DMS-20RM-3-DC2-R-C Murata Power Solutions Inc, DMS-20RM-3-DC2-R-C Datasheet

AC VOLTMETER 300V RANGE DC POWER

DMS-20RM-3-DC2-R-C

Manufacturer Part Number
DMS-20RM-3-DC2-R-C
Description
AC VOLTMETER 300V RANGE DC POWER
Manufacturer
Murata Power Solutions Inc
Type
Voltmeterr
Series
DMS-20RMr
Datasheet
1.DMS-20RM-2-AC1-R-C.pdf (4 pages)

Specifications of DMS-20RM-3-DC2-R-C

Display Type
LED
Measuring Range
0 ~ 300VAC
Display Style
Red Characters, Black Background
Display Face Size
1.30" L x 0.80" W (33.0 x 20.3mm)
Display Digits
3.5
Display Digits - Height
0.370" (9.40mm)
Backlight
Without
Mounting Type
Panel Mount
Termination
Terminal Block
Voltage - Supply
10 ~ 40VDC
Equipment Type
AC Voltmeter
Input
300 V
Dimensions
35.1 mm L x 22.4 mm W x 51.1 mm H
Mounting Style
Panel
Primary Voltage Rating
10 V to 40 V
Secondary Current Rating
10 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
811-1989
FEATURES
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TYPICAL WIRING DIAGRAMS
Powered by AC supply while measuring separate AC signal.
www.murata-ps.com
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)
TB1
www.murata-ps.com/rohs
A
For full details go to
B
TB2
Figure 1A.
　
AC VOLTAGE
TO BE MEASURED
FUSED
AC POWER
SUPPLY
Powered by and measuring the same AC power source.
www.murata-ps.com/dpm
TB1
Figure 1B.
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.
(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.
easily readable from as far as 12 feet (4 meters). All units are packaged in a red-fi 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.
A
Murata Power Solutions’ DMS-20RM series are four-wire, self-contained ac voltmeters
DMS-20RM rms voltmeters are available in a choice of three input ranges: 20Vac
The large (0.37”/9.4mm), bright red LED display makes the DMS-20RM ac voltmeters
B
TB2
True-rms ac Voltmeters with Isolated Inputs
FUSED
AC POWER
SUPPLY
Powered by DC power supply while measuring AC signal.
DMS-20RM Series
15 Mar 2011 MPM_DMS-20RM.A05 Page 1 of 4
TB1
A
B
TB2
Figure 2.
email: sales@murata-ps.com
AC VOLTAGE
TO BE MEASURED
+
-
FUSED
10-40Vdc
DC POWER
SUPPLY

DMS-20RM-3-DC2-R-C Summary of contents

Page 1

... 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 ...

Page 2

... Vac DMS-20RM-1-DC2-R-C 60 1000 Hz DMS-20RM-2-DC2-R-C DMS-20RM-3-DC2-R-C 2.5 reading per second A DMS-BZL4-C bezel assembly with sealing gasket is supplied with each meter. ±0.4%FS ±2 counts with 60Hz sine wave input IMPORTANT! voltmeters must be installed and serviced by qualifi ed technical personnel. ±0.2 ±0.4 Counts/º ...

Page 3

... FRONT VIEW www.murata-ps.com/dpm DMS-20RM Series 2.01 (51.1) 1.00 (25.4) 0.800 0.040 (20.3) (1.02) 0.880 (22.4) 1.600 (40.6) BACK VIEW A TB1 - Power Supply CAL. CAL. CAL. TB2 - Input Signal email: sales@murata-ps.com 15 Mar 2011 MPM_DMS-20RM.A05 Page ...

Page 4

... Following the four-step sequence shown in Figure 3 — being careful not to apply excessive force or twisting motions — insert the DMS-20RM into the panel opening. When using the DMS-BZL4-C, install its sealing gasket positioned between the voltmeter’s front fl ange and panel front surface (see Mechanical Specifi ...