Dc Current Measurement; Resistance Measurement - C-LOGIC 520 Manual De Instrucciones

C-LOGIC 520

3.3.3 DC Current Measurement

• Disconnect power from the circuit. Allow all capacitors to discharge.
• Set the thumbwheel to the appropriate DC current range.
• Depending on the current to be measured, connect the red test lead to the
input or 10A socket and the black lead to the COM
• Cut the circuit and connect the wires in series with the circuit (the black wire
on the low voltage side)
• Connect the power supply to the circuit and read the measurement on the
display. If "OL" appears on the display, it means that the measurement has
exceeded the current range. Move the thumbwheel to a higher range.
WARNING
Never measure open circuit voltages exceeding 250V between input terminals
and ground to avoid injury or damage to the meter.
NOTE
Check the fuses before making current measurements. Be sure to use the
correct input sockets to prevent damage to the meter.

3.3.4 Resistance measurement

• Disconnect power from the circuit. Allow all capacitors to discharge.
• Set the thumbwheel to the appropriate resistance range.
• Connect the red test lead to the input terminal and the black lead to the COM
terminal.
• Connect the wires to the circuit being tested and read the measurement on
the display.
Tips for measuring resistance:
• The resistance in the circuit is usually different from the measured resistance
because the test current also flows through the multimeter.
• For greater accuracy when measuring low resistances, short the test leads,
record the displayed value, then connect the leads to the circuit and subtract
the shorted value from the circuit measurement.
• When the wires are disconnected from the circuit you are testing, "OL" will
appear on the display.
WARNING
To avoid injury or damage to the multimeter, disconnect power from the
circuit and completely discharge all capacitors before making resistance
measurements.
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EN