Bently Nevada 330930-060-10-00 NSv Extension Cable

Product Introduction

The 330930-060-10-00 is a premium extension cable from Bently Nevada's 3300 NSv series, engineered to connect the 3300 NSv proximity probe to the Proximitor Sensor. This cable distinguishes itself through its FluidLoc connector system, which provides enhanced environmental sealing against moisture and contaminants. Its 6.0-meter length offers flexible system layout options, while the stainless steel armor delivers robust protection against mechanical damage. Furthermore, the FEP jacket ensures excellent dielectric properties and resistance to high temperatures and chemicals. For these reasons, this extension cable is an ideal choice for critical turbomachinery monitoring installations where reliability and signal integrity are paramount.

Technical Specifications

Cable Configuration

The 330930-060-10-00 model offers a specific combination of length and connector features. The cable length option is 060, providing 6.0 metres (19.7 feet) of total extension. Additionally, the connector and cable option is 10, which indicates the inclusion of FluidLoc cable with stainless steel armor, an FEP jacket, and a connector protector. The FluidLoc system uses gold-plated brass connectors designed to resist fluid ingress, making this cable particularly suitable for environments with oil, moisture, or chemical exposure.

Electrical Properties

This extension cable maintains the high-quality electrical characteristics expected from Bently Nevada. It features a 75 Ω coaxial design with fluoroethylene propylene (FEP) insulation throughout. The DC resistance specifications are precisely defined: the center conductor measures 0.220 Ω/m (0.067 Ω/ft) , while the shield measures 0.066 Ω/m (0.020 Ω/ft) . Moreover, the typical capacitance is 69.9 pF/m (21.3 pF/ft) . These carefully controlled parameters ensure minimal signal attenuation and distortion across the full cable length.

Mechanical and Material Specifications

The 3300 NSv Extension Cable incorporates several robust materials. The optional stainless steel armor is constructed from flexible AISI 302 SST, which provides excellent corrosion resistance and physical protection. The connector material is gold-plated brass, ensuring superior conductivity and resistance to oxidation. The maximum rated tensile strength is 220 N (50 lb) , applying uniformly across the probe case-to-probe lead, the probe lead-to-extension cable connectors, and the probe case-to-armor connections. This high rating allows the cable to withstand significant pulling forces during installation.

Temperature Classification and Environmental Limits

Operating Temperature Range

The 330930-060-10-00 operates reliably across an exceptionally wide temperature range. Its standard operating and storage temperature span is -52°C to +177°C (-62°F to +351°F) . This broad range accommodates most industrial environments, from cold outdoor installations to high-temperature turbine compartments. However, for applications requiring specific temperature classifications, this cable supports multiple EPL (Equipment Protection Level) ratings.

System Integration and Compatibility

Length Calculation Requirement

A critical installation rule governs the use of this extension cable. Specifically, the total length of the extension cable plus the probe length must equal the Proximitor Sensor's specified total length. For the 330930-060-10-00, adding its 6.0 metres to the probe's length is mandatory for proper system calibration. The system length is available in 5 or 7 meters including the extension cable. Therefore, verify your probe's length carefully before finalizing your order to ensure compatibility with your Proximitor Sensor.

Field Wiring Parameters

For field wiring between the Proximitor Sensor and the monitor, several parameters are important. The recommended conductor size is 0.2 to 1.5 mm² (16 to 24 AWG) , or 0.25 to 0.75 mm² (18 to 23 AWG) when using ferrules. A three-conductor shielded triad cable is strongly recommended for optimal noise rejection and signal integrity. The maximum allowable field wiring length is 305 meters (1,000 feet) . However, users should consult the frequency response graphs for signal rolloff information at high frequencies when using longer field wiring runs.

Linear Range and Recommended Gap

Measurement Characteristics

The 3300 NSv system offers a well-defined linear range for accurate measurements. The linear range extends to 1.5 mm (60 mils) . This range begins at approximately 0.25 mm (10 mils) from the target and continues to 1.75 mm (10 to 70 mils) . This range corresponds to an output voltage of approximately -1 to -13 Vdc . This wide and linear measurement window allows for accurate monitoring across typical operating gaps.

