Honeywell International Inc.
FLOW SENSING DEVICE

Abstract:

Methods and apparatuses associated with flow sensing devices are provided. An example flow sensing device includes a flow cap component and a sensor component. The flow cap component or sensor component may include a heating element. The flow cap component can at least partially define a flow channel configured for a media to flow therethrough. The heater element may be orthogonal or perpendicular to the flow channel. The sensor component may include at least one thermal sensing element disposed upstream of the heater element and at least one thermal sensing element disposed downstream of the heater element. The sensor component may include two or more thermal sensing elements disposed in either the upstream direction or downstream direction of the heater element. Thermal sensing elements may be spaced different distances from the heater element to increase the accuracy and precision of flow rate measurement at low flow rates.