bently 3500/42M 135489-03 Proximitor / Seismic Monitor
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8615305023276 | |||||||
| +8615305023276 | ||||||||
| 15305023276 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||

Product Overview
The Bently Nevada 3500/42M Proximitor / Seismic Monitor is a four-channel machinery protection and condition monitoring module designed for use in the Bently Nevada 3500 Series system. It measures vibration, position, and velocity signals from proximity probes, velocity transducers, and accelerometers, providing accurate, real-time information for machine protection and diagnostics.
This monitor continuously evaluates vibration and position data against programmed alert and danger limits. If these thresholds are exceeded, the system initiates alarms or protective shutdowns to prevent mechanical damage. The module supports dual-function operation, with each pair of channels configurable for a different measurement type.
The 135489-03 I/O module is a variant equipped with internal barriers, designed for installations requiring intrinsic safety or hazardous-area compliance. It provides termination points for up to four seismic or velocity (Velomitor) sensors.
The 3500/42M is widely used in turbines, compressors, pumps, generators, and other rotating equipment that demand high-reliability condition monitoring and automatic protection.
Key Features
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Four independent measurement channels (configurable in pairs).
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Accepts proximity, velocity, or acceleration sensor inputs.
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Provides radial vibration, axial position, shaft absolute, or velocity measurements.
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Configurable alert and danger setpoints with relay outputs.
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Real-time data for both protection and diagnostic systems.
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I/O module 135489-03 includes internal safety barriers for hazardous zones.
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Compact, rack-mounted design for the 3500 Series frame.
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Designed and manufactured in Minden, Nevada, USA by Bently Nevada (Baker Hughes).
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Model | 3500/42M | Proximitor / Seismic Monitor |
| I/O Module | 135489-03 | Internal barrier type, 4-channel Velomitor input |
| Number of Channels | 4 channels (configured in pairs) | Each pair can be programmed for different measurements |
| Input Types | Proximity probes, velocity sensors, accelerometers | Compatible with Bently Nevada transducers |
| Power Consumption | Approximately 7.7 W | Typical operational load |
| Input Impedance | 10 kΩ nominal | Ensures signal integrity and low noise |
| Measurement Range | Dependent on transducer type | Typically ±2 mm for displacement or ±50 mm/s for velocity |
| Frequency Response | 4 Hz – 4 kHz or 1 Hz – 600 Hz (direct); 0.09 Hz (gap) | Configurable via software |
| Sensitivity | 3.94 mV/µm (100 mV/mil) or 7.87 mV/µm (200 mV/mil) | Depends on probe calibration |
| Alarm Setpoints | Two levels: Alert and Danger | User-configurable thresholds |
| Communication | Via 3500 rack backplane | Data transmitted to the 3500/22M or 3500/20 modules |
| Rack Slots Required | One front slot (monitor) + one rear slot (I/O) | Standard 3500 architecture |
| Operating Temperature | −30 °C to +65 °C | Industrial environment range |
| Storage Temperature | −40 °C to +85 °C | Safe storage range |
| Humidity | 95 % non-condensing | Suitable for harsh industrial conditions |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 163.1 mm (9.50 in × 0.96 in × 6.42 in) | Standard 3500 module size |
| Weight | Approx. 0.46 kg (1.01 lb) | Lightweight aluminum housing |
| Material | Industrial-grade aluminum alloy | Provides durability and EMI protection |
| Mounting | Plug-in rack type | Quick replacement without rewiring |
| Country of Origin | United States of America (USA) | Manufactured in Minden, Nevada |
bently 3500/42M 135489-03 Proximitor / Seismic Monitor is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8615305023276 | |||||||
| +8615305023276 | ||||||||
| 13950166376 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
Xiamen Shengruite Trading Co., Ltd. is a company specializing in the supply of industrial PLC spare parts.
We provide high-quality PLC spare parts to customers in the global manufacturing, energy and power, chemical and other fields.
Since its establishment in 2011, after 13 years of rapid development, the cumulative global shipments have reached 223,650 pieces, with an annual output value of US$50 million.
Successfully served more than 500 customers in more than 100 countries and regions including Saudi Arabia, UAE, the United States, Europe, Africa, and Southeast Asia
Our Mission
Provide customers with the best quality PLC spare parts and the fastest delivery service to ensure that their industrial automation systems are always in the best operating condition.
We provide a 1-year warranty service, and we support returns and exchanges for any issues to ensure your rights and interests are fully protected.
We can provide detailed product images upon request, and our team can arrange warehouse photos for confirmation to ensure you have all the information you need before making a purchase.
Shipping times vary depending on your location. With the support of our 16 global warehouses, we strive to deliver orders as quickly as possible. Contact us to get an estimated delivery time for your specific location.
The minimum order quantity (MOQ) is typically one unit. However, for larger orders, please contact us for potential discounts and pricing details.
Yes, we offer competitive pricing for bulk purchases. Please reach out to our sales team with the specifics of your order to receive a custom quote.
We accept various payment methods for wholesale orders, including bank transfers (T/T), letters of credit, and other options upon agreement. For large transactions, please contact us directly for payment terms.
Yes, we offer flexible ordering options for both small and large quantities. Whether youre looking for a single unit or a large batch, we can accommodate your needs.
We occasionally offer promotional discounts for new wholesale customers. Contact us to learn more about any current offers available for first-time buyers.
If you are unsure of compatibility with your existing setup please provide your system details and our support team can verify compatibility prior to purchase.
Returns are accepted within 30 days if the product is unused, unopened, and in its original packaging. Please note that return shipping and associated costs are the buyer\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s responsibility.
Yes, we offer technical support for the installation and integration of our products. Our team can assist with setup, configuration, and troubleshooting to ensure a smooth installation.









