Measuring the level of dust and fly ash collected in electrostatic precipitators (ESPs) is a very difficult technical problem. At one utility, level switches were so unreliable that operators could ...

TESTS with a number of instruments in different factories have demonstrated that the long-running thermal precipitator of the type described by Hamilton 1 is a convenient instrument for measuring ...

THE thermal precipitator 1 is widely used as a standard instrument for sampling dust clouds. The dust from a measured volume of air is deposited on glass slides and is afterwards counted under a ...