Configured for electrical signal extension in Proximitor probe measurement chains within Bently Nevada eddy-current monitoring systems, the Bently Nevada 21747-080-00 (21747-080-00 Proximitor Probe Extension Cable) provides direct electrical continuity between proximity probe assemblies and monitoring interface modules.
Hardware Specifications
Parameter
Specification
Model
21747-080-00
Brand
Bently Nevada
Origin
USA
Weight
0.24 kg
Dimensions
19 x 19 x 2 cm (shipping envelope)
Operating Temp
Not specified (system dependent)
Power Consumption
Passive (no electrical consumption)
Cable Length
8.00 m (315 inches)
Armor
Non-armored construction
Function
Proximitor probe extension signal path
Eddy-Current Signal Integrity and TSI Interface Behavior
The 21747-080-00 extension cable is implemented as part of an eddy-current displacement measurement chain where probe signal scaling is maintained through controlled impedance transmission between probe and Proximitor interface. Signal integrity is dependent on maintaining calibrated gap voltage response characteristics, typically referenced against -10 VDC full-scale proximity conversion behavior in Bently Nevada monitoring architectures.
Cross-talk suppression is achieved through physical separation and shielding continuity along the extension path, ensuring rotor dynamics data integrity during high-frequency vibration sampling. The cable does not perform signal conditioning; it preserves raw probe transducer output characteristics for downstream conversion within the monitoring system.
Frequently Asked Questions (FAQ)
Q: Does the 21747-080-00 cable require firmware or configuration matching with monitoring modules? A: No firmware is embedded. Electrical compatibility is defined by impedance matching and connector standardization within Bently Nevada Proximitor systems.
Q: Can the extension cable affect gap voltage calibration in eddy-current probe loops? A: The cable itself does not alter calibration values, but excessive resistance or shielding degradation can introduce signal attenuation affecting gap voltage interpretation.
Q: Is hot-swap operation supported for this extension cable in running systems? A: Hot-swap is not defined for passive probe cabling. Disconnection during operation may interrupt proximity signal acquisition and introduce transient invalid data.
Field Installation Guidelines
Maintain continuous shield grounding from probe to monitoring input to preserve electromagnetic reference stability. Avoid routing parallel to high-voltage conductors or VFD output cabling to reduce induced noise coupling. Ensure connector torque and engagement depth are consistent with standard Bently Nevada Proximitor interface practices. Do not introduce additional splices along the 8 m signal path, as impedance discontinuities may distort eddy-current waveform fidelity.
