Removable portable wireless fluid sensor system

A removable portable wireless fluid sensor system for use in hydrocarbon wells having a sensor assembly with a guided wave radar level and interface transmitter, a single flex probe with a sensor wire, a top tank mounting system for supporting the single flex probe, at least one turbulence breaker, and a secondary wireless controller in communication with a primary wireless controller. The secondary wireless controller communicates with the single flex probe, the guided wave radar level and interface transmitter, and the primary wireless controller. The removable portable wireless fluid sensor system is configured for detecting fluid levels in tanks accurately as levels change due to coiled tubing operations in completions of hydrocarbon wells, snubbing operations in completions of hydrocarbons wells, water transfer operations during fracturing of a hydrocarbon well, and flow back fluid measurement and well testing procedures for hydrocarbon wells.