Description
Overview
The Bently Nevada 21504‑000‑008‑10‑02 is a standard‑mount, reverse‑installation proximity probe designed for precise non‑contact displacement measurement in rotating and reciprocating machinery. As part of Bently Nevada’s proximity transducer family, it delivers stable, high‑resolution shaft position and vibration data essential for machinery protection and condition monitoring.
Design and Construction
This probe features an 8 mm tip diameter and a 3/8‑24 UNF threaded body, making it compatible with standard mounting hardware used across the 3300 XL ecosystem. The 21504‑000‑008‑10‑02 is available in armored and unarmored configurations, allowing users to select the appropriate level of mechanical protection for their installation environment.
A miniature male coaxial connector provides a secure electrical interface, ensuring low‑noise signal transmission to the Proximitor sensor. The probe’s compact 0.8‑inch case length supports installation in restricted spaces without compromising measurement accuracy.
Technical Specifications
| Parameter |
Specification |
| Model |
21504‑000‑008‑10‑02 |
| Probe Type |
Standard‑Mount 8 mm Reverse‑Mount Probe |
| Thread Type |
3/8‑24 UNF |
| Tip Diameter |
8 mm |
| Linear Range |
80 mil (2.0 mm) |
| Gap Reference |
Starts approx. 10 mil from probe face |
| Case Length |
0.8 in |
| Operating Temperature |
−51°C to +177°C |
| Connector |
Miniature male coaxial |
| Armor Options |
Armored / Unarmored |
| Compliance |
API 670 |
| Weight |
0.02 kg |
| Dimensions |
10 × 10 × 1.5 cm |
| HS Code |
8537101190 |
| Origin |
USA |
| Minimum Order |
1 unit |
| Product Status |
Active |
| System Compatibility |
3300 XL Proximity Transducer System |
Performance Characteristics
The 21504‑000‑008‑10‑02 provides accurate gap‑to‑voltage conversion for displacement and vibration monitoring. Its reverse‑mount design is ideal for applications requiring probe installation from the back side of the mounting bracket, improving accessibility and protection.
The probe’s wide operating temperature range and API 670 compliance ensure reliable performance in harsh industrial environments, including high‑temperature turbine housings and compressor casings.
Application Scenarios
-
Steam and gas turbine vibration and position monitoring
-
Compressor rod position and differential expansion measurement
-
Pump and motor shaft displacement monitoring
-
OEM equipment integration requiring reverse‑mount probes
-
High‑temperature or high‑vibration industrial environments
FAQ
Q: What makes this probe suitable for reverse‑mount applications Its compact case length and threaded body allow installation from the rear of the mounting bracket, improving accessibility and protection.
Q: Is this probe compatible with 3300 XL Proximitor sensors Yes. It integrates seamlessly with the full 3300 XL proximity transducer system.
Q: Does it meet industry standards for critical machinery monitoring Yes. It complies with API 670 requirements for proximity measurement systems.
