Ac Voltage Measurements; Dc Current Measurements - Sonel CMM-10 Manual De Uso

6.2

AC voltage measurements

Do not measure AC voltages if a motor on the circuit is being
switched ON or OFF. Large voltage surges may occur that
can damage the meter.
Risk of Electrocution. The probe tips may not be long
enough to contact the live parts inside some 240 V outlets
for appliances because the contacts are recessed deep in
the outlets. As a result, the reading may show 0 volts when
the outlet actually has voltage on it. Make sure the probe tips
are touching the metal contacts inside the outlet before as-
suming that no voltage is present.
In order to realise a measurement of AC voltage, it is necessary
to realise the following actions:

Set the function switch to the V

With the RANGE button set the measurement range manually
if necessary,

Insert the black test lead banana plug into the negative COM
jack. Insert the red test lead banana plug into the positive
VΩTEMPHz%mAμA jack,

Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the "hot" side of the circuit,

Read the voltage in the display.
6.3

DC current measurements

To avoid electric shock, do not measure DC current on any
circuit whose voltage exceeds 250 V.
42
CAUTION!
WARNING:
WARNING:
CMM-10 – USER MANUAL
position,