DEVICE FOR TAKING SAMPLES OF AIR Russian patent published in 1995 - IPC

FIELD: sanitary; measurement technology; environment control. SUBSTANCE: device has a throttle valve mounted on a line connected with the sampling vessel outlet and a sampling vessel resistance correction unit. The unit has a liquid-flow throttling valve, a liquid-flow throttling orifice and a follower. Follower operation setup chamber is connected with the sampler vessel outlet. Liquid-flow throttling valve outlet is connected with the comparison member operation setup chamber and liquid- flow throttling orifice inlet. The liquid-flow throttling orifice outlet is connected with the follower. The follower operation setup chamber is shiftily connected with the sampler vessel outlet. The device may have a set of throttled valves, mountable on parallel branches connectable with the main line connected with sampler vessel outlet. Outlet of each throttle valve is connected with the line entering the follower-amplifier input. EFFECT: enhanced effectiveness in detecting harmful gas presence in air samples. 2 cl, 1 dwg