Bently Nevada 330878-90-05 3300 XL 50 mm Proximitor Sensor

SKU 330878-90-05

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Manufacturer: Bently Nevada
Product No.: 330878-90-05
Country of origin:United States
Product Type: 3300 XL 50 mm Proximitor Sensor
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 550g
Dimensions: 90 mm x 140 mm x 140 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months

Description

Option 90 (9.0 meters system length, panel mount) and Option 05 (Multiple Approvals) specify this 3300 XL 50 mm Proximitor Sensor configuration — 330878-90-05.

While DIN mount configurations (Option 91) and 5.0-meter systems (Option 50 or 51) are available, this panel-mount, 9.0-meter system matches 330876 probes and 330877 extension cables for longer transmission distances. The Multiple Approvals selection allows installation in designated hazardous environments where compliance is required. The sensor utilizes advanced eddy-current technology to process displacement signals from a 50 mm probe, rendering it highly effective for differential expansion (DE) or rotor expansion (RX) measurements on steam turbine generators.

Features

System Length: Configured for a 9.0 m (29.5 ft) system length, providing compatibility with corresponding 50 mm probes and extension cables.
Mounting Style: Panel-mount physical design for secure attachment to mounting plates or internal enclosures.
Agency Approvals: Option 05 designates multiple global hazardous area certifications, including CSA, ATEX, and IECEx approvals.
Connection System: Built-in SpringLoc terminal strips provide fast, highly robust field connections without specialized tools.
RFI/EMI Immunity: Robust design elements shield signal integrity against nearby high-frequency radio interference.

Applications

Differential expansion (DE) measurement on utility steam turbine generators.
Rotor expansion (RX) monitoring to track thermal growth differentials.
Axial position and displacement tracking in heavy industrial rotating machinery.

Ordering Information

Option Segment	Code on This SKU	Description
Orderable Part Number	330878-90-05	3300 XL 50 mm Proximitor Sensor
A - Total Length and Mounting Option	90	9.0 meters (29.5 feet) system length, panel mount
B - Agency Approval Option	05	Multiple Approvals (CSA, ATEX, IECEx)

Technical Specifications

Parameter	Specification Value
Manufacturer	Bently Nevada (Baker Hughes)
Model Number	330878-90-05
Linear Range	27.9 mm (1100 mils)
Linear Range Limits	Begins at 1.3 mm (50 mils) to 29.2 mm (1150 mils) from target
Average Scale Factor (ASF)	394 mV/mm (10 mV/mil) nominal
Deviation from Best Fit Straight Line (DSL)	Less than +/-0.74 mm (+/-29 mils)
Output Impedance	50 ohms
Power Requirements	-17.5 Vdc to -26 Vdc without barriers; -23 Vdc to -26 Vdc with barriers
Current Consumption	12 mA maximum
Input Sensor Compatibility	Accepts one 3300 XL 50 mm proximity probe and extension cable
Field Wiring Terminal Capacity	0.2 to 1.5 mm2 (16 to 24 AWG)
Recommended Field Wire Type	Three-conductor shielded triad cable
Operating Temperature	-51 degC to +100 degC (-60 degF to +212 degF)
Storage Temperature	-51 degC to +105 degC (-60 degF to +221 degF)
Housing Material	A380 aluminum

Connections and Interfaces

Terminal Label	Function Description	Wiring Specification
VT	Power supply input (-17.5 to -26 Vdc)	0.2 to 1.5 mm2 (16 to 24 AWG) shielded triad
COM	Common / Ground reference	0.2 to 1.5 mm2 (16 to 24 AWG) shielded triad
OUT	Dynamic analog output voltage signal	0.2 to 1.5 mm2 (16 to 24 AWG) shielded triad

Installation Guidelines

Mounting: Mount the Proximitor Sensor on a clean, flat surface using the standard panel-mount configuration holes.
Shield Grounding: Ensure the field wiring shield is connected to the monitor common ground and insulated at the Proximitor end to prevent ground loops.
Terminal Connection: Depress the SpringLoc lever, insert the stripped conductor (0.2 to 1.5 mm2), and release to secure. No special tools are needed.
Minimum Cable Bend Radius: Maintain a minimum bend radius of 25.4 mm (1.0 in) for coaxial and triaxial system cables to prevent signal loss or conductor damage.

Compliance and Certifications

Certification Body / Standard	Approval Details
CE Mark	Complies with European Community Directive 2014/30/EU (EMC) and RoHS Directive 2011/65/EU
EMC Standards	EN 61000-6-2 (Immunity) and EN 61000-6-4 (Emissions) for Industrial Environments
North American Approvals (cNRTLus)	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
ATEX / IECEx	Ex ia IIC T5...T1 Ga, Ex ia IIIC T90 degC...T280 degC Dc; Ex nA IIC T5...T1 Gc, Ex ec IIC T5...T1 Gc
Maritime	2019 Rules for Conditions of Classification

FAQ

What does the 90 option in part number 330878-90-05 signify?

The 90 option indicates a 9.0 meter (29.5 feet) total system length configured for panel mounting. It must be paired with a matching 3300 XL 50 mm proximity probe and extension cable that sum to a 9.0 meter length.

Which sensor approvals are included under the 05 option?

The 05 option represents Multiple Approvals, providing certifications for hazardous locations from standard bodies such as CSA, ATEX, and IECEx.

What is the nominal scale factor of the 3300 XL 50 mm proximity system?

The system has a nominal Average Scale Factor (ASF) of 394 mV/mm (10 mV/mil) over a maximum linear range of 27.9 mm (1100 mils).

Does this Proximitor Sensor require special tools for field wiring?

No, the sensor features SpringLoc terminal strips that enable secure field wiring connections without requiring specialized tools.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

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TECHNICAL SPECIFICATIONS

Color pattern	Blue Silver
Country of origin	United States