Description

330780-91-05 | Bently Nevada | 3300 XL 11 mm Proximitor Sensor

### Product Description
The 330780-91-05 is a non-contact eddy-current proximity sensor within the Bently Nevada 3300 XL system. It delivers high-stability displacement measurements for rotating machinery shafts and casings.
Moreover, it is engineered for continuous monitoring of vibration, position, and speed in critical turbomachinery applications. Therefore, it supports reliable protection and condition monitoring in harsh industrial environments. In addition, its 11 mm diameter sensing range enables precise gap measurement with minimal thermal drift.

### Technical Specifications

### Typical Applications
– Steam and gas turbine shaft vibration and axial position monitoring
– Compressor and centrifugal pump shaft displacement and differential expansion measurement
– Generator rotor eccentricity and thrust bearing wear detection
– Critical fan and blower shaft runout and clearance verification

### FAQ
What is the standard output signal?
A 4–20 mA current loop proportional to measured gap, referenced to the proximitor’s DC voltage supply.

Is this sensor compatible with legacy 3300 series monitors?
Yes, it is fully compatible with all 3300 series monitoring systems, including 3300/16, 3300/20, and 3300/25.

Does it require a separate extension cable?
Yes, it must be used with a Bently Nevada-approved low-noise coaxial extension cable (e.g., 330130-060-00-00) to maintain signal integrity.

What is the operating temperature range?
−40 °C to +121 °C (−40 °F to +250 °F) at the probe tip; electronics housing rated to +85 °C.

Can it measure through non-ferrous materials?
No — it requires direct line-of-sight to a conductive ferromagnetic target surface (e.g., 4140 steel or equivalent).

### SEO Title
Bently Nevada 330780-91-05 Proximitor Sensor

### Meta Description
Bently Nevada 330780-91-05 Proximitor Sensor delivers stable 11 mm eddy-current displacement measurement for turbomachinery protection. Request datasheet or technical support today.