Bently Nevada

Bently Nevada 330878-90-00 3300 XL 50 mm Proximitor Sensor

SKU 330878-90-00

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Bently Nevada
  • Product No.: 330878-90-00
  • Origin United States
  • Product Type: 3300 XL 50 mm Proximitor Sensor
  • Barcode: 8537101190
  • Payment: T/T, Western Union
  • Weight: 0.55 kg
  • Dimensions: 90 mm x 140 mm x 140 mm (H x W x D)
  • Shipping port: Xiamen
  • Warranty: 12 months

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Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Bently Nevada 330878-90-00 3300 XL 50 mm Proximitor Sensor

Quantity

Product Description

Description

330878-90-00: 3300 XL 50 mm Proximitor Sensor configured for 9.0 meters (29.5 feet) system length, panel mounting, and no agency approvals.

The 3300 XL 50 mm proximity transducer system consists of a separate 50 mm probe, extension cable, and Proximitor sensor. It offers a maximum linear range of 27.9 mm (1100 mils) to measure differential expansion (DE) or rotor expansion (RX) on large steam turbine generators. Unlike variants with option codes -50 or -51 (5.0 m system length) or those configured for DIN-rail mounting (options -51 and -91), this panel-mounted 9.0-meter option (90) matches with a 1.0 m probe and an 8.0 m extension cable, or a 9.0 m total calibration length. The -00 agency option specifies a configuration where hazardous area certifications are not required.

Features

  • Option 90 specifies a 9.0-meter system length calibrated for panel mounting configurations.
  • Option 00 specifies a configuration with no agency approvals.
  • Linear range of 27.9 mm (1100 mils) starting at approximately 1.3 mm (50 mils) from target.
  • Average scale factor of 394 mV/mm (10 mV/mil) nominal.
  • Deviation from best fit straight line is within plus-minus 0.74 mm (plus-minus 29 mils).
  • SpringLoc terminal strips facilitate faster, high-density field wiring connections.

Applications

  • Differential expansion (DE) measurements on steam turbine generators
  • Rotor expansion (RX) monitoring
  • Large turbine rotors or oversized target axial position tracking

Ordering Information

Option Code on This SKU Description
Orderable Part Number 330878-90-00 3300 XL 50 mm Proximitor Sensor
Option A - Total Length and Mounting 90 9.0 meters (29.5 feet) system length, panel mount
Option B - Agency Approval Option 00 No Approvals

Technical Specifications

Parameter Specification
Manufacturer Bently Nevada
Part Number/Model 330878-90-00
Transducer System Compatibility 3300 XL 50 mm Proximity Transducer System
Proximitor Input Accepts one non-contacting 3300 XL 50 mm Proximity Probe and Extension Cable
Linear Range 27.9 mm (1100 mils) starting at approximately 1.3 mm (50 mils) from target
Average Scale Factor (ASF) 394 mV/mm (10 mV/mil) nominal
Deviation from Best Fit Straight Line (DSL) Less than plus-minus 0.74 mm (plus-minus 29 mils)
System Performance over Temperature DSL remains within plus-minus 2.03 mm (plus-minus 80 mils) over extended temperatures
Recommended Minimum Target Size 102 mm (4.0 in) diameter flat target (AISI 4140 steel)
Power Supply Requirement Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum consumption (-23 Vdc to -26 Vdc with barriers)
Output Resistance 50 ohms
Operating Temperature Range -51 degC to +100 degC (-60 degF to +212 degF)
Storage Temperature Range -51 degC to +105 degC (-60 degF to +221 degF)
Relative Humidity Limits Less than 3% change in Average Scale Factor (ASF) when tested in accordance with IEC standard 68-2-66

Connections and Interfaces

Terminal Name Function
VT Power Supply Input (-17.5 Vdc to -26 Vdc)
OUT Signal Voltage Output (approximately -1.5 Vdc to -12.5 Vdc)
COM Signal Common / Ground Reference

Installation Guidelines

The Proximitor Sensor utilizes SpringLoc terminal strips requiring no special tools for field wiring, supporting conductors from 0.2 to 1.5 mm2 (16 to 24 AWG). A three-conductor shielded triad cable is recommended for signal routing. When installing, ensure that the total system length (9.0 meters) corresponds precisely to the probe and extension cable combined lengths. The panel mount bracket is secured to the panel using the mounting holes provided in the base plate.

Shipping & Returns

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.

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 technical warranty.
FAQ
What is the function of the Bently Nevada 330878-90-00 Proximitor Sensor?
This sensor is part of the 3300 XL 50 mm Proximity Transducer System. It generates a dynamic output signal proportional to the distance between the probe tip and a target, primarily used for measuring differential expansion (DE) or rotor expansion (RX) on steam turbines.
What is the total system length and mounting configuration of this specific model?
The 330878-90-00 is configured with Option 90, which specifies a 9.0-meter total system length and a panel-mounting bracket.
Does the 330878-90-00 sensor carry any hazardous area agency approvals?
No, the Option 00 suffix indicates that this specific configuration is supplied with no agency approvals.
What type of field wiring and terminals does the Proximitor sensor use?
It features SpringLoc terminal strips that require no special installation tools and support wire sizes from 0.2 to 1.5 mm2 (16 to 24 AWG). A three-conductor shielded triad cable is recommended.
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330878-90-00

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Bently Nevada 330878-90-00 3300 XL 50 mm Proximitor Sensor

Only 3 item(s) left in stock
  • Manufacturer: Bently Nevada

  • Product No.: 330878-90-00

  • 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

Quantity
View full details

Product Description

Description

330878-90-00: 3300 XL 50 mm Proximitor Sensor configured for 9.0 meters (29.5 feet) system length, panel mounting, and no agency approvals.

