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Technical Specifications and Hardware Overview
The Bently Nevada 3500/42M-SIL2-09-01 operates as a Proximitor seismic monitor for the 3500 series machinery protection system. This module measures 241 mm in height, 50 mm in width, and 210 mm in depth for standard rack mounting. It weighs approximately 1.3 kilograms, which ensures stable mechanical integration within the chassis. The unit draws 0.6 A from a 24 V DC supply, consuming roughly 14.4 W under full operational load. It provides 4 independent monitor channels for vibration measurement applications. Each channel accepts inputs from proximity probes and seismic accelerometers.
The module supports a frequency range from 0.5 Hz to 10 kHz for comprehensive vibration analysis. It offers a 0 to 100 µm displacement range for proximity probe measurements. The unit provides a 0 to 10 g acceleration range for seismic transducer inputs. It delivers 24-bit resolution for high-precision signal conversion across all channels. The module includes two 4–20 mA analog outputs for external recording and monitoring. It incorporates SIL2 functional safety certification for critical protection systems. The unit features front-panel LEDs for channel status and fault indication. The operating temperature range spans -20°C to 65°C for harsh environments. Storage temperatures extend from -40°C to 85°C without causing damage. Humidity tolerance covers 5% to 95% non-condensing conditions.
| Parameter | Specification |
|---|---|
| Brand | Bently Nevada |
| Model | 3500/42M-SIL2-09-01 |
| Category | Proximitor Seismic Monitor |
| Dimensions (H×W×D) | 241 × 50 × 210 mm |
| Weight | 1.3 kg |
| Power Supply | 24 V DC, 0.6 A (14.4 W) |
| Monitor Channels | 4 independent |
| Input Types | Proximity probe, seismic accelerometer |
| Frequency Range | 0.5 Hz to 10 kHz |
| Displacement Range | 0–100 µm |
| Acceleration Range | 0–10 g |
| Resolution | 24-bit |
| Analog Outputs | 2 × 4–20 mA |
| Safety Rating | SIL2 certified |
| Filter Options | Low-pass, high-pass, band-pass |
| Operating Temp | -20°C to 65°C |
| Storage Temp | -40°C to 85°C |
| Humidity | 5–95% RH (non-condensing) |
| Certifications | SIL2, CE, ATEX |
Measurement and Signal Processing Features
This monitor channels process signals from proximity probes for radial vibration measurements. It also accepts inputs from seismic accelerometers for casing vibration monitoring. The Bently Nevada 3500/42M-SIL2-09-01 covers a frequency range from 0.5 Hz to 10 kHz. It provides 24-bit resolution for exceptional measurement precision and repeatability. The unit applies programmable filters to isolate specific frequency bands of interest. It generates 4–20 mA outputs proportional to vibration amplitudes for external devices. The module integrates SIL2 safety functionality for machinery protection applications.
Installation and System Integration
The 3500/42M-SIL2-09-01 mounts into a 3500 series rack chassis slot. It connects to the backplane via a 48-pin connector for data exchange. The module interfaces with proximity probes using BNC or terminal block connections. It delivers a mean time between failures of 120,000 hours. The unit carries CE and ATEX certifications for global deployment. It passes vibration testing at 10 to 55 Hz with 0.15 mm amplitude. The module withstands shock loads up to 5 g for 30 ms duration.