Page 10 - Shroeder - Filter Systems

Definition of Fluid Contamination Management

and the Technical Cleanliness Process

Definitions
Fluid Power System
A power transmission system that uses fluids to transmit power
Basic Contamination
Quantity of contamination present subsequent to assembly
Ingress Contamination
Particulate ingressed during operation of a fluid power system
Initial Damage | “Start-Up”
Damage to component surfaces caused during function testing/commissioning/assembly
of systems
Fluid Contamination Monitoring
Analysis of a fluid power system measures ingressesd particulate levels
Online Measurement (Real Time Monitoring)
Measurement process which the sample to be analyzed is process fed to a measurement
device directly from the system
Offline Measurement
Measurement process in which the sample is taken from the process system and
analyzed elsewhere, e.g. taking an oil sample and sending it in to a laboratory
Contamination Management and Technical Cleanliness
Monitoring and optimization of cleanliness, from component design to the component assembly,
to the assembly and operation of the system

Technical As Figure 5 shows, the level of contamination without using the Technical Cleanliness Process is higher
Cleanliness throughout system operation as compared to a system in which the technical is employed, the result being
that more initial damage may be caused to surfaces.

Figure 5. Cleaning of a Fluid Power System With and Without Contamination Management

Microscope images show typical particle samples, containing fine particles, as they occur in fluid power
systems. (Figure 6)
An average healthy human eye can see items down
to approximately 40 µm in size. Particle analyses
are conducted using a microscope or particle
counters in fluid power systems employing the light
extinction principle. (Figure 7)

Figure 6. Typical Particle Samples

8 SCHROEDER INDUSTRIES