AC Ammeters feature built-in current transformers.

Press Release Summary:




Available in 5 models, ACA-20RM Series provides direct measurement of true-RMS values of non-sinusoidal ac currents from 2-50 A. Self-powered, single-board modules offer choice of either 120 or 220 V nominal operation. Consuming less than 50 mA and operating from 0-60°C, meters include red LED displays with 0.37 in. high characters, precision auto-zeroing circuitry, RMS-to-DC converter circuit, and built-in bezel/filter assembly with metal fasteners.



Original Press Release:



New ACA-20RM Series World's First True-RMS Responding AC Ammeters With Built-In Current Transformers (CTs)



Five models provide current measurement from 0 to 50A
Large easy-to-read red LED display
Choice of either 120V or 220V (nominal) operation

April 2008, Mansfield, Massachusetts
Murata Power Solution's new Datel ACA-20RM series are the world's first true-RMS responding digital AC ammeters with built-in current transformers (CTs). They are able to provide direct measurement of the true-RMS values of complex, non-sinusoidal AC currents of between 2A and 50A. Ideal for use in the latest computer and telecom equipment, the compact, self-powered, single-board modules feature a large, easy-to-read LED display and provide an ideal replacement for older, less reliable, analog panel meters.

The Datel ACA-20RM series comprises five models with current ranges of: 0 - 0.2A (0.1mA resolution), 0-2A (0.001A resolution), 0 - 20A (0.01A resolution), 0-30A (0.1A resolution), and 0 - 50A (0.1A resolution). The modules are self-powered with both 120V (85-140VAC) and 220V (170-264VAC) versions available. Power consumption is less than 50mA.

The on-board, miniature, high-turns ratio CTs provide an accurate and straightforward way to measure AC load currents. The 50A model features an over-sized split core transformer to ease installation and accommodate wires up to 4AWG (21.1mm2). All Datel ACA-20RM series True-RMS-AC Ammeters utilize low power consumption, bright red LED displays with easy-to-read full-size 0.37in. (9.4mm) high characters.

The completely self-contained design of the modules enhances reliability and means that no external components are required. Precision auto-zeroing circuitry, super-stable components and an RMS-to-DC converter circuit combine to give the Datel ACA-20RM series excellent performance.

A built-in bezel / filter assembly with metal fasteners allows straightforward assembly of the new Ammeters into customer applications. All models use UL and CSA recognized components and have overall dimensions of 1.826in. (46.38mm) X 1.280in. (32.51mm). Operating temperature range is 0ºC to +60ºC.

About Murata Power Solutions
Murata Power Solutions (www.murata-ps.com), is headquartered in Mansfield, Massachusetts, with over 1,300 employees, and locations in the USA, Canada, Mexico, England, France, Germany, Tokyo and China. Murata Power Solutions designs, manufactures and distributes DC/DC Converters, AC/DC Power Supplies, Magnetics, Data Acquisition devices and Panel Meters, and offers these products in custom, standard and modified-standard variations. These products, which are built to exacting requirements in ISO9000:2000-approved facilities, are typically used worldwide within telecommunications, computing, industrial and other high-tech applications.

About Murata
Based in Kyoto Japan, Murata Manufacturing Company Ltd is one of the world's leading providers of ceramic based components, sensors, and AC/DC and DC/DC power solutions. Founded in 1950, the company has over 26,000 employees worldwide, and over $4.9 billion US in consolidated annual sales (as of March 31, 2007). Everywhere in the world, wherever you can reach, Murata's electronic components are always at work. For more information about Murata, visit www.murata.com

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