The Bently Nevada 102242-00-05-50, also cataloged as the 102242 Vibration Transmitter / Piezoelectric Accelerometer, operates as a dedicated hardware component for converting machine vibration signals into standardized analog outputs for industrial condition monitoring networks.
Loop-powered, supplied through 4-20 mA current loop
Output Signal
4-20 mA DC
Measurement Variable
Vibration velocity or acceleration (configuration-dependent)
Frequency Response
10 Hz to 10 kHz
Sensor Sensitivity
Typically 100 mV/g
Enclosure Rating
IP65 / IP67
Housing Material
Stainless Steel
Mounting Method
Direct stud mounting on machine or bearing housing
Rotor Dynamics and Vibration Signal Processing
The Bently Nevada 102242 series is designed for direct measurement of mechanical vibration behavior from rotating equipment. The transmitter processes vibration acceleration signals through an integrated piezoelectric sensing element and converts the measured condition into a proportional 4-20 mA output.
The device supports vibration analysis requirements associated with rotor dynamics evaluation, including monitoring of unbalance, shaft misalignment, bearing degradation, and mechanical looseness. Signal conditioning is performed within the transmitter assembly to provide a standardized interface for PLC, DCS, and SCADA input channels.
For systems using Bently Nevada machinery protection architectures, vibration transmitter installation practices should consider sensor mounting stiffness, mechanical resonance effects, cable routing separation, and signal integrity requirements. Proper grounding and shielding practices reduce electrical interference during low-level vibration signal transmission.
Frequently Asked Questions
Q: Can the 102242-00-05-50 connect directly to a PLC or DCS analog input channel? A: Yes. The transmitter provides a 4-20 mA loop-powered output that can be connected directly to compatible analog input channels without requiring a separate proximity monitoring rack.
Q: What type of mechanical faults can be detected through this vibration transmitter? A: The measured vibration signal can be used for identifying conditions such as rotor unbalance, coupling misalignment, bearing wear, and mechanical looseness when integrated with appropriate monitoring logic.
Q: What installation factors affect vibration measurement accuracy? A: Measurement accuracy depends on correct mechanical mounting, proper sensor contact with the machine housing, suitable cable routing, and appropriate grounding and shielding of the signal loop.
Field Installation Guidelines
Install the transmitter directly onto the monitored machine structure or bearing housing using a rigid mechanical mounting method.
Ensure the mounting surface is clean and free from contamination that could affect vibration transfer.
Route signal cables separately from high-current power cables and variable frequency drive output wiring to minimize electromagnetic interference.
Connect cable shielding according to the plant grounding standard and avoid creating unintended ground loops.
Verify the 4-20 mA loop wiring polarity before applying operating power.
Confirm the transmitter output response through the control system analog input channel after installation.
Perform vibration baseline recording after commissioning to establish normal operating conditions for future condition monitoring.
