CHRIS-MARINE®

Coating Thickness Measurement / CTM

High precision coating thickness measurement on magnetic and non-magnetic base materials.

  • Easy-to-use condition-based maintenance and wear monitoring of piston rings in 2-stroke engines
  • Measures non-magnetic coatings on magnetic or non-magnetic base materials
  • Automatically detects whether the base material is magnetic or non-magnetic
  • Compatible with LDM, trend-plotting software included
  • Reliable and non-destructive measurements even in hard-to-reach areas

Coating Thickness Measurement - CTM

Coating Thickness Measurement - CTM

Coating Thickness Measurement - CTM

The graph shows how the estimated time to next piston overhaul can be predicted using the CTM on the top piston ring of a modern 2-stroke engine. The piston ring wear rate varies from unit to unit, as a result from production tolerances and operating conditions giving opportunity for safer and less costly overhauling by practising condition-based monitoring with the CTM.

The graph shows how the estimated time to next piston overhaul can be predicted using the CTM on the top piston ring of a modern 2-stroke engine. The piston ring wear rate varies from unit to unit, as a result from production tolerances and operating conditions giving opportunity for safer and less costly overhauling by practising condition-based monitoring with the CTM.

CTM

CTM

Chris-Marine’s coating thickness measurement tool CTM measures coating thickness with high precision on magnetic and non-magnetic base materials.

The coating thickness measurement tool measures the remaining life time of coated piston rings:
-Liner time scale: ~1000 Rh
-Measurement time: ~15 minutes/liner

  • CTM is ideal for condition based monitoring of piston rings in 2-stroke engines.
  • It measures non-magnetic coatings on magnetic base materials, such as chromium plated or plasma coated cast iron.
  • It also measures non-magnetic coatings on non- magnetic base materials, such as plastic coated stainless steel.
  • CTM automatically detects whether the base material is magnetic or non-magnetic.
  • The tool is small enough to make reliable measurements even in hard to reach areas
  • CTM is user-friendly, sturdy and ideal for uncomplicated, reliable and non-destructive in-situ measurements

Learn more about Cylinder Condition Monitoring & Reconditioning

Technical Specification
Measuring principle Magnetic induction & Eddy current
Thickness range 0 – 2000 μm
Accuracy Magnetic:
up to 75 μm ± 1.5 μm
75 to 1000 μm: < 2%
1000 to 2000 μm: < 3%
Eddy current:
up to to μm: ± 1 μm
50 to 1000 μm: < 2%
1000 to 2000 μm: < 3%
Operating temperature 5-60°C
Data memory 1000 measurements
Weight 132 G
Battery 2 X 1,5V
Dimensions/Weight 140 x 50 x 70mm/400g

Often bought together with

Liner Diameter Measurement / LDM

Instrument used to take liner diameter measurements without removing the cylinder head or valve housing.

Piston Ring Expander Unistress / UPRE

The unistress piston ring expander makes sure that is is safe and easy to change piston rings.

Cylinder Liner Honing Machine, pneumatic / HON S

Honing machine for restoration of medium speed engine cylinder liner geometry and surface structure.

Wear Edge Milling Machine / VKS

Portable machine for safe removal of wear edges in cylinder liners.