Pressure sensor having a helmholtz resonator
This disclosure provides example methods, devices, and systems for a sensor having a Helmholtz resonator. In one embodiment, a system may comprise a sensing element; a header coupled to the sensing element; a housing coupled to the header; an adaptor coupled to the housing; a screen disposed in an opening of the housing, wherein a first cavity is disposed between the screen and the sensing element and a second cavity is disposed between the adaptor and the sensing element, and the screen in combination with the first cavity and the second cavity form a Helmholtz resonator.
1. A system, comprising:
a sensing element;
a header coupled to the sensing element;
a housing coupled to the header;
an adaptor coupled to the housing; and
a first gap disposed between the sensing element and the adapter, the first gap adapted to form a first cavity around at least a portion of the sensing element such that the sensing element is at least partially isolated from a stress applied at the adapter.
2. The system of claim 1 , wherein the first cavity is configured to reduce Helmholtz-related resonance.
3. The system of claim 1 , wherein the adaptor comprises a front surface adapted to form a front seal between the sensing element and a mating surface.
4. The system of claim 1 , further comprising a second gap disposed between the header and the adapter, the second gap adapted to form a second cavity around at least a portion of the header.
5. The system of claim 4 , wherein the second cavity is adapted such that the header is at least partially isolated from a stress applied at the adaptor.
6. The system of claim 4 , wherein the second gap is less than about 0.040 inches.
7. The system of claim 4 , wherein the second gap is in the range of between about 0.005 inches to about 0.040 inches.
8. The system of claim 1 , further comprising a screen disposed in an opening of the housing, wherein a third cavity is disposed between the screen and the sensing element.
9. The system of claim 8 , wherein the screen in combination with the first cavity and the second cavity form a Helmholtz resonator.
10. The system of claim 1 , wherein the first gap is less than about 0.015 inches.
11. The system of claim 1 , wherein the first gap is in the range of between about 0.001 inches to about 0.015 inches.
12. The system of claim 1 , wherein the sensing element is a piezoresistive leadless sensor.
13. The system of claim 1 , wherein the sensing element is used to measure a pressure.
14. The system of claim 1 , wherein the adapter is disposed around and defines an opening and the sensing element is disposed in the opening.
15. The system of claim 14 , wherein a size and a shape of the opening is about equivalent to a corresponding size and a corresponding shape of the sensing element.
16. The system of claim 1 , wherein the first gap is configured to allow a fluid to be disposed between the adaptor and the sensing element.
17. The system of claim 16 , wherein the adapter is disposed around and defines an opening and the sensing element is disposed in the opening, and wherein a size and a shape of the opening is about equivalent to a corresponding size and a corresponding shape of the sensing element to reduce fluid impact on the sensing element.
18. The system of claim 15 , wherein the shape of the opening is square.
19. The system of claim 1 , wherein a response time of the sensing element is less than about fifty microseconds.
20. The system of claim 1 , wherein a stress applied at a front surface of the adapter is transferred to the housing.