Excellent PLC
Product Introduction
The Bently Nevada 991 Thrust Transmitter (Model: 991-25-70-01-00) is a compact signal conditioning device designed for axial position (thrust) measurement in rotating machinery. It converts the raw signal from an eddy current proximity probe into a standardized output suitable for control systems, protection systems, and distributed control systems (DCS).
This transmitter is typically used in applications where monitoring shaft axial displacement is critical for machinery protection, such as turbines, compressors, and pumps. It provides a reliable interface between the proximity probe system and plant control infrastructure, ensuring accurate and stable signal transmission.
The 991 Thrust Transmitter is engineered for industrial environments, offering robust performance under vibration, temperature variation, and electrical interference. Its compact design allows easy installation in control panels or field enclosures, making it suitable for both new installations and retrofit projects.
Product Specifications
| Parameter | Value |
|---|---|
| Product Type | Thrust Transmitter |
| Series | 991 Series |
| Model Number | 991-25-70-01-00 |
| Function | Axial position (thrust) signal conditioning |
| Input Signal | Eddy current proximity probe signal |
| Output Signal | Standard industrial analog output (e.g., 4–20 mA) |
| Measurement Type | Shaft axial displacement |
| System Compatibility | Bently Nevada proximity probe systems |
| Mounting Type | Panel or DIN rail mounting |
| Electrical Interface | Industrial terminal connections |
| Operating Environment | Industrial control systems |
| Environmental Resistance | Vibration and EMI resistant design |
| Dimensions | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
Applications
• Steam and gas turbine systems
Provides accurate monitoring of shaft axial position to prevent thrust bearing damage.
• Compressor protection systems
Enables detection of axial movement caused by load changes or mechanical faults.
• Pump monitoring systems
Supports continuous tracking of shaft thrust position and bearing condition.
• Industrial control systems (DCS/PLC)
Converts probe signals into standard analog outputs for system integration.
• Retrofit monitoring solutions
Used to upgrade existing systems with modern signal conditioning and output capabilities.
Advantages
• Accurate thrust measurement
Provides reliable conversion of probe signals into precise axial displacement data.
• Standardized output signal
Offers industry-standard analog output for easy integration with control systems.
• Compact and flexible installation
Small form factor allows installation in control panels or field enclosures.
• Strong noise immunity
Designed to resist electromagnetic interference in industrial environments.
• High system compatibility
Works seamlessly with Bently Nevada proximity probe systems.
• Reliable long-term operation
Built for continuous use in critical machinery protection applications.
