Technical Specifications

FAQ

1. What is the main function of the Bently Nevada 21500-00-08-10-02 7200 5 mm Probe?

The main function of this probe is to perform non-contact measurement of shaft vibration and displacement in rotating machinery. It uses eddy current technology to detect changes in the distance between the probe tip and the shaft surface. These changes are converted into electrical signals that represent real-time mechanical movement, enabling continuous monitoring of machine condition and early detection of faults.

2. Where is this probe typically used?

This probe is widely used in industrial rotating equipment such as steam turbines, gas turbines, compressors, pumps, and electric motors. These machines operate under high speed and heavy load conditions, where continuous monitoring of shaft behavior is essential for operational safety, efficiency, and predictive maintenance.

3. How does eddy current measurement technology work?

Eddy current technology generates a high-frequency electromagnetic field at the probe tip. When a conductive target, such as a metal shaft, approaches the field, eddy currents are induced on its surface. These currents change the electrical impedance of the probe system. By measuring these changes, the system calculates the precise distance between the probe and the shaft, enabling accurate displacement and vibration measurements.

4. What role does this probe play in a monitoring system?

In a condition monitoring system, this probe acts as the primary sensing element. It continuously captures real-time shaft movement data and converts mechanical motion into electrical signals. These signals are then processed by monitoring equipment to assess machine health, detect abnormalities, and support predictive maintenance decisions.

5. What should be considered during installation?

During installation, it is essential to maintain the correct gap between the probe tip and the shaft surface according to system calibration requirements. The probe must be securely mounted to prevent movement or vibration-induced errors. Proper alignment is critical to ensure accurate measurement, and care must be taken to avoid mechanical damage or excessive stress on the probe.

6. What can cause abnormal measurement readings?

Abnormal readings may result from incorrect probe positioning, loose mounting, damaged signal wiring, or contamination on the shaft surface. Electrical noise or improper system calibration can also affect signal stability. Regular inspection and recalibration help maintain measurement accuracy.

7. Is this probe suitable for harsh industrial environments?

Yes, this probe is designed for industrial use and can operate reliably in environments with vibration, oil mist, and mechanical stress. However, in extreme temperature or highly corrosive conditions, additional protective measures may be required to ensure long-term stability and accuracy.

8. What are the benefits of using this probe in condition monitoring systems?

This probe provides high-precision, non-contact measurement with long-term stability, making it ideal for continuous machinery monitoring. It enables early detection of mechanical issues such as imbalance, misalignment, and bearing wear. By providing accurate real-time data, it supports predictive maintenance strategies, reduces unexpected downtime, and improves overall equipment reliability.