Murata DMS-20LCD-3-DCM Self-powered, 50v and 150v lcd display 2-wire dc voltage monitor Datasheet

DMS-20LCD-2/3 Series
Self-Powered, +50V and +150V LCD Display
2-Wire DC Voltage Monitors
FEATURES
N
Self-powered, 2-wire operation
N
+18.0 to +90.0Vdc or +50.0 to +150.0Vdc ranges
N
Ideal for 42V automotive systems and 120V chargers
N
Reverse polarity protected; 0.1V resolution
N
Built-in "VDC" annunciator
N
Large (0.37"/9.4mm) LCD displays
N
Subminiature 1.38" x 0.88" x 0.66" packages
N
Rugged, ABS package
Functional Specifications
Input
Voltage Range: ~
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 
Operating Temperature
Storage Temperature
Humidity (Non-condensing)
DATEL’s DMS-20LCD-2/3-DCM, self-powered, +90V and +150V voltage 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 components 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
protection 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 performance 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).
Ordering Information
3 digit LCD, 0.37"/9.4mm high
3½ digit LCD, 0.37"/9.4mm high
0.5 ounce (14 grams)
ABS
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
Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with each meter
0 to +60°C
– 20 to +75°C
0 to 85%
~ Operation and accuracy at voltages above or below these ranges
are not specified.
 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
Technical enquiries email: [email protected], tel: +1 508 339 3000
MPM_DMS-20LCD-23-DCM_B02 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)
0.04
(1.016)
+
–
0.38
(9.7)
DATEL
#6-32
UNC THD
1.38
(35.1)
0.880
(22.4)
0.800
(20.3)
DC
0.37
(9.4)
0.25 DIA.
0.43
(10.9)
0.27
(6.9)
0.75
(19.1)
0.66
(16.8)
0.19
(4.8)
#2-56 INSERT
0.156 (3.96 DEEP)
1.07
(27.2)
0.10
(2.5)
DMS-BZL3
OPTIONAL BEZEL
1.28
(32.5)
0.10
(2.5)
1.63 (41.4)
1.83 (46.5)
USA:
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: [email protected] ISO 9001 and 14001 REGISTERED
11/24/08
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.
© 2008 Murata Power Solutions, Inc.
www.murata-ps.com
Mansfield (MA), Tel: (508) 339-3000, email: [email protected]
Canada:
Toronto, Tel: (866) 740-1232, email: [email protected]
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected]
France:
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: [email protected]
Germany:
München, Tel: +49 (0)89-544334-0, email: [email protected]
Japan:
Tokyo, Tel: 3-3779-1031, email: [email protected]
Osaka, Tel: 6-6354-2025, email: [email protected]
China:
Shanghai, Tel: +86 215 027 3678, email: [email protected]
Guangzhou, Tel: +86 208 221 8066, email: [email protected]
Singapore:
Parkway Centre, Tel: +65 6348 9096, email: [email protected]
Technical enquiries email: [email protected], tel: +1 508 339 3000
MPM_DMS-20LCD-23-DCM_B02 Page 2 of 2
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