NOVUS DC80L - Manual (Page 12)

12
b) Measurements using calibrator’s internal power supply for powering the
loop
The calibrator provides an internal 24 V power supply for measuring the signal of
2-wire transmitters (sink transmitters). The 24 Vdc is applied between terminals
+LOOP e COM. The sink transmitter is to be connected between terminals
+LOOP (Power supply output) and mA (terminal for the loop current monitoring).
1. Press the power switch to
turn on the Calibrator.
2. Choose OUTPUT mode by
pressing the INPUT / OUTPUT
key .
3. Press the mA / mA % mode key
to choose the desired unit.
The sings mA or mA % will
be presented on the display.
4. Plug the red test lead into the
LOOP jack and the black
one to the mA jack .
5. Connect the test leads such that
the current enters the red lead
and returns to the power supply
through the black lead.
6. The measurement is shown on
the display .
DC mA generation
a) Sourcing mA
1. Press the power switch to
turn the Calibrator ON.
2. Press the input / output mode
key to select OUTPUT
mode .
3. Press the mA / mA % mode key
to select mA or mA % .
4. Press the increment /
decrement keys
to set the desired output value.
5. Plug the red test lead into the
LOOP jack and the black
one to the V jack .
6. Connect the test leads such that
the current enters the red lead
and returns to the power supply
through the black lead.
7. To change the output value,
press the increment / decrement
keys and / or
the mA mA % mode key .