions
This product has been designed with your safety in mind, but
please pay attention to the following warnings and cautions before
use.
Warnings
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.
Where applicable other safety measures such as the use of
protective gloves, goggles etc. should be employed.
The clamp meter must only be used by a skilled and competent
person who is familiar with the relevant regulations, the safety risks
involved and the consequent normal safe working practices, and
under the conditions and for the purposes for which it has been
constructed and specified.
Before each use the clamp meter and any associated test leads
and accessories should be examined for damage, cracks, cuts or
scratches.
Do not use
if damaged in any way.
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