Description

The Bently Nevada 16925-99, also cataloged as the 16925-99 Interconnect Cable, operates as a dedicated hardware component for eddy-current probe signal transmission within machinery management TSI platforms.

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

Proper operation of proximity sensor circuits relies on strict adherence to electrical scaling metrics and signal continuity. The 16925-99 cable maintains exact loop capacitance constraints of <= 30 pF/ft to prevent phase shift or attenuation of high-frequency vibration signals originating from rotating machinery shafts. During initial commissioning, static gap voltage validation targets a nominal -10 VDC output when the probe tip is positioned at standard standoff distances from the target rotor surface. The multi-conductor shielded construction suppresses electromagnetic interference (EMI) and cross-talk across adjacent signal paths, preserving raw dynamic displacement and shaft vibration telemetry fed directly into monitor racks.

Frequently Asked Questions

Q: What are the primary impedance and voltage rating constraints for this interconnect cable?

A: The cable features a characteristic impedance of 100 Ohm plus/minus 10 percent and a maximum voltage rating of 300 VAC/VDC.

Q: How does the twisted pair construction affect signal integrity in high-noise environments?

A: The three twisted pairs (six total conductors) combined with overall shielding mitigate electromagnetic interference and maintain low pair-to-pair capacitance of <= 30 pF/ft over extended runs.

Q: What is the specified operating temperature range for the cable insulation and jacketing?

A: The hardware is rated to function continuously within a temperature range spanning from -40 deg C to +120 deg C.

Field Installation Guidelines

• Route the interconnect cable away from high-voltage power conduits, variable frequency drives, and heavy inductive loads to minimize electromagnetic coupling.
• Ensure proper mechanical strain relief at both the proximity probe connector and the monitor input termination points to avoid connector pin fatigue.
• Verify that cable bend radii adhere to manufacturer minimum specifications during routing inside machinery enclosures and conduit trays.
• Ground the cable shield exclusively at the designated system termination panel to prevent ground loops and preserve common-mode noise rejection.