We need to ensure that all operators are using the correct datum to measure the filter headloss. Some plants have scales screwed onto the inside of the entrance boxes. The easiest way for them to measure if they don't have that is just to measure the distance to the floor with a straight ruler.
We need to ensure that all operators are using the correct datum to measure the filter headloss. Some plants have scales screwed onto the inside of the entrance boxes. The easiest way for them to measure if they don't have that is just to measure the distance to the floor with a straight ruler.