DCA-20PC-5-DC4-RL-C.

DCA-20PC Series www.murata-ps.com LED Display, Subminiature DC Ammeters with Built-In Shunts FEATURES Built-in shunts for digitally measuring dc currents from 200uA to 20A Functionally complete – no additional components required Wide power supply inputs: 5 to 40Vdc for 5V/12/24V/28V applications 36-75V option for telecom supplies 8-36Vdc Isolated-supply models for high-side shunts 20mV internal shunt minimizes power loss Includes load connections for easy 3 or 4-wire operation High resolution; Factory calibrated to ±0.1% accuracy  Large, easy-to-read, LED display with 0.37” (9.4mm) high digits Available with red, blue or green LED displays Murata Power Solutions’ new DCA-20PC Series are the first digital dc ammeters to include built-in shunts for measuring dc currents up to 20A. Six ranges provide for precision measurement of dc currents from 200uA to 20A. These ammeters are 100% self-contained; no calibration or user-supplied components are required—they even include terminal blocks for your external load circuit, a feature that enables simple 3-wire operation! Two shunt-configurations are offered: grounded-shunt (“low side”), 5-40V-powered models for cost-sensitive applications, and 8-36V isolated-supply models for high side or floating shunt applications. A versatile power supply design accommodates all popular supply voltages from 5 to 75Vdc. Reverse-polarity-protected supply inputs ensure trouble free installation. And, because many dc ammeters are installed in battery backup applications, power consumption is typically below 1 Watt for 8-36V models, and below 75mW for 5-40V models. To further reduce overall power consumption, the voltage dropped across its built-in series shunt is only 20mV! DCA-20PC Series ammeters are housed in subminiature, 1.38˝ x 0.88˝ (35mm x 22mm), rugged packages that feature a large, 0.37˝/9.4mm high, LED display. A built-in, high-contrast color filter ensures that legibility is not compromised: the display can be easily read at distances up to 15 feet (5 meters). Available LED-display colors include brilliant blue, bright green, and standard red. Built-in shunts, Precision electronics, miniature size, wide power supply inputs, low power consumption, and no-hassle 3-wire installation make DCA-20PC Series the ideal choice for all your 200uA to 20A ammeter-applications. Small 1.38˝ x 0.88˝ x 1.0˝ package LED DISPLAY – INPUT AMPLIFIER +5V A/D CONVERTER + * BUILT-IN SHUNT – 1 2 TB1 –SHUNT (–V) 　 For full details go to www.murata-ps.com/rohs POWER GROUND SIGNAL GROUND + 1 POWER CONVERTER –5V 1 2 22 3 * Open on isolated-supply models ** Applies to isolated-supply models only +SHUNT TB2 LOAD (+) – – EXTERNAL LOAD EXTERNAL DC SUPPLY +V –V ** + + Figure 1. Simplified Schematic www.murata-ps.com/support MPM_DCA-20PC.C01 Page 1 of 6 DCA-20PC Series LED Display, Subminiature DC Ammeters with Built-In Shunts Performance/Functional Specifications Typical at TA = +25°C, unless otherwise noted. Full Scale Load Current ➀ DCA-20PC-1 Physical/Environmental (continued) Min. Typ. Max. Units – – 199.9 µAdc Humidity (non-condensing) DCA-20PC-2 – – 1.999 mAdc Case Material DCA-20PC-3 – – 19.99 mAdc Dimensions mAdc Weight DCA-20PC-4 – – 199.9 DCA-20PC-5 – – 1.999 Adc DCA-20PC-6 – – 19.99 Adc Overcurrent Rating (