SensorTran Inc., Austin, TX, offers PerfectVision, a dual-laser distributed temperature system that enables the extension of the effective life of optical fibers by addressing fiber darkening and damage problems. PerfectVision dynamically and automatically calibrates each of the thousands of measurement points along the fiber. The two lasers, operating at different wavelengths, allow PerfectVision to automatically adjust for dynamic and nonuniform changes in optical loss in the fiber. It identifies and corrects for the effects, allowing the continued use of the existing fiber and avoiding costly redeployments. Applications include downhole oil and gas, transmission and distribution power cable monitoring, pipeline flow assurance and leak monitoring, process vessel hot spot detection, storage tank leak detection, and environmental monitoring.