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

Description

Option 91 (9.0 meters system length, DIN-rail mount) and Option 05 (Multiple Approvals) specify this 3300 XL 11 mm Proximitor Sensor configuration — 330780-91-05. As a primary instrument in 3300 XL 11 mm proximity transducer systems, this sensor conditions the non-contact, eddy-current signal from the paired probe and extension cable, providing a continuous analog output voltage directly proportional to the physical gap between the probe tip and the target material. The 9.0-meter calibration matches the combined length of the probe and extension cable, maintaining measurement accuracy across the complete 4.0 mm (160 mils) linear range.

This specific variant features a DIN-rail mounting base to allow high-density installation within industrial enclosures, contrasting with panel-mounted siblings (such as Option 90). The integrated SpringLoc terminal strips facilitate secure field wiring without special tooling. With built-in electromagnetic compatibility designed to meet CE requirements, this device offers high immunity to radio frequency interference (RFI) without requiring specialized shielded housings. The Option 05 certification package certifies the unit for global hazardous area installations under CSA, ATEX, and IECEx approvals.

Features

• Option 91 provides 9.0 meters (29.5 feet) system length calibration, matching the combined probe and cable total length.
• Integrated DIN-rail mounting hardware enables compact, direct installation within industrial enclosures.
• Option 05 Multiple Approvals package offers certified operation for hazardous environments under CSA, ATEX, and IECEx standards.
• SpringLoc terminal strips require no special tools for field wiring, offering secure and vibration-resistant wire retention.
• High RF interference immunity minimizes output noise from nearby radio frequency sources.
• Native analog output delivers 3.94 V/mm (100 mV/mil) incremental scale factor (ISF) over a 4.0 mm (160 mils) linear range.
• Robust A380 aluminum housing provides physical protection and structural durability in heavy industrial environments.

Applications

• Radial vibration and position monitoring on large industrial steam/gas turbines and compressors.
• Axial thrust position measurement for critical rotating machinery shafts.
• Keyphasor and phase reference applications on 11 mm probe transducer chains.
• Machinery protection systems in hazardous area petrochemical and power generation facilities.

Ordering Information

Technical Specifications

Connections and Interfaces

The sensor features a 3-pin SpringLoc terminal strip for reliable field connections without the need for special tools:

Installation Guidelines

• Mounting: Secure the Proximitor sensor onto standard 35 mm DIN rail using the integrated DIN mount option (Option 91). Ensure an additional 3.05 mm (0.120 in) clearance is provided above and below the mounting area for easy DIN rail removal.
• System Length Matching: This Proximitor is calibrated specifically for a 9.0-meter total system length. The combined length of the connected 3300 XL 11 mm probe and extension cable must equal 9.0 meters to maintain calibrated sensor linearity and prevent measurement errors.
• Field Wiring Connections: Utilize 3-conductor shielded triad cable (0.2 to 1.5 mm2 or 16 to 24 AWG field wire) to connect VT, COM, and OUT terminals to the monitoring system. Keep field wiring under the maximum limit of 305 meters (1000 feet) to prevent high-frequency signal roll-off.
• Electrostatic Discharge: Although terminals are protected against ESD, exercise proper handling procedures (such as wearing a grounded wrist strap) during field connection and configuration.

Compliance and Certifications

• CSA/NRTL/C: Class I, Zone 0: AEx/Ex ia IIC T4/T5 Ga; Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III (Intrinsically Safe when installed with approved zener barriers or galvanic isolators).
• ATEX/IECEx: II 1 G Ex ia IIC T4/T5 Ga; Ex ia IIIC T90C/T105C Dc (for EPL Dc). Ex nA IIC T5...T1 Gc; Ex ec IIC T5...T1 Gc (for EPL Gc).
• European Community Directive: CE mark compliant with EMC Directive (EN 61000-6-2 and EN 61000-6-4) and RoHS Directive (2011/65/EU).
• Functional Safety: Certified up to SIL 2 (HFT = 0) or SIL 3 (HFT = 1) configurations in machinery protection schemes.