SAMPLING POINT FOR A PARTICLE DETECTOR

摘要

A sampling point for use with an aspirating particle detection system. The sampling point includes: a body; a plurality of apertures in the body for drawing an air sample from an ambient environment; an outlet for delivering the sampled air, at a predetermined sample flow rate, from the body into a sampling pipe of the network of sampling pipes; and a means for maintaining the predetermined sample flow rate regardless of the presence or absence of ambient flow of air about the body. A particle detection system, and air sampling system are also described.

主权项

1. An air sampling system for a particle detector, the sampling system having:
a plurality of sampling points for drawing air into the sampling system; the sampling system being configured to have a flow of air at a predetermined flow rate at a location downstream from at least some of the sampling points; wherein at least one of the sampling points upstream from the location has an arrangement for maintaining flow rate via the sampling point into the sampling system such that the flow rate at the location is maintained at the predetermined flow rate regardless of the presence or absence of ambient flow of air about the sampling point.