We are in the preliminary stages of starting an oil analysis program. Regarding sampling of closed loop ciculating hydraulic system, Noria recommends sampling on return line, at elbow for maximum data density. Most of our return line elbows are butt-weld elbows.
Ideas for installing pressurized line minimess sampling ports/valves (at the elbow) include:
1. drill/tap a minimess port directly into the elbow
2. or cut the line and re-fit with a threaded elbow which would already have minimess port/valve installed
However both of these options require modifiying existing hydraulic system piping.
Sampling objective is primary for routine condition monitoring.
Can anyone comment from experience on above mentioned options and/or other installation/sampling methods and the successes/failures for closed loop hydraulic system sampling?
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