Page 35 - Parker - The Handbook of Hydraulic Filtration

Fluid Analysis

There is a National Fluid Power
Association (NFPA) standard for
extracting fluid samples from a
reservoir of an operating hydraulic
fluid power system.(NFPA T2.9.1-1972).
There is also the American National
Standard method (ANSI B93.13-1972)
for extracting fluid samples from the
lines of an operating hydraulic fluid
power system for particulate contami-
nation analysis. Either extraction
method is recommended.

In any event, a representative fluid
sample is the goal. Sampling valves
should be opened and flushed for at
least fifteen seconds. The clean sample
bottle should be kept closed until the
fluid and valve is ready for sampling.
The system should be at operating tem-
Portable particle counter
perature for at least 30 minutes before
the sample is taken.
Portable Particle Counter ▼ Viscosity
A most promising development in fluid ▼ Neutralization number A complete procedure follows in
analysis is the portable laser particle ▼ Water content the appendix.
counter. Laser particle counters are ▼ Particle counts
comparable to full laboratory units in
▼ Spectrometric analysis (wear
counting particles down to the 2 + F FLLUUIIDD AANNAALLYYSSIISS RREEPPOORRTT
metals and additive analysis
micron range. Strengths of this recent SAMPLE CODE: 1034 DATE: 06-01-94 PARTEST Fluid Analysis Service
Parker Hannifin Corporation
XYZ Corporation
reported in parts per million, 12345 Middleton Rd. 16810 Fulton County Road #2
Metamora, OH 43540
Anywhere USA 41114
technology include accuracy, repeata- Attn: Tele:(419)644-4311
Fax:(419)644-6205
or ppm) S SAAMMPPLLEE DDAATTAA
bility, portability, and timeliness. A test COMPANY NAME: XYZ Corporation SAMPLE DATE: 06-01-94
Hydraulic System
HOURS (on oil/unit):
100 / 100
SYSTEM TYPE:
▼ Trending graphs EQUIPMENT TYPE: LOADER SYSTEM VOLUME: 20 L
MACHINE ID:
x1111
FLUID TYPE:
typically takes less than a minute. FILTER ID: CITGO AW 46
ANALYSIS PERFORMED: AI-BSTV4 (W)
Laser particle counters will generally ▼ Photo micrograph A AUUTTOOMMAATTIICC PPAARRTTIICCLLEE CCOOUUNNTT SSUUMMMMAARRYY W WAATTEERR 10 7 5.0 4.0 I ISSOO CCHHAARRTT RANGE CODE 30 29
F FRREEEE
Cleanliness
Counts per ml.
Size
Code P PRREESSEENNTT 3.0
> 2 µm 353242.0 2.0 1.5 28
give only particle counts and cleanli- ▼ Recommendations > > 10 5 µm µm 34434.0 26/22/14 YES 10 6 5.0 4.0 27 26
2342.0
> > 15 25 µm µm 154.0 17.0 X NO N 3.0 2.0 1.5 25
ness classifications. Water content, > 50 µm 1.0 u m b 10 5 5.0 4.0 24 23
Mag.: 100x P PHHOOTTOO AANNAALLYYSSIISS Scale: 1 div = 20 µm e 3.0 2.0 22
Vol.: 20 ml
r 1.5 21
viscosity, and spectrometric analysis In taking a fluid sample from a o 10 4 5.0 20
f
3.0 4.0 19
p a 2.0 1.5 18
tests would require a full laboratory system, care must be taken to r t 103 5.0 4.0 17 16
c i l 3.0 2.0 1.5 15
analysis. make sure that the fluid sample e s 10 2 5.0 14 13
3.0 4.0 12
p 2.0
e 1.5 11
is representative of the system. m r 10 1 5.0 4.0 10 9
Laboratory Analysis To accomplish this, the fluid > l 10 0 3.0 2.0 1.5 8 7
i s 5.0 4.0 3.0 6 5
z e 2.0 1.5 4
The laboratory analysis is a complete container must be cleaned W A R REEMMAARRKKSS N G 10 -1 5.0 3
I
N
R
1. The recommended CLEANLINESS Code is not met. 4.0 3.0 2
2.0 1.5 1
Clean-up maintenance may be warrant.
look at a fluid sample. Most qualified before taking the sample and 2. Dotted graph line indicates recommended ISO Code level. 10 -2 2 5 10 15 SIZE (microns) 40 50 60 80 100
20 25 30
laboratories will offer the following the fluid must be correctly
tests and features as a package: extracted from the system. Laboratory Analysis
33