US 12,117,210 B2
Monitoring system for heated fluids
Lee Kernich, Rydalme (AU); and Brendan Bourke, Rydalme (AU)
Assigned to Rheem Australia PTY Limited, Rydalmere (AU)
Appl. No. 17/626,235
Filed by Rheem Australia PTY Limited, Rydalmere (AU)
PCT Filed Jul. 10, 2020, PCT No. PCT/AU2020/050718
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/007611, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 2019902469 (AU), filed on Jul. 12, 2019; and application No. 2020900322 (AU), filed on Feb. 6, 2020.
Prior Publication US 2022/0260282 A1, Aug. 18, 2022
Int. Cl. F24H 15/45 (2022.01); F24H 9/20 (2022.01); F24H 9/45 (2022.01); F24H 15/104 (2022.01); F24H 15/144 (2022.01); F24H 15/20 (2022.01); F24H 15/223 (2022.01); F24H 15/225 (2022.01); G01K 1/14 (2021.01); G01K 7/16 (2006.01); G01N 17/04 (2006.01); G05D 23/19 (2006.01); G05D 23/24 (2006.01); F24H 15/395 (2022.01)
CPC F24H 9/2021 (2013.01) [F24H 9/455 (2022.01); F24H 15/104 (2022.01); F24H 15/144 (2022.01); F24H 15/20 (2022.01); F24H 15/223 (2022.01); F24H 15/225 (2022.01); F24H 15/45 (2022.01); G01K 1/14 (2013.01); G01K 7/16 (2013.01); G01N 17/04 (2013.01); G05D 23/1927 (2013.01); G05D 23/24 (2013.01); F24D 2220/04 (2013.01); F24H 15/395 (2022.01)] 17 Claims
OG exemplary drawing
 
1. A monitoring system for monitoring selected parameters of a fluid heater, the heater comprising a storage vessel for storing heated fluid therein, the monitoring system comprising:
a temperature sensor and associated first electrical metering circuitry for sensing the temperature of the fluid within the storage vessel;
an impressed current anode and associated second electrical metering circuitry, wherein the first electrical metering circuitry and the second electrical metering circuitry are connected to a power source configured to provide electric power to the monitoring system;
a control switch configured to be in a first position in which the first electrical metering circuitry is connected to the power source and the second electrical metering circuitry is disconnected from the power source, and a second position in which the second electrical metering circuitry is connected to the power source and the first electrical metering circuitry is disconnected from the power source; and
a controller configured to periodically switch the control switch among one of the first position and the second position.