DMS-20PC-1-LM-C Datasheet DMS-20PC-1-LM-C, DMS-20PC-1-LM-F-C | P1-P2

Murata Power Solution's DMS-20PC-1-LM is a component-size, self-contained, low-cost

ac voltmeter for true line measurements. It requires no additional components or auxiliary

power. Simply plug it into any wall outlet and instantly read voltages from 85 to 264Vac

(47-63Hz). The large (0.37"/9.4mm), bright red, blue or green LED display makes the

DMS-20PC-1-LM easily readable under any lighting conditions.

DMS-20PC-1-LM employs half-wave

sinusoidal averaging (rms calibrated) and has

a display resolution of 1Vac over its full input

range. Packaged in a red-ﬁ lter case with built-

in bezel, the meter is fully encapsulated for

ruggedness. All units are overvoltage protected

to 300Vac.

This low-cost meter is ideal for industrial,

laboratory, ofﬁ ce and ﬁ eld-service applica-

tions. Its miniature size is perfect for design

into high-end consumer electronics, laboratory

instrumentation and other products requiring

accurate ac line monitoring

➀ Operation and accuracy at inputs above or below these ranges are not speciﬁ ed.

DMS-20PC-1-LM-C Red LED with threaded standoffs ➁

DMS-20PC-1-LM-B-C Blue LED with threaded standoffs ➁

DMS-20PC-1-LM-G-C Green LED with threaded standoffs ➁

DMS-20PC-1-LM-F-C Red LED with blade terminals

DMS-20PC-1-LM-BF-C Blue LED with blade terminals

DMS-20PC-1-LM-GF-C Green LED with blade terminals

DMS-20-CP Optional panel cutout punch

DMS-BZL3-C Optional panel mount bezel

DMS-BZL4-C Optional panel mount bezel with sealing gasket

➁ Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with meter.

US E156931

Ordering Information

Functional Speciﬁ cations

Input

Voltage Range ➀ 85-264Vrms

Overvoltage Protection 300Vrms

(Overvoltage category II)

Frequency Range ➀ 47-63Hz

Current Consumption 50mArms (max.)

Performance

Sampling Rate 2.5 readings/second

Measurement Type Half-wave average, rms

calibrated for sinusoidal input

Accuracy @ +25°C ±1V (typ.), ±2V (max.)

Temperature Drift

(–25 to +60°C) ±0.15 Volts/°C (max.)

Mechanical

Dimensions 1.38" x 0.88" x 1.00"

Display Type 3 digit, red LED, 0.37"/9.4mm

Weight 1 ounce (28 grams)

Case Material Polycarbonate

6-32 screw torque 6-8 in-lb (0.7 – 0.9N-m)

Environmental

Operating Temperature –25 to +60°C

Storage Temperature –40 to +75°C

Humidity (Non-condensing) 0 to 95%

FUSED

AC POWER

SUPPLY

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com

www.murata-ps.com/support

DMS-20PC-1-LM

Self-Powered 3 Digit, LED Display

AC Line Voltage Monitors

MPM_DMS-20PC-1-LM.C07 Page 1 of 2

FEATURES

■

Plugs directly into USA-style wall outlets

■

Screw terminals for panel mounting

■

Small 1.38" x 0.88" x 1.0" packages

■

Large, easy-to-read, red, blue or green LED displays

■

Fully encapsulated for harsh environments

■

Half-wave averaging, rms calibrated

■

UL, CSA and IEC1010-1 certiﬁ ed

■

Very low cost!

DMS-20PC-1-LM-F

(Blade Terminals)

DMS-20PC-1-LM

(Panel Mount)

Suggested wiring (user supplied)

Typical Connection Diagram

US E156931

Dimensions in inches (millimeters)

Tolerances: 2 PL Dec ±0.02 (±0.51)

3 PL Dec ±0.010 (±0.254)

Recommended panel cutout dimensions:

1.336 (33.93)W × 0.838 (21.29)H

Internal corner radii 0.032 (0.81) Max.

DMS-20PC-1-LM

®®

0.75

(19.1)

#6-32

UNC THD

0.44

(11.2)

0.80

(20.3)

0.32

(8.1)

0.04

(1.016)

0.88

(22.4)

1.00

(25.4)

0.04

(1.016)

0.04

(1.016)

1.30

(33.0)

1.38

(35.1)

0.19

(4.8)

1.28

(32.5)

0.10

(2.5)

1.07

(27.2)

0.10

(2.5)

#2-56 INSERT

0.156 (3.96) DEEP

1.63 (41.4)

1.83 (46.5)

0.37

(9.4)

DMS-BZL3-C

Optional Bezel

Power Supply Polarity, Fusing, Wiring, and Grounding: DMS-20PC-1-LM’s

two ac-supply terminals are not polarity sensitive, that is, they have no “AC LO”

or “AC HI” designations. These units do not include nor require a connection to

earth/chassis ground.

All ac-supply wiring must be rated for the voltages and currents they will

conduct and comply with any code or application-mandated requirements

pertaining to the user’s speciﬁ c installation. 300V UL rated wire suitable for the

intended application is required.

DMS-20PC-1-LM ac voltmeters are not internally fused. The rear threaded

standoff input-terminals are to be used only for powering the volt meter’s

internal circuitry; they must not be used to supply power to external loads.

Except for plug-in models with blade terminals, which must be protected by an

external system circuit breaker or fuse, the supply wires feeding these voltme-

ters must be fused with a 0.25A/250V time delay/time lag fuse, in accordance

with applicable regulatory codes.

The recommended wire size is 16AWG to 20AWG (1.31mm

to 0.52mm

)

stranded copper wire. Wires must be properly stripped and attached to the

threaded standoffs such that their insulation is not pinched by the supplied

6-32 screws. Rated tightening torque for the 6-32 screws is 7 to 8 pound-

inches (0.8 to 0.9N-m).

Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other

technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply

the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speciﬁ cations are subject to change without

www.murata-ps.com/support

Murata Power Solutions, Inc.

11 Cabot Boulevard, Mansﬁ eld, MA 02048-1151 U.S.A.

ISO 9001 and 14001 REGISTERED

DMS-20PC-1-LM

Self-Powered 3 Digit, LED Display

AC Line Voltage Monitors

MPM_DMS-20PC-1-LM.C07 Page 2 of 2

P1-P2

DMS-20PC-1-LM-C

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Description:

2-WIRE METER 85-264VAC RED LED

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DMS-20PC-1-LM-C

DMS-20PC-1-LM-C

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