The Bently Nevada 330500-02-CN, also cataloged as the 330500 Velomitor Piezo-Velocity Sensor, operates as a dedicated vibration measurement device for velocity signal acquisition within Bently Nevada mechanical monitoring systems. It converts casing vibration velocity into an electrical output signal through integrated solid-state electronics.

Model Configuration Overview

The 330500-02-CN version includes the 02 mechanical configuration with an M8 x 1 mounting thread and the CN suffix indicating multiple approval configurations. The sensor is designed for direct installation on machinery housings where vibration velocity measurement is required.

Hardware Specifications

Mechanical Monitoring Characteristics

The 330500 series sensor operates as part of a vibration monitoring measurement chain where velocity output is evaluated by machinery protection systems. Unlike eddy-current proximity probes that measure shaft displacement and require gap voltage validation, the Velomitor sensor directly detects casing vibration velocity through piezoelectric sensing technology.

For rotating equipment monitoring applications, installation practices must consider mechanical coupling, mounting surface condition, and signal cable routing. Proper mounting reduces measurement distortion caused by external vibration transmission paths.

Ordering Information

• 1 x Bently Nevada 330500-02-CN Velomitor Piezo-Velocity Sensor
• 1 x Integrated sensor housing with M8 x 1 mounting interface
• Sensor documentation according to manufacturer configuration

Field Installation Guidelines

• Install the sensor on a clean, flat machine surface to maintain mechanical coupling accuracy.
• Ensure the M8 x 1 mounting connection is properly secured before operation.
• Route signal wiring separately from high-voltage power cables to reduce electrical interference.
• Connect cable shields according to the monitoring system grounding practice.
• Avoid mechanical stress on the sensor body and cable termination area.
• Verify the monitoring channel scaling parameters match the sensor sensitivity rating.

Frequently Asked Questions

• What measurement parameter does the 330500-02-CN provide?

The sensor provides vibration velocity measurement output using integrated piezoelectric sensing electronics.

• Is the 330500-02-CN an eddy-current proximity probe?

No. It is a piezo-velocity sensor and does not measure shaft displacement or require probe gap voltage adjustment.

• What mounting thread is used on this sensor?

The sensor uses an M8 x 1 mechanical mounting interface according to the provided configuration.

• What is the operating temperature range?

The specified operating range is -55 deg C to 121 deg C (-67 deg F to 250 deg F).

• Does the sensor contain integrated electronics?

Yes. The 330500 incorporates solid-state electronics inside the sensor assembly.

• What is the sensitivity value of this sensor?

The sensitivity is 3.94 mV/mm/s (100 mV/in/s) with +/-5% tolerance.

• Can the sensor operate in high humidity environments?

Yes. The case is hermetically sealed and supports up to 100% non-submerged humidity conditions.

• What installation factor affects vibration measurement accuracy?

Mechanical mounting condition, surface contact quality, and correct cable routing influence signal accuracy.