Bently Nevada 330780-91-00 3300 XL 11 mm Proximitor Sensor

Description

330780-91-00: 3300 XL 11 mm Proximitor Sensor configured for a 9.0 meter total system length with a 35 mm DIN rail mount and no hazardous area approvals. This specific configuration operates within the 3300 XL 11 mm proximity transducer system, receiving input from a compatible 11 mm probe and extension cable to output a linear voltage proportional to the distance between the probe tip and target surface.

This DIN rail-mounted sensor provides a 3.94 V/mm (100 mV/mil) scale factor. It is used on critical rotating machinery such as steam turbines, compressors, and pumps to measure axial thrust position, radial vibration, and phase reference signals. The 9.0-meter system length option requires matching 9.0-meter total probe and extension cable lengths to maintain system calibration and performance.

Features

• Option 91 specifies a 9.0 meter (29.5 feet) total system length, allowing long-distance connections between probe and sensor.
• Integrated DIN rail mount adapter allows direct installation onto standard 35 mm DIN rails.
• Option 00 designates that no hazardous area agency approvals are required for this unit.
• Compatible with Bently Nevada 3300 XL 11 mm proximity probes and 330730 extension cables.
• A380 aluminum housing provides physical shielding and structural integrity in industrial environments.
• Coaxial ClickLoc connector provides a secure connection to the extension cable with gold-plated brass contacts.
• Terminal strip connections provide secure wiring points for VT, COM, and OUT connections.

Applications

Typical machinery vibration and position monitoring applications include:

• Axial (thrust) position measurements on steam and gas turbines.
• Ramp differential expansion measurements on industrial steam turbines.
• Rotor and shaft vibration monitoring on fluid-film bearing machines.
• Tachometer, phase reference (Keyphasor), and zero-speed signal sensing on rotating shafts.
• Rod position or rod drop measurements on reciprocating compressors.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

Ensure correct mounting and electrical practices during installation:

• Mount the Proximitor Sensor onto a standard 35 mm DIN rail. Ensure there is adequate clearance to slide the unit onto or off the rail.
• Keep total system length calibrated. The 330780-91-00 is a 9.0-meter system length sensor and must be matched with a probe and extension cable combination that totals 9.0 meters (e.g., 1.0 m probe + 8.0 m extension cable, or 5.0 m probe + 4.0 m extension cable).
• Ensure all field wiring terminals are tightened to specifications. Use 0.2 to 1.5 mm2 (16 to 24 AWG) shielded triad cable.
• Do not exceed the maximum field wiring distance of 305 meters (1000 feet) between the Proximitor Sensor and the monitoring monitor.
• When connecting the probe lead to the extension cable, finger-tighten the ClickLoc coaxial connectors first, then torque to the recommended limit of 0.565 N-m (5 in-lb) maximum. Do not use tools that can damage the gold plating.

Compliance and Certifications