www.murata-ps.com
DMS-20LCD-2/3 Series
Self-Powered, +50V and +150V LCD Display
2-Wire DC Voltage Monitors
FEATURES
Self-powered, 2-wire operation
+18.0 to +90.0Vdc or +50.0 to +150.0Vdc ranges
for 42V automotive systems and 120V chargers
Ideal
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
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.
Typical panel mount installation and
suggested wiring (user supplied).
Functional Specifications
Input
Voltage Range:
➀
DMS-20LCD-2-DCM
DMS-20LCD-3-DCM
Max. Current Consumption:
DMS-20LCD-2-DCM
DMS-20LCD-3-DCM
+18.0 to +90.0Vdc
+50.0 to +150.0Vdc
2mA @+50V, 3mA @ +90V
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
DMS-20LCD-3-DCM
Weight
Case Material
Environmental
➁
Operating Temperature
Storage Temperature
Humidity (Non-condensing)
Ordering Information
DMS-20LCD-2-DCM
DMS-20LCD-3-DCM
DMS-20-CP
DMS-BZL3
DMS-BZL4
+18.00 to 90.0V dc voltage monitor
+50.0 to 150.0V dc voltage monitor
Panel cutout punch
Panel mount bezel
Panel mount bezel with sealing gasket
3 digit LCD, 0.37"/9.4mm high
3½ digit LCD, 0.37"/9.4mm high
0.5 ounce (14 grams)
ABS
0 to +60°C
– 20 to +75°C
0 to 85%
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 specified.
➁
Meters are not sealed; Do not expose to moisture or other contaminants.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
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
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.
0.025
(0.64)
1.30
(33.0)
0.04
(1.016)
0.04
(1.016)
#6-32
UNC THD
0.04
(1.016)
1.38
(35.1)
–
+
0.38
(9.7)
0.800
(20.3)
0.25 DIA.
0.880
(22.4)
DC
0.37
(9.4)
0.75
(19.1)
0.27
(6.9)
0.43
(10.9)
0.66
(16.8)
#2-56 INSERT
0.156 (3.96 DEEP)
0.19
(4.8)
1.07
(27.2)
DMS-BZL3
OPTIONAL BEZEL
1.28
(32.5)
0.10
(2.5)
1.63 (41.4)
1.83 (46.5)
0.10
(2.5)
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, 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/
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. Specifications are subject to change without
notice.
© 2016 Murata Power Solutions, Inc.
www.murata-ps.com/support
MPM_DMS-20LCD-23-DCM.D01
Page 2 of 2
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