DMS-20RM-3-DC2-R-C【PDF 1/4 页】AC VOLTMETER 300V RANGE DC POWER

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www.murata-ps.com

FEATURES

? Measures the rms value of complex ac voltages

? Three input ranges: 20Vac, 200Vac and 300Vac

? Two operating-supply options: 85-264Vac, or +10-40Vdc

? Input circuit fully isolated from operating power supply

? 47-1kHz input frequency range

? Fully encapsulated plastic package measures 1.38” x

0.88” (35mm x 22.4mm)

? Large, easy-to-read, red LED display is visible from 12

feet (4m)

DMS-20RM Series

True-rms ac Voltmeters with Isolated Inputs

Murata Power Solutions’ DMS-20RM series are four-wire, self-contained ac voltmeters

that measure and display the true-rms values of complex ac waveforms. Because the input

circuitry is electrically isolated from the unit’s operating power source, these voltmeters

can measure signals down to zero volts. No external isolation transformers or auxiliary

power supply conditioning components are required. Simply connect the input signal and a

source of operating power (85-264Vac, or an optional +10-40Vdc) to the two rear-mounted

terminal blocks and the unit is fully operational.

DMS-20RM rms voltmeters are available in a choice of three input ranges: 20Vac

(with 0.01V resolution); 200Vac (0.1V resolution); and 0-300Vac (1V resolution). An input

frequency range of 47-1kHz makes these voltmeters ideal for all ac voltage monitoring

applications. And, unlike conventional, average-responding products, these meters can

measure and accurately display the true-rms value of triangle waves, square waves, or

other irregularly shaped waveforms with 0.4% full-scale accuracy.

The large (0.37”/9.4mm), bright red LED display makes the DMS-20RM ac voltmeters

easily readable from as far as 12 feet (4 meters). All units are packaged in a red-?lter case

with a built-in bezel; these meters are fully encapsulated to make them moisture and vibra-

tion resistant. Their miniature size is perfect for high-end consumer electronics, laboratory

instrumentation, alternative power generators and other products requiring precise ac line

monitoring.

TYPICAL WIRING DIAGRAMS

FUSED

AC POWER

SUPPLY

AC POWER

SUPPLY

FUSED

+ 10-40Vdc

- DC POWER

SUPPLY

TB1

TB2

Figure 1B.

TB2

AC VOLTAGE

TO BE MEASURED

Figure 1A.

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com/dpm

AC VOLTAGE

TO BE MEASURED

Figure 2.

email: sales@murata-ps.com

MPM_DMS-20RM.A06 Page 1 of 4

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