Functional Specifi cations
MPM_DMS-20LCD-23-DCM.D01 Page 1 of 2
DMS-20LCD-2/3 Series
Self-Powered, +50V and +150V LCD Display
2-Wire DC Voltage Monitors
www.murata-ps.com
www.murata-ps.com/support
For full details go to
www.murata-ps.com/rohs
Murata Power Solutions’ DMS-20LCD-2/3-DCM, self-powered, +90V and +150V volt-
age monitors set new standards for quality, performance, size and cost. Simply apply dc
power to the two rear terminals and the unit is fully operational—no additional com-
ponents or connections are required! Their large,
0.37”/9.4mm, LCD displays feature built-in “VDC”
annunciators and can be easily read from 10 feet.
Two models are available: one for +42Vdc nominal
operation (+18.0 to +90.0V range, ‘-2-DCM’), the
other for +120Vdc nominal operation (+50.0 to
+150.0V range, ‘-3-DCM’). Reverse polarity protec-
tion and 0.1V resolution are standard on both models.
Like their +12V (‘-0-DCM’) and +24V (‘-1-DCM’)
counterparts, DMS-20LCD-2/3-DCM meters utilize a
precision analog-to-digital converter and ultra-stable
passive components to achieve excellent perfor-
mance over the wide operating temperature range of
0 to +60°C. A rugged, ABS plastic package provides
excellent protection against shock and vibration.
DMS-20LCD-DCM’s are the most accurate, LCD-
display, dc-voltage monitors available at any price.
FEATURES
Self-powered, 2-wire operation
+18.0 to +90.0Vdc or +50.0 to +150.0Vdc ranges
Ideal for 42V automotive systems and 120V chargers
Reverse polarity protected; 0.1V resolution
Built-in “VDC” annunciator
Large (0.37”/9.4mm) LCD displays
Subminiature 1.38” x 0.88” x 0.66” packages
Rugged, ABS package
Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with each meter
➀ Operation and accuracy at voltages above or below these ranges
are not specifi ed.
➁ Meters are not sealed; Do not expose to moisture or other contaminants.
DMS-20LCD-2-DCM +18.00 to 90.0V dc voltage monitor
DMS-20LCD-3-DCM +50.0 to 150.0V dc voltage monitor
DMS-20-CP Panel cutout punch
DMS-BZL3 Panel mount bezel
DMS-BZL4 Panel mount bezel with sealing gasket
Ordering Information
Input
Voltage Range: ➀
DMS-20LCD-2-DCM +18.0 to +90.0Vdc
DMS-20LCD-3-DCM +50.0 to +150.0Vdc
Max. Current Consumption:
DMS-20LCD-2-DCM 2mA @+50V, 3mA @ +90V
DMS-20LCD-3-DCM 1.5mA @ +100V, 2mA @ +150V
Performance
Sampling Rate 2.5 readings/second
Accuracy @ +25°C:
DMS-20LCD-2-DCM ±0.1V (typ.), ±0.3V (max.)
DMS-20LCD-3-DCM ±0.2V (typ.), ±0.4V (max.)
Temperature Drift (0 to +60°C):
DMS-20LCD-2-DCM ±0.3 counts/°C (max.)
DMS-20LCD-3-DCM ±0.4 counts/°C (max.)
Mechanical
Display Type:
DMS-20LCD-2-DCM 3 digit LCD, 0.37"/9.4mm high
DMS-20LCD-3-DCM 3½ digit LCD, 0.37"/9.4mm high
Weight 0.5 ounce (14 grams)
Case Material ABS
Environmental ➁
Operating Temperature 0 to +60°C
Storage Temperature –20 to +75°C
Humidity (Non-condensing) 0 to 85%
Typical panel mount installation and
suggested wiring (user supplied).
MPM_DMS-20LCD-23-DCM.D01 Page 2 of 2
DMS-20LCD-2/3 Series
Self-Powered, +50V and +150V LCD Display
2-Wire DC Voltage Monitors
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. © 2016 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/
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.
DC
1.30
(33.0)
1.38
(35.1)
0.025
(0.64)
0.880
(22.4)
0.04
(1.016)
0.43
(10.9)
0.66
(16.8)
0.04
(1.016)
0.04
(1.016)
0.37
(9.4)
0.800
(20.3)
0.38
(9.7)
0.25 DIA.
–
+
0.27
(6.9)
0.75
(19.1)
#6-32
UNC THD
0.10
(2.5)
0.19
(4.8)
1.63 (41.4)
1.83 (46.5)
1.28
(32.5)
1.07
(27.2)
0.10
(2.5)
#2-56 INSERT
0.156 (3.96 DEEP)
DMS-BZL3
OPTIONAL BEZEL
