Month: May 2025

Description
The 3300 XL 8 mm Proximity Transducer System consists of: o One 3300 XL 8 mm probe, o One 3300 XL extension cable1, and o One 3300 XL Proximitor Sensor2.
The system provides an output voltage that is directly proportional to the distance between the probe tip and the observed conductive surface and can measure both static (position) and dynamic (vibration) values. The system’s primary applications are vibration and position measurements on fluid-film bearing machines, as well as Keyphasor reference and speed measurements3.
The 3300 XL 8 mm system delivers the most advanced performance in our eddy current proximity transducer systems. The standard 3300 XL 8 mm 5-meter system also fully complies with the American Petroleum Institute’s (API) 670 Standard for mechanical configuration, linear range, accuracy, and temperature stability. All 3300 XL 8 mm proximity transducer systems provide this level of performance and support complete interchangeability of probes, extension cables, and Proximitor sensors, eliminating the need to match or bench calibrate individual components.
Each 3300 XL 8 mm Transducer System component is backward compatible and interchangeable4 with other non XL 3300 series 5 mm and 8 mm transducer system components5. This compatibility includes the 3300 5 mm probe, for applications in which an 8 mm probe is too large for the available mounting space6,7.
Proximitor Sensor
The 3300 XL Proximitor Sensor incorporates numerous improvements over previous designs. Its physical packaging allows you to use it in high-density DIN-rail installations. You can also mount the sensor in a traditional panel mount configuration, where it shares an identical 4-hole mounting “footprint” with older Proximitor Sensor designs. The mounting base for either option provides electrical isolation and eliminates the need for separate isolator plates. The 3300 XL Proximitor Sensor is highly immune to radio frequency interference, allowing you to install it in fiberglass housings without adverse effects from nearby

Technical analysis of Bently Nevada 125768-01 RIM I/O module

1. Core functions
   Interface configuration: integrated RS-232/RS-422 serial communication port.
   Protocol support: compatible with Modbus RTU/ASCII, specially designed for 3500 monitoring system.
   Signal conversion: realize bidirectional transmission of frame data and external system.

Jumper configuration
Terminal resistance: 120 Ω (enabled for RS-422 long-distance transmission)
Flow control mode: RTS/CTS hardware flow control (jumper J1:1-2)

Security and authentication
Industry standard:
API 670 (mechanical protection system)
IEEE 1156 (serial communication reliability)
Explosion-proof certification: ATEX Zone 2 (optional model)
Operational suggestion
Configuration steps:
Use 3500 configuration software to set Modbus register mapping (refer to section 4.5 of the document).
Disable unused protocols to reduce CPU load
EMC protection:
When the transmission distance of RS-422 is more than 15m, twisted-pair shielded cable (AWG22+) is used.

Description
3500 Internal Barriers are intrinsically safe interfaces that provide explosion protection for transducer systems connected directly to the 3500 Machinery Protection System. The internal barriers are fully compatible with the 3500 System and provide a convenient and cost-effective solution for installing all types of transducer systems within a hazardous area.
The internal barriers are fully compatible with the 3500 System and provide a convenient and cost-effective solution for installing all types of transducer systems within a hazardous area
Unlike external barriers, 3500 Internal Barriers are an integral part of the 3500 System and will not degrade the system’s performance.  
We offer Bently Nevada transducer systems with comprehensive approvals for hazardous area installations. The transducer systems are matched to those of the 3500 Internal Barriers. See Compatible Monitors and Transducers on page 8.

Each component complies both individually and as part of a system with the safety requirements of North American and international standards.  Hence, you don’t have to reference individual certificates to verify the compatibility between components.
Standard and internal barrier monitors can reside within the same 3500 rack. You can upgrade standard monitors  by replacing existing I/O modules with those that contain internal barriers
Installation Guidelines
The internal barriers for a 3500 rack are incorporated in special Monitor I/O Modules.   These barriers provide explosion protection for transducer systems that are connected to the 3500 system.  An intrinsically safe (IS) earthing module provides the IS earth connection through the 3500 system backplane. The IS Earth Module requires a dedicated I/O module position and precludes the use of this monitor position for other 3500 System modules.  This limits a standard 19-inch rack to 13 monitor positions.  Furthermore, a number of installation options are not available when internal barriers are installed in a 3500 rack.For users who need to know or purchase such equipment, they can contact the supplier for more information by email itadcs@163.com or WhatsApp message +86 17750019513.

Core characteristics
4-channel independent monitoring
Support radial vibration, thrust position, differential expansion, eccentricity and REBAM (shaft relative vibration) measurement.
Static value parameters (such as peak-peak value, GAP voltage, etc.) can be configured independently for each channel.
High precision signal conditioning
Adapted to Bently Nevada eddy current sensor (such as 3300/7200 series), with input range of -2V to -18V DC.
Dynamic signal processing ensures high resolution measurement (typical accuracy 1% fs).
Flexible alarm configuration
Each channel supports two-level alarm (Alert/Danger), and the threshold is programmable.
Can be associated with static values (such as 1X amplitude and phase) to trigger protection logic.
Modular extended design
Plug and play installed in 3500 rack (compatible with 125388-01 chassis).
Through the rapid configuration of 3500 configuration software, it supports hot plug maintenance.