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Coating Thickness Gauge | MINITEST 650

Coating Thickness Gauge | checkline MINITEST 650
It is specially designed to work in rough environments and on abrasive surfaces,
e.g. shot-blasted steel, and plasma spray-coated surfaces.


3 Models Available
   MiniTest 650 F – Magnetic-induction sensor for measurements on steel substrates
   MiniTest 650 N – Eddy currents sensor for measurements on non-ferrous metals
   MiniTest 650 FN – Dual sensor for measuring both, steel and non-ferrous metals

The rugged coating thickness gauge MiniTest 650 follows its long-time proven predecessor model MiniTest 600 in the line of gauges with a fixed external probe offering measurement of all non-magnetic coatings on steel and all insulating coatings on non-ferrous metals. It is specially designed to work in rough environments and on abrasive surfaces, e.g. shot-blasted steel, and plasma spray-coated surfaces.

The MiniTest 650 is the ideal tool for any measuring task in the finishing industry. The rugged and easy-to-handle thickness gauge combines extended mechanical life on the one hand and high accuracy on the other hand to meet the requirements of any professional user in the shipbuilding, automotive, bridge building, construction or other industry.

The battery-operated gauge features a backlit display and a one-meter sensor cable. The newly developed one-pole sensor is made of a wear and tear-resistant carbide material to ensure a virtually unlimited life cycle under normal use. Optimal ram and impact protection is provided through the rubber-rimmed casing. Via a USB interface, the MiniTest 650 can be connected to a PC for online measurements or the display of statistics.


      • Resolution of 0.01 mils (1 micron)
      • Impact-protected housing for use in tough environments
      • Probe with wear-resistant carbide metal tip
      • Automatic identification of the substrate material
      • High repeatability
      • For fast and precise measurements of non-magnetic coatings on steel and insulating coatings on non-ferrous metals
      • External sensor
      • USB-interface to transfer on-line measurements or statistics to a PC
      • Statistical evaluation of readings (mean value, standard deviation, number of readings, minimum and maximum)
      • Coating thickness measurement up to 2 or 3 mm
      • Data transfer program Msoft7000 basic edition
      • DIN EN ISO 1461, 2178, 2360, 2808, 3882, ASTM B 244, B 499, D7091, E 376
      • Made in Germany


Measuring RangeModel F (steel)
0 – 3000 μm / 120 mils
Model N (non-ferrous metal
0 – 2000 μm / 80 mils
Model FN (dual sensor)
0 – 2000 μm / 80 mils
Measuring Uncertainty± (2 % of reading + 2 μm) / ± (2 % of reading + 0.08 mils)
Resolution (mils)0.01 mils (up to 9.99 mils) / 0.1 mils (over 10.0 mils)
Resolution (microns)1 micron
Minimum curvature radius convex5 mm / 0.2“
Minimum curvature radius concave25 mm / 1“
Minimum measuring areaØ 20 mm / 0.8“
Minimum base thickness:0.5 mm / 20 mils (F) / 50 μm / 2 mils (N)
Display4-digit screen data (11 mm)
Measuring unitsμm – mils user selectable
CalibrationStandard, 1-point and 2-point calibration
StatisticsCalculated from maximum 9,999 readings, mean value, standard deviation, number of readings, minimum and maximum
Power supply3 Micro AAA batteries (for more than 10,000 readings)
Dimensions and weightHousing: 70 mm x 122 mm x 32 mm / 2.7” x 4.8” x 1.26”
Sensor: Ø 15 mm x 62 mm / Ø 0.60” x 2.44”; 225 grams / 7.93 ozs
Ambient temperatureGauge: 0 to 50 °C / 32 ° to 122 °F
Sensor: -10 ° to 70 °C / 14 ° to 158 °F