ProductPRODUCT
Featured products
Contact Us
- Bently Nevada
- 3500/42 140734-02+138708-01
- Proximitor/Seismic Monitor
- USA
- 165 × 133 × 85 mm
- 1.3kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 33
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| sales@plc-automations.com | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Product Overview & Description
The 3500/42M 140734‑02 + 138708‑01 is a two-piece module designed for rack-mounted systems that protect and monitor rotating machinery. The 140734‑02 front card handles signal conditioning from proximity, seismic, and velocity transducers, providing metrics such as radial vibration, axial (thrust) displacement, differential expansion, eccentricity, acceleration, velocity, shaft absolute position, REBAM diagnostics, and circular acceptance region. The 138708‑01 rear card offers internal termination with shaft-position output capability, delivering a dedicated absolute shaft-position signal with precision and programmability. Together, they provide a powerful, rack-integrated solution that is hot‑swappable and engineered for demanding industrial settings.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 3500/42M 140734‑02 + 138708‑01 |
| Brand | (omitted) |
| Series | 3500 Machinery Protection – Proximitor/Seismic Monitor |
| Type | Four‑channel proximitor/seismic monitor with internal shaft‑position I/O |
| Dimensions (mm) | Front card: ≈ 165 × 133 × 85 mm; Rear card: standard rack‑mount depth (≈ 160 mm) |
| Weight (kg) | Front: ≈ 1.0 kg; Rear: ≈ 0.3 kg |
| Input Channels | Four independent differential inputs (~10 kΩ) supporting proximity, velocity, and acceleration sensors |
| Measured Parameters | Vibration, displacement, expansion, eccentricity, acceleration, velocity, shaft position, REBAM diagnostics |
| Power Consumption | Approximately 7.5 W (powered by 24 V DC rack) |
| Outputs | Buffered analog outputs, dual 4–20 mA recorder loops, discrete shaft‑position output, optional alarm relays |
| Sensitivity | Displacement: ~3.94 mV/µm or ~7.87 mV/µm; Velocity: ~20 mV/(mm/s); Acceleration: ~10 mV/(m/s²) |
| LED Indicators | Operational status, TX/RX, bypass, and channel fault indicators |
| Operating Range | –40 °C to +85 °C typical industrial rating |
| Certifications | Complies with rugged vibration-monitoring standards (e.g., API 670) |
| Mounting | Rack‑mount, hot‑swappable front and rear modules |
Applications
This module is essential for real-time protection and diagnostics of key rotating machinery assets—such as turbines, compressors, pumps, and generators. It combines broad sensing capability—vibration, displacement, acceleration, velocity, and shaft positioning—into one compact, reliable package. The internal position output enhances shaft position tracking, useful in alignment tasks or precise rotor control. Hot-swappability allows live maintenance; internal wiring keeps installation tidy and dependable. Integration into DCS, condition-monitoring, or predictive-maintenance systems is straightforward via analog outputs and programmable relay interfaces.
Advantages
-
All-in-one sensing: Encompasses vibration, displacement, velocity, acceleration, and shaft-position diagnostics in one module.
-
Accurate and clear outputs: Clean analog outputs with low noise; added ability to track shaft position precisely.
-
Live maintenance: Hot-swappable front and rear insertion/removal—minimal disruption to monitoring.
-
Compact and neat installation: Internal termination keeps wiring organized and accessible.
-
Versatile connectivity: Mix of buffered, 4–20 mA, and discrete position outputs facilitates integration with varied control systems.
-
Rugged reliability: Built to survive high-temperature, high-vibration environments commonly found in industrial settings.
Related Models (Same Series or Related)
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/42M + 128229‑01 | Same type with standard proximity/seismic termination rear module | Similar front + ~160 mm rear | ~1.0 + ~0.2 |
| 3500/42M + 128240‑01 | Module with external I/O termination | Similar | Comparable |
| 3500/40M 140734‑01 | Proximity-only front card without shaft-position output | Similar front only | ~1.0 |
| 3500/42M + 135489‑01 | With safety barrier I/O and internal wiring support | Similar | Similar |
| 3500/40M 140471‑01 | Proximity/velocity I/O with standard termination | Standard | ~0.3 |
Popular Models (Same Brand)
| Model | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/22M | Transient data interface (waveform capture) | Standard front size | ~0.9 |
| 3500/32M | Alarm relay module (4-channel) | Standard front size | ~0.9 |
| 3500/33 | Temperature monitoring (RTD/Thermocouple) | Standard front size | ~0.9 |
| 3500/50M | Speed (tachometer) detection module | Standard front size | ~0.9 |
| 3500/60 | Multifunction temperature variant | Standard front size | ~0.9 |
FAQ (10 Q&A)
-
Q: What does the front card (140734‑02) do?
A: It processes signals from proximity, velocity, and acceleration sensors to derive multiple diagnostic outputs, including shaft-position analysis. -
Q: What is the role of the rear card (138708‑01)?
A: It provides internal connection for field wiring and delivers precise absolute shaft-position output. -
Q: How many channels are supported?
A: Four independent channels, each capable of measuring displacement, vibration, velocity, or acceleration. -
Q: What’s the temperature tolerance?
A: Built to operate from –40 °C up to +85 °C, suitable for harsh environments. -
Q: What power does it draw?
A: Approximately 7.5 W from the standard rack 24 V DC bus. -
Q: What outputs are available?
A: Buffered analog outputs, two 4‑20 mA recorder loops, and shaft-position discrete output. -
Q: Can it handle maintenance without shutdown?
A: Yes—both cards are hot-swappable while keeping the rack operational. -
Q: What are the physical dimensions and weight?
A: Front card: ~165 × 133 × 85 mm, ~1.0 kg; Rear card: standard rack depth (~160 mm), ~0.3 kg. -
Q: What’s the displacement signal sensitivity?
A: Typical sensitivity is ~3.94 mV/µm or ~7.87 mV/µm; other domains like velocity or acceleration have their respective scales. -
Q: How does the module assist in system integration?
A: With mix of analog, milliamps, and discrete positional outputs, it integrates smoothly into DCS, PLC, or condition-monitoring platforms.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.