DMR30-DCV1 Series Precision DC Voltmeter PRODUCT OVERVIEW The DMR30-DCV1 digital panel meter performs precision DC voltage measurements, with selectable ranges of +/-200mV, +/-2V, and +/-20V. This meter features a highly visible, 0.45 (11.4mm) high, 5 character+sign alphanumeric LED display which can provide up to 4.5 digits of measurement resolution. Configuration is made easy by a contactless touch-sensor front- panel user interface, eliminating the need for jumpers, potentiometers, or DIP switches. The meter is powered from an external 9-32VDC supply and typically requires only 40mA when operated at 12V. The measurement inputs provide +/-48V of common mode input range, simplifying its use in a wide range of applications. An isolated solid-state relay can be set to close at user-defined trip-points, providing external signaling capability. The meter features a rugged polycarbonate housing that is mountable in a round hole using the supplied nut and gasket, or by using 3 4-40 (M3) screws. The DMR30-DCV1 s features make it ideal for use in laboratory instrumentation, factory automation, and other applications requiring precise DC voltage monitoring. ORDERING INFORMATION: MODEL NUMBER DESCRIPTION DMR30-DCV1-1-DC4-R-C DC voltmeter, alarm output, red display DMR30-DCV1-1-DC4-G-C * DC voltmeter, alarm output, green display Features DMR30-DCV1-1-DC4-B-C * DC voltmeter, alarm output, blue display Selectable +/-200mV, 2V, 20V input ranges *Contact factory for availability. Bright 0.45 (11.4mm) LED display visible up to 20 feet (6 meters) Long-life contactless touch-sensor controls SIMPLIFIED BLOCK DIAGRAM Peak and valley measurement modes DMR30-DCV ALPHANUMERIC DISPLAY VOLTMETER Digital filter option for measurements in AND ANNUNCIATORS INPUTS noisy environments ALARM MAX MIN mV Solid-state alarm relay with programmable +VIN (5) ADC trip-point and hysteresis -VIN (6) Convenient mounting options Operates from 9 to 32 VDC Low current consumption 40mA typical at TOUCH SENSOR KEYPAD 12VDC Two year warranty MICROCONTROLLER RESET MENU MODE RELAY Solid State POWER SUPPLY OUTPUTS Relay INPUTS (1) RELAYB PTC Fuse +VS (3) 3.3V DC-DC (2) RELAYA -3.3V -VS (4) For full details go to www.murata-ps.com/rohs www.murata-ps.com/support.html DMR30-DCV1.A01 Page 1 of 11 DMR30-DCV1 Series Precision DC Voltmeter MEASUREMENT PERFORMANCE MIN. TYP. MAX. UNITS Measurement ranges 200mVDC 2VDC 20VDC Accuracy (Measured using 4 digit display formats) 0.05 0.2 % Full-Scale Temperature Stability 0.005 %Full-Scale/C Input Impedance 1 M Common Mode Rejection Ratio (DC) 100 dB Absolute Maximum input voltage (+VIN to VIN) -40 +40 V Absolute Maximum input voltage (either +VIN or VIN to VS) -48 48 V POWER SUPPLY CHARACTERISTICS. Min. Typ. Max. Units Operating Supply Voltage 9 32 VDC Absolute Maximum Supply Voltage -1 34 VDC Operating Supply Current 12V operation 40 - - mA 24V operation 25 USER INTERFACE Display Type and Size 5 Digit Alphanumeric LED, 11.4mm (0.45in) Height 4 LED Annunciators (Alarm, Max, Min, mV) User Controls Four capacitive touch sensors <UP> <DOWN> <LEFT> <RIGHT> Display Modes Normal, Max Voltage, Min Voltage Over-range Indication Flashing Value Display Update Rate 2.5 updates/sec. Decimal Point Selection Automatically Set Main Menu Password <RIGHT> <UP> <RIGHT> <UP> <RIGHT> RELAY OUTPUT Min. Typ. Max. Units Off-state voltage (measured across RELAYA to RELAYB) terminals -40 +40 V On-state current -250 +250 mA On state resistance 1 TERMINAL BLOCKS (TB1, TB2, TB3) Wire Size 14-24 AWG Insulation Strip Length 6mm (0.24 in.) Screw Tightening Torque 0.4 N-m (3.5 lb-in) PHYSICAL/ENVIRONMENTAL Min. Typ. Max. Units Operating Temperature 0 +50 C Storage Temperature -40 +75 C Humidity (non-condensing) 0 85 % Dimensions See Mechanical Specifications Drawing Weight (including mounting nut and gasket) 64g (2.2 oz) www.murata-ps.com/support.html DMR30-DCV1.A01 Page 2 of 11