公开(公告)号：US10473507B2

公开(公告)日：2019-11-12

申请号：US15581437

申请日：2017-04-28

Applicant: Fluid Handling LLC

Inventor： Pratik Shah ,  Ronan Stephens ,  James J. Gu

IPC: G01F23/22 ,  G01F23/00 ,  G05B9/02 ,  G08B5/36 ,  F24H9/20

Abstract: A switch assembly includes an automatic type 11 switch having 1 and 2 contacts and 3 and 4 contacts with the 2 and 3 contacts being shorted together, configured to respond to a water level of a boiler, short the 1 and 2 contacts when the water level is high, short the 3 and 4 contacts when the water level is low; and an electronic circuit board having a processor configured to sense signaling containing information about the 1, 2/3 and 4 contacts, and provide control signaling containing information about the water level of the boiler. The electronic circuit board also includes a relay configured to respond to the control signaling, and turn the relay on/off.