Types of analysis

OELCHECK recommendations

Hydraulics

Recommendation for
Mobile hydraulics 		Recommendation for
Industrial hydraulics
 

Kit 2

  

Kit 4

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
IR index
Particle count ISO 4406,
Cleanliness class
Water with FT-IR (%)

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
IR index
Particle count ISO 4406,
Cleanliness class
Water acc. to Karl Fischer
Neutralisation Number (NN) or AN

Bio hydraulics

Recommendation for
Bio hydraulics
 

Kit 3

  

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Particle count ISO 4406,
Cleanliness class
Density
Water acc. to Karl Fischer
Neutralisation Number (NN) or AN

  

Gear

Recommendation for
Gear
 

Kit 2

  

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
Neutralisation Number (NN) or AN
IR index
Water with FT-IR (%)

  

Engine

Recommendation for
Petrol/Diesel engine
 

Kit 2

  

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Nitration, sulfation
IR index
Water with FT-IR (%)
Dispersancy
Fuel content
Soot, glycol
Base Number (BN)

  

Gas engine

Recommendation for
Gas engine oil 		Recommendation for
Gas engine coolant
 

Gas kit

  

Gas kit

Scope of analysis

Elements with ICP
Visual evaluation
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
IR index
Water with FT-IR (%)
Oxidation
Base Number (BN)
Acid Number (AN)
i-pH value
Nitration, sulfation

Scope of analysis

Elements for coolants
Visual evaluation
Conductivity coolant
Anion content
Density coolant
Refractive index
pH value

Wind energy plant

Recommendation for
Main gear		 Recommendation for
Yaw/Azimuth/Pitch
gear
 

Wind kit

  

Wind kit

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
IR index
Water acc. to Karl Fischer
Neutralisation number (NN)
Cleanliness class ISO (O.P.A.)

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
IR index
Water acc. to Karl Fischer
Neutralisation number (NN)
Recommendation for
Brake/Pitch hydraulics 		Recommendation for
Blade/Main/Generator bearing
 

Wind kit

  

Wind kit

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
Particle count ISO 4406, Cleanliness class
IR index
Water acc. to Karl Fischer
Neutralisation number (NN)

Scope of analysis

PQ index
Visual evaluation
Elements with RDE
Water acc. to Karl Fischer
IR index

Recommendation for
Coolant
 

Wind kit

  

Scope of analysis

Elements for coolants
Visual evaluation
Conductivity coolant
Anion content
Density coolant
Refractive index
pH value

  

Compressor

Recommendation for
Compressor
 

Kit 3

  

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
Neutralisation Number (NN) or AN
Colour index
Water acc. to Karl Fischer
IR index

  

Oil circulation system

Recommendation for
Routine analysis 		Recommendation for
Damage analysis
 

""

Kit 3

  

""

Kit 5

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
Neutralisation Number (NN) or AN
Water acc. to Karl Fischer
IR index

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
Neutralisation Number (NN) or AN
Water acc. to Karl Fischer
IR index
Cleanliness class ISO (O.P.A.)
Particle number and size

Heat transfer system

Recommendation for
Standard analysis 		Recommendation for
Big system analysis
 

""

Kit 3

  

""

Kit 5

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
Neutralisation Number (NN) or AN
Flash point (closed)
IR index
Water with FT-IR (%)

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
Neutralisation Number (NN) or AN
Flash point (closed)
IR index
Water with FT-IR (%)
Carbon residue

Refrigeration unit

Recommendation for
Refrigeration unit
 

VK 2

  

Scope of analysis

Elements with ICP
PQ index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Visual evaluation
Oxidation
Neutralisation Number (NN) or AN
Base Number (BN)
IR index
Water acc. to Karl Fischer

  

Hydraulic fluids HFC

Recommendation for
Hydraulic fluids HFC
 

Kit 3

  

Scope of analysis

Elements with RDE
PQ index
Viscosity 40 °C
Visual evaluation
pH value
Water acc. to Karl Fischer
Reserve alkalinity

  

Transformer

Recommendation for
Transformer
 

ISO 4

  

Scope of analysis

Elements with ICP
Viscosity 40 °C
Dissolved gases (DGA)
Electric breakdown voltage
Water acc. to Karl Fischer
Colour index
Oxidation
Neutralisation number (NN)
Dielectric dissipation factor
Density
Interface tension

  

Turbine

Recommendation for
Turbine gear		 Recommendation for
Control circuit for turbines
 

2T

  

4T

Scope of analysis

Elements with ICP
PQ index
Colour index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Phenolic inhibitor
Neutralisation number (NN)
Water with FT-IR (%)

Scope of analysis

Elements with ICP
PQ index
Colour index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Phenolic inhibitor
Neutralisation number (NN)
Water acc. to Karl Fischer
Particle count ISO 4406, Cleanliness class 
Recommendation for
Turbine - intermediate check		 Recommendation for
Water turbine
 

""

5T

  

6T

Scope of analysis

Elements with ICP
PQ index
Colour index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Phenolic inhibitor
Neutralisation number (NN)
Water with FT-IR (%)
Air release time 

Scope of analysis

Elements with ICP
PQ index
Colour index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Phenolic inhibitor
Neutralisation number (NN)
Water acc. to Karl Fischer
Water separation
Particle count ISO 4406, Cleanliness class
Oxidation stability (RULER) 
Recommendation for
Gas turbine		 Recommendation for
Steam turbine
 

7T

  

8T

Scope of analysis

Elements with ICP
PQ index
Colour index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Phenolic inhibitor
Neutralisation number (NN)
Water acc. to Karl Fischer
Air release time
Particle count ISO 4406,
Cleanliness class
Oxidation stability (RULER)
Foaming tendency seq. I 

Scope of analysis

Elements with ICP
PQ index
Colour index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Phenolic inhibitor
Neutralisation number (NN)
Water acc. to Karl Fischer
Air release time
Particle count ISO 4406, Cleanliness class
Oxidation stability (RULER)
Foaming tendency seq. I
Water separation
Recommendation for
Turbine revision		 Recommendation for
New turbine filling
 

9T

  

10T

Scope of analysis

Elements with ICP
PQ index
Colour index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Phenolic inhibitor
Neutralisation number (NN)
Water acc. to Karl Fischer
Air release time
Particle count ISO 4406,
Cleanliness class
Oxidation stability (RULER)
Foaming tendency seq. I
Water separation
MPC test

Scope of analysis

Elements with ICP
PQ index
Colour index
Viscosity 40 °C
Viscosity 100 °C
VI (viscosity index)
Oxidation
Phenolic inhibitor
Neutralisation number (NN)
Water acc. to Karl Fischer
Air release time
Particle count ISO 4406, Cleanliness class
Oxidation stability (RULER)
Foaming tendency seq. I
Water separation
MPC test
Corrosion protection (steel)

Grease

Recommendation for
Grease
 

""

Kit 5

  

Scope of analysis

Elements with RDE
IR spectroscopy
PQ index
Water acc. to Karl Fischer
Penetration value

  

Coolant

Recommendation for
Coolant
 

Coolant Kit
Advanced

  

Scope of analysis

Elements for coolants
Visual evaluation
Conductivity coolant
Anion content
Density coolant
Refractive index
pH value

  

Brake fluid

Recommendation for
Brake fluid
 

8HB

  

Scope of analysis

Elements with RDE
Visual evaluation
PQ index
Viscosity 100 °C
VI (viscosity index)
Oxidation
Density
pH value
Boiling point

  
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