Product Overview

The Bently Nevada 3500/70M (specifically part number 136449-09 or 176449-09) is a sophisticated 4-channel monitor designed as a critical component of the 3500 Machinery Protection System. It is engineered specifically to address the unique vibration characteristics of reciprocating compressors. Unlike standard vibration monitors designed for rotating machinery, the Bently Nevada 3500/70M utilizes advanced signal processing to measure Reciprocating Velocity and Pulse Acceleration. This allows it to effectively filter out the high-frequency “ringing” often associated with reciprocating impacts, providing a true representation of the mechanical health of the compressor frame, crossheads, and cylinders.

Complementing this monitoring system is the Bently Nevada 9200-01-01-10-00. a robust two-wire Seismoprobe™ velocity transducer. This sensor is the primary input device for the 3500/70M in many compressor applications. The Bently Nevada 9200-01-01-10-00 utilizes a moving-coil seismic design that generates a voltage output directly proportional to the vibration velocity of the structure to which it is mounted. Known for its durability and “bullet” shape, this transducer is specifically selected for its ability to withstand harsh industrial environments while providing the low-frequency response required for accurate reciprocating machinery analysis. Together, the 3500/70M and the 9200 sensor form a comprehensive solution for protecting critical assets from mechanical failure.