- #1
James125
- 19
- 0
I want to sample exhaust gas just behind a Catalyst. The problem being the gas varies across the area of the brick so a normal sample probe could read high or low.
The general idea is to use a tube with holes in across the area of the brick, however I'm not sure what size to make the holes as too large and most of the flow will come from the nearest edge of the brick. Presumably the holes will need to get larger the further you go along the tube. But what size to make the holes I'm not sure how to calculate.
I know the length of the sample probe area ~150mm and the flow of the sampling machine. ~0.2g/s Also I know the inside diameter of the probe ~6mm
The general idea is to use a tube with holes in across the area of the brick, however I'm not sure what size to make the holes as too large and most of the flow will come from the nearest edge of the brick. Presumably the holes will need to get larger the further you go along the tube. But what size to make the holes I'm not sure how to calculate.
I know the length of the sample probe area ~150mm and the flow of the sampling machine. ~0.2g/s Also I know the inside diameter of the probe ~6mm