DMR35-DCA.A01.D04 Page 4 of 8

DMR35-DCA Series

Precision DC Shunt Ammeter

www.murata-ps.com

CONNECTION EXAMPLES

The schematic below shows how a DMR35 DC current meter can be used to perform a ‘high-side’ current measurement, where the meter is inserted into

the load’s positive leg. In this example, the meter is powered from the same power source powering the load, and the meter’s current sensing terminals

(+I_IN, -I_IN) are at a potential of 12 volts higher than the meter’s negative power terminal (-VS). The meter can also just as easily be used to measure

current in the load’s negative leg (‘low-side’ current sensing).

It is also possible to use the meter to monitor voltage in a circuit that is independent of the meter’s power supply circuit, as shown in the schematic below.

When used in this way, the meter’s current measuring terminals may electrically float with respect to its power supply terminals, as long as the voltage

difference between the two terminal pairs remains within +/- 48V of each other.