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The Amikon Edge 63,000-sq-ft facility | 20 Years Experience | Emergency Dispatch
Our Mission Eliminating downtime through aggressive sourcing and rapid logistics.
Global Support Personalized service for every offer--helping you get back to production in record time.
Industrial Applications
Steam Turbine Supervisory Instrumentation (TSI) Deployed as a vital component in steam turbine monitoring systems to continuously track casing and rotor behaviors under extreme thermal and mechanical loads.
Critical Differential Expansion (DE) Monitoring Specially optimized for ramp differential expansion and complementary differential expansion measurements to prevent catastrophic axial contact between rotating blades and stationary turbine parts.
Shaft Displacement & Axial Position Measurement Utilized as a high-reliability non-contact proximity sensor to capture precise shaft displacement and axial drift in mid-to-large-scale industrial rotating machinery.
Power Plant & Petrochemical Instrumentation Acts as the front-end eddy current sensor interface for power plant instrumentation, delivering explosive-proof (-05 option) critical asset protection in hazardous areas.
Large Turbo-Generator & Compressor Protection Widely installed in massive centrifugal compressor monitoring and gas turbine protection loops to ensure early detection of mechanical anomalies and trigger emergency shutdown systems (ESD).
API 670 Compliant Machinery Protection System (MPS) Integrates seamlessly with the Bently Nevada 3500 rack system (such as the 3500/40M Proximitor Monitor) to build a fully certified, API 670 compliant machinery protection architecture.
Key Features
Engineered for 3300 XL 25mm System Fully compatible with Bently Nevada 3300 XL 25 mm Proximity Transducer Systems, acting as a high-precision eddy current probe driver for critical asset protection.
Advanced Differential Expansion Monitoring Specifically designed for steam turbine monitoring and generator shaft displacement measurement, effectively optimizing mid-to-large-scale industrial rotating machinery safety.
9-Metre Integrated System Calibration Pre-calibrated for the -90 configuration option (9.0 metres system length), ensuring seamless signal matching with 25mm proximity probes and extension cables without field tuning.
Multiple Hazardous Area Approvals (-05) Comes with the -05 comprehensive global agency approval option, certified for explosive and dangerous atmospheres to support strict power plant instrumentation standards.
Excellent RFI/EMI Immunity & Signal Stability Features robust resistance to radio frequency and electromagnetic interference, outputting a stable Nominal Scale Factor of 0.787 V/mm (20 mV/mil).
Industrial-Grade DIN Rail & Panel Mount Built with a rugged A383 aluminum housing and high-density vibration-resistant SpringLoc strip terminals for quick, secure electrical wiring in tight cabinet spaces.
Seamless API 670 & 3500 System Integration Fully compliant with API 670 machinery protection system standards, working flawlessly as the front-end sensor interface for Bently Nevada 3500/40M Proximitor Monitors.
Frequently Asked Questions
Q1: What is the primary industrial function of the Bently Nevada 330850-90-05?
A1: The Bently Nevada 330850-90-05 / 3300 XL 25mm Proximitor Sensor is mainly used as a non-contact proximity sensor in heavy rotating machinery setups. In practice, you’ll see it working in shaft displacement measurement and also differential expansion monitor / ramp differential expansion applications. Usually it sits inside steam turbine monitoring systems or other large turbine trains. Basically, it behaves like an eddy current probe driver, feeding stable displacement signals into the TSI (turbine supervisory instrumentation) system so operators can catch movement trends early.
Q2: What do the specific suffixes "-90" and "-05" represent in the 330850-90-05 part number?
A2: The structure is more configuration-based than people think. “-90” is generally tied to a 9m proximity sensor system length setup, commonly used for cabinet or panel mounting layouts. “-05” points to multiple approvals, meaning the unit comes with broader certification coverage (typically ATEX, IECEx, CSA, depending on project requirements). So in real applications, this version often ends up in hazardous area proximity sensor environments like power plants, oil & gas facilities, or other explosive-risk zones.
Q3: Which systems is the 330850-90-05 compatible with?
A3: The 330850 Proximitor Sensor is fully aligned with the Bently Nevada 3300 XL series and integrates smoothly into the 3500 rack system. A typical setup includes the 3500/40M Proximitor Monitor, a matched 3300 XL 25mm probe, and the corresponding extension cable to complete the full 9m proximity sensor system loop. It’s widely used in machinery protection system (MPS) architectures and turbine supervisory instrumentation (TSI), especially where API 670 compliant sensor standards are required.
Q4: What are the electrical and wiring specifications of the 330850-90-05 Proximitor Sensor?
A4: Power input is usually in the range of -17.5 Vdc to -26 Vdc, nothing unusual for this series. Output sensitivity is a standard 0.787 V/mm (20 mV/mil), consistent with the 3300 XL 25mm transducer family. Wiring uses SpringLoc terminal sensor design, supporting 16–24 AWG wire, and it’s generally easier during field installation, especially when vibration is a concern. The housing is A383 aluminum, and the unit has strong RFI/EMI immune proximity sensor performance, which helps in electrically noisy industrial environments like turbine halls or generator rooms.
Q5: What is the linear measurement range and target material requirement for the 330850-90-05?
A5: The sensor provides a linear range of 12.7 mm (500 mils), starting from roughly 0.63 mm (25 mils) from the target surface. For accurate calibration, the target isn’t flexible—you typically need a flat AISI 4140 steel surface, with at least a 61 mm diameter. In real-world industrial vibration analysis or generator differential expansion monitoring, this condition matters quite a bit. If the target isn’t right, readings can drift or lose stability, especially in high-speed rotating machinery setups.
Compatible Products
Product 1
Product 2
3500/72M 176449-08
3300/55
3500/62 163179-03
330780-50-00
3500/40M 140734-01
330180-50-00
330500-02-00
330130-045-00-00
135137-01
330180-51-05
149992-02
330130-040-00-05
147663-01
330103-00-05-05-02-00
3500/94 145988-01
330180-51-00
140482-01
330103-00-03-05-02-00
330500-00-20
330730-040-00-00
170133-090-00
330780-90-00
3500/32M 149986-02
330180-91-00
1900/65A 172323-01
3500/25 149369-01
330180-X0-05
3500/20 125744-02
125720-01
133827-01
125760-01
JNJ5300-08-03-000-060-10-00-00-03
125768-01
JNJ5300-08-045-00-00
128229-01
JNJ5300-08-06-005-030-05-00-00-03
128240-01
3500/90
133396-01
330130-080-00-00
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Trading Company
Year Established:
2004
Total Annual:
85682000-125000000
Employee Number:
70~80
Ecer Certification：
Verified Supplier
Company Profile
Amikon Limited specializes in the global supply of industrial automation module spare parts.The company focuses on well-known international brands covering DCS systems, robot control systems, and large-scale servo control systems.
Product scope includes:
➢Distributed Control Syste... Company Profile
Amikon Limited specializes in the global supply of industrial automation module spare parts.The company focuses on well-known international brands covering DCS systems, robot control systems, and large-scale servo control systems.
Product scope includes:
➢Distributed Control Syste...
