Bently Nevada 991-25-50-02-00 991 Thrust Sensor

Applications

• Monitors axial shaft displacement in centrifugal compressors to help prevent excessive thrust movement and bearing damage.

• Provides continuous thrust position monitoring for industrial steam and gas turbines.

• Protects rotating equipment such as pumps, motors, and generators by delivering accurate axial position feedback.

• Integrates with OEM machinery where reliable thrust measurement is essential for safe operation.

• Supports condition monitoring systems in petrochemical, power generation, and heavy manufacturing facilities.

• Ideal for machinery protection upgrades requiring a compact loop-powered thrust transmitter.

Key Advantages

• Delivers a standard 4–20 mA output for direct integration with PLC, DCS, and SCADA systems.

• Compact industrial design allows easy installation in space-constrained control cabinets and machinery.

• Compatible with Bently Nevada 3300 NSv proximity probe systems for accurate axial displacement measurement.

• Excellent long-term stability minimizes recalibration requirements and maintenance costs.

• High immunity to industrial electrical interference ensures reliable signal transmission.

• Provides dependable continuous monitoring for predictive maintenance and machine protection programs.

Technical FAQs

Q1: What does the 991-25-50-02-00 measure?
It measures shaft axial displacement (thrust position) on rotating machinery.

Q2: What output signal does the transmitter provide?
It provides a standard 4–20 mA proportional output signal.

Q3: Which proximity probe is compatible with this model?
It is designed to operate with the Bently Nevada 3300 NSv proximity probe system.

Q4: Can it connect directly to a PLC or DCS?
Yes. The analog output is compatible with most industrial automation systems.

Q5: Is the transmitter loop powered?
Yes, it is a two-wire, loop-powered transmitter.

Q6: What types of machinery commonly use this device?
Compressors, pumps, motors, fans, turbines, and generators.

Q7: Can it support predictive maintenance?
Yes. Continuous thrust position monitoring helps identify developing mechanical issues before failure.

Q8: Does it require an external signal conditioner?
No. Signal conditioning electronics are integrated within the transmitter.

Q9: Is it suitable for continuous industrial operation?
Yes. It is designed for long-term operation in demanding industrial environments.

Q10: Why is axial displacement monitoring important?
Monitoring shaft thrust helps protect thrust bearings and prevents mechanical damage caused by excessive axial movement.