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 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 Tools, Inc. is certified in accordance with ISO 9001 (2000) for our Quality
Management Systems.
The instrument enclosed has been checked and/or calibrated using equipment that is
traceable to the National Institute for Standards and Technology (NIST).
Maintenance
Electric shock hazard:
Before opening the battery cover or case, remove the test leads from the circuit
and shut off the unit.
Failure to observe this warning could result in severe injury or death.
a. The repair and service of the meter should be accomplished by Greenlee
professional maintenance personnel or authorized departments.
b. Clean the meter case by using dry cloth periodically. Grinding agent and solvent
should not be used.
Battery Installation and Replacement
This product uses 3 AAA 1.5V batteries. Please install or replace the batteries by
following the procedure below:
a. Turn off the meter and remove the probes
b. Remove the screws from the battery cover, remove the battery cover, and
replace the batteries.
c. After installing the batteries, replace the battery cover and secure with screws.
CMF-110 • CMF-118
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