Bently Nevada 330780-91-00 3300 XL 11 mm Proximity Sensor Precision Machinery Protection

The Bently Nevada 330780-91-00 is a critical component of the renowned 3300 XL 11 mm Proximitor Sensor System, manufactured in the USA . This high-performance proximitor sensor is designed to work seamlessly with non-contacting 3300 XL 11 mm proximity probes and extension cables, providing accurate, real-time measurements of shaft vibration and displacement in rotating machinery .

Key Technical Specifications

Manufacturer: Bently Nevada (a Baker Hughes business)

Part Number: 330780-91-00

Series: 3300 XL 11 mm Proximity Transducer System

System Length: 9.0 meters (29.5 feet) 

Mounting Type: DIN rail mount (91 option) 

Approval Option: 00 (no special approvals required) 

Electrical Characteristics

The 330780-91-00 operates with specific power requirements to ensure optimal performance:

Power Supply (without barriers): -17.5 Vdc to -26 Vdc

Maximum Current Consumption: 12 mA

Power Supply (with barriers): -23 Vdc to -26 Vdc

Operating Temperature: -35°C to +85°C (-31°F to +185°F)

Storage Temperature: -51°C to +100°C (-60°F to +212°F) 

Performance Features

This proximitor sensor delivers exceptional measurement accuracy with a linear range of 0.5 to 4.5 mm (20 to 180 mils) from the target surface. The system provides a sensitivity of 3.94 V/mm (100 mV/mil) with a frequency response of 0 to 8 kHz, making it ideal for both vibration and displacement monitoring applications .

Applications

The 330780-91-00 is widely used in critical industrial environments including:

Power generation plants (steam and gas turbines)

Oil refineries and petrochemical facilities

Steel mills and metal processing plants

Centrifugal compressors and pumps 

Typical measurements include radial vibration, axial shaft position, thrust position, and keyphasor applications .

System Integration

This proximitor sensor is part of a complete transducer system that includes:

3300 XL 11 mm proximity probe

3300 XL extension cable

330780-91-00 Proximitor sensor

The system connects to Bently Nevada monitoring equipment such as the 3500/42M, 3500/45, and 3500/50 modules for comprehensive machinery protection .

Durability and Quality

Housed in robust materials with hermetically sealed construction, the 330780-91-00 withstands harsh industrial environments. The unit weighs approximately 0.255 kg and features corrosion-resistant materials suitable for continuous operation in demanding conditions .

For reliable, precision machinery monitoring, the Bently Nevada 330780-91-00 remains the industry standard for non-contact shaft measurement applications.