Page 226 - Parker - Hydraulic and Lube Filtration Products

Fluid Analysis

Par-Test ™

SAMPLING PROCEDURE
Obtaining a fl uid sample for analysis II. Systems without a ists, locate a fi tting which can be easily
involves important steps to make sure you sampling valve opened to provide turbulent fl ow (tee or
are getting a rep re sen ta tive sample. Often There are two locations to obtain a sample elbow).
erroneous sampling pro ce dures will dis guise in a system without a sampling valve: in-tank 3. Flush the valve or fi tting sample point
the true nature of system cleanliness levels. and in the line. The pro ce dure for both fol- with a fi ltered solvent. Open valve or
Use one of the fol low ing methods to lows: fi tting and allow adequate fl ushing.
obtain a rep re sen ta tive system sample. (Take care to allow for this step. Direct
A. In the Tank Sampling
I. For systems with a 1. Operate the system for at least 1/2 hour. sample back to tank or into a large
sampling valve container. It is not necessary to discard
2. Use a small hand-held vac u um pump to
A. Operate system for at least 1/2 hour. extract sample. Insert sampling device this fl uid.)
B. With the system operating, open the into the tank to one half of the fl uid height. 4. Place in an approved, pre-cleaned
sample valve al low ing 200 ml to 500 You will probably have to weight the end sample bottle under the stream of fl ow
ml (7 to 16 ounc es) of fl uid to fl ush the of the sampling tube. Your objective is to per sam pling valve methods.
sampling port. (The sample valve design obtain a sample in the middle portion of 5. Cap sample bottle im me di ate ly.
should provide turbulent fl ow through the tank. Avoid the top or bottom of the 6. Tag with important in for ma tion per the
the sam pling port.) tank. Do not let the syringe or tubing sampling valve method.
C. Using a wide mouth, pre-cleaned came in contact with the side of the tank. Note: Select a valve or fi tting
sampling bottle, re move the bottle cap 3. Put extracted fl uid into an approved, pre- where the pressure is limited to
and place in the stream of fl ow from the cleaned sam ple bottle as described in the 200 PSIG (14 bar) or less.
sampling valve. Do NOT “rinse” out the previous sam pling valve method.
bottle with initial sample. 4. Cap immediately.
D. Close the sample bottle im me di ate ly. 5. Tag with information as described in
Next, close the sampling valve. (Make sampling valve method.
prior provision to “catch” the fl uid while
removing the bottle from the stream.) B. In-line Sampling
E. Tag the sample bottle with pertinent data; 1. Operate the system for at least 1/2 hour.
in clude date, machine number, fl uid sup- 2. Locate a suitable valve in the system
plier, fl uid number code, fl uid type, and where turbulent fl ow can be obtained (ball
time elapsed since last sample (if any). valve is pre ferred). If no such valve ex-

ON-SITE FLUID ANALYSIS PRODUCT

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