Technical Specifications

FAQ

1. What is the main purpose of this proximity probe?

This probe is designed to measure the relative motion between a rotating shaft and the probe tip without physical contact. It continuously monitors vibration and axial position changes in rotating machinery. The output signal is used in condition monitoring systems to detect early mechanical changes such as imbalance, misalignment, shaft instability, or bearing degradation. By providing real-time displacement data, it supports predictive maintenance strategies and helps prevent unexpected equipment failures.

2. What types of equipment is this probe typically installed on?

This probe is commonly used on critical rotating equipment such as steam turbines, gas turbines, compressors, pumps, electric motors, and large industrial gearboxes. These machines operate under high speed and continuous load conditions, where even small shaft movements can indicate developing mechanical issues. The probe plays a key role in monitoring machine health in power generation, oil and gas, petrochemical, and heavy industrial applications.

3. How does eddy current sensing technology work in this probe?

The probe generates a high-frequency electromagnetic field at its sensing tip. When a conductive metal surface enters this field, eddy currents are induced within the material. These currents alter the impedance of the probe coil. The system converts this impedance variation into a voltage signal that is directly proportional to the distance between the probe and the target surface. This allows highly accurate, non-contact measurement of shaft movement in harsh industrial environments.

4. What factors can influence measurement accuracy?

Measurement accuracy can be affected by several factors, including the electrical conductivity and surface condition of the target shaft, mechanical stability of the probe mounting, and environmental conditions such as temperature variation. Electrical noise from nearby high-power equipment and improper grounding can also introduce signal instability. To maintain accurate measurements, correct installation practices, stable mechanical support, and proper system calibration are essential.

5. What are the key installation requirements?

Proper installation requires a rigid mounting structure to prevent mechanical vibration from affecting measurement stability. The probe must be positioned at a precise and consistent gap relative to the shaft surface according to system specifications. Cable routing should avoid proximity to high-voltage or high-current conductors to minimize electromagnetic interference. Alignment accuracy is also critical to ensure the probe correctly captures radial or axial shaft movement without distortion.

6. Is this probe suitable for continuous monitoring?

Yes, this probe is specifically designed for continuous, real-time monitoring of rotating machinery. It is widely used in 24/7 condition monitoring systems where uninterrupted data acquisition is required. Because it operates without physical contact, there is no mechanical wear between the probe and the shaft, enabling long-term stable operation even in demanding industrial environments.

7. How is system calibration performed?

The probe is typically factory calibrated and designed to work with compatible signal conditioning modules. During system integration, it is matched with the appropriate monitoring electronics to ensure correct conversion of voltage signals into displacement values. In some applications, additional system-level calibration is performed to align measurement output with specific machine characteristics, ensuring accurate vibration analysis and long-term trend monitoring.

8. What maintenance is required for this probe?

Maintenance requirements are minimal due to its non-contact measurement design. However, periodic inspections are recommended to ensure the probe remains securely mounted and free from mechanical looseness. Cable integrity should be checked regularly to prevent signal disruption, and connectors should be kept clean and properly seated. It is also important to avoid contamination or physical damage to the probe tip, ensuring consistent measurement performance over time.