

Product: 3500/45 140072-04
Category: Vibration Sensor / Accelerometer (Presumed, based on common numbering patterns for such industrial sensors)
Overview:
The 3500/45 140072-04 is a module from the Bently Nevada 3500 monitoring system, a widely used series for machinery protection and condition monitoring. This specific module is typically a Seismic Transmitter or Vibration Transmitter. It is designed to continuously measure the absolute (case) vibration of machines in terms of velocity (mm/s or in/s) and convert it into standardized analog output signals (e.g., 4-20 mA). It is commonly used for monitoring rotating equipment like pumps, fans, compressors, and motors in industrial environments.
Key Parameters & Specifications
| Parameter | Specification / Description |
|---|---|
| Function | Single-channel seismic vibration transmitter; measures casing/bearing absolute vibration. |
| Primary Measurand | Vibration Velocity (typically RMS or Peak). |
| Output Signal | Isolated 4-20 mA analog output, proportional to the measured vibration. |
| Dynamic Range | Selectable ranges (e.g., 0-25 mm/s, 0-50 mm/s, or equivalent in in/s). |
| Frequency Response | Typically within 10 Hz to 1,000 Hz (standard for casing vibration monitoring). |
| Power Supply | Commonly 18-30 VDC loop power. |
| Operating Temperature | -40°C to +85°C (-40°F to +185°F) approximate, suitable for harsh environments. |
| Enclosure Rating | Robust metal housing, likely IP67 or NEMA 4X for dust and water resistance. |
| Electrical Connections | Terminal block or conduit entries for power, output, and sensor input. |
| Mounting | Direct stud mounting to the machine casing. |
| Dimensions (Approx.) | Varies, but typical for such transmitters: ~120 mm height x 80 mm diameter (cylinder) or similar compact enclosure. |
| Weight (Approx.) | ~1.5 kg (3.3 lbs), depending on housing material. |
| Compliance | Designed to meet relevant industrial standards (ATEX/IECEx for hazardous areas may apply depending on exact model variant). |
| Sensor Input | Accepts signal from an integrated piezoelectric velocity sensor or a separate seismic sensor. |
Primary Application Scenarios
Rotating Machinery Protection:
Permanent monitoring of casing vibration on critical and auxiliary equipment such as:Pumps (centrifugal, reciprocating)
Electric Motors
Fans and Blowers
Gearboxes
Compressors
Predictive Maintenance Programs:
Provides a continuous 4-20 mA signal to a PLC, DCS, or dedicated monitoring system to trend vibration levels. This helps identify degrading conditions (imbalance, misalignment, bearing wear, resonance) before failure occurs, enabling planned maintenance.Non-Critical Asset Monitoring:
Cost-effective solution for monitoring a large number of less critical machines where full online monitoring systems are not justified. The simple analog output integrates easily into existing control architectures.Industrial Environments:
Its rugged construction and wide operating temperature range make it suitable for:Oil & Gas (pump stations, offshore platforms)
Power Generation (cooling tower fans, boiler feed pumps)
Water & Wastewater Treatment
Mining & Minerals Processing
Chemical & Petrochemical Plants
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Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
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7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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