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- Bently Nevada
- 991-06-50-01-01
- Vibration Transmitter
- USA
- 112 × 38 mm
- 0.45kg
- Xiamen, China
- New & In Stock
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Bently Nevada 991-06-50-01-01
Comprehensive Product Overview, Technical Specifications, Product Applications, Advantages, Series Information, and Recommended Models
Product Overview
The Bently Nevada 991-06-50-01-01 is a compact industrial vibration transmitter designed for continuous monitoring of rotating machinery operating in demanding industrial environments. It is part of the 991 Series, which is developed for permanent installation on machines requiring reliable vibration measurement, simple integration, and long-term operational stability.
The transmitter is designed to measure overall machine casing vibration and convert the vibration signal into a standard 4–20 mA analog current output. This output method allows direct connection with industrial automation systems, including PLC, DCS, SCADA, machinery monitoring platforms, and other process control equipment.
The 991-06-50-01-01 integrates vibration sensing, signal conditioning, and output conversion electronics into a single compact housing. This integrated structure reduces system complexity, minimizes additional hardware requirements, and improves reliability during continuous operation.
The transmitter is mainly installed on rotating equipment such as motors, pumps, compressors, fans, blowers, turbines, and gearboxes. By continuously monitoring vibration levels, it provides important information about machine operating conditions and helps identify potential mechanical problems before serious failures occur.
Compared with periodic vibration inspection methods, continuous online monitoring allows maintenance personnel to understand equipment condition in real time. Changes in vibration trends can indicate developing faults such as bearing degradation, rotor imbalance, shaft misalignment, mechanical looseness, coupling problems, or structural resonance.
The compact mechanical design allows installation in locations where space is limited. The rugged industrial enclosure provides protection against environmental factors including dust, humidity, oil contamination, mechanical vibration, and temperature variation.
The 991-06-50-01-01 is suitable for industries where equipment reliability and production continuity are important. It supports predictive maintenance strategies by providing continuous vibration information that helps reduce unexpected shutdowns, improve maintenance planning, and extend the service life of rotating equipment.
Brand Information
| Item | Description |
|---|---|
| Brand | Bently Nevada |
| Product Category | Industrial Vibration Transmitter |
| Product Type | Permanent Machinery Condition Monitoring Device |
| Series | 991 Series |
| Monitoring Method | Continuous Online Vibration Measurement |
| Output Signal | 4–20 mA Analog Current |
| Installation Method | Direct Machine Mounting |
| Main Function | Machine Housing Vibration Monitoring |
Product Series
The 991 Series is a range of compact industrial vibration transmitters designed for continuous condition monitoring of rotating machinery.
The series is designed to provide a simple and reliable method for measuring machine vibration and transmitting condition information to industrial control systems. By integrating sensing and signal processing functions into one device, the 991 Series reduces installation complexity while maintaining high measurement stability.
The series is commonly selected for applications where traditional vibration monitoring systems may be too complex or expensive. Its compact structure and standard analog output make it suitable for a wide range of industrial equipment.
Main characteristics of the 991 Series include:
- Permanent machine installation
- Continuous vibration monitoring
- Integrated signal conditioning
- Standard 4–20 mA output
- Compact mechanical design
- Industrial-grade environmental protection
- Stable long-term operation
- Low maintenance requirements
- Easy connection with automation systems
Typical monitored equipment includes:
- Centrifugal pumps
- Electric motors
- Compressors
- Industrial fans
- Blowers
- Gearboxes
- Turbines
- Cooling systems
- Process machinery
- Auxiliary rotating equipment
The series is especially suitable for applications where machine availability, operational safety, and predictive maintenance are key requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 991-06-50-01-01 |
| Product Type | Industrial Vibration Transmitter |
| Product Series | 991 Series |
| Measurement Principle | Velocity-Based Housing Vibration Measurement |
| Measurement Method | Continuous Online Monitoring |
| Output Signal | 4–20 mA Analog Current |
| Power Supply | 24 VDC Typical |
| Measurement Direction | Radial |
| Frequency Response | Approximately 10 Hz to 1000 Hz |
| Measurement Range | Industrial Rotating Equipment Vibration Monitoring |
| Accuracy | ±2% Full Scale (Typical) |
| Signal Conditioning | Integrated Electronic Processing |
| Response Time | Fast Dynamic Response |
| Mounting Method | Stud Mount Installation |
| Electrical Connection | Industrial Connector |
| Housing Material | Stainless Steel |
| Protection Rating | IP65 (Typical) |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -55°C to +100°C |
| Electromagnetic Compatibility | Industrial EMC Protection |
| Output Stability | High Stability Analog Output |
| Calibration Stability | Long-Term Stable |
| Maintenance Requirement | Low Maintenance |
| Service Life | Designed for Continuous Operation |
| Dimensions | Approximately 112 × 38 mm |
| Weight (kg) | Approximately 0.45 kg |
Product Features
The 991-06-50-01-01 is designed as a permanently installed vibration monitoring device capable of providing continuous machine condition information during normal operation.
The integrated design combines vibration measurement and signal conversion functions into one compact transmitter. This reduces the number of external components required and simplifies installation compared with traditional vibration monitoring systems.
The transmitter converts vibration signals into a standardized 4–20 mA output signal, allowing easy connection with existing industrial control and monitoring systems.
