3300/15-02-01-03-00-00-00 Product Detailed Specification

I. Product Overview

3300/15-02-01-03-00-00-00 is a dedicated axial displacement monitoring module of the 3300 series by Bently, belonging to the core hardware unit of the industrial rotating machinery online condition monitoring system. This model is the original factory standard configuration dual-channel axial displacement monitoring equipment, specially designed for the axial movement, thrust gap, and position change monitoring of the rotor of large and high-speed rotating units. The module adopts the mature eddy current measurement principle, featuring high measurement accuracy, good zero-point stability, long-term no drift, and strong resistance to on-site interference. It can achieve 7×24-hour uninterrupted real-time monitoring. It is mainly used to capture hidden faults such as slow axial displacement deviation, instantaneous movement, and abnormal thrust pad wear of the unit, providing continuous and reliable on-site monitoring data for the safe operation, interlock protection, start-stop control, and preventive maintenance of the unit. It is widely used in key continuous production conditions in industries such as power and chemical.

II. Model Configuration Explanation

The complete model code of this equipment corresponds to the original factory standard configuration definition, being a dual-channel axial displacement monitoring specification. It is equipped with standard signal input mode, fixed standard range configuration, and conventional alarm output configuration. There are no special customization expansion functions, no redundant configuration, and no special communication customization. Compared with other sub-models of the same series, this version is an industrial general mainstream configuration, suitable for the majority of steam turbines and compressors' axial displacement monitoring standard conditions. The hardware architecture is simple and stable, with low failure rate and strong versatility. It is one of the most commonly used standard models for on-site shaft system protection. The entire machine strictly follows the 3300 series modular unified design specification. Mechanical dimensions, installation methods, electrical interfaces, and signal outputs are common to all products in the series. It supports on-site replacement, interchange, and system expansion.

III. Product Basic Characteristics

This module adopts an industrial standard cabinet rail-mounted installation structure. The overall structure is compact, suitable for the installation space of conventional low-voltage control cabinets and unit instrument cabinets. The wiring is standardized, and disassembly and assembly are convenient. The entire machine is designed and manufactured in accordance with industrial electromagnetic compatibility specifications and electrical safety standards, capable of withstanding complex electromagnetic environments, voltage fluctuations, and changes in environmental temperature and humidity in industrial sites. The equipment has undergone full-scale calibration of the full range accuracy, linearity testing, high and low temperature aging tests, and signal stability tests before leaving the factory. The measurement linearity is excellent, with no zero-point offset or range drift during long-term operation. The on-machine debugging is simple, and no complex parameter setting is required to be able to be put into long-term operation. The module supports all-weather uninterrupted continuous operation. The hardware has excellent anti-aging and anti-vibration performance, fully meeting the requirements of industrial key units for continuous operation without shutdown throughout the year.

IV. Core Function Characteristics

The core function of this module is the dual-channel independent monitoring of the axial displacement and axial movement of the rotating machinery rotor. The two channels operate independently and do not interfere with each other. They can simultaneously collect signals from two eddy current sensors to achieve high-precision axial system position monitoring. The device is equipped with a complete front-end signal processing circuit that can amplify, filter, reduce noise, perform linear correction, and convert analog signals, effectively filtering out interference from motors, frequency converters, and high-voltage equipment in the field. It accurately restores the true axial position state of the rotor.

The module supports custom safety monitoring thresholds, alarm thresholds, and danger thresholds, and has a hierarchical alarm judgment function. When there is abnormal deviation in the axial displacement of the unit, approaching the over-limit range or running beyond the limit, the module will automatically light up the local status indicator and simultaneously output standard analog signals and switch quantity alarm signals. It can directly connect to DCS, PLC, unit monitoring systems, and interlock protection systems to achieve remote monitoring, data upload, and safety interlock triggering. The equipment is equipped with functions such as status locking, fault self-checking, and signal anomaly recognition. It can actively detect issues such as sensor disconnection, abnormal signals, and line faults, facilitating rapid fault diagnosis by maintenance personnel and ensuring the reliable operation of the monitoring system itself.

V. Electrical and Operating Performance

The module is compatible with industrial standard DC power supply methods, with stable working voltage that conforms to the industrial instrument power supply specifications. The overall power consumption is low, and the temperature rise during continuous operation is small, without overheating, system freezing, or performance degradation. The signal input circuit is specifically matched for the 3300 series eddy current displacement sensors, with high input sensitivity, good measurement linearity, and extremely low signal distortion, capable of accurately capturing micrometer-level shaft position changes, fully meeting the requirements for precise monitoring of large-scale units. The standard range of the equipment is compatible with mainstream steam turbine units, compressor units for axial displacement monitoring, covering the normal operation range, warning range, and fault over-limit range of the units.

The data refresh speed is fast, providing real-time response to shaft dynamic changes, without data lag or delay, and can accurately reflect the shaft displacement status of the unit during start-stop, load variation, and steady-state operation. The module has a high electromagnetic anti-interference level, capable of operating stably in strong electromagnetic and strong vibration industrial sites, and the data accuracy is not affected by environmental interference. The working temperature and humidity range of the module is adapted to the normal conditions of indoor cabinets, with excellent dust-proof and moisture-proof performance, long average trouble-free operation time, and high industrial operation reliability.

VI. Supporting Adaptation System

This module must be combined with the original factory standard eddy current displacement probe of the 3300 series and dedicated extension cables to form a complete monitoring circuit. The interface of the supporting components is unified, the impedance is precisely matched, and the signal transmission is stable, which can maximize the measurement accuracy and linearity. On-site, industrial shielded signal cables can be used to complete the long-distance transmission of analog quantities and alarm signals, and are compatible with standard cabinet rails, terminal blocks, and other common installation accessories.

The module can be freely combined and assembled with the 3300 series power modules, other vibration monitoring modules, communication modules, and signal processing modules. It can be used to build a single cabinet centralized monitoring system according to the requirements of the monitoring points on site, supporting later system expansion, point addition, module replacement and renovation. The system components have strong market versatility, sufficient spare parts, and low maintenance costs, and are suitable for various renovation projects and new unit projects of all types.

VII. Application Industries and Applicable Equipment

This product is widely used in industrial fields such as thermal power generation, gas power generation, petrochemicals, coal chemical industry, oil and gas storage and transportation, metallurgical heavy industry, etc. It is a core instrument equipment for the safety protection of key power units. It is mainly adapted to steam turbine generators, gas turbines, large reciprocating and centrifugal process compressors, large axial flow fans, high-power high-speed pump sets, etc., especially suitable for core units with strict requirements for axial thrust clearance, shaft movement, and thrust plate safety control.

The equipment is generally installed in key production sites such as unit power workshops, turbine workshops, chemical plant unit areas, compressor workshops, etc., suitable for all continuous production scenarios that require continuous online monitoring, unit interlock protection, and condition-based maintenance management, effectively preventing major equipment accidents such as dynamic friction, thrust plate burnout, and unit collision and rubbing caused by shaft displacement exceeding the limit, ensuring long-term safe and stable operation of the unit.