DMS-20PC-4/5/6-DCM www.murata-ps.com Self-Powered LED Display, Negative Input DC Voltage Monitor FEATURES ■ 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 Functional Specifications Input Voltage Range: ➀ DMS-20PC-4-DCM DMS-20PC-5-DCM DMS-20PC-6-DCM Current Consumption: DMS-20PC-4/5-DCM DMS-20PC-6-DCM Performance Sampling Rate Resolution: DMS-20PC-4-DCM DMS-20PC-5-DCM DMS-20PC-6-DCM Accuracy @ +25°C: DMS-20PC-4-DCM DMS-20PC-5-DCM DMS-20PC-6-DCM –4.50 to –19.99Vdc –18.0 to –50.0Vdc –30 to –264Vdc 13mA (max.) 7mA (max.) 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, 3½ digit A/D converter and precision metal-film resistors to achieve outstanding performance over an operating temperature range of –25 to +60°C. A rugged, epoxy-encapsulated, polycarbonate case provides excellent protection against moisture, shock and vibration. 2.5 readings/second Mechanical Dimensions Display Type Typical panel mount installation and suggested wiring (user supplied) ±0.01V ±0.1V ±1V Ordering Information ±0.01V (typ.), ±0.03V (max.) ±0.1V(typ.), ±0.2V (max.) ±1V(typ.), ±2V (max.) DMS-20PC-4-DCM DMS-20PC-5-DCM DMS-20PC-6-DCM DMS-20-CP DMS-BZL3 DMS-BZL4 Weight Case Material 6-32 screw torque 1.38” x 0.88” x 1.00” 3 & 3½ digit, red LED, 0.37”/9.4mm 1 ounce (28 grams) Polycarbonate 6-8 in-lb (0.7 – 0.9N-m) Environmental Operating Temperature Storage Temperature Humidity (Non-condensing) –25 to +60°C –40 to +75°C 0 to 95% –4.50 to –19.99V dc voltage monitor –18.0 to –50.0V dc voltage monitor –30 to –264V dc voltage monitor Panel cutout punch Panel mount bezel assembly Panel mount bezel with sealing gasket Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with each meter ➀ Operation and accuracy at inputs above or below this range are not specified. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MPM_DMS-20PC-4-DCM.B04 Page 1 of 2 DMS-20PC-4/5/6-DCM Self-Powered LED Display, Negative Input DC Voltage Monitor 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. 1.30 (33.0) + – DMS-20PC-4-DCM ® ® 0.04 (1.016) 0.04 (1.016) #6-32 UNC THD 0.44 (11.2) 0.80 (20.3) 0.32 (8.1) + – 0.75 (19.1) 0.88 (22.4) ISO 9001 and 14001 REGISTERED 1.38 (35.1) 0.37 (9.4) 1.00 (25.4) #2-56 INSERT 0.156 (3.96) DEEP 1.07 (27.2) DMS-BZL3 Optional Bezel 0.10 (2.5) 1.63 (41.4) Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. 0.04 (1.016) 0.19 (4.8) 1.28 (32.5) 0.10 (2.5) 1.83 (46.5) 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. © 2012 Murata Power Solutions, Inc. www.murata-ps.com/support MPM_DMS-20PC-4-DCM.B04 Page 2 of 2