The Bently Nevada 330730-040-00-00 belongs to the trusted 3300 XL series of proximity probe systems. This high-performance extension cable measures 4.0 meters (13.1 feet) in length. It serves as a critical link between the 3300 XL 11 mm probe and the Proximitor Sensor. Therefore, it plays a vital role in vibration monitoring and machinery protection applications.
This model features the standard cable and connector option (00 code). Additionally, it does not require any specific agency approval (00 code). The cable construction uses a 75 Ω triaxial design with fluoroethylene propylene (FEP) insulation. Consequently, it provides excellent dielectric strength and chemical resistance. Its gold-plated brass connectors ensure minimal signal loss and reliable contact over many connection cycles.
Furthermore, the 330730-040-00-00 offers a typical capacitance of 69.9 pF/m (21.3 pF/ft). This low capacitance preserves signal integrity over the entire 4.0-meter length. The cable's DC resistance from center conductor to center conductor (RCORE) is 1.0 ± 0.25 ohms. Meanwhile, the resistance from coaxial conductor to coaxial conductor (RJACKET) is only 0.3 ± 0.1 ohms. These precise electrical characteristics guarantee accurate measurements.
The 3300 XL 11 mm extension cable delivers outstanding performance in demanding environments. Its operating and storage temperature range spans from -51°C to +177°C (-60°F to +351°F). This wide range makes it suitable for turbine, compressor, and pump applications. The cable's tensile strength reaches 330 N (75 pounds) from probe case to lead. Moreover, it withstands 270 N (60 pounds) at the connector junction.
For field wiring, this extension cable accepts conductors from 0.2 to 1.5 mm² (16 to 24 AWG). We recommend using a three-conductor shielded triad cable for optimal noise rejection. The maximum field wiring length between the Proximitor Sensor and the monitor is 305 meters (1,000 feet). However, you should check the frequency response graph for signal rolloff at extended lengths.
The system length options include 5 or 9 meters total when combined with the probe and extension cable. This particular model, the 330730-040-00-00, provides the 4.0-meter segment. When used with the 3300 XL probe, the linear range covers 4.0 mm (160 mils). The linear range starts at approximately 0.5 mm (20 mils) from the target. It extends from 0.5 to 4.5 mm (20 to 180 mils), corresponding to -1 to -17 Vdc. The recommended gap setting is 2.5 mm (100 mils) for optimal performance.
This extension cable offers an optional flexible AISI 302 SST armor with an FEP outer jacket. The armored version weighs 140 g/m (1.5 oz/ft), totaling 0.56 kg for the 4.0-meter length. In contrast, the unarmored cable weighs only 45 g/m (0.5 oz/ft) or 0.18 kg total. Therefore, you can choose the armored option for extra mechanical protection in harsh environments.
Additionally, Bently Nevada provides a FluidLoc cable option for this series. This feature prevents oil and other liquids from leaking out of the machine through the cable's interior. The connector protector option also offers additional protection in humid or moist conditions. We strongly recommend connector protectors for all installations to increase environmental protection. Meanwhile, silicone tape is included with each extension cable as an alternative. However, do not use silicone tape in turbine oil applications where the connection will be exposed.
The 3300 XL 11 mm probe comes standard with a locknut featuring pre-drilled safety wire holes. This design ensures secure mounting and prevents loosening due to vibration. The connector material is gold-plated brass, which resists oxidation and maintains low contact resistance. For armored versions, the FEP outer jacket provides excellent chemical and abrasion resistance.
Proper installation of the Bently Nevada 330730-040-00-00 ensures accurate and reliable measurements. First, verify that the cable length matches your system requirements. This 4.0-meter cable works within 5 or 9-meter total system lengths. Next, connect the cable securely to both the probe and the Proximitor Sensor. Ensure the connectors are fully engaged and the locknut is tightened properly.
For optimal performance, maintain the recommended gap setting of 2.5 mm (100 mils) between the probe tip and the target surface. Use the incremental scale factor (ISF) of 3.94 V/mm (100 mV/mil) for calibration. This ISF includes a ±10% interchangeability error when measured in 0.5 mm (20 mil) increments. Remember that the extended DSL range (0.5 to 5.0 mm / -1 to -19 Vdc) does not apply when using zener barriers.
When routing the cable, avoid sharp bends or excessive strain. The tensile strength limits are 330 N for the probe case and 270 N for the connectors. Use appropriate cable ties and supports to relieve stress on the connectors. If you operate in a humid environment, install the connector protectors for added moisture resistance. For armored cables, ensure the armor does not contact live electrical parts.
Your order for the 330730-040-00-00 includes the extension cable only, without additional mounting accessories. Each unit is individually packaged to prevent damage during transit. We ship exclusively via FedEx, UPS, or DHL to ensure fast and reliable delivery. All shipments are fully trackable and insured for your peace of mind.
The gross weight for the armored version is 0.56 kg. For the unarmored version, the weight is 0.18 kg. Please confirm your desired version when placing your order. Our team carefully inspects every cable before shipment to guarantee quality.
Q1: What is the total system length when using this 4.0-meter extension cable?
The 3300 XL 11 mm extension cable combines with the probe to form a total system length of either 5 or 9 meters. This specific 4.0-meter cable is typically used in the 5-meter system configuration.
Q2: Can this cable be used in high-temperature turbine applications?
Yes, the Bently Nevada 330730-040-00-00 operates reliably from -51°C to +177°C. Therefore, it suits most turbine and compressor environments. However, use connector protectors instead of silicone tape when exposed to turbine oil.
Q3: What is the difference between the armored and unarmored versions?
The armored version adds a flexible AISI 302 SST layer with an FEP outer jacket, increasing weight to 0.56 kg. This provides extra mechanical protection against abrasion and impact in harsh industrial settings.
Q4: How do I choose the correct field wiring for this extension cable?
Use a three-conductor shielded triad cable with 0.2 to 1.5 mm² (16 to 24 AWG) conductors. The maximum field wiring length is 305 meters (1,000 feet) between the Proximitor Sensor and the monitor.
Q5: Is this cable compatible with the 3300 XL Proximitor Sensor?
Absolutely. The 3300 XL 11 mm extension cable is specifically designed for the 3300 XL series Proximitor Sensors. It ensures proper impedance matching and signal integrity for accurate vibration monitoring.
| Brand Name | |
| Model No. | 330730-040-00-00 |
| Product Type | Extension Cable |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
