Dc Current Measurement - Velleman DVM040 User Manual

• It is normal situation and no effect on measurement, once at mV
or V range, even without input or connect with test lead, meter
shows value in LCD.
• An over-range is indicated by OL or -OL. Set to a higher range.

10.2 DC CURRENT MEASUREMENT

Do not measure circuits that may contain voltages > 1000 VDC or
> 750 VAC
Use extreme caution when measuring voltages higher than 60 VDC
or 30 VAC rms.
Always place your fingers behind the protective edges of the test
probes while measuring!
1. Remove the power from the circuit under test and discharge the
capacitors of the circuit, set the rotary switch to current measuring
range.
2. Insert black test lead banana plug into the negative COM jack, for
current measurement less than 200mA insert the red test lead banana
plug into the µA/mA jack, for current measurement between 200mA to
10A insert the red test lead banana plug into 10A jack.
3. Break the circuit under test, connect the black test lead to the more
negative side of the break, and connect the red test lead to the more
positive side of break.
4. Turn on the power of circuit under test and read the value in LCD
display.
5. Turn off the power of circuit under test and discharge all capacitors,
remove the test leads and recover the measured circuit.
Notes
• To avoid damage to the meter, check the fuse of the meter
before current measurement.
• User the proper terminals, function and range for any current
measurement
• Never attempt an open circuit potential to earth is greater than
250V, do not place the test leads in parallel with a circuit or
component when the test leads are plugged into the current
terminals
• An over-range is indicated by OL or -OL. Set to a higher range.
V. 01 – 04/05/2023
DVM040
13 ©Velleman Group nv