Configured for casing vibration acceleration measurement in TSI machinery monitoring systems, the Bently Nevada 330425-01-05 (330425 accelerometer transducer) provides direct physical/electrical execution.
Hardware Specifications
Parameter
Specification
ModelBrand
Bently Nevada 330425-01-05
Origin
USA
Weight
0.1 kg
Dimensions
6.5 x 2.5 x 2.3 cm
OperatingTemp
-67 to 250 degF
PowerConsumption
24 VDC nominal supply
Sensitivity
2.5 mV/m/s2 (25 mV/g) +/-5%
Frequency Response
10 Hz to 15 kHz / 30 Hz to 10 kHz
Linearity
+/-1% up to 735 m/s2 (75 g peak)
Mounting
1/4-28 UNF integral stud
Cross-Talk Suppression and Rotordynamic Signal Conditioning (Bently Nevada specific)
The 330425-01-05 sensor architecture follows Bently Nevada machinery monitoring principles with emphasis on rotordynamic signal integrity. Mechanical-to-electrical conversion is optimized for casing acceleration capture under high-frequency excitation conditions. The sensing element design supports cross-talk suppression between axial and transverse vibration components, maintaining axial sensitivity deviation below 5%.
Signal scaling behavior is aligned with eddy-current probe reference frameworks used in condition monitoring chains, enabling consistent amplitude correlation between acceleration and derived vibration velocity models. System-level integration supports gap voltage validation logic with reference operating envelopes approaching -10 VDC baseline conditions in associated transducer networks.
Frequently Asked Questions
Q: Can the 330425-01-05 be directly integrated into existing Bently Nevada monitoring channels? A: Yes. It is electrically compatible with standard accelerometer input modules supporting 24 VDC excitation and mV-level charge input conditioning.
Q: What is the impact of mounting torque on measurement stability? A: Improper stud engagement at the 1/4-28 UNF interface can introduce mechanical preload variation, affecting high-frequency response above 10 kHz.
Q: Does the sensor support hot-swap operation in energized systems? A: No hot-swap is supported. Signal line disconnection under excitation may cause transient overvoltage at the conditioning input stage.
Field Installation Guidelines
Ensure the mounting surface is rigid, flat, and free of paint or insulating layers to maintain consistent mechanical coupling. The 1/4-28 UNF stud must achieve full thread engagement to prevent resonance detuning under high-g vibration.
Signal cable routing must maintain separation from high-voltage conductors to reduce induced noise. Shield termination should be grounded at a single point on the monitoring system side to avoid ground loop formation.
Avoid excessive bending stress near the sensor base; minimum bend radius should comply with standard industrial instrumentation cable practices. Environmental sealing should be verified for applications approaching upper temperature limits of 250 degF.
