Technical
system and method for online measuring and monitoring of the particle content in an injection
water flow (6′) in an
underwater line (8). The
system comprises a data gathering means, a data
communication link (48) and a data receiving means comprising an
image analysis apparatus (2) provided with: a
water sample line (18) for
throughput of a partial flow (6″) of the injection
water flow (6′); a means of conveyance (24) connected to the
water sample line (18) for transport of the partial flow (6″); a light-transparent flow portion (18′) disposed along the
water sample line (18); a camera (26) at the flow portion (18′); at least one
light source (30, 32) for emission of light (34) via the flow portion (18′) and into the camera (26); an electronic control means (36) for (a) control of the
image recording of the camera (26); (b) reception of image material from the camera (26); and (c) transmission of the image material to the data receiving means; and at least one
energy supply. The
image analysis apparatus (2) is disposed in a water-tight housing (4) under water (6); wherein the water sample line (18) is connected to the
underwater line (8) at a connection site (62) between a shipment site (50:64) for the injection water (6′) and an
injection well (56); wherein the data receiving means is located at a distance from the
image analysis apparatus (2); and wherein the control means (36) of the image analysis apparatus (2) is connected to the remote data receiving means.