330400 and 330425 Accelerometer Acceleration Transducers
11Pages

330400 and 330425 Accelerometer Acceleration Transducers Datasheet Bently Nevada Machinery Condition Monitoring 141638 Rev. Description 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. Most common machine malfunctions (unbalance, misalignment, etc.) occur on the rotor and originate as an increase (or at least a change) in rotor vibration. For any individual casing measurement to be effective for overall machine protection, the system must continually transmit a significant amount of rotor vibration to the machine casing, or mounting location of the transducer. In addition, be careful to install the accelerometer transducer on the bearing housing or machine casing. Improper installation may decrease the transducer amplitude and frequency response and/or generate false signals that do not represent actual vibration. Refer to the appropriate instruction manuals and Application Notes. Upon request, Bently Nevada provides engineering services that can identify the appropriate machine housing measurements and installation assistance if needed.

330400 and 330425 Accelerometer Acceleration Transducers Datasheet Specifications Parameters are specified from +20 to +30 °C (+68 to +86 °f) and 100 Hz unless otherwise indicated. Broadband Noise Floor (10 Hz to 15 kHz) Operation outside the specified limits may result in false readings or loss of machine monitoring.

330400 and 330425 Accelerometer Acceleration Transducers Datasheet

330400 and 330425 Accelerometer Acceleration Transducers Datasheet

141638 Rev. AA Compliance and Certifications Hazardous Area Approvals For the detailed listing of country and product specific approvals, refer to the Approvals Quick Reference Guide (108M1756) available from Bently.com. csa/nrtl/c 190501 (Agency Approval Options 01 through 04)

330400 and 330425 Accelerometer Acceleration Transducers Datasheet

330400 and 330425 Accelerometer Acceleration Transducers Datasheet For the detailed listing of country and product specific approvals, refer to the Approvals Quick Reference Guide (108M1756) available from Bently.com.

330400 and 330425 Accelerometer Acceleration Transducers Datasheet

330400 and 330425 Accelerometer Acceleration Transducers Datasheet Figure 1: Acceleration Transducer Dimensional Drawing Dimensions are in millimetres (inches)

330400 and 330425 Accelerometer Acceleration Transducers Datasheet Figure 2: Typical Amplitude Response Figure 3: 10 – 10,000 Hz Typical Amplitude Response Detail

330400 and 330425 Accelerometer Acceleration Transducers Datasheet Copyright 2022 Baker Hughes Company. All rights reserved. Bently Nevada, M2 and Orbit Logo are registered trademarks of Bently Nevada, a Baker Hughes business, in the United States and other countries. The Baker Hughes logo is a trademark of Baker Hughes Company. All other product and company names are trademarks of their respective holders. Use of the trademarks does not imply any affiliation with or endorsement by the respective holders. Baker Hughes provides this information on an “as is” basis for general information...