Its stainless-steel housing provides strong resistance against industrial environmental conditions. The enclosure is designed to withstand mechanical vibration, dust, moisture, oil exposure, and temperature fluctuations.
The compact structure allows flexible installation directly on machine housings, bearing locations, and equipment frames.
The internal electronic circuitry provides stable signal processing and helps reduce interference caused by electrical equipment such as motors, variable frequency drives, generators, and power distribution systems.
The transmitter is designed for long-term continuous operation with minimal maintenance requirements, making it suitable for critical machinery that operates around the clock.
Product Advantages
Continuous Condition Monitoring
The transmitter provides continuous vibration measurement during equipment operation, allowing maintenance personnel to monitor machine health without interrupting production.
Early Fault Detection
Changes in vibration levels can indicate developing mechanical problems, allowing maintenance teams to take corrective action before major failures occur.
Typical detectable conditions include:
- Bearing wear
- Rotor imbalance
- Shaft misalignment
- Mechanical looseness
- Coupling problems
- Structural vibration
- Abnormal operating conditions
Reliable Industrial Design
The rugged construction allows dependable operation in harsh industrial environments with vibration, dust, humidity, temperature changes, and electrical interference.
Simple System Integration
The 4–20 mA output provides compatibility with common industrial automation systems, reducing engineering complexity and installation effort.
Compact Installation Size
The small mechanical design allows installation on equipment where mounting space is limited.
Reduced Maintenance Cost
Continuous monitoring allows maintenance activities to be scheduled according to actual equipment condition rather than fixed time intervals.
Improved Equipment Reliability
By identifying vibration problems at an early stage, the transmitter helps prevent severe mechanical damage and extends machinery operating life.
Long-Term Measurement Stability
Stable electronic performance ensures reliable vibration data over extended operating periods.
Product Applications
The 991-06-50-01-01 is suitable for a wide range of industrial applications requiring continuous vibration monitoring of rotating machinery.
Pump Applications
Commonly installed on:
- Centrifugal pumps
- Process pumps
- Cooling water pumps
- Boiler feed pumps
- Circulation pumps
Motor Applications
Suitable for monitoring:
- Large electric motors
- Drive motors
- Fan motors
- Pump motors
- Auxiliary motors
Compressor Applications
Used for:
- Air compressors
- Gas compressors
- Refrigeration compressors
- Process compressors
Turbine Applications
Suitable for:
- Steam turbines
- Gas turbines
- Auxiliary turbine systems
Industrial Equipment Applications
Applicable to:
- Gearboxes
- Fans
- Blowers
- Cooling towers
- Conveyors
- Mining equipment
- Chemical processing machinery
- Marine rotating systems
- Manufacturing equipment
Recommended Models from the Same Series or Related Series
| Model | Product Type | Output Signal | Power Supply | Frequency Response | Dimensions | Weight (kg) |
|---|---|---|---|---|---|---|
| 991-06-50-01-00 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-01-XX-01-05 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-01-XX-01-00 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-05-70-01-01 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-25-50-01-00 | Industrial Vibration Transmitter | 4–20 mA | 24 VDC | 10 Hz–1000 Hz | Approx. 112 × 38 mm | Approx. 0.45 kg |
Popular Models from the Same Brand
| Model | Product Type | Main Function | Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 3300 XL 8 mm Proximitor Sensor | Proximity Sensor System | Shaft Vibration and Position Monitoring | Turbines, Compressors, Motors | Approx. 120 × 45 mm | Approx. 0.60 kg |
| 330103-00-05-10-02-00 | Proximity Probe | Shaft Displacement Measurement | Rotating Machinery Protection | Approx. 110 × 25 mm | Approx. 0.30 kg |
| 3500/22M | Monitoring Interface Module | Dynamic Machinery Data Collection | Online Monitoring Systems | Approx. 241 × 24 × 242 mm | Approx. 0.80 kg |
| 3500/42M | Machinery Monitoring Module | Vibration and Position Monitoring | Critical Equipment Protection | Approx. 241 × 24 × 242 mm | Approx. 0.85 kg |
| 3500/40M | Monitoring Module | Shaft Position and Vibration Measurement | Industrial Rotating Equipment | Approx. 241 × 24 × 242 mm | Approx. 0.82 kg |
Product Summary
The Bently Nevada 991-06-50-01-01 is a reliable industrial vibration transmitter designed for permanent installation and continuous monitoring of rotating machinery. As part of the 991 Series, it provides a practical solution for measuring machine housing vibration and transmitting reliable vibration information through a standard 4–20 mA analog signal.
The transmitter combines compact size, rugged construction, integrated electronics, stable performance, and simple system integration. These characteristics make it suitable for industrial environments where machinery reliability and continuous operation are critical.
Through continuous vibration monitoring, the transmitter helps detect early signs of mechanical problems including imbalance, bearing degradation, misalignment, looseness, and abnormal vibration conditions. This enables predictive maintenance strategies that reduce unexpected failures, improve equipment availability, optimize maintenance schedules, and extend machinery service life.
The 991-06-50-01-01 is widely suitable for applications in power generation, petrochemical processing, oil and gas facilities, mining operations, manufacturing plants, water treatment systems, marine engineering, and other industries requiring dependable rotating equipment condition monitoring.