Description

30780-91-CN | Bently Nevada | Proximitor Sensor

### Product Description
The 30780-91-CN is a high-precision eddy-current proximity probe designed for continuous displacement and vibration monitoring of rotating machinery.
Moreover, it delivers stable DC output proportional to target gap, enabling real-time shaft position and dynamic motion analysis in harsh industrial environments.
Therefore, it is commonly integrated into asset protection systems for critical turbomachinery, where reliability and signal fidelity are essential for predictive maintenance.

### Technical Specifications

### Typical Applications
– Monitoring radial vibration and axial position of steam turbine shafts
– Measuring differential expansion between casing and rotor in gas turbines
– Detecting bearing wear and shaft misalignment in centrifugal compressors
– Providing input signals to machinery protection systems (MPS) per API 670

### FAQ
What is the operating temperature range?
The probe operates continuously from –40 °C to +125 °C ambient.

Is calibration required before installation?
Yes—each probe must be calibrated with its matching extension cable and proximitor module to ensure system accuracy.

Can it be used with non-ferrous targets?
No—it requires ferromagnetic target materials such as 4140 steel; sensitivity and linearity degrade significantly on non-ferrous surfaces.

What is the standard cable length?
The 30780-91-CN ships with a 5-meter integral coaxial cable rated for industrial environments.

Does it meet API 670 requirements?
Yes—it complies with API RP 670 (4th edition) for vibration and position monitoring in rotating equipment.

### SEO Title
Bently Nevada 30780-91-CN Proximitor Sensor

### Meta Description
Bently Nevada 30780-91-CN Proximitor Sensor delivers precise shaft displacement measurement for turbomachinery protection. Ensure compliance and reliability—view specifications and integration guidance today.