DATEL, Inc., Mansfield, 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. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
0.10
(2.5)
0.75
(19.1)
0.44
(11.2)
0.80
(20.3)
0.04
(1.016)
0.32
(8.1)
1.00
(25.4)
0.37
(9.4)
0.88
(20.4)
1.38
(35.1)
0.04
(1.016)
1.30
(33.0)
DMS-20PC-4-DCM
+
0.19
(4.8)
1.63 (41.4)
1.83 (46.5)
1.28
(32.5)
1.07
(27.2)
0.10
(2.5)
#6-32
UNC THD
#2-56 INSERT
0.156 (3.96 DEEP
DMS-20PC-4/5/6-DCM
Self-Powered, LED, Negative
Input, DC Voltage Monitors
DATEL's DMS-20PC-DCM Series of self-powered, negative-reading, dc
voltage monitors are great replacements for older, hard-to-read, analog meters.
Simply connect a negative voltage across the rear terminals and the meters are
fully operational! Negative-input DCM's can be easily combined with positive-
reading DMS-20PC-DCM's for monitoring dual-polarity
power supplies.
Three versions are available: one for 4.50 to
19.99Vdc (0.01V resolution), one for 18.0 to
50.0Vdc (0.1V resolution), and one for 30 to
264Vdc (1V resolution). Their large, 0.37"/
9.4mm, bright red LED displays can be easily read
from 15 feet away. Built-in reverse polarity
protection assures simple, trouble-free installation.
All DMS-20PC-DCM's employ a high-resolution, 3
digit A/D converter and precision metal-film resistors
to achieve outstanding performance over an
operating temperature range of 25 to +60C.
A rugged, epoxy-encapsulated, polycarbonate
case provides excellent protection against
moisture, shock and vibration.
Actual Size
DMS-BZL3
Optional Bezel
Mechanical Specifications
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.
Features
Ordering Information
DMS-20PC-4-DCM
4.50 to 19.99V dc voltage monitor
DMS-20PC-5-DCM
18.0 to 50.0V dc voltage monitor
DMS-20PC-6-DCM
30 to 264V dc voltage monitor
DMS-20-CP
Panel cutout punch
DMS-BZL3
Panel mount bezel assembly
DMS-BZL4
Panel mount bezel with sealing gasket
Brass screws (6-32 thread) and a panel-mount retaining clip are
supplied with each meter
Functional Specifications
Operation and accuracy at inputs above or below these ranges
are not specified.
Input
Voltage Range:
DMS-20PC-4-DCM
4.50 to 19.99Vdc
DMS-20PC-5-DCM
18.0 to 50.0Vdc
DMS-20PC-6-DCM
30 to 264Vdc
Current Consumption:
DMS-20PC-4/5-DCM
13mA (max.)
DMS-20PC-6-DCM
7mA (max.)
Performance
Sampling Rate
2.5 readings/second
Resolution:
DMS-20PC-4-DCM
0.01V
DMS-20PC-5-DCM
0.1V
DMS-20PC-6-DCM
1V
Accuracy @ +25C:
DMS-20PC-4-DCM
0.01V (typ.), 0.03V (max.)
DMS-20PC-5-DCM
0.1V(typ.), 0.2V (max.)
DMS-20PC-6-DCM
1V(typ.), 2V (max.)
Mechanical
Dimensions
1.38" x 0.88" x 1.00"
Display Type
3 & 3 digit, red LED, 0.37"/9.4mm
Weight
1 ounce (28 grams)
Case Material
Polycarbonate
Environmental
Operating Temperature
25 to +60C
Storage Temperature
40 to +75C
Humidity (Non-condensing)
0 to 95%
Self-powered, only two connections required
4.5 to 20Vdc, 18 to 50Vdc, and
30 to 264Vdc models
Can be used with positve-reading DMS-20PC-DCM's
Ultra-low power consumption (8mA typ.)
0.37"/9.4mm high, bright red, LED displays
Subminiature 1.38" x 0.88" x 1.0" packages
DS-0349A 1/98
Typical panel
mount installation
Suggested wiring
(User supplied)
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