Abstract: A particle detecting device includes a frame, a chamber that is disposed within the frame, a sample injection flow path for injecting, into the chamber, a fluid that includes particles, from a first inlet opening that is provided in the frame, an adjusting mechanism that adjusts a state of the fluid within the chamber by supplying a fluid, from which the particles have been removed, into the chamber through an adjusting flow path that connects to the chamber from a second inlet opening that is separate from the first inlet opening that is provided in the frame, and a detecting mechanism that detects particles included within the fluid, by shining a light into the fluid within the chamber.

Abstract: A particle detection system is provided, including a sensing chamber having an inlet nozzle, an outlet nozzle, and an interrogation zone defined therebetween. Particles in a sampled environmental gas are prevented from escaping the interrogation zone by pressurizing the sensing chamber such that the pressure therein is higher than that in the outlet nozzle. This is accomplished by providing a source of extra gas to the sensing chamber, for example, by diverting gas from an inlet flow path directly to the sensing chamber.

Abstract: A particle detecting device includes a frame, a chamber that is disposed within the frame, a sample injection flow path for injecting, into the chamber, a fluid that includes particles, from a first inlet opening that is provided in the frame, an adjusting mechanism that adjusts a state of the fluid within the chamber by supplying a fluid, from which the particles have been removed, into the chamber through an adjusting flow path that connects to the chamber from a second inlet opening that is separate from the first inlet opening that is provided in the frame, and a detecting mechanism that detects particles included within the fluid, by shining a light into the fluid within the chamber.

Abstract: A particle detection system is provided, including a sensing chamber having an inlet nozzle, an outlet nozzle, and an interrogation zone defined therebetween. Particles in a sampled environmental gas are prevented from escaping the interrogation zone by pressurizing the sensing chamber such that the pressure therein is higher than that in the outlet nozzle. This is accomplished by providing a source of extra gas to the sensing chamber, for example, by diverting gas from an inlet flow path directly to the sensing chamber.