Gas sampler for gases containing environmental smells has inlet tube with throttle regulation to gas sample bag

摘要

A gas sampler (30) has a sample abstraction unit with a gas bag (5) linked by a tube (23) to a sample acceptance probe (20, 22). The passage of gas (25) through the tube is regulated by a throttle (3). The link tube (23) and sample sensor (20, 22) are made in a single piece or are assembled into a single unit. The gas sampler maintains an essentially constant pressure differential over the extended operating period.