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A detection apparatus for use in a vessel for measuring a fluid includes a tubular connected to a housing containing sensors, wherein the housing includes a top, a bottom, and a hole disposed in the top of the housing. The housing containing sensors includes an outer surface and a sloped inner surfa

A detection apparatus for use in a vessel for measuring a fluid includes a tubular connected to a housing containing sensors, wherein the housing includes a top, a bottom, and a hole disposed in the top of the housing. The housing containing sensors includes an outer surface and a sloped inner surface sloping from the outer surface toward a central axis of the housing and intersecting with the hole. In one embodiment, two or more housing containing sensors can be included with detection apparatus. A pressure sensor, having a diaphragm flush mounted in the sloped inner surface, can be disposed in the hole. Signaling device can be disposed in the hole for communications between the sensors and a processor. The processor receives data from the sensors and converts the data to values for transmission to an auxiliary device.

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What is claimed is: 1. A detection apparatus for use in a vessel for measuring a fluid, comprising: a housing having a central axis, a housing top with a surface parallel to and beneath the housing top, a housing bottom, an outer surface, and a recess formed in the outer surface; wherein the housin

What is claimed is: 1. A detection apparatus for use in a vessel for measuring a fluid, comprising: a housing having a central axis, a housing top with a surface parallel to and beneath the housing top, a housing bottom, an outer surface, and a recess formed in the outer surface; wherein the housing bottom and the housing top are each adapted to couple to a tubular member; and wherein said recess has a upper surface an a bottom surface and where the upper surface is sloped relative to a plane that is perpendicular to the central axis; at least one sensor-retaining hole disposed through the top surface at an angle relative to the central axis housing and terminating with the upper surface of the recess; at least one pressure sensor mounted in at least one sensor-retaining hole, wherein the pressure sensor comprises a diaphragm that is flush with the upper surface of the recess; and signaling means within the housing for communicating sensor data to a processor disposed at a distance from the housing top; wherein the processor comprises memory for receiving sensor data from the signaling means and converting the sensor data to at least one value using computer instructions stored in the memory, and wherein the processor transmits the at least one value to at least one auxiliary device. 2. The detection apparatus of claim 1, where the housing is coupled to a tubular member, and the tubular member is additionally coupled to a sleeve in order to accommodate larger sized objects for monitoring. 3. The detection apparatus of claim 1, wherein the bottom surface of the recess is sloped relative to a plane that is perpendicular to the central axis for allowing fluid to escape the housing. 4. The detection apparatus of claim 1, further comprising an additional sensor-retaining hole disposed through the top surface at an angle relative to the central axis housing and terminating with the upper surface of the recess; and at least one temperature sensor in the additional sensor-retaining hole; and wherein the signaling means in the housing for communicates temperature sensor data with the processor. 5. The detection apparatus of claim 1, further comprising at least one channel substantially parallel to the central axis of the housing, wherein the at least one channel contains signaling wires to convey sensor data from the signaling means to the processor. 6. The detection apparatus of claim 1, wherein the angle of each sensor-retaining hole ranges from about 0.001 degrees to about 30.0 degrees as measured from the central axis. 7. The detection apparatus of claim 1, further comprising a mounting hole that is parallel to the central axis of the housing, wherein the mounting hole is adapted to receive a strain relief fastener. 8. The detection apparatus of claim 1, further comprising a support to mount the detection apparatus to an upper-portion of the vessel. 9. The detection apparatus of claim 1, further comprising a magnetic base attached to the housing bottom. 10. The detection apparatus of claim 1, further comprising a locking integrity bag disposed over the processor. 11. The detection apparatus of claim 1, wherein the at least one pressure sensor further comprises a temperature sensor. 12. The detection apparatus of claim 1, wherein the processor comprises a clock, and wherein the clock synchronizes data acquisition from the at least one pressure sensor to the processor. 13. The detection apparatus of claim 1, wherein the at least one auxiliary device is a remote terminal unit, a distributive control system, a supervised control and data acquisition system, a computer, a transceiver, a tank gauge interface unit, or combinations thereof. 14. The detection apparatus of claim 1, further comprising from 2 to 150 housings, wherein each housing comprises at least one pressure sensor. 15. The detection apparatus of claim 1, wherein the vessel has a roof and the detection apparatus further comprises a first portion extending above the roof and a second portion below the roof; wherein said first portion comprises sensors for measuring ambient temperature and pressure and said second portion comprises sensors for measuring vapor pressure and vapor temperature. 16. The detection apparatus of claim 1, wherein the slope of the upper surface ranges from about 0.001 degrees to about 30.0 degrees as measured from a plane perpendicular to the central axis.