30000-00-13-12-02 is a factory pre-calibrated flush-type eddy-current proximity probe from Bently Nevada 30000 series, engineered and manufactured in accordance with API670 international standard for turbomachinery supervisory instrumentation and rotating machinery safety protection systems. When matched with factory-certified extension cable and compatible proximitor transducer, the probe forms a complete closed-loop non-contact displacement measurement circuit based on eddy-current induction principle. It converts real-time clearance variations between flush sensing end face and metallic rotor surface into proportional linear DC voltage signals to continuously monitor radial shaft vibration, axial thrust displacement and Keyphasor rotational speed parameters. This transducer is widely applied on critical high-speed rotating equipment including steam turbines, centrifugal compressors, turbo-generator sets, boiler feedwater pumps and industrial blowers across thermal power generation, petrochemical refining and heavy metallurgy industries. Every finished probe undergoes full-loop capacitance matching test, wiring continuity inspection, alternating high-low temperature cyclic aging and connector sealing durability test before factory shipment, ensuring stable measuring precision under harsh industrial environments with drastic ambient temperature fluctuation, dense lubricant oil mist and complex electromagnetic interference. All collected analog signals are transmitted to Bently 3500 monitoring rack, on-site DCS or PLC control system to trigger pre-alarm and emergency trip interlock, avoiding catastrophic mechanical damage caused by excessive rotor deflection and over-limit vibration amplitude.