Description
Detailed parameter table
| Parameter name | Parameter value |
| Product model | 3500/42M 140734-02 |
| Manufacturer | Bently Nevada |
| Product category | Advanced multi-channel signal conditioner |
| Electrical performance | 24V DC power supply; Power consumption: 15W max |
| Physical size | Width: 48.8mm, Height: 241.3mm, Depth: 242mm |
| Interface type | Backplane connector for 3500 series rack; 16 analog input channels; 16 analog output channels (4-20mA); 10/100Base-T Ethernet |
| Input compatibility | Eddy current sensors (e.g., 87199-01), accelerometers, thermocouples (J, K, T, R, S), 4-20mA transmitters |
| Signal processing | 24-bit ADC resolution; Configurable filters (0.01Hz to 20kHz); Sampling rate: 128kS/s per channel |
| Environmental requirements | Operating temperature: -40°C to +70°C; Humidity: 5% – 95% (non-condensing) |
| Installation method | Rack-mountable in 3500 series racks; Occupies 2 standard slots |
| Compatibility | Works with 3500/50 288062-02, 3500/25 125792-01, 3500/33 module, and 170180-01-00 software |
BENTLY 3500/42M 140734-02
Product introduction
The Bently Nevada 3500/42M 140734-02 is a high-performance multi-channel signal conditioner, engineered as a flagship component of the 3500 series machinery protection system. It serves as a centralized processing hub for diverse sensor inputs, converting raw data from industrial transducers into standardized outputs for monitoring, analysis, and control.
Designed to handle complex monitoring requirements, the 3500/42M 140734-02 processes signals from 16 input channels simultaneously—accommodating everything from eddy current vibration sensors to high-temperature thermocouples. Its advanced signal processing capabilities ensure precise measurement of critical parameters, which are then relayed to operator interfaces like the 3500/50 288062-02 for real-time visualization and to downstream systems for protective actions.
As an upgraded variant of the 3500/42M family, this module integrates seamlessly with the broader 3500 ecosystem, including the 3500/25 125792-01 Keyphasor module for synchronized data capture. Its combination of high channel density, processing power, and rugged design makes the 3500/42M 140734-02 ideal for large-scale industrial applications such as turbine trains, compressor stations, and multi-machine production lines, where comprehensive monitoring is essential for operational efficiency and safety.
Core advantages and technical highlights
High-density multi-sensor processing: With 16 input channels, the 3500/42M 140734-02 consolidates data from diverse sensor types in a single module, eliminating the need for multiple specialized conditioners. It handles eddy current signals from 87199-01 sensors (vibration/displacement), thermocouple readings (temperature), and 4-20mA signals (pressure, flow) simultaneously, providing a unified view of machinery health. This integration reduces system complexity and improves data synchronization across parameters.
Ultra-high resolution processing: Equipped with 24-bit ADC resolution and a 128kS/s sampling rate per channel, the 3500/42M 140734-02 captures even the smallest signal variations—critical for detecting early-stage faults like bearing degradation or rotor imbalance. Its configurable filters (0.01Hz to 20kHz) can be tailored to specific sensor types, ensuring optimal noise reduction without losing critical frequency components. This precision makes it indispensable for diagnostic applications requiring detailed spectral analysis.
Advanced synchronization: The module integrates with the 3500/25 125792-01 Keyphasor module to time-stamp data with rotational phase information, enabling order analysis and precise correlation between vibration patterns and shaft position. This synchronization ensures that data displayed on the 3500/50 288062-02 interface is time-aligned, allowing operators to identify position-specific faults such as a cracked gear tooth or uneven rotor wear.
Ethernet-enabled remote management: The 3500/42M 140734-02’s Ethernet port facilitates direct communication with 170180-01-00 software, enabling remote configuration, real-time data streaming, and firmware updates. This connectivity allows engineers to adjust filter settings or scaling parameters without on-site access, reducing maintenance downtime. It also supports integration with plant-wide SCADA systems, making it a key component in digital transformation initiatives.
