Functions

Specialized monitoring for reciprocating machinery
Optimized for low-frequency vibration and impact signals typical of reciprocating machines. Accurately measures key parameters such as pulse acceleration and reciprocating speed, fully matching the vibration characteristics of crankshafts and crossheads.

Flexible channel configuration
Four-channel paired architecture allows independent configuration of measurement functions, enabling differential monitoring across multiple measurement points.

High-precision signal processing
Wide frequency response covering the dominant vibration frequencies of reciprocating machinery. Built-in filtering and calibration algorithms provide alarm accuracy up to ±0.13% of the setpoint.

Multi-level alarms and protection
Programmable alert and danger thresholds with alarm delay and anti-nuisance logic. Relay outputs can be directly linked to machine trip and shutdown protection.

Remote diagnostics and maintenance
Supports remote configuration, calibration, and fault diagnostics via 3500 rack configuration software. Front-panel LED indicators allow rapid identification of channel and communication faults.

Industrial-grade reliability
Dual isolation design with strong electromagnetic interference immunity, wide operating temperature and voltage range, and suitability for harsh industrial environments. MTBF > 100,000 hours.

Applications

Oil and gas
Crankshaft and crosshead vibration monitoring for reciprocating compressors and pump sets, compatible with 3500-series compressor protection systems.

Chemical industry
Vibration condition monitoring and early fault warning for process compressors and diaphragm pumps.

General industry
Predictive maintenance of reciprocating machinery to minimize unplanned downtime and improve equipment availability.

Bently Nevada 3500/70M-01-00｜Velocity Monitor｜