Bentley 3300/16-02-02-03-01-00-00 Product Description

I. Product Introduction

The Bentley 3300/16-02-02-03-01-00-00 belongs to the 3300 series of Benkelby Nevada, a dual-channel XY/GAP vibration and shaft clearance monitoring module. It is specifically designed for online condition monitoring and safety interlock protection of various rotating machinery in industrial applications. This module can simultaneously complete the real-time collection and monitoring of two paths of vibration and shaft clearance. It can accurately identify typical operating faults such as rotor imbalance, misalignment of the shaft system, bearing wear, and shaft position deviation. The product integrates functions such as data acquisition, local display, hierarchical alarm, multi-channel signal output, hardware self-diagnosis, remote communication, etc. It adopts a standardized rack modular design and can be installed in the 3300 series system cabinet, providing excellent electromagnetic interference resistance and environmental adaptability. The equipment operates stably and reliably, and is widely used in core power units of industries such as power, petrochemicals, metallurgy, and water supply, providing a complete set of monitoring guarantees for equipment fault early warning, operation status control, and safety shutdown interlock.

II. Basic Information

This product is manufactured by Benkelby Nevada and belongs to the classic 3300 industrial condition monitoring series. The product model is 3300/16-02-02-03-01-00-00. The equipment type is a dual-channel radial vibration and shaft clearance integrated monitor. The core functions include dual-channel vibration amplitude measurement, voltage collection of shaft and bearing clearance, calculation of the average position of the shaft, multi-level alarm output, customized signal output, fault self-diagnosis, remote parameter configuration and data monitoring. The equipment is compatible with dedicated specifications of eddy current probes and preamplifier systems, and has corresponding sensitivity matching circuits, which can be connected to the specified model of sensing equipment on-site. The entire machine adopts an industrial standard 19-inch rack installation structure and can be directly embedded in the same series monitoring cabinet. The product has passed CE electromagnetic compatibility certification and can operate continuously in industrial sites with high dust content, complex electromagnetic environments, and large temperature and humidity fluctuations.

III. Functions and Positioning

The module is equipped with two independent measurement channels that are electrically isolated from each other. The signals between the channels do not interfere with each other. It can simultaneously monitor the radial vibration in the X and Y directions of a single rotating equipment, or conduct parameter monitoring for two different units separately. The two sets of data are independently calculated, and the alarm and output logic are completely independent. While monitoring the vibration amplitude, the equipment continuously collects the gap voltage between the shaft and the bearing, converts it into the average operating position of the shaft, and realizes dual monitoring of vibration and shaft system position, providing a comprehensive feedback of the overall operating condition of the rotor and bearing, and predicting potential faults in advance.

The equipment is equipped with an early warning and danger-level alarm system. The alarm threshold and alarm delay of each channel can be flexibly set through the local panel or the upper-level monitoring software. When the monitoring parameters exceed the preset limit, the corresponding status indicator light on the panel lights up, and at the same time drives the relay to output a switch signal. It can be connected to on-site sound and light alarm devices and the unit interlock system to achieve hierarchical safety protection. The module supports single-channel and dual-channel bypass functions. During sensor calibration, line maintenance, and equipment shutdown maintenance, the alarm output can be temporarily shielded without affecting the normal operation of the rest of the system, ensuring the continuous operation of the entire monitoring system.

The module is equipped with customized multi-channel signal output configuration, which can meet the needs of multiple system connections and is compatible with different types of control and interlock equipment access. It has a complete fault self-diagnosis circuit that can detect sensor breakage, line short circuit, abnormal input signals, and hardware faults of the module itself. When an abnormality occurs, the operating status indicator light goes out, and it promptly reminds the maintenance personnel to carry out fault troubleshooting. The equipment is equipped with a sensor signal buffer output interface, which can be externally connected to oscilloscopes, data acquisition instruments, etc. for on-site signal verification, equipment debugging, and in-depth fault analysis. This model has industry-specific compliance certification and no built-in safety barrier. It is designed to be combined with a dedicated monitoring module that meets compliance standards.

IV. Core Performance Parameters

The input signal of the equipment is the gap voltage output by the eddy current preamplifier. The reference voltage is -24V DC. The two input channels adopt high input impedance design to effectively avoid attenuation during signal transmission. The frequency response is divided into two working modes. The high-frequency mode has a frequency range of 4Hz to 4000Hz, suitable for various high-speed rotating mechanical equipment; the low-frequency mode has a frequency range of 1Hz to 600Hz, suitable for low-speed units. The low-frequency mode is not recommended for equipment with an acceleration rate exceeding 1000rpm/s, to avoid data distortion.

