| 摘要 |
A fluid flow monitor for use in a steam flow line and comprising a chamber (1) in which condensate can collect and a single baffle (5,50) between an inlet (2) and an outlet (3) of this chamber. The baffle is disposed such that a steam flow induced pressure drop at the chamber outlet results in rise in condensate level on the outlet side of the baffle and corresponding fall on the inlet side. The monitor further comprises means for detecting change in condensate level constituted by a single electrode (8) extending into the interior of the chamber, this electrode being electrically insulated from an electrically conductive area (9) exposed to the collected condensate and positioned such that in use change in condensate level to a predetermined extent breaks an electrically conductive path from the electrode via the condensate to the conductive area. The need for sight glasses which are easily dirtied and require skill in use is avoided and the monitor described is of simple construction. |
