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Eddy-current testing

ТМ-4 Coating Thickness Gauge

Thickness gauge coating ТМ-4Combination Ferrous & Non-Ferrous Instrument TM-4 provides fast, non-destructive, accurate coating measurements in range from 0 to 15 000um. 
ТМ-4 has memory on 5000 results of measurements, RS232 interface for PC connection, a mode of selective averaging of results and possibility of programming to 15 approximate scales, both from the device keyboard, and from the personal computer. 
Thickness gauge has pattern approval sertificate (RU.C.27.003.A № 16287) of measurement instrument and registered in the National register of measurements instruments under №25868-03.

  • Possibility of calibration to 15 approximate scales
  • Adjustable backlight of the screen
  • The mode of selective averaging
  • Memory: 5000 results measurement
  • The mode of the automatic alarm system of defect
  • Mains power: internal LiIon battery
  • The mode of autoswitching-off
  • Possibility to order transducers of various configurations

Basic Delivery Set

  • ТМ-4 main unit
  • Transducer M120 (0-2mm, ferrous materials)
  • RS232 cable
  • Software CD Rom
  • Operating manual
  • Transport bag

Universal Delivery Set

  • Basic Delivery Set
  • Transducer H120 (0-2мм, non-ferrous)


  • М120 (range 0-2mm, ferrous)
  • М150 (range 0,05-5mm, ferrous)
  • М215 (range 2-15mm, ferrous)
  • H120 (range 0-2mm, non-ferrous)
  • H150 (range 0,05-5mm, non-ferrous)
  • H215 (range 2-15mm, non-ferrous)

Related Products

  • Commercial Grade Shim Set КМТ-1 (5 plastic shims)
  • Commercial Grade Shim Set КМТ-2 (7 plastic shims + ferrous or non-ferrous zero plate)

Technical Specification

Coating thickness measurement range
up to 15 000 um with different transducers
Indication accuracy
1, 0.1, 0.01 or 0.001 - is set at programming scales
15 programmable direct from keypad
or by PC scales, up to 10 points for
linear approximation
Software support
Mains power
internal Li-Ion battery
Operating time
not less 30 hours
after 90 sec
Operating temperature
-10 C to +50 C
Base Unit Dimensions (H x W x D)
150 mm x 80 mm x 40 mm
230 g