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- Bently Nevada
- 991-06-50-01-00
- Vibration Transmitter
- USA
- 112 × 38 mm
- 0.45kg
- Xiamen, China
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Bently Nevada 991-06-50-01-00
Comprehensive Product Overview, Technical Specifications, Product Applications, Advantages, Series Information, and Recommended Models
Product Overview
The Bently Nevada 991-06-50-01-00 is a compact industrial vibration transmitter designed for permanent installation on rotating machinery. It is developed for continuous condition monitoring applications where reliable vibration measurement, stable signal transmission, and long-term operational performance are required.
The transmitter belongs to the 991 Series and is designed to measure overall machine casing vibration and convert the vibration signal into a standard 4–20 mA analog output. This output format allows direct connection with industrial automation systems, including PLC, DCS, SCADA, and other plant monitoring platforms.
The 991-06-50-01-00 combines vibration sensing, signal processing, and output conversion into one integrated device. This design reduces the need for additional signal-conditioning equipment, simplifies installation, and improves system reliability.
The transmitter is commonly installed on bearing housings, motor frames, pump casings, compressor bodies, gearbox housings, and other rotating equipment structures. By continuously monitoring vibration levels, it provides valuable information about machine operating conditions and helps identify early signs of mechanical problems.
The device is particularly suitable for predictive maintenance programs because it allows maintenance teams to monitor equipment health continuously instead of relying only on periodic manual inspections. Early detection of abnormal vibration conditions can help prevent unexpected equipment failures, reduce production interruptions, and extend machinery service life.
The rugged construction of the transmitter allows stable operation in industrial environments where equipment may experience continuous vibration, temperature changes, humidity, dust, oil contamination, and electrical interference.
The compact design, standard analog output, and reliable performance make the 991-06-50-01-00 suitable for a wide range of industrial machinery monitoring applications.
Brand Information
| Item | Description |
|---|---|
| Brand | Bently Nevada |
| Product Category | Industrial Vibration Transmitter |
| Product Type | Permanent Machinery Condition Monitoring Device |
| Application Type | Rotating Equipment Protection and Monitoring |
| Output Type | 4–20 mA Analog Current Output |
| Installation Method | Direct Machine Mounting |
| Monitoring Target | Machine Housing Vibration |
Product Series
The 991 Series is a family of compact vibration transmitters designed for continuous monitoring of rotating machinery.
The series focuses on providing a simple, reliable, and cost-effective solution for industrial vibration measurement. Each transmitter integrates vibration sensing technology and signal conditioning electronics into a single compact housing, allowing direct connection to existing automation and monitoring systems.
Compared with traditional vibration monitoring systems that may require multiple separate components, the 991 Series provides a simplified installation structure with fewer external devices and reduced wiring requirements.
The main characteristics of the 991 Series include:
- Continuous online vibration monitoring
- Compact mechanical structure
- Integrated signal conditioning
- Standard 4–20 mA output
- High resistance to industrial interference
- Long-term measurement stability
- Easy installation and maintenance
- Suitable for harsh industrial environments
The series is commonly applied to:
- Pumps
- Motors
- Compressors
- Fans
- Blowers
- Gearboxes
- Turbines
- Cooling equipment
- Process machinery
- Auxiliary rotating equipment
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 991-06-50-01-00 |
| Product Type | Industrial Vibration Transmitter |
| Product Series | 991 Series |
| Measurement Principle | Velocity-Based Housing Vibration Measurement |
| Monitoring 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 Machine Vibration Monitoring Range |
| Accuracy | ±2% Full Scale (Typical) |
| Signal Conditioning | Integrated Electronic Processing |
| Response Time | Fast Dynamic Response |
| Electrical Connection | Industrial Connector |
| Mounting Method | Stud Mount Installation |
| 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 Linearity | High Linear Response |
| Maintenance Requirement | Low Maintenance |
| Service Life | Long-Term Continuous Operation |
| Dimensions | Approximately 112 × 38 mm |
| Weight (kg) | Approximately 0.45 kg |
Product Features
The 991-06-50-01-00 is designed with an integrated structure that combines vibration measurement and signal transmission functions into a compact industrial device.
The built-in electronic processing system converts vibration signals into a stable analog current output, reducing installation complexity and eliminating the requirement for additional signal conversion equipment.
The 4–20 mA output provides excellent compatibility with industrial automation systems. It can be easily connected to existing monitoring platforms, allowing operators to receive continuous vibration information from critical machinery.
The transmitter uses a rugged industrial enclosure designed to protect internal electronics from harsh operating conditions. The housing provides resistance against corrosion, moisture, dust, oil contamination, and mechanical impact.
The compact size allows flexible installation on different types of rotating equipment. It can be mounted in locations where installation space is limited while still maintaining accurate vibration measurement.
The integrated electronics provide stable signal processing and minimize measurement errors caused by electrical noise or environmental interference.
The transmitter is optimized for continuous operation and requires minimal maintenance, making it suitable for machinery that operates around the clock.
