Gas sampling equipment for water quality monitoring in sewage

En este caso se habla de un equipo que lleva a cabo el muestreo en el gas que está en contacto con la superficie de un agua residual. El resumen del artículo creado por Tamamoto, Hiroyuki; Abe, Takeshi; Takeda, Misao; Nakamura, Atsushi; Yamaguchi, Nobukazu es el siguiente:

The equipment for sampling gas above water surface, includes a float having a hung spindle on the water surface with balance of the spindle gravity and water bouncy, a means for sampling gas above the surface, a hanging wire for the sampling means, a sampling tube for withdrawing the gas from the sampling means, and a means for winding the wire and tube. 

Jpn. Kokai Tokkyo Koho (2011),

 JP 2011033524 A 20110217