Patent ID: 8424397

Claim:
A particle counter apparatus for counting particles in a fluid flowing in a pipe or a pipeline, which particle counter apparatus comprises a pipe portion through which the fluid flows, which pipe portion is provided with a fluid sample outlet for withdrawal of a fluid sample, which particle counter apparatus also comprises a first fluid transfer body extending from the fluid sample outlet to a particle counter, and a second fluid transfer body extending from the particle counter to a fluid return outlet mounted in the pipe portion downstream of the fluid sample outlet, wherein the particle counter apparatus further comprises a propeller unit with a propeller, which is mounted in the pipe portion, either directly opposite the fluid sample outlet or upstream of the fluid sample outlet, with the result that solid particles are distributed in the fluid before a fluid sample is withdrawn, which propeller further comprises a generator driven by the propeller and means for transmitting electrical energy to the particle counter, thereby enabling the propeller unit to supply the particle counter with sufficient electric power to operate the particle counter.