The 3300 XL 50 mm proximity transducer system consists of a separate 50 mm probe, extension cable, and Proximitor sensor. It offers a maximum linear range of 27.9 mm (1100 mils) to measure differential expansion (DE) or rotor expansion (RX) on large steam turbine generators. Unlike variants with option codes -50 or -51 (5.0 m system length) or those configured for DIN-rail mounting (options -51 and -91), this panel-mounted 9.0-meter option (90) matches with a 1.0 m probe and an 8.0 m extension cable, or a 9.0 m total calibration length. The -00 agency option specifies a configuration where hazardous area certifications are not required.

Features

  • Option 90 specifies a 9.0-meter system length calibrated for panel mounting configurations.
  • Option 00 specifies a configuration with no agency approvals.
  • Linear range of 27.9 mm (1100 mils) starting at approximately 1.3 mm (50 mils) from target.
  • Average scale factor of 394 mV/mm (10 mV/mil) nominal.
  • Deviation from best fit straight line is within plus-minus 0.74 mm (plus-minus 29 mils).
  • SpringLoc terminal strips facilitate faster, high-density field wiring connections.

Applications

  • Differential expansion (DE) measurements on steam turbine generators
  • Rotor expansion (RX) monitoring
  • Large turbine rotors or oversized target axial position tracking

Ordering Information

Option Code on This SKU Description
Orderable Part Number 330878-90-00 3300 XL 50 mm Proximitor Sensor
Option A - Total Length and Mounting 90 9.0 meters (29.5 feet) system length, panel mount
Option B - Agency Approval Option 00 No Approvals

Technical Specifications

Parameter Specification
Manufacturer Bently Nevada
Part Number/Model 330878-90-00
Transducer System Compatibility 3300 XL 50 mm Proximity Transducer System
Proximitor Input Accepts one non-contacting 3300 XL 50 mm Proximity Probe and Extension Cable
Linear Range 27.9 mm (1100 mils) starting at approximately 1.3 mm (50 mils) from target
Average Scale Factor (ASF) 394 mV/mm (10 mV/mil) nominal
Deviation from Best Fit Straight Line (DSL) Less than plus-minus 0.74 mm (plus-minus 29 mils)
System Performance over Temperature DSL remains within plus-minus 2.03 mm (plus-minus 80 mils) over extended temperatures
Recommended Minimum Target Size 102 mm (4.0 in) diameter flat target (AISI 4140 steel)
Power Supply Requirement Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum consumption (-23 Vdc to -26 Vdc with barriers)
Output Resistance 50 ohms
Operating Temperature Range -51 degC to +100 degC (-60 degF to +212 degF)
Storage Temperature Range -51 degC to +105 degC (-60 degF to +221 degF)
Relative Humidity Limits Less than 3% change in Average Scale Factor (ASF) when tested in accordance with IEC standard 68-2-66

Connections and Interfaces

Terminal Name Function
VT Power Supply Input (-17.5 Vdc to -26 Vdc)
OUT Signal Voltage Output (approximately -1.5 Vdc to -12.5 Vdc)
COM Signal Common / Ground Reference

Installation Guidelines

The Proximitor Sensor utilizes SpringLoc terminal strips requiring no special tools for field wiring, supporting conductors from 0.2 to 1.5 mm2 (16 to 24 AWG). A three-conductor shielded triad cable is recommended for signal routing. When installing, ensure that the total system length (9.0 meters) corresponds precisely to the probe and extension cable combined lengths. The panel mount bracket is secured to the panel using the mounting holes provided in the base plate.

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Bently Nevada 330878-90-00 3300 XL 50 mm Proximitor Sensor

What is the function of the Bently Nevada 330878-90-00 Proximitor Sensor?

This sensor is part of the 3300 XL 50 mm Proximity Transducer System. It generates a dynamic output signal proportional to the distance between the probe tip and a target, primarily used for measuring differential expansion (DE) or rotor expansion (RX) on steam turbines.

What is the total system length and mounting configuration of this specific model?

The 330878-90-00 is configured with Option 90, which specifies a 9.0-meter total system length and a panel-mounting bracket.

Does the 330878-90-00 sensor carry any hazardous area agency approvals?

No, the Option 00 suffix indicates that this specific configuration is supplied with no agency approvals.

What type of field wiring and terminals does the Proximitor sensor use?

It features SpringLoc terminal strips that require no special installation tools and support wire sizes from 0.2 to 1.5 mm2 (16 to 24 AWG). A three-conductor shielded triad cable is recommended.

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).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern
Blue Silver
Country of origin
United States

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