Bentley 3300/16-04-01-01-00-00-00 Product Description

I. Product Introduction

The Bentley 3300/16-04-01-01-00-00-00 belongs to the 3300 series of Benkel Nevada, and is a dual-channel XY/GAP vibration and shaft clearance monitoring module. This device is mainly developed for large industrial rotating machinery and can simultaneously complete the real-time monitoring of two paths of vibration and shaft position clearance. It can accurately capture typical fault hazards such as abnormal vibration during equipment operation, bearing clearance deviation, misalignment of the shaft system, and rotor imbalance, providing monitoring and protection for the safe operation of the unit. It is widely used in key power equipment in fields such as power, petrochemical, and metallurgy, and can be independently connected to the cabinet system or used in conjunction with the entire 3300 monitoring system.

II. Basic Information

The manufacturer is Benkel Nevada, belonging to the 3300 standard monitoring series. The product model is 3300/16-04-01-01-00-00-00. The equipment type is a dual-channel radial vibration and shaft clearance integrated monitor. The core purpose is to conduct dual-channel vibration measurement, shaft clearance monitoring, over-limit alarm, and interlock protection. The equipment is compatible with 3300 XL 8mm, 7200 series eddy current probes and preamplifier systems. The standard probe sensitivity is 200mV/mil. It is installed in an industrial standard 19-inch rack-mounted embedded system, compatible with the system cabinet of the same series. The overall structure is compact, with excellent electromagnetic compatibility, complying with CE-related standards, and capable of stable operation in complex industrial electromagnetic environments.

III. Functions and Positioning

The device is equipped with two completely independent measurement channels, which can separately monitor the radial vibration in the X and Y directions of the same unit, or monitor the parameters of two independent devices. The signals between channels do not interfere with each other, and the data calculation and alarm output are independent. In addition to vibration amplitude detection, the module continuously collects the gap voltage between the shaft and the bearing, converts it into the average position of the shaft, achieving dual monitoring of vibration and shaft system position, and comprehensively judging the operating status of the bearing and rotor.

The module is equipped with an early warning and danger-level alarm mechanism. The alarm threshold of each channel can be independently set through the local panel or upper-level software. When the alarm is triggered, the corresponding indicator light on the panel lights up, and the relay is driven to output a signal, which can be externally connected to an audible and visual alarm device or the unit interlock shutdown system. It has a 4-20mA analog output function, which can transmit the monitoring data to PLC, DCS, etc., for remote centralized monitoring.

The device has a channel bypass function. During equipment maintenance, sensor calibration, or line maintenance, it can temporarily shield a single channel or all channels of the alarm, without affecting the normal operation of other functions. It is equipped with a complete self-diagnosis unit, which can real-time detect sensor breakage, line short circuit, signal instability, and hardware faults of the module. In abnormal conditions, the operation indicator light goes out, quickly alerting maintenance personnel to carry out troubleshooting. At the same time, a sensor signal buffer output interface is reserved, which can be externally connected to a detection instrument for on-site signal verification, fault traceability, and equipment debugging.

IV. Core Performance Parameters

The input signal adopts the gap voltage signal output by the eddy current preamplifier, with a reference voltage of -24V DC. There are two independent input channels. The input impedance has been optimized to effectively avoid attenuation during signal transmission. The frequency response of the equipment is divided into two modes. The high-frequency mode covers 4 Hz to 4000 Hz, suitable for various high-speed rotating equipment; the low-frequency mode ranges from 1 Hz to 600 Hz, suitable for low-speed units. The low-frequency mode is not recommended for equipment with an acceleration rate exceeding 1000 revolutions per minute per second. The vibration measurement range is from 0 to 600 micrometers peak-to-peak, with a measurement accuracy of ±1% of the full scale. The gap voltage measurement range is from -2 volts to -22 volts DC, and the voltage measurement accuracy is ±0.1 volts. The display resolution of the panel is 0.1 micrometers and 0.1 volts DC. The readings are clear and intuitive.

The power supply supports two modes: -18 volts DC and -24 volts DC. The module is equipped with an independent current-limiting protection circuit. The maximum power consumption of the entire machine does not exceed 5 watts. The power supply voltage fluctuates within 10% of the rated value. The equipment can operate normally under these conditions.

The alarm system is divided into two types: warning and danger. Each channel is independently configured. It is equipped with a sealed relay. The contact specification is 24 volts DC, 1 ampere. The contact form supports on-off switching. The alarm delay time can be programmed within 0 to 10 seconds, effectively avoiding false alarms caused by instantaneous signal interference. The analog output is a standard 4 to 20 milliampere DC signal, corresponding to the full range of vibration values.

In terms of environmental adaptability, the normal working temperature range is from -40 degrees Celsius to +70 degrees Celsius. The storage temperature range is from -52 degrees Celsius to +105 degrees Celsius. The relative humidity of the working environment is controlled within 5% to 95%. The equipment can operate stably without condensation inside the environment.

The front panel of the equipment is equipped with an LED digital display tube. It can freely switch to view the vibration values and gap voltages of two channels. It is equipped with status indicators such as operation, bypass, warning, and danger. The status of each channel is independently indicated. An RS-485 communication interface is integrated, which can be connected to the upper computer of the system to complete remote parameter configuration, data reading, and alarm status monitoring.

VII. Model Code Explanation

3300 represents the Benitez 3300 overall monitoring series. 16 represents the XY/GAP dual-channel vibration and shaft gap monitor. 04 represents that the full-scale vibration range is from 0 to 600 micrometers peak-to-peak. 01 represents that it is compatible with the standard 3300/7200 probe system. The standard sensitivity is 200 mV/mil. The second 01 represents the standard configuration of dual-channel warning and danger relay outputs. The first 00 represents no additional industry-specific certification. The second 00 represents no built-in safety barrier. The last 00 represents no additional custom functions. It is the standard basic version.

VI. Applicable Equipment Fields

The power industry can be applied to steam turbine generator sets, various fans, large water pumps, etc. as the main auxiliary equipment. The petrochemical industry is suitable for centrifugal compressors, screw compressors, process pumps, refining and chemical units, etc. as the key continuous operation equipment. The metallurgical field is used for blast furnace blowers, rolling mill units, dust removal fans, etc. The equipment can also be applied to large-scale water circulation pumps, various high-speed rotating machinery in industrial and mining enterprises, providing support for equipment condition monitoring, fault warning, and safety interlock.

VII. Installation and Maintenance Key Points

During installation, use the standard frame fixation method. Reserve sufficient spacing between modules to ensure heat dissipation. Wiring operations need to strictly distinguish channel numbers, positive and negative poles of the power supply, analog output, and communication terminals to prevent wiring errors from causing faults. It is recommended to complete channel accuracy calibration with the original probe and calibration tools every six months. After calibration, lock the parameters to avoid accidental modifications by humans.

During daily maintenance, keep the equipment panel and internal cabinet clean to prevent dust and oil from invading the module interior. Regularly check the tightening status of the wiring terminals to avoid loose lines and poor contact. When the equipment has an abnormal alarm or fault prompt, follow the sequence of first checking the sensor, connection lines, and then detecting the monitoring module to gradually troubleshoot. In low-frequency operation mode, it is strictly prohibited from being used for rapid start-stop of the unit to prevent distorted monitoring data. The analog output circuit should be kept as far away as possible from the strong electrical cables to reduce the impact of electromagnetic interference on the signals.