The Bently Nevada 145004-47, also cataloged as the 330180-X1-05 Proximitor Sensor, operates as a dedicated hardware component for contactless shaft vibration and axial position measurement within 3300 XL Machinery Protection System platforms.
| Parameter | Specification |
|---|---|
| Model | 145004-47 (330180-X1-05) |
| Brand | Bently Nevada |
| Origin | USA |
| Weight | 0.25 kg |
| Dimensions | 81.3 mm x 61.2 mm x 43.2 mm |
| Operating Temp | -35 deg C to +100 deg C |
| Power Consumption | 30 mA maximum |
| Compatible Probe | 3300 XL 11mm Proximity Probe |
| Output Sensitivity | 3.94 V/mm (100 mV/mil) Nominal |
| Linear Range | 4.0 mm (160 mils) |
| Frequency Response | 0 Hz to 10 kHz |
| System Length | 5.0 Meters |
| Accuracy | Within +/-0.25% of full-scale range |
| Input Voltage | -17.5 VDC to -26 VDC |
| Compliance | API 670 Standard |
The unit conditions high-frequency RF signals to drive precise eddy-current probe scaling across the 4.0 mm linear range. Internal circuitry relies on rigorous gap voltage validation (-10 VDC targets representing nominal mid-scale position) to preserve measurement linearity during rotor dynamics transitions. Signal conditioning pathways suppress cross-talk caused by adjacent channel magnetic field overlap, which ensures deterministic signal delivery over long field cable runs to downstream monitoring racks.
Q: Can an engineer connect the 145004-47 Proximitor Sensor directly to an 8mm proximity probe?
A: No, connecting an 8mm probe alters the magnetic field inductance, causing severe scale factor errors and invalidating calibrated linearity across the output range.
Q: What impact does altering total system cable length have on signal execution?
A: Deviating from the factory-calibrated 5.0-meter system length changes total loop capacitance, which shifts nominal sensitivity away from the specified 100 mV/mil performance threshold.
Q: Is field recalibration required during replacement of a damaged module?
A: No, standard 5.0-meter matched components swap directly into the loop, as factory-preset gain curves maintain interchangeability without field potentiometer adjustments.
Mount the metallic enclosure securely onto a grounded DIN rail or sub-panel using direct mechanical fasteners. Ensure the coaxial cable connectors maintain clean metal-to-metal surface connection, and wrap external cable joints in self-fusing silicone tape to prevent moisture ingress. Verify that power source wiring supplies stable negative voltage within the -17.5 VDC to -26 VDC operating window. Route signal wiring through dedicated instrument trays, maintaining proper physical isolation from high-voltage AC lines to prevent ambient noise coupling. Always establish single-point shield grounding at the monitor rack to eliminate ground loop currents across the transducer loop.
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