135137-01 | Bently Nevada | Position I/O Module
The Bently Nevada 135137-01 is a position I/O module with internal terminals that belongs to the 3500 series and is a key component of the 3500/45 monitoring system. It is mainly used for position detection and equipment protection of industrial rotating machinery, and is widely applied in fields such as power generation and oil and gas. The detailed parameters and functional characteristics are as follows:
- Core Functional Features
- Multi - channel signal collection: It is a 4 - channel device that can receive input signals from a variety of sensors, including rotary potentiometers, proximity sensors, AC/DC linear variable differential transformers (LVDTs), and rotary position sensors (RPTs). The channels support paired programming, and can execute up to two functions at the same time. For example, channels 1 and 2 can complete one monitoring function, while channels 3 and 4 can perform the same or another different function.
- Intelligent alarm protection: After processing the collected sensor signals, the module continuously compares them with the preset alarm parameters by the user. Once the monitored parameters exceed the set range, it will trigger an alarm in a timely manner. This helps to prevent potential risks such as equipment overload and overspeed, and provides reliable protection for the safe operation of machinery.
- System compatibility: As an important part of the Bently Nevada 3500 series, it can be seamlessly integrated with the 3500/45 position monitor and other monitoring and diagnostic products of the same series. It can also be adapted to three - module redundant (TMR) applications of the 3500 system, realizing monitoring voting and fault judgment.
- Key Technical Parameters
- Electrical parameters: The input voltage can be 24V DC or 125V DC, and the output voltage is 24V DC. The typical power consumption is 7.7W. For DC LVDT inputs, the input impedance is 1MΩ, and for proximity probes/RPT inputs, it is 10kΩ. The thrust sensitivity can be selected as 3.94mv/μm or 7.87mv/μm, and the differential expansion sensitivity has options of 0.394mv/μm or 0.787mv/μm.
- Measurement accuracy and frequency response: The typical measurement accuracy is ±0.33% of the full scale, and the maximum does not exceed ±1% of the full scale. The frequency response can be as low as 1.2Hz (-3db direct filter), which can meet the requirements of precise position measurement such as axial position and valve position. Its memory capacity is 256kb, which can store monitoring data and configuration parameters.
- Environmental adaptability: There are slight differences in the disclosed working temperature ranges. One version is -10°C to 60°C, and another more stringent industrial - grade standard is -30°C to 65°C. The storage temperature range is -40°C to 85°C, enabling it to operate stably in harsh environments such as high and low temperatures in industrial sites.
- Physical and Interface Characteristics
- Size and weight: The overall dimensions are 241.3mm × 24.4mm × 99.1mm, and the weight is about 0.44kg. The compact modular design makes it easy to install in the control cabinet and convenient for later maintenance.
- Communication and connection: It is equipped with Ethernet and RS - 485 communication interfaces, which can realize data exchange and remote monitoring with other control systems. The internal terminal design is adopted, which is convenient for quick connection with various sensors and reduces the difficulty of on - site wiring.
- Typical Application ScenariosThe module is often used to monitor key parameters such as the bearing position, valve position, and gear meshing degree of equipment. It is widely used in power plants, oil and gas fields, chemical plants, as well as in the papermaking, steel, and cement industries. It is especially suitable for the condition monitoring of key equipment such as steam turbines, compressors, and pumps, providing data support for operation and maintenance personnel to carry out fault diagnosis and status evaluation.
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