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Operating Instructions; Ac Current Measurements - Craftsman 19741 Owner's Manual

Ac/dc true rms clamp meter
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UL LISTED
The
UL
mark
does
not
indicate
that
this
product
has
been
evaluated for the accuracy of its readings
PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY !
Equipment
of OVERVOLTAGE
CATEGORY
| is equipment
for
connection
to circuits in which
measures
are taken to limit the
transient
overvoltages
to
an
appropriate
low
level.
Note
Examples include protected electronic circuits.
OVERVOLTAGE CATEGORY II
Equipment
of
OVERVOLTAGE
CATEGORY
II
is
energy-
consuming equipment to be supplied from the fixed installation.
Note
Examples
include
household,
office,
and
laboratory
appliances.
OVERVOLTAGE CATEGORY III
Equipment of OVERVOLTAGE
CATEGORY
III is equipment in
fixed installations.
Note — Examples
include switches
in the fixed installation and
some equipment for industrial use with permanent connection to
the fixed installation.
OVERVOLTAGE CATEGORY IV
Equipment of OVERVOLTAGE
CATEGORY
IV is for use at the
origin of the installation.
Note — Examples include electricity meters and primary over-
current protection equipment
10
OPERATING INSTRUCTIONS
Notice: Read and understand all WARNING and CAUTION
statements listed in the safety section of this operation manual
prior to using this meter. Set the function select switch to the
OFF position when the meter is not in use.
NOTES:
1.
ALWAYS turn the rotary function switch to the OFF position
when the meter is not in use
2.
If "OL" appears in the display during a measurement, the value
exceeds the range you have selected. Change to a higher
range
DC/AC CURRENT MEASUREMENTS
WARNING:
Disconnect the test leads from the meter before
making current clamp measurements.
1.
Set the Function switch to the 400ADC, 40ADC, 400AAC or
40AAC
range. If the range of the measured current is not
known, select the higher range first then move to the lower
range if necessary.
2.
For DC current measurement, press the ZERO key to null the
meter display.
3.
Press the trigger to open jaw. Fully enclose one conductor to
be measured.
Note: Do not put more than one wire inside the current clamp.
The clamp meter LCD will display the reading.
11

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