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4
Characteristics and Specifications
CALIBRATION
Measurement Category
Measurement Category Definition Measurement CAT I is for measurements performed on circuits not directly connected
[1]
For remote connections using Agilent E5813A, refer to
[2]
Compatible with Microsoft Windows operating systems only.
[3]
Applicable for NPLC >1
[4]
Applicable for NPLC 0.2 and 0.02
66
Calibration interval of one year is highly recommended
The U2741A USB modular digital multimeter is intended to be used for measurement in
Measurement Category II, 300 V.
to MAINS. Examples are measurements on circuits not derived from MAINS, and
specially protected (internal) mains- derived circuits.
Measurement CAT II are measurements performed on circuits directly connected to
the low voltage installation. Examples are measurements on household appliances,
portable tools, and similar equipment.
Measurement CAT III are measurements performed in the building installation.
Examples are measurements on distribution boards, circuit- breakers, wiring, including
cables, bus- bars, junction boxes, switches, socket outlets in the fixed installation, and
equipment for industrial use, and some other equipment including stationary motors
with permanent connection to the fixed installation.
Measurement CAT IV are measurements performed at the source of the low- voltage
installation. Examples are electricity meters and measurements on primary over
current protection devices and ripple control units.
Chapter
1.
U2741A User's Guide
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