Description
1. Unboxing & Physical Snapshot
- Model & Brand: Bently Nevada (Baker Hughes / General Electric Machinery Condition Monitoring Family) — Proximitor Probe Extension Cable — Part Number: 21747-040-01
- Physical Dimensions: 4.00-meter length coaxial cable assembly equipped with high-frequency coaxial connectors and flexible stainless steel armor casing (Net weight: ~0.35 kg to 0.50 kg)
- Estimated Shipping Weight: Approximately 0.90 kg net (Packaged securely in multi-layer anti-static containment, custom high-density molded protective foam, and heavy corrugated industrial export cartoning)
- What’s in the Box: Bently Nevada 21747-040-01 extension cable assembly, protective connector caps, insulating sleeve markers, and manufacturer compliance/conformance documentation.
2. Product Introduction
Structure B (Architecture hook): Engineered for critical rotating machinery protection, vibration analysis, and industrial turbo-machinery monitoring, the Bently Nevada 21747-040-01 functions as a high-precision Proximitor probe extension cable within the 7200 series transducer ecosystem. Designed to interconnect proximity probes and Proximitor sensors over a reliable 4-meter span, this assembly maintains exact electrical impedance characteristics to ensure drift-free, non-contacting gap-to-voltage signal transmission for radial vibration and axial position measurements.
Housed in a rugged, flexible stainless steel armor jacket built to withstand severe plant conditions, mechanical abrasion, and heavy oil exposure, the internal coaxial construction ensures complete shielding against electromagnetic interference (EMI) in high-noise industrial environments.
3. Core Technical Specifications
| Parameter | Value |
| Component Type | Proximitor Probe Extension Cable Assembly |
| Product Family | Bently Nevada 7200 Series Proximity Transducer Systems |
| Part Number Designation | 21747-040-01 |
Cable Length Option (-040) |
4.00 metres (157 inches) |
Armor Option (-01) |
With flexible stainless steel protective armor jacket |
| System Compatibility | Interoperable with 7200 series 5 mm and 8 mm probes and Proximitor monitors |
| Electrical Impedance | Matched coaxial characteristic impedance for precision signal integrity |
| Connector Type | High-frequency threaded coaxial connectors with insulating boots |
| Operating Temperature Range | -51°C to +177°C continuous industrial threshold (cable assembly) |
| Storage Temperature Range | -51°C to +105°C |
| Enclosure Protection Class | IP68 hermetically sealed when correctly mated and booted |
| Physical Net Weight | Approximately 0.35 kg to 0.50 kg |
4. Global Compliance & Industry Certifications
Type-test verification and strict electrical performance standards compliance are mandatory for sensor cabling deployed on critical machinery loops.
- Expected Certifications: Designed to comply with API 670 (4th Edition) standards for mechanical configuration, electrical linearity, and temperature stability; CE Mark and RoHS material declarations.
- Safety Relevance: Continuous metallic armor grounding and shielded coaxial design prevent external transient voltage induction and electromagnetic noise coupling into safety-instrumented protection loops.
- Audit Note: Verify that total system length configurations (probe lead length plus extension cable length matching the Proximitor sensor calibration) comply with system specifications prior to installation.
5. Long-Term Storage & Asset Preservation Guide
Veteran Maintenance Note: Storing precision coaxial extension cables requires strict mechanical protection to prevent crushing forces or sharp bends from altering the internal characteristic impedance of the line.
- Moisture & Physical Protection: Keep the cable assembly sealed inside its original anti-static moisture-barrier packaging with connector thread caps securely attached.
- Climate Baseline: Store the inventory in a clean, dry location maintaining relative humidity strictly below 50% non-condensing, and ambient storage temperatures between -20°C and +40°C.
- Mechanical Care: Coil the cable loosely adhering to the manufacturer’s minimum bend radius requirements; never kink the stainless steel armor or crush connectors under heavy inventory weights.
6. Physical Installation Prerequisites
- Ensure that machinery monitoring racks and associated power supplies are safely isolated or de-energized before connecting or disconnecting sensor wiring.
- Inspect coaxial connector pins and threads for cleanliness, ensuring no moisture, oil, or debris is trapped inside the connector barrels before mating.
- Finger-tighten the coaxial connectors carefully to ensure proper electrical contact, then secure with appropriate tools if specified, sliding the protective insulating boot over the joint to prevent short circuits against machine casing grounds.
7. Buyer’s FAQ (Logistics & Compliance Focus)
- What Harmonized System (HS) code governs international customs clearance?The standard global export classification for this industrial sensor cable is 8544.42.9090 (Insulated electrical conductors, fitted with connectors, for voltage not exceeding 1000V).
- How does Country of Origin (COO) verification impact spare parts tracking?Accurate origin verification on commercial shipping documents ensures compliance with international trade frameworks and plant import compliance mandates (typically United States manufacturing origin).
- Does this extension cable require individual calibration?No, components within the 7200 series transducer system are fully interchangeable and factory-calibrated as matched sets, eliminating the need for individual component bench calibration.
- What level of transit insurance should be specified?Always mandate fully declared-value, tracked international air cargo insurance to protect precision coaxial connector threads against impact damage during transit.
