The NORIS RG51 is a robust and reliable tacho-generator designed for accurate speed measurement in demanding industrial and marine environments. Encased in a seawater-resistant, light metal die-cast housing, it is built to withstand harsh conditions. The RG51 converts rotational speed into a proportional DC voltage signal, making it an ideal component for monitoring and controlling engines, turbines, and other rotating machinery. Its high protection class and wide operating temperature range ensure dependable performance and longevity in critical applications.