Bently Nevada 16925-26 Interconnect Extension Cable Product Specification
16925-26 is an original factory customized shielded coaxial extension interconnect cable manufactured by Bently Nevada USA, specially engineered for signal transmission matching with 3300XL, 7200 series eddy current proximity probe assemblies and related preamplifier modules in industrial rotating machinery online vibration monitoring system. With fixed nominal overall length of 26 feet (approximately 7.92 meters), this cable serves as the standard intermediate connecting medium between proximity displacement probes and matching proximitor monitor modules or FieldMonitor series signal acquisition cards, widely deployed on steam turbines, centrifugal compressors, boiler feed pumps and large induced draft fans within thermal power, petrochemical, coal chemical and metallurgical industries to transmit low-level alternating vibration signals without distortion, supporting system compliance with API670 mechanical protection standard and hazardous area installation certification requirements of ATEX and CSA Class I Division 2 sites. The cable is factory pre-terminated with standardized dedicated connectors at both ends to eliminate on-site cutting, stripping and wiring errors and guarantee original factory calibrated electrical performance of the complete transducer measurement loop.
Description
Bently Nevada 16925-26 Interconnect Extension Cable Product Specification
1. Product Overview
16925-26 is an original factory customized shielded coaxial extension interconnect cable manufactured by Bently Nevada USA, specially engineered for signal transmission matching with 3300XL, 7200 series eddy current proximity probe assemblies and related preamplifier modules in industrial rotating machinery online vibration monitoring system. With fixed nominal overall length of 26 feet (approximately 7.92 meters), this cable serves as the standard intermediate connecting medium between proximity displacement probes and matching proximitor monitor modules or FieldMonitor series signal acquisition cards, widely deployed on steam turbines, centrifugal compressors, boiler feed pumps and large induced draft fans within thermal power, petrochemical, coal chemical and metallurgical industries to transmit low-level alternating vibration signals without distortion, supporting system compliance with API670 mechanical protection standard and hazardous area installation certification requirements of ATEX and CSA Class I Division 2 sites. The cable is factory pre-terminated with standardized dedicated connectors at both ends to eliminate on-site cutting, stripping and wiring errors and guarantee original factory calibrated electrical performance of the complete transducer measurement loop.
2. Core Structural & Electrical Design Features
2.1 Multi-layer High-performance Shielded Cable Construction
The cable adopts double-layer shielding structure consisting of inner aluminum foil full wrapping plus outer high-density braided copper mesh shielding with over 85% weaving coverage rate, which effectively isolates external electromagnetic interference generated from on-site high-power frequency converters, high-current power cables and motor startup surge noise to prevent signal distortion and measurement drift during long-distance signal delivery. The inner core applies 20 AWG tinned solid copper conductor with stable conductive property, wrapped with high-temperature resistant PFAS insulating material featuring low dielectric constant and low capacitance characteristics to restrict distributed capacitance parameter strictly within ≤18pF per foot (60pF per meter), while nominal characteristic impedance is fixed at 50Ω with tolerance within ±3% to match inherent impedance of Bently original proximity probe and preamplifier perfectly for consistent signal impedance matching throughout the entire measurement circuit. Outer jacket is made of high-strength oil-resistant and chemical-resistant composite polymer material with outstanding resistance against industrial oil mist, weak acid liquid splash and mechanical abrasion under harsh field cabinet and equipment foundation installation environment.
2.2 Preassembled Standard Termination Configuration
Both terminals of 16925-26 are factory precision crimped with original dedicated metal connectors following Bently standard wiring specification; one end is designed for direct locking connection with proximity probe plug terminal, and the opposite end is matched to interface of preamplifier or monitor module terminal base without extra intermediate adapter conversion. All connector joints are subjected to sealed waterproof and anti-corrosion treatment to avoid moisture intrusion leading to intermittent open circuit or unstable signal contact under high humidity and condensation-prone industrial working conditions. Every finished cable undergoes full continuity test, insulation resistance inspection and impedance verification before factory delivery to ensure no hidden wiring short or partial breakage inside conductor core.
2.3 Stable Electrical Rating for Industrial Working Condition
Rated working voltage of the cable is defined as 300V AC/DC to adapt normal power fluctuation and instantaneous surge voltage interference of industrial field control loops. The whole cable assembly is designed with excellent anti-high-frequency signal attenuation performance, which can maintain complete original waveform of low-amplitude eddy current vibration signal from proximity transducer and avoid amplitude attenuation and phase offset that would cause inaccurate vibration or gap measurement values of rotating shaft. It supports series matching extension with other same-series 16925 specification interconnect cables under reasonable total length control for on-site long-distance wiring layout demands.
3. Environmental and Mechanical Performance Parameters
Certified continuous operating ambient temperature range for cable service is from -40℃ up to +120℃, and spare storage temperature covers -45℃ ~ +130℃ to satisfy high-temperature environment near equipment bearing housing and low-temperature outdoor cold storage condition requirements. The finished cable structure passes repeated bending fatigue test and mechanical vibration test of 10Hz~2000Hz, allowing flexible laying around equipment pipelines and compact cabinet internal wiring without inner core conductor fracture or shielding layer damage caused by long-term equipment vibration. The complete finished product net weight is around 0.5kg per piece, with coiled factory packaging to facilitate transportation and on-site storage without excessive bending deformation beyond allowable bending radius during handling.
4. System Matching and Field Installation Specification
16925-26 must be matched with genuine Bently original proximity probes, preamplifiers and monitor modules including 3300 series rack monitor and FieldMonitor 1701/15 proximity input module; non-original third-party mismatched probes or replacement cables will change overall circuit impedance and capacitance parameters of the measurement loop, resulting in measuring precision deviation and unexpected protection false action of monitoring system. During field installation, cable laying should be separated from high-voltage power cable routing with certain safety spacing to minimize cross electromagnetic coupling interference; when multiple cables are arranged in same cable trough, single-point grounding of the outer shielding layer is required following Bently standard grounding specification to optimize anti-interference effect. Avoid sharp-angle extrusion, excessive stretching and open flame baking of cable outer jacket during construction to prevent insulation layer breakdown damage.
5. Quality Assurance and Warranty Terms
All 16925-26 finished interconnect cables complete strict factory electrical performance testing, high-low temperature alternating cycle aging test and full-length impedance screening before outgoing from factory to guarantee consistent product performance of each batch. Standard warranty period of brand-new original authentic product is 12 months calculated from formal delivery date; within valid warranty period, manufacturer provides free replacement service for product failures induced by inherent manufacturing defects under specified normal installation and operating environment, while damage generated from artificial cutting, improper wiring, mechanical pulling destruction and chemical corrosion is not included within free warranty coverage scope.
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