Abstract: The present disclosure provides a relative humidity sensor including a sensor electronics assembly that is encased in a body assembly that protects the sensor electronics assembly. A humidity sensor element, though, remains exposed to the ambient environment through an aperture in the body assembly. One or more filter(s) comprising a porous membrane can cover the aperture at different locations within the humidity sensor. The filter can be attached during the construction of the body assembly thereby simplifying the manufacture of the humidity sensor.

Abstract: A fluid flow rate sensor includes a detection circuit which generates a first signal corresponding to an output voltage of a bridge circuit, and a second signal corresponding to a fluid temperature. A control module can more accurately and quickly determine the fluid flow rate based on the first signal, the second signal and a look-up table. The look-up table includes a plurality of curves plotted according to data, indicating relationship among the fluid temperature, the output voltage and the fluid flow rate. The fluid flow rate sensor is inherently temperature compensated and has a shorter response time.

Abstract: A fluid flow rate sensor includes a detection circuit which generates a first signal corresponding to an output voltage of a bridge circuit, and a second signal corresponding to a fluid temperature. A control module can more accurately and quickly determine the fluid flow rate based on the first signal, the second signal and a look-up table. The look-up table includes a plurality of curves plotted according to data, indicating relationship among the fluid temperature, the output voltage and the fluid flow rate. The fluid flow rate sensor is inherently temperature compensated and has a shorter response time.