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True-rms AC Ammeters Are Completely Self-Contained

Sat, 03/28/2009 - 9:25am

ac ammetersMurata Power Solutions has introduced a series of digital AC ammeters with alarm for the measurement and display of complex, true-rms, non-sinusoidal AC currents. The DATEL ACA-20RM-ALM AC Ammeters are completely self-contained and include a built-in current transformer. The integral alarm is triggered when the user-settable over current value is exceeded. The red LED display continually flashes from low to high intensity to indicate an alarm condition. Appropriate for measuring currents in sensitive IT and telecom equipment, the DATEL ACA-20RM-ALM Series comprises two models providing an input range choice of either 0 to 30 A or 0 to 50 A. Both have a resolution of 0.1 A, and the 50 A model features a split core type current transformer that can be clamped around insulated live conductors. Two 50/60 Hz AC power supply options are available, providing a choice of either 85 V to 140 VAC (nominally 120 VAC) or 170 VAC to 264 VAC (nominally 240 VAC). Power consumption is <50 mA. 2kV isolation is specified between the AC supply and the load conductor. The ACA-20RM-ALM Series features full-size 0.37 in. (9.4 mm), three-and-a-half digit, bright LED displays and a built-in bezel / filter assembly with metal fasteners. The operating temperature range is 0°C to +60°C; overall dimensions are 2.1 in. (53.33 mm) x 1.4 in. (35.56 mm); and the panel cut-out dimensions are compatible with the company's DMS-20RM rms-reading AC voltage monitors. Pricing for ACA-20RM-ALM ammeters is $106 in singles and drops to $90 at 100 pieces.

Murata Power Solutions
800-233-2765, www.murata-ps.com

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