In-situ apparatus for detecting abnormality in process tube

A fluid inspecting system for inspecting flowing fluid, comprising:

• a process tube device, including:
• a nozzle configured to receive fluid;
• a main tube coupled to the nozzle, the main tube providing a channel for the fluid;
• a first tube extending from the main tube, the first tube having a first side and a second side opposite of the first side;
• a light emitting source positioned on and adjacent to the first side of the first tube, the light emitting source configured to emit light to the channel along a first optical path;
• a first sensor positioned on and adjacent to the second side of the first tube, the first sensor further positioned opposite the light emitting source and configured to receive the light emitted by the light emitting source along the first optical path, wherein the first optical path is configured to be linear between the first sensor and the light emitting source;
• a second sensor positioned on and adjacent to the second side of the first tube and adjacent to the first sensor;
• a third sensor and fourth sensor positioned on the first side of the first tube, the light emitting source positioned between the third sensor and the fourth sensor;
• and
• a controller operatively coupled to the first, second, third, and fourth sensors and configured to receive data from the first, second, third, and fourth sensors, wherein the first, second, third, and fourth sensors receive signals based on the light from the light emitting source,
• wherein the controller is further configured to:
• determine at least one external material is present in fluid within the first tube in response to light emitted from the light emitting source being refracted from the at least one external material, propagated along a second optical path and received at the second sensor, wherein the second optical path is different from the first optical path;
• and
• determine no external material is present in the fluid passing between the light emitting source and the first sensor in response to the first sensor receiving the light along the first optical path.

A fluid inspecting system for inspecting flowing fluid, comprising:

• a process tube device, including:
• a main tube coupled to a nozzle configured to receive fluid, the main tube providing a channel for the fluid;
• a first tube extending from the main tube, the first tube having a first side and a second side opposite of the first side;
• a light emitting source positioned on and adjacent to the first side of the first tube, the light emitting source configured to emit light to the channel along a first optical path;
• a first sensor array positioned on and adjacent to the second side of the first tube, the first sensor array further positioned opposite the light emitting source and configured to receive the light emitted by the light emitting source along the first optical path, wherein the first optical path is configured to be linear between the first sensor array and the light emitting source;
• a second sensor array positioned on and adjacent to the second side of the first tube and adjacent to the first sensor array;
• a third sensor array positioned on the first side of the first tube, the light emitting source adjacent to the third sensor array;
• a fourth sensor array positioned on the first side of the first tube, the light emitting source adjacent to the fourth sensor array, the fourth sensor array positioned opposite of the third sensor array relative to the light emitting source;
• and
• a controller operatively and communicatively coupled to the process tube device including the first, second, third, and fourth sensor arrays, the controller configured to receive data from the first, second, third, and fourth sensor arrays, wherein the first, second, third, and fourth sensor arrays receive signals based on the light from the light emitting source,
• wherein the controller is further configured to:
• determine at least one external material is present in fluid within the first tube in response to light emitted from the light emitting source being refracted from the at least one external material, propagated along a second optical path and received at the second sensor array;
• and
• determine no external material is present in the fluid passing between the light emitting source and the first sensor array in response to the first sensor array receiving the light along the first optical path.