NOVELTY - The sensor array comprises a conduit/housing (400) having a lumen (208) extending between an inlet and an outlet (404) of the conduit, sensors (200) coupled to the conduit, straightening flow directors (300) disposed on an inner wall of the lumen, spiraling flow directors disposed on an inner wall of the lumen, and injectors. Each of the sensors comprises a probe member disposed within the lumen, and is configured to measure a parameter of an aqueous medium containing a biomass. The sensors include a pH sensor, an oxidation-reduction potential sensor and a conductivity sensor.    USE - The sensor array is useful in an biomass processing system for measuring parameters of an aqueous medium containing a biomass, where the parameters include pH, oxidation reduction potential, total dissolved solid, conductivity, temperature, salinity, chlorine concentration, ammonia concentration, dissolved oxygen concentration, zeta potential, biomass cell density (all claimed), water hardness and carbon dioxide concentration.    ADVANTAGE - The sensor is capable of effectively and rapidly measuring the parameters of the aqueous medium with high reliability thus improving biomass growths and refinement and production of biomass feedstocks and products derived from the biomass.    DETAILED DESCRIPTION - The sensor array comprises a conduit/housing (400) having a lumen (208) extending between an inlet and an outlet (404) of the conduit, sensors (200) coupled to the conduit, straightening flow directors (300) disposed on an inner wall of the lumen, spiraling flow directors disposed on an inner wall of the lumen, and injectors. Each of the sensors comprises a probe member disposed within the lumen, and is configured to measure a parameter of an aqueous medium containing a biomass. The sensors: include a pH sensor, an oxidation-reduction potential sensor, a conductivity sensor, a temperature sensor, a chlorine analyzer, a fermentor control, a zeta potential sensor, and a stream current sensor; and are located about the conduit at varying or same radial positions. The injectors are coupled to the conduit and configured to direct a blast of fluid towards the probe member of the sensor. The probe member includes a ceramic surface, a polished metal surface, and/or a coating configured to determine bio-residue formation. An INDEPENDENT CLAIM is included for a biomass processing system.    DESCRIPTION OF DRAWING(S) - The figures show schematic perspective and top views of a sensor array.    Sensors (200)    Lumen (208)    Straightening flow director (300)    Housing (400)    Outlet. (404)