Bently Nevada 144181-51 Monitoring Device is a 25mm transducer system consisting of a probe, extension cable, and Proximitor sensor, designed for measuring differential expansion in midsize to large steam turbines. It features a 12.7mm linear range, advanced RFI immunity, and robust spring terminal connections for reliable monitoring.

Applications

Differential Expansion (DE) Monitoring: Primarily used to measure the differential expansion between the rotor and stator in midsize to large steam turbine generators.

Axial Position Measurement: Monitors axial movement of turbine rotors relative to the casing.

Large Clearance Monitoring: Suitable for applications requiring a wide linear measurement range up to 12.7 mm (500 mils).

Target Configurations: Can be configured to observe collars or ramps on the rotor for DE measurement.

Redundant Measurement Setup: Often installed in pairs (e.g., two transducers on the same collar side) to provide measurement redundancy and increased reliability.

High-Noise Environments: Its improved RFI/EMI immunity makes it suitable for installations in electrically noisy industrial settings.

FAQ

Q1: What is the primary application of the Bently Nevada 144181-51 transducer system?

A1: It is primarily designed for measuring differential expansion (DE) between the rotor and stator in midsize to large steam turbine generators.

Q2: What components does the system include?

A2: The system consists of a 25 mm probe, an extension cable, and a 3300 XL 25 mm Proximitor sensor.

Q3: What is its key measurement specification?

A3: It offers a linear range of 12.7 mm (500 mils) with an output sensitivity of 0.787 V/mm (20 mV/mil).

Q4: What are common mounting configurations for DE measurement?

A4: Typical configurations include two transducers observing the same side of a collar or observing opposite sides of a collar to double the measurable range.

Q5: What are the key features of its Proximitor sensor?

A5: Key features include a thin design for flexible mounting (DIN-rail or panel), improved RFI/EMI immunity for CE compliance, and robust SpringLoc terminal strips for easy wiring.