Technical Specifications / Parameters Parameter Specification Model Fisher Type OSE (e.g., OSE-1, OSE-2, OSE-3, OSE-4) Type Mechanical, Centrifugal Overspeed Trip Speed Ranges Available in various ranges, typically from ~1000 RPM to over ~10,000 RPM, depending on the specific model and spring. Trip Point Accuracy Typically within ±1% of the set speed. Speed Sensing Direct shaft connection or gear-driven. Output Mechanical lever actuation to trigger a pneumatic trip valve (e.g., Fisher 290 series). Mounting Directly onto the equipment shaft or via a drive coupling. Hazardous Area Approvals The mechanical trip itself is intrinsically safe. The associated pneumatic trip valve is designed for industrial use. Materials Housing: Cast Iron or Carbon Steel; Internal Components: Steel, Stainless Steel, and other hardened alloys. Trip Reset Manual reset required after a trip event.
