Measurement Categories - Greenlee CM-450 Manuel D'instructions

Specifications
Display: 3-3/4-digit LCD (4000 maximum reading)
Sampling Rate: 3 per second
Overrange Indication: "OL" appears on the display
Maximum Conductor Diameter: 26 mm (1.02")
Measurement Category: Category III, 600 V
Temperature Coefficient: 0.15 x (specified accuracy) per °C below 18 °C or above
28 °C
Operating Conditions:
At 0% ≤ 80% RH: 5 °C to 31 °C (41 °F to 86 °F)
Decreasing linearly to 50% RH at 40 °C (104 °F)
Altitude: 2000 m (6500') maximum
Indoor use only
Storage Conditions: -20 °C to 60 °C (-4 °F to 140° F), 0% to 80% relative
humidity with battery removed
Pollution Degree: 2
Battery: 3 V standard button battery (IEC-CR2032; ANSI-NEDA-54004LC)
CENELEC Directives: The instruments conform to CENELEC Low-voltage directive
2006/95/EC and Electromagnetic compatibility directive 2004/108/EC
Safety: Double insulation to IEC/UL/EN61010-1 Ed. 3.0, IEC/EN61010-2-032 Ed.
3.0, IEC/EN61010-2-033 Ed. 1.0, IEC/UL/EN61010-031 Ed. 1.1 and CAN/CSA-
C22.2 No. 61010-1-12 Ed. 3.0
All Terminals: CAT III 600 V AC/DC

Measurement Categories

These definitions were derived from the international safety standard for insula-
tion 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 equip-
ment, 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.
CM-450
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