Bently Nevada
50mm Proximitor 9m System 330878-91-05 Bently Nevada
In stock, ready to ship
Manufacturer: Bently Nevada
Product No.: 330878-91-05
Product Type: Proximitor Sensor
Product Origin: USA
Payment: T/T
Weight: 1900g
Shipping port: Xiamen
Warranty: 12 months
Yes, we provide a 30-day money-back guarantee for all purchases.
Yes, all items come with a 12-month warranty from the date of shipment.
Product Overview
The Bently Nevada 330878-91-05 is a 3300 XL 50 mm Proximitor Sensor for the 3300 XL 50 mm Proximity Transducer System. It delivers a 394 mV/mm (10 mV/mil) output over a 25.4 mm (1000 mil) linear range, designed for heavy equipment such as steam and gas turbines requiring extended displacement measurement capability.
Key Specs
- System length: 9.0 m (29.5 ft) total system length
- Mounting option: DIN mount
- Agency approval: 05 = Multiple approvals
- Output sensitivity: 394 mV/mm (10 mV/mil) nominal ASF
- Linear measurement range: 25.4 mm (1000 mil)
- Operating temperature: -51 to +100 °C
- Storage temperature: -51 to +105 °C
- Output resistance: 50 Ω
- Material: A380 aluminum
- Weight: 0.2 kg
Why Choose This
- Extended 25.4 mm linear range for extreme differential expansion applications
- MTBF exceeding 10 years for long-duration turbine monitoring
- Supports shafts with minimum diameter of 203 mm; target plate available for smaller shafts
- Visual status indicator via output voltage for quick gap verification
- Fully interchangeable with 3300 XL series components without recalibration
Common Questions
- What machines typically use the 50 mm system? Large steam turbines, gas turbines, and heavy-duty compressors with significant casing expansion or shaft movement.
- What is the minimum shaft diameter? 203 mm (8 in); for smaller shafts, a dedicated metal target plate eliminates the need for shaft modification.
- How quickly can it be replaced? Installation and commissioning can be completed within one hour due to plug-and-play interchangeability.
Mounting Steps
- Mount the Proximitor Sensor on the DIN rail using the integrated DIN clip.
- Connect the 3300 XL 50 mm extension cable from the probe to the Proximitor input.
- Wire the output terminals to the monitoring system channel.
- Apply -24 V DC power and verify the gap voltage reading.
- Confirm the monitoring system is configured for 50 mm probe scaling.
Buying Advice
- Select the 330878-91-05 for maximum displacement range up to 25.4 mm with DIN rail mounting.
- For panel mounting, specify the 330878-90-05 variant.
- Verify shaft diameter exceeds 203 mm or order the appropriate target plate for smaller shafts.