Measurement Categories; Statement Of Conformity - Greenlee DM-860 Instruction Manual

Measurement Categories

These definitions were derived from the international safety standard for insulation
coordination as it applies to measurement, control, and laboratory equipment. These
measurement categories are explained in more detail by the International Electrotechnical
Commission; refer to either of their publications: IEC 61010-1 or IEC 60664.
Measurement Category I
Signal level. Electronic and telecommunication equipment, or parts thereof. Some examples
include transient-protected electronic circuits inside photocopiers and modems.
Measurement Category II
Local level. Appliances, portable equipment, and the circuits they are plugged into. Some
examples include light fixtures, televisions, and long branch circuits.
Measurement Category III
Distribution level. Permanently installed machines and the circuits they are hard-wired to.
Some examples include conveyor systems and the main circuit breaker panels of a building's
electrical system.
Measurement Category IV
Primary supply level. Overhead lines and other cable systems. Some examples include cables,
meters, transformers, and other exterior equipment owned by the power utility.

Statement of Conformity

Greenlee Textron products are manufactured in accordance with the international ISO 9000
(2000) series of Quality Management Systems.
The instrument enclosed has been checked and/or calibrated using equipment that is checked
and calibrated to standards that are traceable to the National Institute for Standards and
Technology (NIST).
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