Electrical Specifications - Extech Instruments CG104 User Manual

Specifications

Electrical Specifications

Measurement
principle
Response time
Detectable Substrate
Materials
Measuring range
Accuracy 1
(% of reading)
Resolution
Basic critical thickness
Industrial standards
Temperature
Coefficient
1 Accuracy note: Accuracy statement applies to use on a flat surface, with a zero and a
calibration performed near the thickness of the film to be measured, with an identical base
metal and with the meter stabilized at ambient temperature 18 to 28°C (64 to 82°F).
The accuracy of the reference films or any reference standards should be added to
measurement results.
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Ferrous
Magnetic induction
One second
Iron, Steel
0~2000μm
0~80.0mils
0~199μm: ±(10 dgts)
200~1000μm: (±3.0% + 10 dgts)
1001~1999μm: (±5.0% + 10 dgts)
0~7.8mils: ±(4dgts)
7.9~39.0mils: ±(3% + 4 dgts)
39.1~80.0mils: (±5% + 4 dgts)
0~100μm: (1μm)
100μm~1000μm: (1μm)
1000μm~2000μm: (1μm)
0~10mils: (0.1mils)
10mils~80mils: (0.1mils)
0 to 80mils (0 to 2000um)
Conforms to GB/T 4956-1985, GB/T 4957-1985, JB/T 8393-1996, JJG
889-95, and JJG 818-93
0.1 times the applicable accuracy specification per °C from 18°C to
28°C (64°F to 82°F)
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Non-Ferrous
Eddy current principle
One second
Copper, Aluminum, Zinc,
Bronze, Brass, and others
0~1020μm
0~40.0mils
0~199μm: ±(10 dgts)
200 ~1020μm: (±3.0% + 10dgts)
0~7.8mils: ±(4 dgts)
7.9~40.0mils: (±3.0% + 4 dgts)
0~100μm: (1μm)
100μm ~1020μm: (1μm)
0~10mils: (0.1mils)
10mils~40.0mils: (0.1mils)
0 to 40mils (0 to 1020um)
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