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Summary of Contents for Martindale Electric CM55
- Page 1 CM55 AC CLAMP METER nstructIon anual...
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Page 2: Table Of Contents
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 +44 (0)1923 441717 and support@martindale-electric.co.uk CONTENTS Safety Information Meaning of Symbols and Markings Precautions... -
Page 3: Safety Information
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. -
Page 4: Precautions
(Measurement Category IV) is applicable to test and CAT IV measuring equipment connected at the source of the building’s low-voltage MAINS installation. For further information on measurement categories see page 14 or visit www.martindale-electric.co.uk/measurement_categories. Equipment complies with relevant directives Equipment complies with relevant UK Conformity Assessed marking End of life disposal of this equipment should be in accordance with relevant directives... - Page 5 Always check the unit’s specified limits before use. If the clamp meter is used in a manner not specified by Martindale Electric, the protection provided by the clamp meter may be impaired. As a clamp meter or multimeter the unit must only be used on CAT III and CAT II installations up to 600V to earth, and within the operating temperature and humidity range specified.
- Page 6 When this unit is used in combination with test leads, the measurement category of the combination is the lower measurement category of either this unit or the test leads used. Likewise if test lead accessories such as crocodile clips are also used, the measurement category will be the lowest measurement category in that combination.
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Page 7: Introduction
Examine the shipping carton for any sign of damage. Inspect the unit and any accessories for damage. If there is any damage then consult your distributor immediately. 2.2 Description The Martindale CM55 has the following measurement functions: • AC current to 400A •... -
Page 8: Operation
3. OPERATION 3.1 General If the clamp meter displays OL then the measurement limits of the range have been exceeded. 3.2 Low Battery Indication If the symbol is displayed, the batteries need replacing as measurement accuracy can no longer be guaranteed (see section 4.1 Battery Replacement). -
Page 9: Description Of Press Buttons
3.4 Description of Press Buttons Selects display hold HOLD 3.5 Description of LCD Symbols Indicates low battery Indicates auto ranging AUTO Display hold is activated HOLD Auto power off is activated Units of measurement being displayed Ω A, V, Indicates AC measurement Indicates DC measurement Continuity function is selected 3.6 Auto Power Off... -
Page 10: Display Hold
3.7 Display Hold To hold a displayed value, press the HOLD button. The LCD will display HOLD. Press again to exit display hold. 3.8 Use of the TL16 Test Leads Before use, always check the continuity of the test leads. Where access to test points may require extended probe tips, the probe tip caps may be removed by gently pulling them forward until they unclip from the probe body. -
Page 11: Ac Voltage Measurements
3.10 AC Voltage Measurements 1. Connect the black test lead to the terminal and the red test lead to terminal. 2. Set the rotary switch to the position. 3. Taking all necessary safety precautions connect the test leads to the circuit being measured and read the measured ac voltage from the display. -
Page 12: Maintenance
4. MAINTENANCE 4.1 Battery Replacement To avoid shock or injury, disconnect the clamp meter from any external circuits and remove the test leads before proceeding. Figure 2 Referring to figure 2, the battery compartment is underneath the unit and can be accessed by removing the screw and lifting off the cover. Fit 2 new 1.5V, AAA alkaline batteries (IEC LR03, NEDA 24A) observing correct polarity. -
Page 13: Calibration
4.3 Calibration To maintain the integrity of measurements made using your instrument, Martindale Electric recommends that it is returned at least once a year to an approved Calibration Laboratory for recalibration and certification. Martindale Electric is pleased to offer you this service. -
Page 14: Storage Conditions
4.6 Storage Conditions The instrument should be kept in warm dry conditions away from direct sources of heat or sunlight, and in such a manner as to preserve the working life of the unit. It is strongly advised that the unit is not kept in a tool box where other tools may damage it. -
Page 15: Warranty
5. WARRANTY AND LIMITATION OF LIABILITY This Martindale product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is 2 years and begins on the date of receipt by the end user. This warranty extends only to the original buyer or end-user customer, and does not apply to fuses, disposable batteries, test leads or to any product which, in Martindale’s opinion, has been misused, altered, neglected, contaminated,... -
Page 16: Measurement Categories
MEASUREMENT CATEGORIES CAT Ratings Stay safe - Match your test BS EN61010-1 Installation Categories equipment safety rating to the (CAT ratings) define the risks from installation category. hazardous transient impulses and potentially lethal short circuit currents CAT II: Socket outlets and similar on the mains supply system based on points of the mains installation. -
Page 17: Specifications
Specification CM55 AC Clamp Meter ELECTRICAL All specified accuracies are at 23°C ± 5°C, <80% RH for 1 year. Temperature coefficient: add 0.1 x (specified accuracy) per °C. (0°C to 18°C, 28°C to 40°C). All accuracies below are expressed as ±... - Page 18 Specification CM55 AC Clamp Meter AC Current Accuracy Range Resolution (50 to 60Hz) (60 to 400Hz) 0.01A 1.9% + 3 3.0% + 5 400A 0.1A Overload protection: 660A DC or AC rms Resistance and Continuity Open circuit Audible Range Resolution...
- Page 19 Specification CM55 AC Clamp Meter ENVIRONMENTAL Location: Indoor use only, or outdoor use in dry weather conditions Temperature & Humidity: (Operating): 0°C to 40°C <80% R.H., non-condensing (Storage): -10°C to 60°C < 70% R.H., batteries removed Altitude: up to 2000m...
- Page 20 Ver. D1.0 Due to policy of continuous development, Martindale Electric reserves the right to alter equipment specification and description outlined in this document without prior notice. No part of this document shall be deemed to be part of any contract for the equipment unless specifically referred to as an inclusion within such contract.
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