Fluid Sampling Set - FES
Sampling
HYDAC Filtertechnik GmbH
en
Page 13
Bewa FES 3160266a en.doc
2008-05-29
This method involves the taking of bottle samples of hydraulic fluid from operating
fluid power systems via sampling valves provided for that purpose. The sampling
should be representative of the operating condition of the hydraulic system.
Therefore, the samples should be taken from the same point in the system each
time, to enable comparisons to be made. Furthermore, it is important that significant
operational demands must be made on the system during the period that the
sample is being taken.
1. The dynamic sampler (sampling valve) should always be protected with a
cap when it is not in use.
2. The sampling valve (e.g. nipple) and the surrounding parts must be carefully
cleaned.
3. Take one of the two sample bottles provided. Make sure that there is no
possibility of contamination in the area of the sealing lock. Undo the seal on
the sample bottle, but do not remove it. Set the sample bottle down in easy
reach.
4. Remove the protective cap from the sampling valve (e.g. nipple) and allow
an amount of fluid that is at least twice the volumetric size of the sampling
line to drain out into a container. This is necessary in order to rinse out the
sampling system. A rinsing volume of 0.5 litres of operating fluid has proven
to be sufficient in everyday practice.
5. Take a container and guide it into the stream of fluid without interrupting it.
Replace the container with the sample bottle without interruping the stream
of fluid. Remove a sufficient amount of sample (at least 150 ml) for the
subsequent analysis. Carefully seal the sample bottle at once.
6. Replace the sample bottles once again with the container and close the
sampling valve. Put the sealing cap back on the sampling valve.
7. Label the sample as describe under Chapter 0
