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Bently Nevada 330878-50-00 3300 XL Proximitor Sensor with 27.9 mm Linear Range, 5.0-Metre Panel-Mount System, and API 670 Compliance
Bently Nevada 330878-50-00 3300 XL Proximitor Sensor with 27.9 mm Linear Range, 5.0-Metre Panel-Mount System, and API 670 Compliance
3300 XL 50 mm Proximitor Sensor rotor expansion monitoring
differential expansion measurement Bently Nevada eddy current sensor
steam turbine generator protection Bently Nevada 3500 system spares
Place of Origin:
USA
Brand Name:
Bently Nevada
Model Number:
330878-50-00
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Product Details
Model:
330878-50-00
Country Of Origin:
USA
Place Of Shipment:
Xiamen,China
Shipping:
TNT, DHL, FedEx, EMS, UPS
MOQ:
1 Piece
Packaging:
Original New Packaging
Estimated Shipping Size:
7.8x6x6.2cm
Weight:
0.2 Kg
Highlight:
3300 XL 50 mm Proximitor Sensor rotor expansion monitoring
,differential expansion measurement Bently Nevada eddy current sensor
,steam turbine generator protection Bently Nevada 3500 system spares
Payment & Shipping Terms
Minimum Order Quantity
1
Price
66USD
Packaging Details
Brand new and original
Delivery Time
2-3 work days
Payment Terms
T/T
Supply Ability
in stock
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Product Description
Bently Nevada 330878-50-00 3300 XL 50 mm Proximitor Sensor
| Parameter | Specification |
|---|---|
| Model Number | 330878-50-00 |
| Device Type | 3300 XL 50 mm Proximitor Sensor |
| System Length | 5.0 metres (16.4 feet) |
| Mounting Option | Panel Mount |
| Agency Approvals | No approvals |
| Linear Range | 27.9 mm (1100 mils) |
| Scale Factor (ASF) | 0.394 V/mm (10 mV/mil) nominal |
| Input Voltage | -17.5 Vdc to -26 Vdc |
| Current Consumption | 12 mA maximum |
| Default Target Material | AISI 4140 Steel |
| Operating Temperature | -51 °C to +100 °C (-60 °F to +212 °F) |
Key Features
- Extremely Long Linear Range
This one’s built for big movement. You’re looking at about 27.9 mm (1100 mils) of linear range, which is honestly quite a lot for this type of proximity setup. In real heavy rotating machinery, that kind of travel makes a difference when you’re tracking large shaft or structural movement. - Dedicated Differential Expansion Monitoring
Usually used where Differential Expansion (DE) and Rotor Expansion (RX) matter. In steam turbine generators especially, this is the kind of measurement you don’t want to get wrong—helps avoid axial rub situations that can get expensive very quickly. - 5-Metre Panel-Mount System Design
Comes as a 5.0-metre total system length configuration. It’s set up in a way that fits cleanly into standard industrial panels or enclosures, so installation is pretty straightforward in 3300 XL 50mm proximity sensor type setups. - Advanced Eddy Current Technology
Based on non-contact eddy current sensing, so nothing physically touches the target. You get continuous displacement feedback, and the scale factor sits around 0.394 V/mm (10 mV/mil) when working against AISI 4140 steel. Stable output, even in noisy machine environments. - Full API 670 Compliance
Designed with API 670 in mind, which basically means it’s aligned with machinery protection expectations in power and process industries. This is important for emergency shutdown systems (ESD) where reliability is not optional. - Seamless 3500 Rack System Integration
Works directly with Bently Nevada 3500 series rack modules, including things like the 3500/45 Position Monitor. In practice, it just slots into existing 3500 system spares architecture without much hassle, especially for Bently Nevada 330878-50-00 / 3300 XL proximity transducer setups. - Rugged Industrial Durability
Temperature range is wide—around -51 °C up to +100 °C—so it holds up in power plants and other harsh industrial environments. Steam turbine and large rotating machinery applications are basically where it feels at home.
Applications
- Steam Turbine Generator Protection
Commonly seen in thermal and nuclear plants where turbine behavior during start-up really matters. The probe tracks axial growth of the rotor against the casing, and in practice it helps engineers keep an eye on structural safety when temperatures are ramping up or cooling down fast. - Differential Expansion (DE) & Rotor Expansion (RX) Measurement
This is basically for those big, slow but significant movements in rotating machines. DE and RX readings help catch thermal growth early, so you’re not ending up with internal rubs or blade contact situations that can escalate quickly in steam turbine environments. - Critical Asset Protection & Emergency Shutdown Systems (ESD)
Usually tied into API 670-style protection setups. The sensor keeps feeding continuous data into the system, and if things drift outside safe limits, it can support alarms or even trip logic before actual mechanical damage happens. It’s one of those “better safe than sorry” layers in the protection chain. - Large Industrial Rotating Machinery Monitoring
You’ll find this kind of setup on large compressors, gas turbines, and high-capacity pumps. It’s used to watch axial movement and structural shift that you don’t really want to guess on, especially in heavy-duty continuous operation. - Bently Nevada 3500 System Field Integration
On the system side, it’s basically the field interface feeding eddy current signals back into the 3500 rack environment. Works with modules like the 3500/45 Position Monitor, sitting in the loop as part of the overall Bently Nevada 3300 XL / 330878-50-00 proximity measurement chain.
Frequently Asked Questions
What does Amikon do?
We supply original PLC, DCS, and TSI spare parts to factories worldwide. If you need heavy industry components like the Bently Nevada 330878-50-00, we can source them quickly to keep your plant running.
Are the parts brand new?
Yes, everything we ship is 100% brand new and factory-sealed. All parts come with our standard warranty and full tracking.
How fast can you ship?
We keep a large inventory of major industrial brands in our own warehouse. This means we can pack and ship your orders immediately, cutting down your waiting time from weeks to days.
Why get a quote from us?
You deal with a professional team, get wholesale prices, and receive real-time updates on your shipment. We help you cut procurement costs without risking quality.
Technical Q&A
What is the primary function of the Bently Nevada 330878-50-00 Proximitor Sensor in machinery protection?
330878-50-00 basically runs as a 3300 XL 50 mm Proximitor Sensor for displacement. In turbine work it’s mostly sitting there watching Differential Expansion (DE) and rotor expansion. Nothing complicated in concept—just picking up axial movement so the machine doesn’t end up with internal rubs when things heat up or cool down.
What do the specific suffixes "-50" and "-00" signify in the part number 330878-50-00?
“-50” = 5.0 m system length, usually the panel mount type you see in 3500 setups.
“-00” = standard version, no special hazardous approvals. Basically for normal industrial sites, not classified zones.
“-00” = standard version, no special hazardous approvals. Basically for normal industrial sites, not classified zones.
What are the key linear range and scale factor specifications for the 330878-50-00 sensor?
Linear range is about 27.9 mm (1100 mils), which is why it gets used on larger rotating machinery. Scale factor sits around 0.394 V/mm (10 mV/mil) on AISI 4140 steel. Output is typical eddy current style—steady, predictable.
Is the 330878-50-00 compliant with international industry standards for emergency shutdown systems?
Yes, it aligns with API 670 requirements. In practice, it just means it’s accepted in machinery protection loops, including ESD systems in power plants. Nothing special to configure from that angle.
How does the 330878-50-00 interface with the Bently Nevada 3500 rack system?
It feeds signal from the field side into the 3500 rack. Usually ends up on modules like the 3500/45 Position Monitor. In real installations, it’s just one part of the Bently Nevada 3300 XL proximity chain—sensor on the machine side, rack handling the monitoring logic.
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