Amprobe AC68C Clamp-Multimeter - Manual (Page 8)

4
AC Current Measurement
1. Set the function/range selector to the appropriate A B
position (400 or 600 A).
2. Open spring-loaded clamp by pressing the lever on left
side of meter.
3. Position clamp around one wire or conductor and release
the clamp lever. Make sure that the clamp is entirely
closed. The clamp must be positioned around only one
conductor. If it is placed around two or more current
carrying conductors, the reading is FALSE.
4. Read the displayed value.
DC and AC Voltage Measurement
W
Warning
The maximum input voltage for DC or AC Volts is 600 Vrms. Do
not attempt to take any voltage measurement that exceeds
600 Vrms to avoid electrical shock hazard or damage to the
instrument.
1.
Set the function/range selector to the appropriate V F
(600 V) or V B (400 or 600 V) position.
2. Connect the black test lead to the “COM” terminal and the
red test lead to the “V
Ω’’ terminal. Connect probe tips to
the circuit and read the value.
Frequency Measurement
Note: Both ammeter and voltmeter can be used for frequency
measurement. The clamp-on Ammeter detects the frequency of
the current circulating in the cable or bus-bar under test (the
current must be greater than 1 A in the 400 A range and greater
than 15 A in the 600 A range). The Voltmeter detects the
frequency of the voltage applied to the leads.
1.
In either set-up (current or voltage measurement), set the
function/range switch to the Hz position.
2. Read the frequency value on the display.