www.murata-ps.com DMS-20PC-1-LM Self-Powered 3 Digit, LED Display AC Line Voltage Monitors Murata Power Solutions DMS-20PC-1-LM is a component-size, self-contained, low-cost FEATURES ac voltmeter for true line measurements. It requires no additional components or auxiliary Plugs directly into USA-style wall outlets power. Simply plug it into any wall outlet and instantly read voltages from 85 to 264Vac Screw terminals for panel mounting (47-63Hz). The large (0.37 /9.4mm), bright red, blue or green LED display makes the Small 1.38 x 0.88 x 1.0 packages DMS-20PC-1-LM easily readable under any lighting conditions. DMS-20PC-1-LM employs half-wave Large, easy-to-read, red, blue or green LED displays DMS-20PC-1-LM-F sinusoidal averaging (rms calibrated) and has (Blade Terminals) Fully encapsulated for harsh environments a display resolution of 1Vac over its full input 8C48 Half-wave averaging, rms calibrated range. Packaged in a red- lter case with built- in bezel, the meter is fully encapsulated for UL, CSA and IEC1010-1 certi ed ruggedness. All units are overvoltage protected Very low cost to 300Vac. C US E156931 This low-cost meter is ideal for industrial, laboratory, of ce and eld-service applica- tions. Its miniature size is perfect for design Functional Speci cations DMS-20PC-1-LM into high-end consumer electronics, laboratory (Panel Mount) Input instrumentation and other products requiring Voltage Range 85-264Vrms accurate ac line monitoring. Suggested wiring (user supplied) UL/IEC61010-1 Measurement Category II Frequency Range 47-63Hz Current Consumption 50mArms (max.) Ordering Information Performance Sampling Rate 2.5 readings/second DMS-20PC-1-LM-C Red LED with threaded standoffs Measurement Type Half-wave average, rms DMS-20PC-1-LM-B-C Blue LED with threaded standoffs calibrated for sinusoidal input DMS-20PC-1-LM-G-C Green LED with threaded standoffs Accuracy +25C 1V (typ.), 2V (max.) DMS-20PC-1-LM-F-C Red LED with blade terminals Temperature Drift DMS-20PC-1-LM-BF-C Blue LED with blade terminals (25 to +60C) 0.15 Volts/C (max.) DMS-20PC-1-LM-GF-C Green LED with blade terminals DMS-20-CP Optional panel cutout punch Mechanical DMS-BZL3-C Optional panel mount bezel Dimensions 1.38 x 0.88 x 1.00 DMS-BZL4-C Optional panel mount bezel with sealing gasket Display Type 3 digit, red LED, 0.37 /9.4mm Weight 1 ounce (28 grams) Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with meter. Case Material Polycarbonate 6-32 screw torque 6-8 in-lb (0.7 0.9N-m) Environmental Operating Temperature 25 to +60C Storage Temperature 40 to +75C Humidity (Non-condensing) 0 to 95% Operation and accuracy at inputs above or below these ranges are not speci ed. CURRENT LIMITED AC SUPPLY For full details go to Typical Connection Diagram www.murata-ps.com/rohs www.murata-ps.com/support MPM DMS-20PC-1-LM.D01 Page 1 of 2DMS-20PC-1-LM Self-Powered 3 Digit, LED Display AC Line Voltage Monitors Power Supply Polarity, Grounding, Fusing, and Wiring 1. Polarity and Grounding: 3. UL Listed Models with Plug-in Blade Terminals: DMS-20PC-1-LMs two ac-supply input terminals are not polarity sensitive, that is, they have no AC LO or AC HI designations. These units do not include nor require a connection to earth/chassis ground. All ac-supply wiring Plug-in DMS-20PC-1-LM-XF models are not internally fused and must be must be rated for the voltages and currents they will conduct and comply protected by an external current limiting circuit breaker or fuse in accordance with any code or application-mandated requirements pertaining to the users with applicable regulatory codes. These models are designed to be plugged speci c installation. Additional model-speci c information is provided below. into NEMA 1-15R, NEMA 5-15R, and NEMA 5-20R receptacles. 2. UL Recognized Panel Mount Models with Screw Terminals: 4. Description of the safety marks: Caution, risk of electrical shock C US E156931 Caution, risk of danger DMS-20PC-1-LM AC voltmeters are not internally fused. The supply wires feeding these voltmeters must be fused with a 0.25A/250V time delay/time lag Equipment is protected throughout by double or reinforced insulation fuse, in accordance with applicable regulatory codes. The rear threaded stand- off input-terminals are to be used only for powering the voltmeters internal 5. Cleaning Instructions: Gently clean with dry cloth only. circuitry they must not be used to supply power to external loads. 2 2 6. Caution: if the equipment is used in a manner not speci ed by Murata The recommended wire size is 16AWG to 20AWG (1.31mm to 0.52mm ) Power Solutions, the protection provided by the equipment may be stranded copper wire. Wires must be properly stripped and attached to the impaired. threaded standoffs such that their insulation is not pinched by the supplied 6-32 screws. Rated tightening torque for the 6-32 screws is 7 to 8 pound- inches (0.8 to 0.9N-m). 300V UL rated wire suitable for the intended applica- tion is required. 1.30 (33.0) 0.04 (1.016) 0.04 0.04 1.38 (1.016) (1.016) 6-32 (35.1) UNC THD 0.44 (11.2) 0.80 0.88 0.37 (20.3) (22.4) (9.4) 0.75 0.32 1.00 (19.1) (8.1) (25.4) 0.19 2-56 INSERT (4.8) 0.156 (3.96) DEEP DMS-BZL3-C 1.07 1.28 (32.5) (27.2) Optional Bezel Dimensions in inches (millimeters) Tolerances: 2 PL Dec 0.02 (0.51) 3 PL Dec 0.010 (0.254) 0.10 1.63 (41.4) Recommended panel cutout dimensions: 0.10 (2.5) (2.5) 1.336 (33.93)W 0.838 (21.29)H 1.83 (46.5) Internal corner radii 0.032 (0.81) Max. This product is subject to the following operating requirements Murata Power Solutions, Inc. and the Life and Safety Critical Application Sales Policy: 11 Cabot Boulevard, Mans eld, MA 02048-1151 U.S.A. Refer to: