公开(公告)号：US20250085147A1

公开(公告)日：2025-03-13

申请号：US18830421

申请日：2024-09-10

Applicant: Ecolab USA Inc.

Inventor： Eugene Tokhtuev ,  Anatoly Skirda ,  Michael Patrick Kremer ,  Rachel McGinness ,  Lawrence Salvati

IPC: G01F1/69 ,  G01F1/684 ,  G01F1/696 ,  G08B21/18

Abstract: Out of product sensors can include a housing having a first surface and defining a flow channel. A circuit board can be coupled to the first surface of the housing and support a thermistor bridge. The thermistor bridge can be arranged so that some thermistors are in a first sensing area and other thermistors are in a second sensing area. The housing can be configured such that thermal resistance between the flow channel and the first sensing area is lower than thermal resistance between the flow channel and the second sensing area, and/or fluid flowing in the flow channel is directed more toward the first sensing area than the second sensing area. Liquid in the flow channel can affect thermal behavior of thermistors in the first and second sensing area differently and can be used to determine whether liquid is flowing through the sensor.