Conrad Electronic SI-7004 Operating Instructions Manual page 11

4.3.2 DC Current Measurement
The voltage measuring range is not changed when the module is
wired as amperemeter. The voltage drop over the shunt is mea-
sured. To adapt the module to the different measuring currents,
different shunts are necessary, see the following diagram.
Measuring Input
0.2 mA...Z A
C
Attention!
The additional measuring error (additionally to basic accuracy)
depends on the tolerances of the connected precision resi-
stances of the voltage divider.
4.3.3 DC Units Measurement
This means because of special circuit elements a DC voltage and
DC current measuring unit can only be realized with a panel
meter. This example of a circuit is only advantageous, if a panel
meter must be used in a power supply for space safing reasons.
The following figure shows this wiring example.
20 mA
LCD Panel-Meter
200 mA
+
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