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What is a Clamp Meter? Clamp Meters are convenient measuring instruments that allow the measurements of current simply by clamping a wire while being energized without cutting a circuit. In cases of measurement by a Multitester and Digital Multimeters, the circuit must be cut to measure current. In contrast, with a clamp meter, current can be measured simply by clamping a live wire over its sheath. In addition to its simple operation, it allows safe measurement of a higher current (Use a type for higher current measurement such as DCM2000AD) since it is not directly connected to the circuit. Like a Multitester and Insulation Resistance tester, there are analog and digital types of clamp meters. The measuring range is typically about 20A to 200A or 400A both for DC and AC. As a special type, there are products allowing for the measurement of a higher currents of 2000A. Some types are also available to allow measurements of fine current of few milliamps for the purpose of detecting leakage current. Other allow the measurement by true RMS values for measurement of distorted AC waveforms other than of sine waves, for inverter power supply and switching power supply. What are the key points to be considered while choosing a suitable model? 1. What are the objects to be measured? Models to be chosen differ depending on what you intend to measure, AC current, DC current or Leakage current. 2. Measurable conductor sizes: A wide range of sizes are available from 21mm to 53mm in diameter according to measurable conductor sizes and measuring places. 3. Is true RMS measurement required? A clamp meter of the mean-value type cannot provide accurate results in the measurement of an inverter circuit and a motor circuit having many distortions. To make measurements for such circuits, a clamp meter of the true RMS type is required. 4. Other functions: Other types are available featuring a tester function and recorder output function in addition to current measurement. Please refer to Clamp Meter comparative chart available for download by clicking here (in PDF) - Last page It is also available on Pages 45 of our catalog. Our general catalog can be downloaded by clicking here (in PDF) - 3.2 MB or contact us to request a copy. SANWA is a leading handheld manufacturer since 1941 supporting a wide range of products with a world-renowned Japanese quality. Our products have not only the basic functions required for multimeters, but also sophisticated and versatile features realized by our expertise in the software development and ergonomic design. The products we provide range from multimeters to advanced ones which can satisfy specific needs in measurements and recording, even in the field of opto-electronics. With our compact, yet high-performance and beautifully designed products, we hope to satisfy customers in the world.
Traceability: Traceability to prove the compliance with national and international standards is an essential factor for measuring instruments used as test instruments associated with quality assurance. Products of Sanwa are calibrated by reference samples which is periodically checked for its compliance with national standards.
Warranty: All our products come with 12 month manufacturers warranty, so buy with confidence. How to measure using a clamp meter? For measuring current using a clamp meter, clamp one conductor (wire) to be measured. If two wires (parallel lines) are clamped, current measurement cannot be made. Take a measurement at the center of the core of the clamped portion to minimize measuring errors. A line separator is conveniently used in measuring the consumption current of the home electric appliances. There are line separators that can amplify measured current 10 times to allow measurement by amplifying current lower than 1A. When DC current (DCA) is measured using a clamp meter for DC current, the current is indicated in a negative value (-) when the direction of the current is reversed. By using this function, you can know whether your car battery is at the state of charge or discharge. How to measure Leakage current? Unlike ordinary current measurement, it is required to clamp all two wires (two wire-single phase) or three wires (three wire-single phase or three wire-three phase) for measuring leakage current. The earthing wire also can be measured. Are the Clamp Meters with True RMS Measurement available? Yes. A clamp meter of the mean value type detects the mean value of the sine waves in AC measurement, multiplies value 1.11 times (sine wave AC) and indicates the waveform of a distorted wave and the non-sine wave with different form factors in values multiplied 1.11 times, so indication error occur as a result. For these measurements, use a clamp meter of the true RMS type that detects and indicates the true RMS values itself. DCL20R (digital), DCL30DR (digital) - Coming soon. How to measure safely using a Clamp Meter? * Use all clamp meters for measurement of low voltage circuit of 600V or less. * In choosing an appropriate model, special attention should be paid to the current measurement range and diameter of a conductor to be clamped. To request a quote, please contact us at info@bhumika.ca or at +1 (416) 930 2931 If you wish to discuss your application in detail, please contact us to help us understand your requirements and suggest the most appropriate model. All orders are to be
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ISO
9001 Quality Assurance: In November 2002, SANWA ELECTRIC
INSTRUMENT CO., LTD. obtained ISO 9001 certification. (No.
JQA-1453). The certification is given by Japan Quality Assurance
Organization (JQA), which is an authorized member of IQNET, one of
the globally recognized quality assurance organizations. The
certification testifies to our compliance with the International
Quality Assurance Standard. 
CE
Marking: CE marking is a safety mark which can be attached only
on a product meeting the safety requirements of the Directive of
Council of European Union (EC Directive). A product attached with
the CE mark is designed so as to meet the requirements of the "Low
Voltage Directive" and the "EMC Directive" of the EC Directive.