The full-scale range of vibration measurement for this model is 0 to 125 micrometers peak-to-peak, with a measurement accuracy of ±1% of the full scale. The measurement range of gap voltage is -2V to -22V DC, with a voltage measurement accuracy of ±0.1V. The display resolution of the equipment panel is 0.1 micrometers and 0.1V DC, with clear and precise readings. The power supply can be selected as -18V DC or -24V DC. The module has an independent current-limiting protection circuit, and the maximum power consumption of the entire device does not exceed 5W. The power supply voltage fluctuates within the range of ±10% of the rated value, and the equipment can maintain stable operation.

The alarm system is divided into two levels: warning and danger. Each channel is independently configured. The rated parameters of the relay contacts are 24V DC and 1A, supporting open and closed mode switching. The alarm delay time can be programmed within the range of 0 to 10 seconds, effectively filtering instantaneous interference signals and reducing the probability of false alarms. This model adopts 03 customized output configuration, integrating multiple signal output interfaces, with stable signal transmission, and can be adapted to multiple sets of automation systems for simultaneous data collection.

Environmental adaptability performance: The normal operating temperature range of the equipment is -40℃ to +70℃, the storage temperature range is -52℃ to +105℃, the applicable relative humidity is 5% to 95%, and the operating environment requires no condensation. The front of the equipment is equipped with an LED digital display screen, which can freely switch to view the vibration values and gap voltages of the two channels. It is also equipped with independent status indicator lights such as operation, bypass, warning, and danger. It integrates RS-485 communication interface, which can be connected to the system host to complete remote parameter configuration, real-time data reading, and alarm status monitoring.

V. Model Code Explanation

3300 is the code for the entire monitoring product series of the Leebert 3300. 16 represents the XY/GAP dual-channel vibration and shaft gap monitor. 02 represents the full-scale range of vibration measurement is 0 to 125 micrometers peak-to-peak, 02 represents the dedicated sensor input circuit and matching specifications, 03 represents customized multi-channel signal output configuration, 01 represents having industry-specific usage certification. The first 00 represents no built-in safety barrier, the last 00 is the standard basic hardware version, without additional additional customization functions.

VI. Applicable Equipment Domains

The power industry is mainly applied to steam turbine generator sets, boiler induced draft fans, supply fans, large circulating water pumps, etc. of power station core auxiliary equipment. The petrochemical industry is suitable for centrifugal compressors, screw compressors, high-temperature process pumps, refining and chemical complete sets of equipment, etc. of continuous operation key rotating equipment. The metallurgical industry can be used for high-temperature blast fans, rolling mill units, dust removal fans, etc. of equipment for online status monitoring. It is also applicable to large-scale circulating pumps in water supply systems and various precision medium-high-speed rotating machinery in industrial and mining enterprises. With its characteristics of small measurement range, high precision, customized output, and compliance certification, it can meet the requirements of high-precision monitoring and multi-system integration scenarios, providing reliable support for equipment condition assessment, early fault warning, and safety interlock shutdown.

VII. Installation and Maintenance Key Points

The equipment is installed in a 19-inch standard rack. During assembly, sufficient spacing is reserved between modules to ensure ventilation and heat dissipation, and to prevent accumulated temperature from affecting the operating performance of the equipment. During wiring operations, strictly distinguish between A and B signal channels, positive and negative power poles, various output terminals, and communication terminals, and connect according to the marking specifications to avoid incorrect connections, reverse connections, which may cause equipment damage or abnormal monitoring data. It is recommended to complete the channel accuracy calibration using the original factory standard probes and calibration tools every six months. This model is a low-range high-precision version. The calibration process must be operated in accordance with the original factory procedures. After calibration, lock the parameters to prevent unauthorized personnel from modifying the settings at will.

During daily operation and maintenance, keep the equipment panel and internal cabinet clean, prevent dust and oil from invading the modules, and regularly check all wiring terminals. Timely tighten loose lines to avoid signal jumps and data deviations caused by poor contact. When the equipment triggers fault prompts or abnormal alarms, follow the sequence of first checking the sensors, connection lines, and then detecting the monitoring module body to gradually locate the problem. When using the low-frequency working mode, do not apply it to fast-start and stop units to prevent distortion of monitoring data. All signal lines and communication lines should be as far away as possible from strong power cables to reduce the impact of electromagnetic interference on signal transmission. This model has special industry certification and customized output circuits. During use, it is strictly prohibited to disassemble, modify the hardware structure privately, to ensure the equipment operates in compliance and maintains stable performance.