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Manufacturer : Bently Nevada

Product : 330425-01-00 

Product type : Accelerometer Acceleration Tranducer

Amplitude Linearity: ±1% to 735 m/s² (75 g) peak

Sensitivity: 2.5 mV/m/s² (25 mV/g) ±5%

Broadband Noise Floor (10 Hz to 15 kHz): 0.098 m/s² (0.01 g) rms

Transverse Sensitivity: Less than 5% of axial

Mounted Resonant Frequency: Greater than 30 kHz

Amplitude of Resonant Peak: 20 dB maximum

Input Voltage: -24 ± 0.5 Vdc

Bias Current: 2 mA nominal

Output Bias Voltage: -8.5 ± 0.5 Vdc

Grounding: Case isolated

These accelerometers are intended for critical machinery applications where casing acceleration measurements are required, such as gear mesh monitoring.   The 330400 is designed to address the requirements of American Petroleum Institute Standard 670 for accelerometers.   It provides an amplitude range of 50 g peak and a sensitivity of 100 mV/g.   The 330425 is identical except it provides a larger amplitude range (75 g peak) and a sensitivity of 25 mV/g.

Frequently Asked Questions

Q1: What is the Bently Nevada 330425-01-00 Accelerometer used for?

A: The Bently Nevada 330425-01-00 Accelerometer Acceleration Transducer is used for vibration monitoring and machinery condition assessment. It measures acceleration levels in rotating equipment to help detect imbalance, misalignment, bearing defects, and other mechanical issues.

Q2: What is the sensitivity of the 330425-01-00 accelerometer?

A: The 330425-01-00 transducer has a sensitivity of 25 mV/g, providing reliable vibration measurements across a wide range of industrial applications.

Q3: What is the 330425-01-00 amplitude linearity specification?

A: The 330425-01-00 accelerometer provides ±1% amplitude linearity within the 75 g peak range, ensuring that the output signal remains proportional to the measured vibration level.

Q4: What is the frequency response range of the 330425-01-00?

A: The 330425-01-00 accelerometer offers a frequency response range of 10 Hz to 15 kHz, enabling detection of both low-frequency and high-frequency vibration events.

Product Applications 

Oil and Gas (Petrochemical): Widely used in large compressors and industrial pumps in oil refineries and chemical plants.

Power and Energy: Used for status monitoring of steam turbine units and generators in thermal power plants and nuclear power plants.

Metallurgy and Mining: Monitoring large fans and gearboxes in heavy machinery in steel mills and mines.