Product Description

Overview

The Bently Nevada 177896-01 is a precision Seismoprobe Velocity Transducer engineered for measuring absolute machine vibration. Part of the 330500 series Velomitor family, this sensor captures the velocity of bearing housings, casings, and structural supports, providing critical data for machinery protection systems. Unlike proximity probes that track relative shaft movement, the 177896-01 delivers accurate measurements of the machine’s movement relative to free space.

Its robust piezoelectric sensing element, combined with internal electronic integration, outputs a velocity-proportional voltage without mechanical moving parts. This design enhances durability, minimizes wear, and ensures long-term reliability in harsh industrial environments.

Technical Specifications

System Compatibility

• Interfaces seamlessly with Bently Nevada 3500/42M and Trendmaster systems

• Supports two-wire signal and ground-isolated connections to prevent electrical interference

Applications

• Monitoring casing vibration in pumps, motors, and fans

• Detecting early to late-stage rolling element bearing failures

• Low-speed machinery where relative displacement probes cannot be installed

• Integration into centralized machinery protection platforms

FAQ

Q: Can the 177896-01 be used in high-temperature environments?
A: Yes, it is rated for continuous operation up to 121°C (250°F).

Q: How do I ensure compatibility when replacing this sensor?
A: Confirm the mounting stud thread size matches your existing installation, typically 1/4-28 or M8x1.25.

Q: What is the main difference between this and older moving-coil velocity transducers?
A: The 177896-01 has no moving parts, improving durability and eliminating mechanical sticking issues.

Similar Models Comparison:

• 330501 Series: Standard Velomitor with similar frequency range but lower temperature rating

• 330502 HT Series: High-temperature version for extreme environments