Product Advantages
Continuous Machinery Monitoring
The transmitter continuously monitors vibration levels during equipment operation, providing real-time information about machinery condition.
This allows maintenance personnel to detect abnormal operating conditions before they develop into major failures.
Reliable Industrial Performance
The rugged design allows stable operation in industrial environments exposed to vibration, temperature changes, moisture, dust, and electrical interference.
Easy Installation and Integration
The standard 4–20 mA output allows direct connection with PLC, DCS, SCADA, and industrial control systems without complicated additional equipment.
Compact and Space-Saving Design
The small mechanical structure allows installation directly on machines with limited mounting space.
Reduced Maintenance Requirements
The integrated design reduces the number of components requiring maintenance, improving system reliability and lowering maintenance workload.
Improved Fault Detection
Continuous vibration measurement helps identify common rotating machinery problems, including:
- Bearing wear
- Rotor imbalance
- Shaft misalignment
- Mechanical looseness
- Coupling problems
- Resonance conditions
- Structural vibration issues
Longer Equipment Service Life
By identifying problems at an early stage, maintenance teams can take corrective action before severe damage occurs, extending machinery operating life.
Cost-Effective Condition Monitoring
The transmitter provides an economical solution for permanent vibration monitoring without requiring complex monitoring equipment.
Product Applications
The 991-06-50-01-00 is widely used in industrial applications where continuous monitoring of rotating equipment is required.
Typical applications include:
Pump Monitoring
Used for monitoring vibration conditions of:
- Centrifugal pumps
- Process pumps
- Cooling water pumps
- Feed pumps
- Circulation pumps
Motor Monitoring
Suitable for:
- Large industrial motors
- Electric drive systems
- Auxiliary motors
- Fan motors
- Pump motors
Compressor Monitoring
Commonly applied to:
- Air compressors
- Gas compressors
- Refrigeration compressors
- Process compressors
Turbine Equipment
Used for monitoring:
- Steam turbines
- Gas turbines
- Auxiliary turbine systems
Industrial Machinery
Applicable equipment includes:
- Gearboxes
- Fans
- Blowers
- Conveyors
- Cooling towers
- Manufacturing machinery
- Mining equipment
- Chemical processing machinery
- Marine rotating equipment
Recommended Models from the Same Series or Related Series
| Model | Product Type | Output Signal | Frequency Response | Power Supply | Dimensions | Weight (kg) |
|---|---|---|---|---|---|---|
| 991-01-XX-01-05 | Industrial Vibration Transmitter | 4–20 mA | 10 Hz–1000 Hz | 24 VDC | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-01-XX-01-00 | Industrial Vibration Transmitter | 4–20 mA | 10 Hz–1000 Hz | 24 VDC | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-01-XX-01-CN | Industrial Vibration Transmitter | 4–20 mA | 10 Hz–1000 Hz | 24 VDC | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-05-70-01-01 | Industrial Vibration Transmitter | 4–20 mA | 10 Hz–1000 Hz | 24 VDC | Approx. 112 × 38 mm | Approx. 0.45 kg |
| 991-25-50-01-00 | Industrial Vibration Transmitter | 4–20 mA | 10 Hz–1000 Hz | 24 VDC | Approx. 112 × 38 mm | Approx. 0.45 kg |
Popular Models from the Same Brand
| Model | Product Type | Main Function | Operating Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 3300 XL 8 mm Proximitor Sensor | Proximity Sensor System | Shaft Displacement and Vibration Monitoring | Turbines, Compressors, Motors | Approx. 120 × 45 mm | Approx. 0.60 kg |
| 330103-00-05-10-02-00 | Proximity Probe | Shaft Position Measurement | Rotating Machinery Protection | Approx. 110 × 25 mm | Approx. 0.30 kg |
| 3500/22M | Monitoring Interface Module | Machinery Data Acquisition | Online Monitoring Systems | Approx. 241 × 24 × 242 mm | Approx. 0.80 kg |
| 3500/42M | Monitoring Module | Vibration and Position Monitoring | Machinery Protection Systems | Approx. 241 × 24 × 242 mm | Approx. 0.85 kg |
| 3500/40M | Monitoring Module | Shaft Position and Vibration Monitoring | Critical Rotating Equipment | Approx. 241 × 24 × 242 mm | Approx. 0.82 kg |
Product Summary
The Bently Nevada 991-06-50-01-00 is a compact and reliable industrial vibration transmitter designed for continuous machinery condition monitoring. As a member 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 output.
The transmitter combines compact construction, integrated electronics, industrial durability, and simple system integration into one efficient monitoring device. Its ability to provide continuous vibration information makes it highly suitable for predictive maintenance programs across many industries.
By detecting early signs of mechanical problems such as imbalance, bearing deterioration, misalignment, looseness, and abnormal vibration conditions, the transmitter helps maintenance teams improve equipment reliability and reduce unexpected failures.
The 991-06-50-01-00 is suitable for applications in power generation, petrochemical processing, oil and gas facilities, mining operations, water treatment plants, manufacturing industries, marine systems, and other industrial environments where rotating machinery performance and reliability are critical.