Abstract: A system for automatic sampling and sample conveyance for analysis, comprising a sampler having a slurry sampling member having a drain in the form of a flexible hose, a compressed air line, the flexible hose being connected, via a controlled valve, to a chamber for accumulation and dispatch of samples having check valves and an outlet which is connected, via a conveying line, to a sample receiver. The system is provided with a metering receptacle connected to the flexible drain hose and mounted at the inlet of the chamber and connected, via a controlled valve, to a water supply line, the capacity of the metering receptacle being commensurable with the capacity of the chamber, and the controlled valves being connected in parallel with each other.

Abstract: A method of measuring properties of a fluid in a container, wherein acoustic oscillation pulses are periodically applied to said fluid through the container wall and normally thereto, is disclosed. The acoustic signals are received in the zone of application of the acoustic oscillation pulses as envelopes of the pulse acoustic reverberation produced between the outer surface of the container wall and the fluid, said envelopes being used to form an electrical signal carrying information on the properties of the fluid. A device for measuring properties of a fluid in a container comprises an acoustic transducer positioned directly on the outer surface of the container wall and a series-connected circuit, composed of an electric pulse time delay unit, a gating pulse generator and a gating acoustic signal amplifier, coupled to the acoustic transducer.