3300 XL Standard Extension Cable Technical Guide and Installation Tips
Product Introduction
The Bently Nevada 330130-075-11-05 is a standard extension cable from the 3300 XL series. It forms part of an eddy current proximity transducer system. Specifically, this 7.5-meter cable connects the 8 mm probe to the Proximitor sensor. This system measures shaft vibration and displacement in critical rotating machinery. The 330130-075-11-05 features an armored FluidLoc design. This construction prevents oil and other liquids from leaking through the cable interior. Moreover, its patented TipLoc and CableLoc technologies ensure a robust bond and secure connections. The cable meets the API 670 standard, guaranteeing reliable performance in demanding applications.
Core Value
The primary value of the Bently Nevada 330130-075-11-05 lies in its reliability. It ensures high-fidelity signal transmission in harsh industrial environments. The FluidLoc cable option is a key advantage. It prevents fluid leaks, which protects the machine and the monitoring system. In addition, the 3300 XL system supports full component interchangeability. You can replace the probe, extension cable, or Proximitor sensor without needing to recalibrate the entire system. This feature significantly reduces downtime and maintenance costs. Furthermore, the cable's approvals—CSA, ATEX, and IECEx—suit it for use in hazardous areas.
Technical Insights
The Bently Nevada 330130-075-11-05 has specific electrical and physical parameters. Understanding these ensures proper system operation. The suffix "075" specifies a 7.5-meter (24.6 feet) cable length. The "11" suffix indicates the armored FluidLoc cable type. Meanwhile, "05" denotes the agency approvals: CSA, ATEX, and IECEx. The cable's core resistance (RCORE) is 1.65 ± 0.25 Ω. Its jacket resistance (RJACKET) is 0.49 ± 0.10 Ω. The extension cable capacitance is 69.9 pF/m. The system requires a power supply between -17.5 Vdc and -26 Vdc. Additionally, the cable has a minimum bend radius of 25.4 mm (1.00 in). This specification is critical to avoid damaging the internal conductors and armor.
Installation & Maintenance
Proper installation of the 330130-075-11-05 is vital for accurate measurements. Follow these key guidelines. Firstly, ensure the total length of the probe and extension cable matches the Proximitor's specified length. For example, a 0.5-meter probe paired with this 7.5-meter cable requires an 8-meter Proximitor sensor. Secondly, avoid sharp bends. Maintain a bending radius greater than 25.4 mm to protect the cable. Thirdly, protect the connectors after mating. Use heat-shrink tubing or a dedicated connector protector kit. This step prevents moisture and oil contamination. Fourthly, the stainless steel armor provides mechanical protection. It should remain floating and not be grounded. This practice prevents ground loop noise from corrupting the signal. During maintenance, regularly inspect the cable for cuts, crushing, or oil damage. Also, check the connector for corrosion. Store spare O-rings for the mounting adapter.
Buyer's Guide FAQ
Q1: What is the maximum length for the 330130-075-11-05 system?
A: The maximum total field wiring length between the sensor and the monitor is 305 meters (1,000 feet).
Q2: How do I set the gap for the 330130-075-11-05?
A: For radial vibration, use a -9 Vdc gap setting. This is approximately 1.27 mm (50 mils) from the target.
Q3: What are the approvals for the Bently Nevada 330130-075-11-05?
A: This cable has CSA, ATEX, and IECEx approvals for use in hazardous areas.
Q4: Does the armor need to be grounded?
A: No, the stainless steel armor is for physical protection only. Keep it floating to avoid signal interference from ground loops.
Q5: Can I use silicone tape with this cable?
A: Bently Nevada does not recommend using silicone tape in applications exposed to turbine oil. Use the provided connector protectors instead.
