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The Bently Nevada 330500-02-02 is a Velomitor® Piezo-Velocity Sensor designed to measure absolute vibration relative to free space. It is intended for vibration measurement on bearing housings, machine casings, and structural components, providing a direct method for monitoring vibration at these locations.

The 330500 is a specialized piezoelectric accelerometer that incorporates embedded integrated electronics within a solid-state design. This construction combines the sensing function and integrated electronics into a single sensor configuration for vibration measurement.

The 330500-02-02 measures absolute bearing housing vibration, meaning that the vibration measurement is referenced relative to free space. The same sensing principle also allows the sensor to measure casing vibration and structural vibration.

Another important characteristic of the 330500 Velomitor® Sensor is its flexible mounting orientation. Because of its solid-state construction, the sensor can be installed vertically, horizontally, or at any other angle of orientation.

Frequently Asked Questions

Q: Can the 330500-02-02 directly replace a proximity probe?

No. Proximity probes (like the 3300 XL series) measure relative shaft motion inside the bearing. The 330500 measures absolute casing vibration. They monitor different fault mechanisms and cannot replace each other.

Q: What is the standard scale factor (sensitivity) of the 330500-02-02?

The standard sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5% at 100 Hz.

Q: What is the frequency response range of this sensor?

The frequency range is 4.5 Hz to 5,000 Hz (within a ±3 dB bandwidth limit).

Q: What is the operating temperature range for the 330500-02-02?

The operating temperature limits are -55°C to +121°C (-67°F to +250°F).

Product Applications

Power Industry: Vibration monitoring of bearing housings in power plants, including steam turbines, hydro-generator sets, large fans, and water pumps.

Petrochemical Industry: Vibration monitoring of centrifugal compressors, reciprocating compressors, various industrial pumps, and gearboxes in oil refineries and chemical plants.

Steel and Heavy Industry: Vibration measurement of casings in blast furnace blowers, exhaust fans, large motors, and auxiliary equipment for rolling mills.

Water and Environmental Protection: Long-term safety monitoring of high-power water pumps and fans in large water plants and wastewater treatment plants.