Product details
Product Overview
- Brand: Bently Nevada
- Model: 3500/42-09-05
- Series: 3500/42M
- Type: Proximitor Seismic Monitor
- Made in U.S.A
The 3500/42 monitor protects critical rotating machines.
It accepts proximity, velocity, and acceleration signals. It supports up to four transducer inputs.
This model provides stable vibration protection.
It supports hazardous area approval.
It fits demanding turbine and compressor systems.
Configuration Breakdown
- 3500/42-AA-BB
- AA – I/O Module Type
- 09
- Prox/Velom I/O Module
- Internal terminations
- 09
- BB – Hazardous Area Approval
- 05
- ATEX approved
- IECEx certified
- CSA Class 1 Zone 2
- 05
- AA – I/O Module Type
Key Technical Data
- Input Channels: 1 to 4
- Input Types: Proximity, Velocity, Acceleration
- Power Consumption: 7.7 W typical
- Input Impedance: 10 kΩ
- Transducer Supply: -24 Vdc
- Recorder Output: 4 to 20 mA
- Output Load: 0 to 600 Ω
- Buffered Output Impedance: 550 Ω
- Resolution: 0.3662 µA per bit
- Update Rate: ≤100 ms
- Operating Accuracy: ±0.33% typical
- Maximum Error: ±1%
Signal Performance Summary
- Radial Vibration Sensitivity: 3.94 or 7.87 mV/μm
- Acceleration Sensitivity: 10 mV per m/s²
- Velocity Sensitivity: Up to 20 mV per mm/s
- Frequency Range RMS: 10 to 5500 Hz
- Vector Filters: 1X and 2X supported
- High-pass Filter: 4-pole design
- Low-pass Filter: 2 or 4-pole design
Mechanical Data
- Dimensions: 241.3 x 24.4 x 241.8 mm
- Weight: 0.91 kg
- One full-height rack slot required
Status Indication
- OK LED shows normal operation
- TX/RX LED shows rack communication
- Bypass LED shows bypass mode
- Short circuit protection on outputs
Application Areas
- Steam turbines
- Gas turbines
- Compressors
- Large pumps
- Power generation systems
Professional FAQ
- How many sensors can this monitor handle?
It supports up to four channels.
Each channel works independently.
- Can it work in hazardous zones?
Yes.
Option 05 supports ATEX and IECEx Zone 2.
- What should I check before ordering?
Confirm sensor type.
Check rack slot space.
Verify hazardous approval needs.
- How long is the warranty?
We provide 12 months warranty.
The unit is new and factory tested.
- How do you ship internationally?
We ship by FedEx, UPS, or DHL.
We use strong export packing.
Tracking is provided.
Contact Information
Email: sales@powergearx.com
WhatsApp: +86 18030005825
Original Source:
https://www.powergearx.com/
Partner:
PLCDCS HUB Limited
Copyright © 2026 Powergear X Automation Limited. All rights reserved.















Brian Thompson –
We needed a replacement seismic monitor urgently for a compressor train, and this unit exceeded expectations. It arrived brand new, well protected, and ready for immediate installation. Once online, it provided stable and accurate vibration readings without recalibration. The fast shipping helped us avoid extended downtime, which is critical in our operation. Communication from the seller was clear and professional throughout the process. This module is now fully integrated into our monitoring system and performing exactly as required. Would definitely purchase again.