About Coating Thickness Gauge – MiniTest 70

The MiniTest 70 range of Coating Thickness Gauges are small, lightweight and economical.  The instrument has an integrated sensor for those looking for a quick and accurate measurement of non-magnetic coatings on steel and insulating coatings on non-ferrous metal.  The instrument is widely used in the Automotive industry on the shop floor for quick and easy measurements for paint layer thickness (MiniTest 70 E-FN).

The MiniTest 70 coating thickness gauge enables non destructive measurement of

  • non-magnetic coatings (paint, synthetic materials, chromium etc.) on a ferromagnetic substrate (steel)
  • insulating coatings (varnish, enamel, synthetic material etc.) on conductive substrates (aluminium, copper, austenitic stainless steel) (only in the FN type models).

Available in 4 versions:

Minitest 70F:  With statistics display (number of readings taken, mean values, standard deviation, maximum, minimum). Suited only for ferromagnetic substrates (e.g. steel). Measuring range 0 to 3 mm / 118 mils. Enables 1-point and 2-point calibrations.

MiniTest 70 FN:  With statistics display (number of readings taken, mean values, standard deviation, maximum, minimum).  Suited for ferromagnetic substrates (e.g. steel) and also for non-ferromagnetic substrates (non-ferrous metals like aluminium, brass etc.).  Measuring range 0 to 3 mm / 118 mils on steel substrates and 0 to 2.5 mm / 95 mils on non-ferrous metals.  Enables 1-point and 2-point calibrations.

MiniTest 70 B-FN:  Suited for ferromagnetic substrates (e.g. steel) and also for non-ferromagnetic substrates (non-ferrous metals like aluminium, brass etc.).  Measuring range 0 to 3 mm / 118 mils on steel substrates and 0 to 2.5 mm / 95 mils on non-ferrous metals.  Enables 1-point calibrations.

MiniTest 70 E-FN:  Suited for ferromagnetic substrates (e.g. steel) and also for non-ferromagnetic substrates (non-ferrous metals like aluminium, brass etc.).  Measuring range 0 to 3 mm / 118 mils on steel substrates and 0 to 2.5 mm / 95 mils on non-ferrous metals.

Features & Benefits

  • Accurate coating measurement of up to 3mm(F range) and 2.5 mm(N range)
  • Dual sensor for automatic substrate identification and setting the suitable measuring principle: eddy currents or magnetic induction (not in model F)
  • Wear-resistant probes with long service life
  • Lightweight: only 80 grams
  • Dual sensor for automatic identification of the substrate (FN model). According to the substrate, it adjusts to the appropriate measuring principle: magnetic induction or eddy currents principle.
  • Quick statistics mode to calculate the number of readings, average, standard deviation and min., max. value
  • lightweight: 80 grams / 2.8 oz only

Applications

Non destructive measurement of

  • non-magnetic coatings (paint, synthetic materials, chromium etc.) on a ferromagnetic substrate (steel)
  • insulating coatings (varnish, enamel, synthetic material etc.) on conductive substrates (aluminium, copper, austenitic stainless steel) (only in the FN type models)

Specifications

Property Value
Measuring range N: 0 mm – 2.5 mm/ 100 mils
F: 0 mm – 3 mm/ 120 mils
Measuring principle magnetic-induction/eddy currents
Signal processing Sensor integrated 32-bit signal processing (SIDSP®)
Accuracy
  • ± (1.5 μm + 3% of reading) with 1-point calibration
  • ± (0.06 mils + 3% of reading) with 1-point calibration
  • ± (1.5 μm + 2% of reading) with 2-point calibration
  • ± (0.06 mils + 2% of reading) with 2-point calibration
Repeatability ± (1 μm + 1% of reading) / ± (0.04 mils + 1% of reading)
Low range resolution 0.5 µm / 0.02 mils
Minimum curvature radius convex 5 mm / 0.2”
Minimum curvature radius concave 40 mm / 1.60”
Minimum substrate thickness F: 0.5 mm – 0.02”
N: 0.04 mm – 0.0016”
Measuring units metric/imperial switchable
Calibration standard, 1-point and 2-point calibration
Statistics n, x, s, Min, Max
Operating temperature -10 °C to 60 °C / 14 °F to 140 °F
Storing temperature -20 °C to 70 °C / -4 °F to 158 °F
Power supply 1x AA (Mignon)-battery
International standards DIN EN ISO 1461, 2064, 2178, 2360, 2808, 3882, ASTM B 244, B 499, D7091, E 376
Dimensions approx. 157 mm length, Ø 27 mm; 5.2″ length, Ø 1.06″
Weight ~ 80 grams, 2.8 oz

All Downloads

Filename Size Download
MiniTest 70 Product Brochure 0.39MB Download

Ordering Information

Part Number Description
82-010-0020 MiniTest 70 F
80-125-0000 MiniTest 70 FN
80-125-0600 MiniTest 70 B-FN
80-125-0900 MiniTest 70 E-FN

Each MiniTest 70 instrument with integrated sensor is supplied with

  • Operating instructions
  • 1 AA battery, type LR06
  • Zero reference plate(s)
  • Control standard
  • Belt pouch
  • Last updated: May 2024
  • Version: 1.0

Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.