bently 3500/42M 138708-01 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 3500 Series rack system. It accepts inputs from proximity probes, velocity transducers, or accelerometers, and provides conditioned signals used to measure radial vibration, thrust position, differential expansion, eccentricity, acceleration, velocity, and shaft absolute motion.
This module continuously compares the measured parameters with pre-configured alert and danger setpoints. If the measured values exceed these thresholds, it generates alarm or trip outputs to protect critical rotating machinery such as turbines, compressors, and pumps. The 3500/42M offers high accuracy, wide frequency response, and superior stability, making it one of the most trusted modules for vibration and position monitoring in industrial applications.
Each pair of channels can be configured independently, allowing a single module to perform multiple monitoring functions simultaneously.
Key Features
-
Four independent input channels for Proximitor or Seismic transducers.
-
Each channel pair can be configured for different measurement types.
-
Real-time signal conditioning, filtering, and alarm comparison.
-
High-resolution measurement for both protection and predictive maintenance.
-
Modular design for easy installation in 3500 Series racks.
-
Full compatibility with Bently Nevada 3300 and 7200 proximity probe systems.
-
Designed for harsh industrial environments with wide temperature tolerance.
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Model Number | 3500/42M (138708-01) | Four-channel Proximitor / Seismic Monitor |
| Channels | 4 channels (configured in two pairs) | Each pair operates independently |
| Input Types | Proximity probes, seismic velocity transducers, accelerometers | Compatible with Bently Nevada sensors |
| Input Impedance | 10 kΩ typical | Ensures precise signal measurement |
| Sensitivity | 3.94 mV/µm (100 mV/mil) or 7.87 mV/µm (200 mV/mil) | Adjustable per sensor configuration |
| Frequency Response | Direct filter: 4 Hz to 4 kHz; Low frequency: 1 Hz to 600 Hz; Gap filter: 0.09 Hz (−3 dB) | Wide dynamic range for various monitoring applications |
| Power Consumption | 7.7 W typical | Efficient power draw within 3500 system limits |
| Alarm Setpoints | User-configurable Alert and Danger thresholds | Local alarm logic per channel pair |
| Output Signals | 4–20 mA proportional outputs and relay outputs | For external indication or trip circuits |
| Communication Interface | Via 3500 rack backplane | Integrates with system software and configuration tools |
| Operating Temperature | −30 °C to +65 °C | Industrial-grade temperature range |
| Storage Temperature | −40 °C to +85 °C | Long-term component stability |
| Humidity | 95% non-condensing | Suitable for industrial cabinet environments |
| Rack Slot Requirement | 1 full-height front slot + 1 full-height rear slot | Standard 3500 Series architecture |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 163.1 mm (9.50 in × 0.96 in × 6.42 in) | Compact modular form |
| Weight | Approx. 0.46 kg (1.01 lb) | Lightweight and durable |
| Material | Aluminum alloy enclosure | Industrial-grade mechanical housing |
| Mounting Type | Plug-in rack module | Tool-free replacement and maintenance |
| Country of Origin | United States (Minden, Nevada) | Manufactured by Bently Nevada, Baker Hughes |
| Compliance | CE, CSA, ATEX (depending on version) | Meets global industrial safety standards |
bently 3500/42M 138708-01 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.