Typical application scenarios
In a natural gas processing plant, the 3500/42M 140734-02 monitors a multi-stage compressor train, processing signals from 8 eddy current sensors (vibration), 4 thermocouples (bearing temperature), and 4 pressure transmitters (interstage pressure). Its synchronized data—via the 3500/25 125792-01—reveals correlations between high vibration in the third stage and rising discharge pressure, alerting operators via the 3500/50 288062-02 interface to a potential impeller blockage. This early detection prevents catastrophic failure and allows scheduled maintenance during a planned shutdown.
At a nuclear power plant, the 3500/42M 140734-02 is deployed in the turbine hall, handling 16 channels of safety-critical data: 10 vibration sensors, 4 temperature probes, and 2 speed sensors. Its high-resolution processing captures subtle vibration harmonics indicative of blade wear, while integration with the 3500/50 288062-02 ensures operators have immediate access to alarm data. The Ethernet port streams encrypted data to the plant’s DCS, maintaining compliance with regulatory requirements for continuous monitoring of safety systems.
In a steel mill’s hot rolling operation, the 3500/42M 140734-02 monitors multiple rolling mill stands, processing vibration data from 87199-01 sensors and temperature readings from R-type thermocouples. Its ability to filter out high-frequency noise from the mill’s electrical systems ensures accurate measurement of roll vibration, which is displayed on the 3500/50 288062-02 interface. By correlating vibration spikes with temperature increases, maintenance teams identify roll misalignment early, reducing product defects and extending roll life.
BENTLY 3500/42M 140734-02
Related model recommendations
3500/50 288062-02: Operator interface module that displays real-time data processed by the 3500/42M 140734-02.
3500/25 125792-01: Keyphasor module that synchronizes rotational phase data with the 3500/42M 140734-02’s measurements.
87199-01: Eddy current sensor whose vibration signals are conditioned and analyzed by the 3500/42M 140734-02.
170180-01-00: Software platform used to configure the 3500/42M 140734-02’s filters, scaling, and alarm thresholds.
3500/33: Vibration monitoring module that works with the 3500/42M 140734-02 to analyze processed vibration data.
3500/60: Relay module that receives conditioned signals from the 3500/42M 140734-02 to trigger protective actions.
3500/05: Rack interface module that facilitates communication between the 3500/42M 140734-02 and other 3500 series components.
149992-01: Shielded cable recommended for connecting sensors to the 3500/42M 140734-02 to minimize noise.
Installation, commissioning and maintenance instructions
Installation preparation: Before installing the 3500/42M 140734-02, power off the 3500 series rack and use an anti-static wrist strap. The module occupies 2 consecutive slots; secure it with mounting screws torqued to 0.6 Nm. Plan sensor wiring routes to separate analog inputs from power cables, using shielded twisted-pair cable (e.g., 149992-01) for all connections. Ground shields at the sensor end only to prevent ground loops. Ensure the rack is properly ventilated, as the module dissipates up to 15W of heat.
Maintenance suggestions: Perform quarterly inspections of the 3500/42M 140734-02 to check for loose connections or corrosion on terminal blocks. Clean terminals with a dry cloth if needed. Calibrate annually using 170180-01-00 software and a precision signal generator, verifying accuracy across all input types (thermocouples, vibration sensors, 4-20mA signals). Check Ethernet connectivity monthly by verifying data synchronization with the 3500/50 288062-02. If signal drift or channel failures occur, back up configurations via Ethernet before replacing the module to minimize reconfiguration time.
Service and guarantee commitment
The 3500/42M 140734-02 is backed by a 15-month warranty covering manufacturing defects, including signal processing errors, channel failures, or connectivity issues. During this period, Bently Nevada provides free repair or replacement of defective units, along with technical support for integration with the 3500/50 288062-02 and other 3500 series components.
Our global service team offers 24/7 assistance, with remote diagnostics available via the module’s Ethernet port to minimize downtime. Extended warranty options (up to 5 years) include annual calibration verification, priority technical support, and firmware updates. Built on Bently Nevada’s legacy of excellence in industrial monitoring, the 3500/42M 140734-02 is guaranteed to deliver reliable, high-precision signal conditioning, ensuring critical machinery remains protected and optimized for performance.
