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.
+
20
Measuring Input
0.2
A
200
LCD Panel-Meter
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.
11
