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  • Automatic substrate recognition
  • Magnetic induction for ferrous substrates
  • Eddy current measurement for non-ferrous substrates
  • Easy-to use menu system
  • Two measuring modes: Single and Continuous
  • Two working modes: Direct and Group
  • Memory stores 400 readings: 80 Direct and 320 Group
  • User-programmable high/low alarms
  • Min/Max/Average, one or two point calibration

The Extech CG204 coating thickness tester features dual technology that provides automatic recognition for ferrous and non-ferrous substrates. This tester uses magnetic induction for ferrous substrates and eddy current measurement for non-ferrous substrates. With an easy-to-use menu system, the CG204 offers two measuring modes, single and continuous, as well as two working modes, direct and group.

With the ability to store up to 400 readings (80 direct and 320 group), the Extech CG204 coating thickness tester also features use-programmable high/low alarms, min/max/average and one or two point calibration. A USB interface, as well as included software, makes downloading and analyzing data from the CG240 simple.

The Extech CG204 coating thickness tester ships complete with:

  • Two AAA batteries
  • USB cable
  • Software
  • Calibration iron
  • Calibration aluminum
  • Precision standards
  • Pouch case

Extech CG204 Coating Thickness Tester specifications:

Sensor Probe Ferrous Non-Ferrous
Working Principle Magnetic Induction Eddy Current
Measuring Range 0 to 1250 µm
0 to 49 mils
0 to 1250 µm
0 to 49 mils
Basic Accuracy ±3% ±3%
Resolution 0.1 µm (0.004 mils) 0.1 µm (0.004 mils)
Minimum Curvature Radius 1.5 mm (59.06 mils) 3 mm (118.1 mils)
Minimum Diameter 0.5 mm (19.69 mils) 0.3 mm (11.81 mils)
Minimum Thickness 0.5 mm (19.69 mils) 0.3 mm (11.81 mils)
Dimensions 4.7 x 2.4 x. 1.25" (120 x 62 x 32 mm)
Weight 6.17 oz (175 g)
Extech CG204-REF Calibration References
Replacement reference films for CG204 coating thickness tester (10 sets)