Specifications - Extech Instruments CG304 User Manual

Specifications

Measurement principle
Measuring range
1
Accuracy
(% of reading)
Resolution
Min. curvature radius
Diameter of Min. area
Basic critical thickness
Industrial standards
Operating Temperature
Operating Relative
Humidity (R.H.)
Power
Dimensions
Weight
1 Accuracy note: Accuracy statement applies to use on a flat surface, with a zero calibration
performed and with the meter stabilized at ambient temperature. The accuracy of the reference
films or any reference standards should be added to measurement results.
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Ferrous
Magnetic induction
0~2000μm
0~78.7mils
0~1000μm: ±(2% + 2μm)
1000μm ~2000μm: (±3.5%)
0~39.3mils: ±(2% + 0.08mils)
39.3mils ~78.7mils: (±3.5%)
0~100μm: (0.1μm)
100μm ~1000μm: (1μm)
1000μm ~2000μm: (0.01mm)
0~10mils: (0.01mils)
10mils~78.7mils: (0.1mils)
59.06mils (1.5mm)
275.6mils (7mm)
19.69mils (0.5mm)
Conforms to GB/T 4956-1985, GB/T 4957-1985, JB/T 8393-1996, JJG
889-95, and JJG 818-93
0°C~40°C (32°F~104°F)
20%~90% Relative Humidity
2 x AAA batteries with Auto Power OFF after 3 minutes
120 x 62 x 32 mm (4.7 x 2.4 x 1.25")
175g (6.17 oz.)
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www.extech.com
Non-Ferrous
Eddy current principle
0~2000μm
0~78.7mils
0~1000μm: ±(2% + 2μm)
1000μm ~2000μm: (±3.5%)
0~39.3mils: ±(2% + 0.08mils)
39.3mils ~78.7mils: (±3.5%)
0~100μm: (0.1μm)
100μm ~1000μm: (1μm)
1000μm ~2000μm: (0.01mm)
0~10mils: (0.01mils)
10mils~78.7mils: (0.1mils)
118.1mils (3mm)
196.9mils (5mm)
11.81mils (0.3mm)
ISO-9001 Certified
13 CG304-en-GB_v2.3 5/17