Description
Overview
The Bently Nevada 21747‑085‑01 extension cable is designed for use within the 3300 XL Proximity Transducer System, providing stable signal transmission between proximity probes and Proximitor sensors. Its construction supports long‑distance routing in industrial environments while maintaining signal integrity required for accurate vibration and position measurements.
Key Characteristics
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85‑ft (25.9‑m) shielded extension cable
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Designed for eddy‑current proximity probe systems
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High‑temperature and high‑voltage tolerance
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Fully compatible with 3300 XL and legacy 3300 5 mm / 8 mm components
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Copper‑braid shielding for noise reduction
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Suitable for harsh industrial environments
Technical Specifications
| Parameter |
Specification |
| Model / Part Number |
21747‑085‑01 |
| Cable Type |
Proximitor Probe Extension Cable |
| Length |
85 ft (25.9 m) |
| Voltage Rating |
300 V AC/DC |
| Capacitance |
≤95 pF/m (≤29 pF/ft) |
| Minimum Bend Radius |
75 mm (3 in) |
| Shielding |
95% copper braid |
| Temperature Range |
−40°C to +150°C (−40°F to 302°F) |
| Weight |
0.08 kg |
| Dimensions |
112 × 1.5 × 1.2 cm |
| System Compatibility |
3300 XL Proximity Transducer System |
| Interchangeability |
Compatible with non‑XL 3300 5 mm / 8 mm systems |
| Condition |
Brand New |
| Origin |
USA |
| MOQ |
1 |
| HS Code |
8537101190 |
Functional Description
The 21747‑085‑01 extension cable is engineered to maintain the electrical characteristics required for accurate eddy‑current displacement measurements. Its low capacitance and high shielding efficiency ensure minimal signal degradation over long distances, making it suitable for installations where probes must be routed through complex machinery layouts.
The cable’s copper‑braid shielding minimizes electromagnetic interference, while its wide temperature tolerance supports operation near hot process equipment. Although the 3300 XL Proximitor Sensor uses updated packaging, this cable retains the same mounting footprint and routing requirements as earlier 3300 systems, provided the minimum bend radius is maintained.
Application Scenarios
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Turbines and compressors
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Pumps and industrial fans
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Gearboxes and generators
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Machinery requiring long‑distance probe‑to‑sensor routing
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API 670‑compliant vibration monitoring systems
FAQ
Q: Can this cable be used with older 3300 proximity probes? A: Yes. The cable is electrically and mechanically compatible with non‑XL 3300 5 mm and 8 mm components.
Q: Does cable length affect calibration? A: No. The 3300 XL system is designed for component interchangeability, provided the probe, extension cable, and Proximitor sensor are matched by length.
Q: Is the shielding adequate for high‑noise environments? A: The 95% copper‑braid shield provides strong EMI protection suitable for heavy industrial settings.
