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DMS-20PC-3-DCM
+2 to +11Vdc, Self-Powered LED Display,
DC Voltage Monitor
MPM_DMS_20PC_3_DCM.C01 Page 1 of 2
Murata Power Solutions' DMS-20PC-3-DCM self-powered dc voltage monitor is perfect
for precision monitoring of all low-voltage power supplies. Simply connect a positive dc
voltage across its two rear terminals and the meter is fully operational with no additional
components required! A measurement resolution of 0.01Vdc enables precise adjustment
of power supply outputs. The large, 0.37"/9.4mm, bright
red, LED display, unlike most LCD’s, can be easily read from
15 feet away under virtually any lighting conditions. Built-in
reverse polarity protection assures quick, trouble-free instal-
lation.
The DMS-20PC-3-DCM utilizes a high-resolution, 3 digit
analog-to-digital converter and precision metal-fi lm resis-
tors to achieve outstanding performance over its operating
temperature range of –25 to +60°C. A rugged, epoxy-
encapsulated, polycarbonate case provides excellent protec-
tion against moisture, shock and vibration.
The DMS-20PC-3-DCM uses the same panel cutout
dimensions as all DMS-20 Series panel voltmeters and moni-
tors; this feature assures uniform displays in multiple-meter
applications.
FEATURES
Self-powered, only two connections required
+2.00 to +11.00Vdc input range
0.01V resolution; ±0.05% accuracy
Ideal for low-voltage (3.3V) power supply monitoring
Digital replacement for analog panel meters
0.37"/9.4mm, bright red, LED display
Subminiature 1.38" x 0.88" x 1.0" package
Super reliable, epoxy-encapsulated construction
Reverse polarity protected
–25 to +60°C temperature range
Low power consumption
Ordering Information
Functional Specifi cations
DMS-20PC-3-DCM-C +2.00 to +11.00V dc voltage monitor
DMS-20-CP-C Panel cutout punch
DMS-BZL3-C Panel mount bezel assembly
DMS-BZL4-C Panel mount bezel with sealing gasket
Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with each meter
➀ Operation and accuracy at inputs above or below this range
are not specifi ed.
Input
Voltage Range ➀ +2.00 to +11.00Vdc
Current Consumption
@Vin = 2/3/5/9Vdc 55/30/17/10mA (max.)
Reverse Polarity Protection 15V (max.)
Performance
Sampling Rate 2.5 readings/second
Resolution 0.01V
Accuracy @ +25°C ±0.01V (typ.), ±0.02V (max.)
Temperature Drift
(–25 to +60°C) ±0.3 counts/°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%
Typical panel mount installation and
suggested wiring (user supplied)
www.murata-ps.com/support
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
notice. © 2015 Murata Power Solutions, Inc.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfi eld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
MECHANICAL SPECIFICATIONS
DMS-20PC-3-DCM
+2 to +11Vdc, Self-Powered LED Display,
DC Voltage Monitor
MPM_DMS_20PC_3_DCM.C01 Page 2 of 2
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-BZL3
Optional Bezel
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-20PC-3-DCM
