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The Bently Nevada 3300/45 Dual Differential Expansion Monitor is a legacy module that continuously measures the relative thermal growth between a machine's rotating rotor and stationary casing, preventing critical component damage in large assets like steam turbines.
Core Features
Dual-Channel Tracking: Features two independent channels to measure axial displacement, with the option to deactivate Channel B.
Four-Zone Alarms: Supports four customizable alarm setpoints per channel (two over-expansion and two under-expansion limits) for dual-direction trip protection.
Standard Outputs: Processes proximity probe inputs into isolated 4-20 mA or DC voltage recorder signals for DCS/PLC integration.
Built-in Safety: Equipped with high noise-immunity and a continuous hardware self-test (OK Circuit) to eliminate false trips.
Configuration Matrix (3300/45-AXX-BXX-CXX-DXX)
A (Full-Scale Range): Sets measurement limits and units (metric or English).
B (Transducer Input): Matches specific proximity probe models and scale factors.
C (Alarm Relay): Configures the hardware safety interlock relays.
D (Agency Approval): Selects hazardous area and explosion-proof certifications.
Global Industrial Automation Solutions
Amikon supplies industrial automation spare parts, mainly PLC, DCS, and TSI systems, to more than 160 countries.
North America: Shows steady demand, especially US and Canada. A lot of work comes from oil & gas plants and also automotive-related production sites.
Europe: Is similar in scale, Germany and UK stand out. You still see chemical plants and heavy equipment lines placing regular orders.
Middle East and Africa: Usually relate to refinery projects and mining sites. UAE, Saudi Arabia, South Africa come up often in shipments, sometimes also remote field installations.
Asia-Pacific: Is quite broad. China, Singapore, Australia, India … demand is mixed, from semiconductor fabs to power stations and metallurgy plants.
South America: Is smaller in volume but stable. Brazil, Chile, Argentina mostly connected with mining, copper operations, and hydropower projects.
100% Original Parts - Vetted industrial automation & DCS/PLC spares
Massive Inventory - 30,000+ items ready for immediate shipment
12-Month Warranty - Fully covered by a 1-year quality guarantee
Fast Global Shipping - Secure express delivery to 160+ countries
24/7 Rapid Response - Dedicated 1-on-1 customer service
Frequently Asked Questions
What is the primary operational purpose of the Bently Nevada 3300/45 in steam turbine monitoring?
The Bently Nevada 3300/45 is designed for critical asset protection, with a focus on axial thermal expansion during turbine startups and load transitions. As part of turbine supervisory instrumentation, it continuously monitors differential expansion between rotor and casing, helping prevent internal rub conditions or unwanted ESD trips under thermal stress.
How does the dual-channel tracking of the 3300/45 interface with a proximity sensor network?
The 3300/45 operates as a proximity sensor interface within a machinery protection card rack. It accepts dual-channel inputs from standard proximity probes or 3300 XL proximity transducer systems. Each channel processes displacement independently and converts probe gap signals into standardized electrical outputs for monitoring and diagnostics.
How do the four-zone alarm protection limits on the 3300/45 secure industrial rotating machinery?
Each channel of the 3300/45 applies four-zone alarm protection to handle changing thermal conditions. The configuration sets upper and lower expansion limits for trip and alarm functions. When axial displacement exceeds defined thresholds, the module activates alarm or trip logic to protect the machine.
What are the integration options for connecting a Bently Nevada 3300/45 to a modern DCS or PLC network?
The 3300/45 provides isolated 4–20 mA and DC voltage outputs for plant integration. These signals can be routed into DCS or PLC systems for continuous axial displacement monitoring. This allows legacy 3300 rack systems to remain compatible with API 670 based control architectures.
Since the 3300/45 is a legacy module, how can plants manage Bently Nevada spare parts lifecycle risks with Amikon?
As a discontinued 3300/45 legacy module, spare parts availability becomes important for long-term turbine monitoring reliability. Plants often source replacement units or refurbished inventory through suppliers such as Amikon to support existing 3300 monitoring system installations. This helps maintain uptime while delaying full system migration.
Compatible Part Numbers
330104-15-23-10-02-00
330878-50-00
330104-19-25-10-11-05
330103-00-12-10-01-00
330103-00-05-10-02-05
330103-00-16-10-01-00
330103-00-18-05-02-05
RS901104-03-050-10-01 R200602-400808
330130-045-02-05
330105-02-12-50-02-00
330101-00-08-05-02-05
350500-00-00-00-11-00
330130-085-00-05
330190-080-01-00
125388-01
3500/77M 140734-07
128275-01/128275-01F 130944-01
2201/03-01
330780-91-00
1900/65
330103-00-14-10-01-00
21747-080-00
330730-080-02-00
330730-080-01-00
330104-05-13-10-02-00
330930-060-00-00
3500/23E
125388-01H 125388-01
3500/15E
125720-02
136711-01
138708-01
330703-000-040-10-11-00
330104-00-08-10-02-00
330705-02-18-10-02-00
330105-02-12-05-02-CN
330703-000-070-10-02-00
330130-045-00-CN
330101-10-27-05-02-05
330103-00-04-05-02-00
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...