Recommended Gap Setting

For optimal performance, the recommended gap setting is 1.0 mm (40 mils) . Setting the target at this distance ensures the system operates within the most linear portion of its response curve. Consequently, this provides the most accurate and stable readings for vibration, displacement, and position monitoring. Always set the initial gap according to this recommendation during the installation process.

Installation Guidelines

Step 1: Pre-Installation Inspection

Begin by carefully inspecting the 330930-060-10-00 cable. First, examine the FluidLoc connectors for any signs of damage, corrosion, or contamination. Next, inspect the stainless steel armor and FEP jacket for any cuts, kinks, or abrasions. Finally, verify that the cable length of 6.0 metres matches your system's requirements and that the connector protector is intact.

Step 2: Length Verification

Before proceeding with installation, perform the critical length calculation. Add your probe's length to the 6.0 metres of this extension cable. This sum must equal the Proximitor Sensor's specified total length. If the numbers do not match, the system will not be calibrated correctly. Therefore, double-check all specifications against your sensor documentation.

Step 3: Connecting the Cable

Connect the extension cable securely to both the probe and the Proximitor Sensor. The FluidLoc system provides enhanced sealing when properly mated. Ensure the gold-plated brass connectors are fully engaged and tightened to the recommended torque. A secure connection is essential for maintaining signal integrity and preventing ingress of moisture or contaminants.

Step 4: Cable Routing and Protection

Route the armored cable to the sensor location with care. Avoid sharp bends that could kink the armor or damage the internal conductor. Secure the cable with appropriate clamps or ties, ensuring it is not under tension. Furthermore, keep the cable away from high-temperature surfaces, moving parts, and sources of strong electromagnetic interference. Proper routing will significantly extend the cable's service life and maintain measurement accuracy.

Packaging List

The standard shipment for this product includes:

1. 330930-060-10-00 Bently Nevada 3300 NSv Extension Cable (6.0 metres, 1 Unit)

2. FluidLoc Connector with Protector (Pre-installed)

3. Protective Caps for Connectors

Note: The shipment does not include any additional mounting hardware, adapters, probes, or accessories beyond what is listed above.

Frequently Asked Questions (FAQ)

Q1: What is the FluidLoc feature on the 330930-060-10-00?
A1: FluidLoc is a specialized connector system on the 330930-060-10-00 that provides enhanced environmental sealing. It protects against moisture, oil, and chemical ingress, making this extension cable ideal for harsh industrial environments with fluid exposure.

Q2: How do I determine if this 6.0-meter cable length is correct for my system?
A2: Add the length of your 3300 NSv probe to the 6.0 metres of this extension cable. This sum must equal the Proximitor Sensor's specified total length, which is available in either 5 or 7 meters. Verify this calculation before installation.

Q3: What is the tensile strength rating for this 330930 cable?
A3: The maximum rated tensile strength for the 330930-060-10-00 is 220 N (50 lb) . This rating applies uniformly across the probe case-to-probe lead, the probe lead-to-extension cable connectors, and the probe case-to-armor connections.

Q4: What temperature classifications are supported by this extension cable?
A4: This 3300 NSv cable supports multiple EPL temperature classifications. For gas applications (EPL Ga/Gc), it ranges from T1 (-55°C to +232°C) to T5 (-55°C to +40°C). For dust applications (EPL Dc), it ranges from T280°C (-55°C to +232°C) to T90°C (-55°C to +40°C). Choose the classification matching your hazard zone.

Q5: What is the recommended gap setting for the 3300 NSv system using this cable?
A5: The recommended gap setting is 1.0 mm (40 mils) . This setting ensures operation within the most linear portion of the measurement range, which spans from 0.25 mm to 1.75 mm (10 to 70 mils) corresponding to -1 to -13 Vdc output.