US 11,953,355 B2
Utility meter including a temperature sensor detection algorithm
Kasper Hemme, Skanderborg (DK); Mads Erik Lund Jensen, Skanderborg (DK); and Allan Jensen, Skanderborg (DK)
Assigned to Kamstrup A/S, Skanderborg (DK)
Appl. No. 17/434,806
Filed by Kamstrup A/S, Skanderborg (DK)
PCT Filed Feb. 27, 2020, PCT No. PCT/DK2020/050054
§ 371(c)(1), (2) Date Aug. 30, 2021,
PCT Pub. No. WO2020/177826, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. PA 2019 70145 (DK), filed on Mar. 1, 2019.
Prior Publication US 2022/0163359 A1, May 26, 2022
Int. Cl. G01F 1/66 (2022.01); G01K 7/18 (2006.01); G01K 13/02 (2021.01)
CPC G01F 1/66 (2013.01) [G01K 7/18 (2013.01); G01K 13/026 (2021.01)] 7 Claims
OG exemplary drawing
 
1. A utility meter for measuring thermal energy delivered to a point of consumption by a fluid supplied via a supply flow and a return flow, including:
a flow meter unit for measuring a supply flow rate or return flow rate of the fluid;
a pair of temperature sensing probes for measuring temperatures of the supply flow and the return flow, each of the temperature sensing probes including a resistive temperature device; and
a calculator configured for executing a measuring algorithm for determining an amount of thermal energy delivered to the point of consumption over a period of time based on flow rates and temperatures received from the flow meter unit and temperature sensing probes, respectively;
wherein the calculator is configured to detect a type of resistive temperature device included in the temperature sensing probes and to adapt the measuring algorithm according to the type of resistive temperature device and that the type of resistive temperature device included in the temperature sensing probes is detected using a sensor detection algorithm, the sensor detection algorithm including the steps of:
attempting to measure temperature using a measuring algorithm adapted to a first type of temperature sensing probes, such as temperature sensing probes including resistive temperature devices of the Pt-100 type,
attempting to measure temperature using a measuring algorithm adapted to a second type of temperature sensing probes, such as temperature sensing probes including resistive temperature devices of the Pt-500 type, and
determining which of the temperature measurements are valid.