How to take a representative and exact sample and why is this so important?

For the analysis it is very important to receive a representative and exact sample from the main flow.

The sample from the main flow is often taken during the normal operation of the system. Therefore, the oil is very hot. . From a hot sample however, the low-boiling components escape provided the sample contacts the atmosphere. The sample will then include less low-boiling components and in a following examination the heat transfer oil will appear better than it really is.

Therefore, the sample must be taken in a way that it contacts the ambient air until it has cooled down enough.