Patent ID: 6931952

Claim:
A device for in-line measurement of properties or phenomena in a fluid flow within a pipeline system, which comprises: (a) a housing which is small enough for unrestricted travel in a medium flowing in the pipeline system; (b) at least one sensor mounted in the housing and communicating with the medium flowing in the pipeline, said sensor being adapted to scan desired properties and/or characteristics of the medium at a predetermined rate; (c) a microprocessor contained in the housing for logging data generated by the sensor and storing it in a memory, said microprocessor being provided with a communications port for connecting it to a computer; (d) said housing also having a space for a power source which, when inserted into said space and switched-on, powers the microprocessor; (e) a removable cap for effecting a watertight closure of the housing when the device travels in the pipeline system and allowing access to the microprocessor when the device is out of the pipeline system; and (f) a buoyancy compensator provided within the housing an/or the cap for adjusting specific gravity of the device to a desired value.