ACT Meters 720 Datalogging Multimeter - Manual (Page 11)

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ACT 720
Measurement Considerations
NOTICE: Read and understand all WARNING and CAUTION statements listed in the safety
section of this operation manual prior to using this meter
1. Always move the rotary function switch to the OFF position when the meter is not
in used. The meter has Auto Power OFF that automatically shuts the meter OFF if 17
minutes elapse without activity
2. If ‘OL’ appears on the display during a measurement, the measurement exceeds the
range selected. Change to a higher range.
AC/DC Voltage Measurements
1. Insert the black test lead into the negative COM jack and the red test lead into the
positive V jack
2. Set the function switch to the ‘VAC’ ‘VDC’ ‘mV’ position. Press the SELECT key
momentarily to toggle between AC and DC
3. Read the voltage measurement on the display
AC/DC Current Measurements
CAUTION: Do not make current measurements at 20A for longer than 30 seconds.
Exceeding 30 seconds may cause damage to the meter and/or the test leads.
1. Insert the black test lead into the negative COM jack
2. For current measurements up to 4000µ, set the function switch to the ‘µA’ position and
insert the red test lead into the mA-µA jack
3. For current measurements up to 400mA, set the function switch to the ‘mA’ position
and insert the red test lead into the mA-µA jack
4. For current measurements up to 10A, set the function switch to the ‘A’ position and
insert the red test lead into the A jack
5. Press the SELECT key momentarily to toggle between AC and DC
6. Remove power from the circuit under test and open the circuit at the point where you
wish to measure current
7. Touch the black test probe tip to the negative side of the circuit and touch the red test
probe tip to the positive side of the circuit
8. Apply power to the circuit
9. Read the current on the display