DMS-20PC-FM Series Self-Powered, 3-Digit LED Display AC Line Frequency Monitors FEATURES N Self-powered, no external supplies required N 3 models: 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 47.0-99.0Hz (85-140Vac) 47.0-99.0Hz (170-264Vac) 350-450Hz (85-140Vac) Functional Specifications Input Freq. Range (Voltage Range): ~ DMS-20PC-1-FM DMS-20PC-2-FM DMS-20PC-3-FM Current Consumption Overvoltage Protection: DMS-20PC-1/2-FM DMS-20PC-3-FM Performance Sampling Rate Accuracy (–25 to +60°C): DMS-20PC-1/3-FM DMS-20PC-2-FM Mechanical Dimensions Display Type Weight Case Material Environmental Operating Temperature Storage Temperature Humidity (Non-condensing) 47.0-99.0Hz (85-140Vac) 350-450Hz (85-140Vac) 47.0-99.0Hz (170-264Vac) 50mArms (max.) 200Vrms (max.) 300Vrms (max.) 4 readings/second ±0.1Hz ±1.0Hz DATEL's new DMS-20PC-FM Series are the world’s smallest, self-powered, ac frequency 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-controlled, embedded microcomputer provides DMS-20PC-1-FM-F accuracies of ±0.1Hz (50/60Hz models) or (With blade terminals) ±1.0Hz (400Hz model) over the entire operating temperature range of –25 to +60°C. Epoxy encapsulated plastic packages provide excellent protection against the DMS-20PC-1-FM (Panel mount) 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). Ordering Information DMS-20PC-1-FM DMS-20PC-1-FM-F DMS-20PC-2-FM DMS-20PC-3-FM DMS-20-CP DMS-BZL3 DMS-BZL4 47.0-99.0Hz/120Vac frequency monitor "-1" models with blade terminals 350-450Hz/120Vac frequency monitor 47.0-99.0Hz/220Vac frequency 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. 1.38" x 0.88" x 1.00" 3 digit, red LED, 0.4"/10.2mm 1 ounce (28 grams) Polycarbonate –25 to +60°C – 40 to +75°C 0 to 95% ~ Operation and accuracy at inputs above or below these ranges are not specified. For full details go to www.murata-ps.com/rohs E156931 www.murata-ps.com Technical enquiries email: [email protected], tel: +1 508 339 3000 MPM_DMS-20PC-FM_G01 Page 1 of 2 DMS-20PC-FM Series Self-Powered, 3-Digit LED Display AC Line Frequency 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. 1.30 (33.0) 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) 1.38 (35.1) 0.44 0.88 (20.4) (10.2) 1.00 (25.4) 0.44 (10.2) #2-56 INSERT 0.156 (3.96 DEEP 0.44 (10.2) 1.07 (27.2) 0.10 (2.5) 0.10 (2.5) 1.63 (41.1) 1.83 (46.5) E156931 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-20PC-FM_G01 Page 2 of 2