DATEL, Inc., Mansfi eld, MA 02048 (USA)
Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356
Email: sales@datel.com
Internet: www.datel.com
DATEL 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. The DATEL logo is a registered DATEL, Inc. trademark.
DATEL's new DMS-20LCD-0/1-DCM, self-contained, self-powered, dc volt-
age monitors set new standards for quality, performance, size and cost.
Simply apply power to the two rear terminals and the unit is operational. No
additional components are required! The large,
0.37"/9.4mm, LCD display, with built-in "V
DC
"
annunciator, can be easily read from 10 feet.
Two models are available: one for 12Vdc nomi-
nal operation (+6.50-18.00V range, 0.01V reso-
lution), the other for 24Vdc nominal operation
(+8.0- 50.0V range, 0.1V resolution). Reverse
polarity protection is standard on both models.
The DMS-20LCD-DCM utilizes a precision
analog-to-digital converter and ultra-stable pas-
sive components to achieve excellent perfor-
mance over the operating temperature range
of 0 to +60C. A rugged, ABS plastic package
provides excellent protection against shock and
vibration. DMS-20LCD-DCM's are without a
doubt the most cost-effective, LCD-display, digi-
tal voltmeters available anywhere, at any price.
DMS-20LCD-0/1-DCM
Self-Powered, +12V and +24V, LCD
Display, 2-Wire DC Voltage Monitors
Features
Actual Size
Self-powered, only two connections required
+6.50-18.00Vdc (0.01V resolution) or
+8.0-50.0Vdc (0.1V resolution) input ranges
Ideal for battery-powered systems
Reverse polarity protected
Built-in "V
DC
" annunciator
Large (0.37"/9.4mm) LCD displays
Subminiature 1.38" x 0.88" x 0.66" packages
Rugged, ABS package
Ordering Information
Input
Voltage Range:
DMS-20LCD-0-DCM +6.50 to +18.00Vdc
DMS-20LCD-1-DCM +8.0 to +50.0Vdc
Max. Current Consumption:
DMS-20LCD-0-DCM 2mA @+12V, 7mA @ +18V
DMS-20LCD-1-DCM 2mA @ +24V, 6mA @ +50V
Performance
Sampling Rate 2.5 readings/second
Accuracy @ +25C:
DMS-20LCD-0-DCM 0.01V (typ.), 0.03V (max.)
DMS-20LCD-1-DCM 0.1V (typ.), 0.2V (max.)
Temperature Drift (0 to +60C):
DMS-20LCD-0-DCM 0.4 counts/C (max.)
DMS-20LCD-1-DCM 0.04 counts/C (max.)
Mechanical
Display Type:
DMS-20LCD-0-DCM 3 digit LCD, 0.37"/9.4mm high
DMS-20LCD-1-DCM 3 digit LCD, 0.37"/9.4mm high
Weight 0.5 ounce (14 grams)
Case Material ABS
Environmental
Operating Temperature 0 to +60C
Storage Temperature 20 to +75C
Humidity (Non-condensing) 0 to 85%
Functional Specifi cations
Brass screws (6-32 thread) and a panel-mount retaining clip are
supplied with each meter
Order online at www.datel.com
Operation and accuracy at voltages above or below these ranges
are not specifi ed.
Mechanical Specifi cations
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.
DS-0348B
04/03
D C
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
DATEL
DMS-20LCD-0-DCM +6.50 to 18.00V dc voltage monitor
DMS-20LCD-1-DCM +8.0 to 50.0V dc voltage monitor
DMS-20-CP Panel cutout punch
DMS-BZL3 Panel mount bezel
DMS-BZL4 Panel mount bezel with sealing gasket
Meters are not sealed; Do not expose to moisture or other contaminants.
Typical panel mount installation and
suggested wiring (user supplied).
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