Murata Power Solutions’ ACM20 series AC power meters display the most critical

measurements in mains-powered equipment: voltage, amperage, active power (watts), and

power factor. A front panel selector-switch provides two modes of operation: a fixed reading

of any of the four parameters, or a continuous cycling through all four measurements. An

optional model displays line frequency with 0.1Hz resolution. All ACM20 multi-function

power meters include built-in current transformers—no other user-supplied components

are required.

ACM20 series AC power meters are available in a choice of two input ranges: 0-32A

(with 0.01A resolution, 9999 watts max.); 0-100A (0.1A resolution, 26.4kW max.). An

85-264Vac (47-63Hz) operating supply range makes these power meters perfect for

worldwide power monitoring applications. And, unlike conventional, average-responding

products, ACM20 power meters can accurately display the true-rms voltage and current

values of triangle waves, square waves, and other irregularly shaped waveforms, with an

accuracy of ±1% of full scale.

Their large (0.36"/9.2mm), bright red LED display makes ACM20 AC power meters

easily readable from as far as 15 feet (5 meters). All units are packaged in a one-piece,

vibration resistant, polycarbonate housing that can be installed in vertical ‘0U’ and ‘1U’

rack spaces. Their miniature size is perfect for UPS power sources, power strips, labora-

tory instrumentation, alternative energy applications, and any other products that require

precise monitoring of AC power.

PRODUCT OVERVIEW

FEATURES

or fixed reading

32A or 100A ranges

Actual size

SIMPLIFIED SCHEMATIC DIAGRAM

A

B

85-264 Vac

47-63 Hz

AC/DC

CONVERTER

MICRO-

CONTROLLER

SEL

+5V

+5V

+5V

A/D

CONVERTER

LOAD CURRENT

L1

VOLTS

AMPS

WATTS

PF

ACM20 Series

Four-Function AC Power Meters

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com/dpm

www.murata-ps.com

email: sales@murata-ps.com

08 Oct 2009

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