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

I. Product Introduction

The Bentley 3300/16-03-01-03 is a dual-channel XY/GAP vibration and shaft clearance monitoring module under the Bentley Nevada brand of Baker Hughes. It is an industrial rotating machinery-specific online monitoring and protection device. This module integrates dual-channel radial vibration monitoring and shaft position clearance monitoring functions, can collect real-time operating data of the unit, accurately identify fault hazards such as rotor imbalance, misalignment of the shaft system, bearing wear, and abnormal clearance, and provide continuous monitoring, over-limit alarm, and safety interlock protection for equipment operation. The product adopts a modular design, is compatible with the 3300 series standard cabinets, has a compact structure, strong anti-interference ability, and is widely used in core rotating units of power, petrochemical, and metallurgical industries. It is a core unit in the state monitoring system of large industrial equipment.

II. Basic Information

The manufacturer of this product is Bentley Nevada, belonging to the 3300 industrial monitoring series. The model is 3300/16-03-01-03, and the equipment type is a dual-channel radial vibration and shaft clearance integrated monitor. The core functions include two-channel vibration amplitude measurement, voltage collection of shaft and bearing clearance, average position calculation of the shaft, hierarchical alarm output, hardware self-diagnosis. The equipment is compatible with 3300 XL, 7200 series eddy current probes and their accompanying preamplifiers. The standard probe sensitivity is 200mV/mil, suitable for mainstream sensing equipment in the field. It is installed in an industrial standard 19-inch rack-mounted system and can be directly assembled into the system cabinet. The product complies with CE electromagnetic compatibility standards and can operate stably in complex industrial environments with dust, vibration, and electromagnetic interference.

III. Functions and Positioning

The module is equipped with two completely isolated independent measurement channels, and 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 unit, or separately monitor two different rotating equipment. The two sets of data are independently calculated and output alarm signals. The equipment synchronously completes the monitoring of both vibration amplitude and shaft clearance parameters, converting shaft average operating position through clearance voltage, comprehensively reflecting the operating condition of the rotor and bearing as a whole, and compensating for the limitations of single vibration monitoring.

The equipment is equipped with a warning and danger two-level alarm mechanism. The alarm threshold and alarm logic of each channel can be freely set through the local panel or the upper-level monitoring software. When the parameters exceed the threshold, the corresponding indicator light on the panel lights up, and at the same time drives the relay to output a switch signal, which can be connected to the on-site sound and light alarm device and the unit interlock system to achieve graded safety protection. The module supports single-channel and dual-channel bypass functions. During sensor calibration, line maintenance, and equipment shutdown and maintenance, the alarm output can be temporarily shielded without affecting the normal operation of the rest of the system.

An all-functional fault self-diagnosis system is built-in, which can real-time detect sensor breakage, line short circuit, abnormal input signals, and hardware faults of the module. When a fault occurs, the operation status indicator light goes out, quickly alerting maintenance personnel for troubleshooting. The module comes with a sensor signal buffer output interface, which can be externally connected to oscilloscopes, data acquisition instruments, etc., for on-site signal calibration, function debugging, and in-depth fault analysis. This model is equipped with customized output configuration to meet the diverse signal connection requirements of the field and is compatible with different control and interlock systems.

IV. Core Performance Parameters

The input signal of the equipment is the clearance voltage output by the eddy current preamplifier, with a reference voltage of -24V DC. The two independent input channels adopt high input impedance design to effectively prevent signal transmission attenuation. The frequency response is divided into two modes. The high-frequency mode ranges from 4Hz to 4000Hz, suitable for various high-speed rotating machinery; Low-frequency mode range is from 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 is from 0 to 250 micrometers peak-to-peak, with a measurement accuracy of ±1% of the full scale. The range of gap voltage measurement is from -2V to -22V DC, with a measurement accuracy of ±0.1V. The display resolution of the panel is 0.1 micrometers and 0.1V DC, and the numerical display is clear and precise. The power supply supports two specifications: -18V DC and -24V DC. The module has an independent current-limiting protection circuit, and the maximum power consumption of the entire machine does not exceed 5W. When the power supply voltage fluctuates within the range of ±10% of the rated value, the equipment can operate normally and stably.

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. It supports switching between open and closed modes. The alarm delay time can be programmed from 0 to 10 seconds, effectively filtering instantaneous interference signals and reducing the probability of false alarms. This model's output configuration is customized for multiple types of signal output, which can match the different control system access requirements of the site.

In terms of environmental adaptability, the working temperature range is -40℃ to +70℃, the storage temperature range is -52℃ to +105℃, and it is applicable to a relative humidity of 5% to 95%. The operating environment requires no condensation. The front of the equipment is equipped with an LED digital display, allowing for one-click switching to view the vibration values and gap voltages of two channels. Integrated independent status indicator lights for operation, bypass, warning, and danger are also included. It is equipped with an RS-485 communication interface, which can be connected to the upper system to achieve remote parameter configuration, real-time data reading, and alarm status monitoring.

VII. Model Code Explanation

3300 is the code for the entire monitoring series of the Bently 3300, 16 represents the XY/GAP dual-channel vibration and shaft gap monitor, 03 represents the full-scale range of vibration measurement from 0 to 250 micrometers peak-to-peak, 01 represents the standard 3300/7200 probe system, with a standard sensitivity of 200mV/mil, 03 is the code for customized output and relay combination configuration, corresponding to dedicated signal output and relay logic specifications. The entire model is a standard customized version of this series, without additional protective or certification configuration.

VIII. Applicable Equipment Domains

In the power industry, it is mainly applied to steam turbine generator sets, large blowers and fans, circulating water pumps, etc., as key auxiliary equipment. In the petrochemical industry, it is suitable for centrifugal compressors, screw compressors, high-temperature process pumps, and complete sets of refining and chemical units, etc., as core rotating equipment that operates continuously. In the metallurgical industry, it can be used for blast fans in blast furnaces, rolling mill units, dust removal fans, etc. It is also applicable to large-scale circulating pumps in water supply and industrial enterprises, and for online monitoring of high-speed rotating machinery in industrial and mining enterprises. It provides reliable guarantees for equipment condition assessment, early fault warning, and safety interlock shutdown.

IX. Installation and Maintenance Key Points

The equipment is installed on a standard frame. During assembly, sufficient space is reserved between the modules to ensure ventilation and heat dissipation. During wiring, strictly distinguish A and B signal channels, positive and negative poles of the power supply, output terminals, and communication lines to prevent incorrect connections and reverse connections. It is recommended to use the original factory tools to complete the channel accuracy calibration every six months. After calibration, lock the parameters to prevent accidental modification by humans.

Daily maintenance requires keeping the cabinet and module panel clean to avoid dust and oil contamination from invading the equipment interior. Regularly check all wiring terminals and promptly tighten loose lines to prevent poor contact from causing abnormal signals. When the equipment has a fault prompt or abnormal alarm, gradually troubleshoot in the order of first checking the sensors, connection lines, then detecting the monitoring module body. When using the low-frequency operation mode, it is strictly prohibited to apply it to rapid-start and rapid-stop units to prevent deviation in monitoring data. The communication and signal lines should be kept as far away as possible from strong electrical cables to reduce the impact of electromagnetic interference on the equipment operation.