Technical Specifications

FAQ

1. What is the main application of the 21505-00-60-10-02 8 mm armored probe?

This probe is designed for continuous condition monitoring of rotating machinery. It is commonly used on critical equipment such as steam turbines, gas turbines, centrifugal compressors, pumps, fans, and gearboxes. Its primary function is to measure shaft vibration and axial displacement in real time. By continuously tracking shaft movement, it provides essential data for machinery health assessment, allowing operators to detect early mechanical issues such as imbalance, misalignment, bearing wear, or rotor instability. This makes it a key component in predictive maintenance and machinery protection systems.

2. How does the eddy current measurement principle work in this probe?

The probe operates based on the eddy current non-contact measurement principle. A high-frequency electromagnetic field is generated at the probe tip. When this field interacts with a conductive rotating shaft, eddy currents are induced on the shaft surface. As the distance between the probe and the shaft changes due to vibration or axial movement, the intensity of the eddy currents changes accordingly. The probe converts this variation into a proportional electrical signal, which represents precise shaft displacement. This method provides high accuracy and is ideal for high-speed rotating machinery because it does not require physical contact.

3. Is this probe suitable for harsh industrial environments?

Yes, it is specifically engineered for harsh industrial conditions. The armored cable design provides strong mechanical protection against abrasion, oil exposure, vibration, and accidental impact. In addition, it offers excellent resistance to electromagnetic interference, which is critical in industrial environments with heavy electrical equipment. It is widely used in power generation, petrochemical plants, and heavy manufacturing industries where reliability and durability are essential.

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

In a machinery protection system, the probe serves as a primary sensing element that continuously monitors shaft behavior. It provides real-time vibration and displacement data, which is used by monitoring systems to evaluate machine condition. If abnormal patterns such as excessive vibration, shaft deflection, or instability are detected, the system can trigger alarms or even initiate automatic shutdowns. This helps prevent catastrophic equipment failure and ensures safe and stable operation of critical machinery.

5. How can measurement accuracy and reliability be ensured?

Measurement accuracy depends heavily on correct installation and stable operating conditions. The probe must be installed with a precisely controlled gap relative to the shaft surface to ensure it operates within its linear measurement range. The mounting structure should be rigid to prevent movement or drift during operation. The measurement area must be kept free from contamination such as oil, dust, or debris. Proper system calibration during commissioning is also essential to ensure the electrical output accurately reflects actual mechanical displacement.

6. Can this probe operate continuously in 24/7 monitoring systems?

Yes, this probe is designed for continuous online monitoring and is suitable for 24/7 operation in industrial environments. It is built with industrial-grade materials and a robust armored structure that ensures long-term stability under continuous mechanical and environmental stress. It is commonly deployed in critical machinery applications where uninterrupted monitoring is required to ensure operational safety and reliability.

7. What are the key installation requirements for this probe?

Proper installation is essential for reliable performance. The probe must be positioned at the correct distance from the rotating shaft to ensure accurate measurement within its operating range. The mounting system must be rigid and resistant to vibration to avoid positional drift. Cable routing should avoid proximity to high-voltage power lines or strong electromagnetic sources to minimize interference. Proper grounding practices should also be followed to maintain signal integrity and measurement stability.

8. Is this probe compatible with Bently Nevada 7200 series systems?

Yes, it is fully compatible with Bently Nevada 7200 series monitoring systems. It is designed to work together with matching proximitor modules and monitoring units as part of a complete machinery protection and condition monitoring solution. When integrated into the system, it enables real-time vibration monitoring, trend analysis, alarm management, and predictive maintenance functions, making it widely used in critical industrial assets where reliability and safety are essential.