DMS20-FM MURATA | Alldatasheet

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Technical content

Self-Powered, 3-Digit LED Display AC Line Frequency Monitors MPM_DMS-20PC-FM_G01 Page 1 of 2 For full details go to www.murata-ps.com/rohs www.murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 DATEL's new DMS-20PC-FM Series are the world’s smallest, self-powered, ac fre- quency meters. Simply connect the ac line to the two rear input terminals, and the unit is fully operational with no additional components or auxiliary power required! Two, 50/60Hz models operate over input voltage ranges of 85-140Vac or 170-264Vac. A third, 400Hz model operates over an input voltage range of 85-140Vac. Despite their small size (1.38" x 0.88" x 1.0"), DMS-20PC-FM meters feature large 0.40"/10.2mm red LED's that can be easily read from 15 feet away. An ultra-stable, quartz-crystal-con- trolled, embedded microcomputer provides accuracies of ±0.1Hz (50/60Hz models) or ±1.0Hz (400Hz model) over the entire oper- ating temperature range of –25 to +60°C. Epoxy encapsulated plastic packages provide excellent protection against the harsh environments normally encountered by emergency backup power generators. DMS-20PC-FM meters are the exact same size as DATEL's popular AC Line Voltage Monitors (models DMS-20PC-X-LM).

FEATURES

N Self-powered, no external supplies required N 3 models: 47.0-99.0Hz (85-140Vac) 47.0-99.0Hz (170-264Vac) 350-450Hz (85-140Vac) N Screw terminals simplify panel mounting N Ideal for emergency power equipment N Small 1.38" x 0.88" x 1.0" packages N Epoxy encapsulated for harsh environments N Large (0.40"/10.2mm) red LED displays Ḥ Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with each meter. DMS-20PC-1-FM-F (With blade terminals) DMS-20PC-1-FM (Panel mount)

Ordering Information

Functional Specifications DMS-20PC-1-FM 47.0-99.0Hz/120Vac frequency monitor DMS-20PC-1-FM-F "-1" models with blade terminals DMS-20PC-2-FM 350-450Hz/120Vac frequency monitor DMS-20PC-3-FM 47.0-99.0Hz/220Vac frequency monitor DMS-20-CP Panel cutout punch DMS-BZL3 Panel mount bezel DMS-BZL4 Panel mount bezel with sealing gasket Input Freq. Range (Voltage Range): ~ DMS-20PC-1-FM 47.0-99.0Hz (85-140V ac) DMS-20PC-2-FM 350-450Hz (85-140Vac) DMS-20PC-3-FM 47.0-99.0Hz (170-264Vac) Current Consumption 50mArms (max.) Overvoltage Protection: DMS-20PC-1/2-FM 200Vrms (max.) DMS-20PC-3-FM 300Vrms (max.) Performance Sampling Rate 4 readings/second Accuracy (–25 to +60°C): DMS-20PC-1/3-FM ±0.1Hz DMS-20PC-2-FM ±1.0Hz Mechanical Dimensions 1.38" x 0.88" x 1.00" Display Type 3 digit, red LED , 0.4"/10.2mm Weight 1 ounce (28 grams) Case Material Polycarbonate Environmental Operating Temperature –25 to +60°C Storage Temperature – 40 to +75°C Humidity (Non-condensing) 0 to 95% ~ Operation and accuracy at inputs above or below these ranges are not specified. E156931

Self-Powered, 3-Digit LED Display AC Line Frequency Monitors MPM_DMS-20PC-FM_G01 Page 2 of 2 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. USA: Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com Canada: Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com UK: Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Germany: München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com Japan: Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com China: Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com 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: sales@murata-ps.com ISO 9001 and 14001 REGISTERED Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com 11/24/08 Dimensions in inches (millimeters) Tolerances: 2 PL Dec ±0.02 (±0.51) 3 PL Dec ±0.010 (±0.254) Recommended panel cutout dimensions: Internal corner radii 0.032 (0.81) Max. 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) 0.44 (10.2) 0.88 (20.4) 1.38 (35.1) 0.04 (1.016) 1.30 (33.0) 0.44 (10.2) 1.63 (41.1) 1.83 (46.5) 0.44 (10.2) 1.07 (27.2) 0.10 (2.5) #6-32 UNC THD #2-56 INSERT 0.156 (3.96 DEEP E156931