Bently Nevada 330190-075-01-CN 3300 XL ETR Extension Cable

The Bently Nevada 330190-075-01-CN is an Extended Temperature Range (ETR) extension cable for the 3300 XL proximity system. Manufactured in the U.S.A., this cable features rugged armored construction for enhanced mechanical protection. With a length of 7.5 meters (24.6 feet), it provides flexible installation options for machinery monitoring. Country specific agency approvals (option CN) make this cable suitable for installations requiring local regulatory compliance.

Technical Specifications of the 330190-075-01-CN

Cable Configuration

Turning first to the cable configuration, the Bently Nevada 330190-075-01-CN includes a 7.5 meter (24.6 feet) length. The cable option (01) specifies armored construction for superior mechanical protection against crushing and abrasion. Agency approval option (CN) indicates country specific approvals, which vary by destination. The minimum cable bend radius is 25.4 mm (1.0 inch), a critical dimension that must be observed during installation.

Electrical Specifications

Regarding electrical characteristics, the Bently Nevada 330190-075-01-CN uses 75Ω triaxial construction. For extended temperature range applications, the insulation material is perfluoroalkoxy (PFA). Nominal core resistance (RCORE) from center conductor to center conductor measures 1.65 ± 0.25 Ω. Outer conductor resistance (RJACKET) measures 0.49 ± 0.10 Ω. Extension cable capacitance is 69.9 pF/m (21.3 pF/ft) typical, ensuring consistent signal transmission.

Temperature Range

The extended temperature range cable operates from -52°C to +260°C (-62°F to +500°F). This represents a significant improvement over standard cable, which only reaches +177°C. Consequently, the Bently Nevada 330190-075-01-CN is ideal for high-temperature machinery applications such as gas turbines, steam turbines, and compressors.

Connector and Torque Specifications

Connector material is gold-plated brass or gold-plated beryllium copper, ensuring excellent corrosion resistance and signal integrity. The maximum connector torque is 0.565 N•m (5 in•lbf). Hand-tightening is strongly recommended; exceeding this torque value may damage the connector.

Weight

The armored extension cable weighs 103 g/m (1.5 oz/ft). For this 7.5 meter cable, the total weight is approximately 0.77 kg. By comparison, non-armored cable weighs only 34 g/m.

Field Wiring and System Integration

Field Wiring Recommendations

For field wiring, use 0.2 to 1.5 mm² (16 to 24 AWG) conductors. Three-conductor shielded triad cable with tinned field wiring is strongly recommended for optimal noise immunity. The maximum length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). For high-frequency applications, consult the frequency response graphs (Figures 10 and 12) for signal rolloff information when using longer field wiring lengths.

Linear Range and Gap Setting

The linear range is 2 mm (80 mils). This linear range begins at approximately 0.25 mm (10 mils) from the target. The full range extends from 0.25 to 2.3 mm (10 to 90 mils), corresponding to approximately -1 to -17 Vdc. The recommended gap setting for radial vibration measurements is -9 Vdc, which translates to approximately 1.27 mm (50 mils).

Compatibility and Compliance

Component Interchangeability

The Bently Nevada 330190-075-01-CN is both electrically and physically interchangeable with non-XL 3300 5 mm and 8 mm components. This interchangeability applies when the minimum permissible cable bend radius (25.4 mm / 1.0 in) is observed. Consequently, system upgrades and replacements are straightforward.

FCC Compliance

This device complies with part 15 of the FCC Rules. Operation is subject to two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

EMC and RoHS Compliance

For electromagnetic compatibility, the device complies with European Community Directive 2014/30/EU. Applicable standards include EN 61000-6-2 (Immunity for Industrial Environments) and EN 61000-6-4 (Emissions for Industrial Environments). For RoHS compliance, it meets Directive 2011/65/EU, restricting hazardous substances.

Maritime Compliance

Maritime compliance includes 2019 Rules for Conditions of Classification, Part 1, 1-1-1/7.7, 1-1-A3, and 1-1-A4. Additionally, for offshore units and structures, it complies with 1-1-4/9.7, 1-1-A2, and 1-1-A3. Therefore, this cable is suitable for marine and offshore applications.

Functional Safety Certification

The Bently Nevada 330190-075-01-CN carries important functional safety ratings. For SIL 2 applications, the Hardware Fault Tolerance (HFT) is 0. For SIL 3 applications, the HFT is 1. Consequently, this extension cable is suitable for safety-critical machinery protection systems requiring high reliability.

Installation Guidelines for the 330190-075-01-CN

First, route the Bently Nevada 330190-075-01-CN away from high-voltage power cables to minimize electromagnetic noise pickup. Observe the minimum bend radius of 25.4 mm (1.0 inch) to avoid damaging the internal conductors. Then, connect the extension cable between the 3300 XL Proximitor Sensor and the monitor. Hand-tighten the connectors to a maximum torque of 0.565 N•m (5 in•lbf). For armored cable installations, ensure the armor is properly grounded at one end only to avoid ground loops. Finally, verify the system gap setting at -9 Vdc (approximately 1.27 mm / 50 mils) for radial vibration measurements.

Package Contents

• One (1) Bently Nevada 330190-075-01-CN 3300 XL ETR extension cable (7.5 meters / 24.6 feet)

• Armored construction with gold-plated connectors

• Country specific agency approvals (option CN)

• Installation and handling instructions

Common FAQs for the 330190-075-01-CN

1. What is the temperature range of this ETR extension cable?
The Bently Nevada 330190-075-01-CN operates from -52°C to +260°C (-62°F to +500°F). The PFA insulation enables this extended range, making it suitable for high-temperature machinery.

2. Is this cable armored?
Yes, the Bently Nevada 330190-075-01-CN features armored construction (cable option 01). This provides enhanced mechanical protection against crushing and abrasion in harsh industrial environments.

3. What are the country specific approvals (CN) for this cable?
The CN option indicates that the Bently Nevada 330190-075-01-CN meets country specific approval requirements. Please contact your local representative for details on which countries are covered.

4. What is the minimum bend radius for this armored cable?
The minimum bend radius is 25.4 mm (1.0 inch). This must be carefully observed during installation to avoid damaging the cable.

5. What functional safety ratings does this cable carry?
The Bently Nevada 330190-075-01-CN is rated for SIL 2 (HFT=0) and SIL 3 (HFT=1) applications. Consequently, it is suitable for safety-critical machinery protection systems.

Why Choose the Bently Nevada 330190-075-01-CN?

In summary, this 3300 XL ETR extension cable delivers reliable proximity probe extension for high-temperature machinery monitoring with country specific approvals. First, the PFA insulation enables operation at extreme temperatures up to +260°C, far exceeding standard cable capabilities. Second, the armored construction provides superior mechanical protection against crushing and abrasion in harsh industrial environments. Third, the SIL 2 and SIL 3 functional safety ratings make this cable suitable for critical machinery protection systems. Fourth, the country specific approvals (option CN) ensure compliance with local regulatory requirements. Fifth, interchangeability with non-XL 3300 components simplifies system upgrades and replacements. Consequently, order the Bently Nevada 330190-075-01-CN today for your high-temperature extension cable requirements with country specific approvals.