Greenlee CM-330 Manuel D'instructions page 8

Accuracy
Refer to "Specifications" for operating conditions and temperature
coefficient.
Accuracy is specified as follows: ± (a percentage of the reading + a fixed
amount) at 23 °C ± 5 °C (73.4 °F ± 9 °F), 0% to 80% relative humidity.
Accuracy Table
Measurement Range
19.99 A
199.9 A
400 A
Specifications
Display: 3-1/2-digit LCD (1999 maximum reading)
Sampling Rate: 2.5 per second
Overrange Indication: "OL" appears on the display
Jaw Opening: 30 mm (1.18")
Maximum Conductor Diameter: 27 mm (1.06")
Measurement Category: Category III, 600 V
Temperature Coefficient: 0.2 x (specified accuracy) per °C
below 18 °C or above 28 °C
Operating Conditions:
0% to 80% Relative Humidity: 0 °C to 30 °C (32 °F to 86 °F)
0% to 75% Relative Humidity: 30 °C to 50 °C (86 °F to 112 °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
Remove battery
Pollution Degree: 2
Battery: 9-Volt battery (NEDA 1604, JIS 006P or IEC 6LF22)
8
Accuracy
± (3.0% + 0.05 A)
± (2.0% + 0.5 A)
± (2.0% + 5 A)
Frequency Range
50 to 60 Hz
50 to 60 Hz
50 to 60 Hz