I would like to know the acceptable limits if the oil contamination & also want to know, what are the inhouse parameters to find the contamination.

Hi,

this Noria site has some excellent information on these areas,

We also have a simple "How to Oil Sample " guide pdf booklet we can email you, this is set up for sampling factories as well as mobile equipment,
at the end of the "booklet" there is a guide as to what tests and limits for hydraulics,

this an info booklet to assist,
given freely with all care and no responsibility,

email us : lab@rttech.com.au

regards


Rob S

Dear Shrikant

Let me know your e mail and I will send you some information

Regards

Reuven ihsil@hotmail.com

With hydraulic systems usually with large main tank, the main/only way of checking for contamination is by Particle count.
Simplifying the particle count results by using codes for cleanliness ranges by either NAS or ISO codes.(NAS Range 1-12 1=v.clean-12=v.dirty)
The pressure of the system and components in the system then dictate a target cleanliness code.
Target cleanliness is often shown within the maintenance section of the user manual or typical values available via Noria publications etc

Srikant,
Two types of measaurements are available for particulate contamination
1. Gravimetric method (weight of contaminants)This is generally applicable for highly contaminated fluids and the precision is less.
Method ISO 4405:1991
2. Particle count method
Here, the different sizes of particle are counted, classified based on the size and then compaered with the respective codes
Methods ISO 4406:1999, NAS 1638, SAE As 4059

Regards

APG