Ecological Systems and Devices Annotation << Back Определение расхода производственных сточных вод по скорости и глубине потока Щербаков Б.Я. The simplest mechanical appliances to sampling apparatus SchEM-3 for practical realization of a method for determination of the sewage water discharge in wells on speed of a water-wheel rotation and stream depth are offered. The requirements to characteristics of an automatic depth meter for certification of sampling apparatus SchEM-3 as a flowmeter are formulated. The article is interest both for ecologists, and for developers of devices.