Products Description
| Company Information | |||
| [email protected] | |||
| Mobile | +8613666033393 | ||
| +8613666033393 | |||
| 13666033393 | |||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China |
Product Description
The Bently Nevada 3500/42M-07-00 138708-01 is a specialized Shaft Absolute I/O Module for the 3500/42M Proximitor Seismic Monitor system. This unit is engineered to deliver real-time machinery protection and condition monitoring by measuring shaft vibration and position with high accuracy. The I/O module interfaces with both proximity and seismic transducers, processing critical vibration data to provide output used for alarms, shutdowns, and system diagnostics.
Designed with internal terminations, the 138708-01 module is ideal for high-integrity applications where machinery health and early fault detection are critical. It supports both Proximitor and Velomitor sensors, enabling broad compatibility across various asset types, including turbines, compressors, pumps, and motors.
This module plays a key role in detecting shaft motion relative to machine housing (absolute shaft vibration) and can integrate with buffered outputs for advanced diagnostics.
Product Specifications
| Parameter | Value |
|---|---|
| Model Number | 3500/42M-07-00 |
| Part Number | 138708-01 |
| I/O Termination | Internal Terminations |
| Supported Transducer Types | Proximitor, Velomitor, Seismoprobe |
| Channels Supported | 4 channels (in 2 pairs) |
| Output Type | Shaft Absolute – Vibration / Velocity |
| Buffered Output | 1 output per channel group, short-circuit protected |
| Buffered Output Impedance | 300 Ω |
| Power Supply to Transducers | -24 Vdc |
| Power Consumption | 7.7 W (monitor) |
| Output Compliance Voltage | 0–12 Vdc across 0–600 Ω load |
| Recorder Output | 4–20 mA (independent per channel) |
| Operating Temperature | -30°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 95% non-condensing |
| Dimensions (I/O Module) | 241.3 x 24.4 x 99.1 mm |
| Weight (I/O Module) | 0.20 kg |
| Certifications | CE, FCC, RoHS, ABS, DNV GL, ATEX, IECEx, CSA, cNRTLus |
| Firmware Required | 3500/42M Module Firmware rev B |
| Software Required | 3500/01 v2.61, DM2000 v3.10 |
Product Features
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Monitors shaft absolute vibration (combination of shaft and housing motion).
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Buffered output for transducer diagnostics.
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LED indicators for module status, TX/RX, and bypass.
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Internal termination reduces wiring complexity.
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Works in combination with 3500 Rack Configuration Software.
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Short-circuit protection on all outputs.
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Programmable frequency filters and static values.
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Suitable for both standard and hazardous area installations.
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Offers recorder output (4–20 mA) for integration with external systems.
Product Advantages
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High measurement accuracy (±0.33% typical).
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User-programmable filters enable flexible deployment across different machines.
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Modular design allows seamless integration into Bently Nevada’s 3500 system.
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Ensures early fault detection and machinery protection.
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Built-in compliance for global standards in safety and electromagnetic compatibility.
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Adaptable for offshore and marine environments.
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Wide operating temperature range suitable for harsh industrial settings.
Product Applications
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Turbomachinery Monitoring (Turbines, Compressors)
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High-Speed Rotating Equipment
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Hydro and Steam Turbines
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Critical Pumps and Blowers
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Petrochemical and Refining Equipment
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Power Generation Systems
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Marine Propulsion Equipment
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Oil & Gas Offshore Platforms
Latest Product Report Title
“Enhanced Vibration Analytics: Bently Nevada 3500/42M-07-00 Delivers Precision Shaft Absolute Monitoring in Offshore Turbomachinery”
Related Models from the Same Series
| Model Number | Description | Termination Type | Supported Inputs | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 128229-01 | Prox/Seismic I/O Module | Internal | Prox/Accel, Velomitor | 241.3 x 24.4 x 99.1 | 0.20 |
| 128240-01 | Prox/Seismic I/O Module | External | Prox/Accel, Velomitor | 241.3 x 24.4 x 99.1 | 0.20 |
| 138700-01 | Shaft Absolute I/O Module | External | Prox & Velomitor/Seismoprobe | 241.3 x 24.4 x 99.1 | 0.20 |
| 135489-01 | Internal Barrier I/O Module | Internal | 4x Prox/Accel | 241.3 x 24.4 x 99.1 | 0.20 |
| 135489-02 | Internal Barrier I/O Module | Internal | 2x Prox/Accel, 2x Velomitor | 241.3 x 24.4 x 99.1 | 0.20 |
| 140471-01 | Prox/Velom I/O Module | Internal | Prox/Accel, Velomitor | 241.3 x 24.4 x 99.1 | 0.20 |
Popular Bently Nevada Models
| Model Number | Description | Application | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| 3500/22M | Transient Data Interface Module | Condition Monitoring | 241.3 x 24.4 x 99.1 | 0.20 |
| 3500/25 | Keyphasor Module | Speed & Phase Measurement | 241.3 x 24.4 x 99.1 | 0.20 |
| 3500/32M | 4-Channel Relay Module | Relay Output | 241.3 x 24.4 x 99.1 | 0.20 |
| 3500/15 | Power Supply Module | Rack Power Supply | 241.3 x 24.4 x 99.1 | 0.80 |
| 3500/05 | System Rack | Module Enclosure | 266.7 x 482.6 x 254 | 4.5 |
| 3500/93 | Display Interface Module | HMI/Display | 241.3 x 24.4 x 99.1 | 0.25 |
FAQ
Frequently Asked Questions (FAQ)
Q1: What does the 138708-01 Shaft Absolute I/O Module monitor?
A1: It measures shaft absolute vibration by combining shaft relative motion with machine case vibration to assess true shaft movement.
Q2: Which types of sensors are compatible with this module?
A2: It supports Proximitor, Velomitor, and Seismoprobe sensors.
Q3: How is the output from the module provided?
A3: Outputs include 4–20 mA recorder outputs and buffered outputs for diagnostics, both protected from short circuits.
Q4: What are the physical dimensions and weight of the I/O module?
A4: The dimensions are 241.3 x 24.4 x 99.1 mm and the weight is 0.20 kg.
Q5: Is the 138708-01 suitable for hazardous locations?
A5: Yes, it is certified for use in Class I, Division 2, and Zone 2 hazardous areas under CSA, ATEX, IECEx, and cNRTLus standards.
Q6: Can this module be configured for multiple types of monitoring simultaneously?
A6: Yes, it can monitor shaft absolute vibration or velocity and be paired with other module types in the same rack.
Q7: What kind of software is required to configure the module?
A7: The configuration requires 3500/01 software version 2.61 or later and DM2000 version 3.10.
Q8: Is the buffered output affected by recorder output faults?
A8: No, short circuits on recorder outputs do not impact monitor operation.
Tags
Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
