Murata DCA5-20PC Series Manual

www.murata-ps.com
FEATURES
 
Scales and displays the output of 5A to
2000A, 50mV & 100mV shunts
 
Completely self-contained – no additional
components required
 
Wide power supply inputs: 5 to 40Vdc for
12V/24V/28V applications
 
48V option for telecom supplies
 
Isolated-supply models for high-side shunts
 
Large, easy-to-read LED display with 0.37"
(9.4mm) high digits
 
Available in red, blue or green LED displays
 
Subminiature 1.38" x 0.88" package with
screw-style terminal blocks
 
Factory calibrated to ±0.1% accuracy;
Reverse-polarity protection
 
Over 50 models available
 
Digital upgrade for analog meters
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
50mV & 100mV Input, LED-Display, Subminiature DC Ammeters
Murata Power Solutions' new DCA5-20PC Series dc ammeters are specifi cally designed to dis-
play the output of all popular 50mV and 100mV dc-shunts. 25 input ranges provide for precision
measurement of dc currents from 1.000A to 2000A. With the exception of an external shunt,
the unit is 100% self-contained – no calibration or user-supplied components are required.
Available LED-display colors include brilliant blue, bright green, and standard red. Three power
supply options accommodate all popular dc-supply voltages from 5V to 75Vdc, making these
ammeters perfect for automotive, industrial, telecom, and marine applications!
DCA5-20PC Series ammeters are housed in 1.38" x 0.88" (35mm x 22mm) rugged pack-
ages that feature a large, 0.37"/9.4mm high, LED display. However, display visibility is not com-
promised in any way: the display can be easily read at distances up to 15 feet (5 meters). All
input and power supply connections are made by way of two screw-style terminal blocks. For
added fl exibility, computer-style jumpers are provided for range-specifi c decimal point assign-
ments. And, to ensure trouble free installation, all models include reverse-polarity protected
power supply inputs.
Two input confi gurations are offered: grounded shunt ("low-side"), 5-40V-powered, red,
green or blue LED models for cost-sensitive applications, and 8-36V isolated-supply models
that accept high-side or fl oating shunts. Isolated-supply models are also available in a choice
of red, green, or blue LEDs. Since many dc ammeters are used in battery backup applications,
power consumption for 8-36V models is typically 1 Watt, and 75mW for 5-40V models.
Miniature size, wide supply inputs, and no-hassles installation make DCA5-20PC Series
ammeters the ideal choice for all your 50 and 100mV shunt ammeter-applications.
INPUT
*
AMPLIFIER
1 2
+IN
–IN
EXTERNAL
50 or 100mV SHUNT
Figure 1. DCA5-20PC Series Simplifi ed Schematic
LED DISPLAY
+
A/D
CAL
CONVERTER
–
**
TB1
Not included on all models
*
Open on isolated power models
**
DCA5-20PC Series
+5V
CONVERTER
–5V
1
SIGNAL
GROUND
+V
+
EXTERNAL DC SUPPLY
MPM_DCA5-20PC.C01 Page 1 of 6
POWER
POWER
GROUND
2
1 2
TB2
–V (GND)
–