Introduction
The Bently Nevada 330190-040-01-05 is a 3300 XL Extended Temperature Range (ETR) Extension Cable designed to connect a compatible ETR proximity probe with its Proximitor Sensor in demanding rotating-equipment monitoring systems.
This configuration combines a 4.0 m cable length, armored construction, and CSA, ATEX, and IECEx approval option. The ETR cable uses PFA insulation and is intended for applications where the extension-cable section may encounter temperatures considerably higher than those supported by standard 3300 XL extension cables. The published ETR rating extends to approximately 260°C (500°F).
The cable is an important part of the complete 3300 XL transducer chain. For correct system performance, the probe length plus extension-cable length must correspond to the total system length specified for the Proximitor Sensor. This makes the 330190-040-01-05 particularly useful when replacing an existing ETR cable while maintaining the original system architecture.
Technical Specifications
The 330190 ordering structure makes the configuration easy to identify: 330190 designates the 3300 XL ETR Extension Cable, 040 specifies 4.0 m cable length, 01 indicates armored cable, and 05 identifies the multiple-approval configuration.
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 330190-040-01-05 |
| Product Type | 3300 XL ETR Extension Cable |
| Series | 330190 |
| Cable Length | 4.0 m (13.1 ft) |
| Cable Option | Armored |
| Approval Option | Multiple Approvals |
| Approvals | CSA, ATEX, IECEx |
| Cable Construction | 75 Ω triaxial |
| Insulation Material | PFA |
| Armor | PFA-coated armor |
| Typical Capacitance | 69.9 pF/m (21.3 pF/ft) |
| Center-to-Center Resistance at 4.0 m | 0.88 ± 0.13 Ω |
| Outer-Conductor Resistance at 4.0 m | 0.26 ± 0.05 Ω |
| Maximum Cable Diameter | Approx. 7.67 mm with armor |
| Maximum Armor Ferrule Diameter | Approx. 10.2 mm |
| Connector Type | Miniature coaxial ClickLoc |
| Connector Material | Gold-plated brass or gold-plated beryllium copper |
| Maximum Connector Torque | 0.565 N·m (5 in·lbf) |
| Minimum Cable Bend Radius | 25.4 mm (1.0 in) |
| ETR Operating/Storage Range | Up to approximately 260°C (500°F) |
| Cable Weight | Approximately 103 g/m |
| Approximate Cable Weight | 0.412 kg |
| Typical Application | High-temperature shaft vibration and position monitoring |
Applications
High-Temperature Turbine Monitoring
The 330190 ETR cable is a strong choice for turbine installations where the cable routing passes through areas exposed to elevated temperatures. Its PFA insulation and ETR construction provide additional thermal headroom compared with standard extension-cable designs.
Steam Turbines
Steam-turbine environments can place proximity-system cabling close to hot machinery surfaces. The ETR extension cable helps maintain the required signal path when ordinary cable insulation is not suitable for the installation temperature.
Gas Turbines
The cable can be used as part of a proximity transducer system monitoring shaft vibration and position on appropriately configured gas-turbine machinery.
Compressors
Critical compressors can use proximity transducers to directly monitor rotor movement. The armored ETR cable provides both thermal capability and additional mechanical protection along demanding cable routes.
Generators
The cable can form part of a shaft-monitoring channel on large generators and rotating electrical machinery where reliable signal transmission between the probe and Proximitor Sensor is essential.
Fluid-Film Bearing Machines
On machines using fluid-film bearings, proximity probes provide direct shaft measurements. The extension cable maintains the electrical connection between the probe and Proximitor while accommodating demanding installation conditions.
Hazardous-Area Installations
The -05 approval option is associated with CSA, ATEX, and IECEx approvals, making this configuration appropriate for installations where the applicable certified system configuration is required.
Advantages
Extended Temperature Capability
The most important advantage of the 330190 series is its ETR construction. The extension cable is designed for temperatures up to approximately 260°C (500°F), making it suitable for areas where standard 3300 XL extension cables would not be the preferred choice.
Armored Protection
The 01 option specifies an armored cable, providing additional mechanical protection against abrasion, impact, and harsh routing conditions.
4-Meter Reach
The 4.0 m length offers useful installation flexibility between the proximity probe and Proximitor Sensor while remaining shorter than the longer 7–9 m configurations.
PFA Insulation
PFA insulation is well suited to high-temperature environments and provides the thermal performance expected from an ETR extension cable.
Stable Signal Characteristics
The 330190 design uses a controlled 75 Ω triaxial cable, helping preserve the electrical characteristics required by the 3300 XL proximity transducer system.
Low Electrical Resistance
At the nominal 4.0 m length, the center-conductor resistance is approximately 0.88 ± 0.13 Ω, while outer-conductor resistance is approximately 0.26 ± 0.05 Ω. These values form part of the complete system's electrical characteristics.
ClickLoc Connections
The miniature coaxial ClickLoc connectors are designed for straightforward connection and secure engagement. The connector system uses corrosion-resistant gold-plated materials and does not require specialized installation tools.
Multiple Approvals
The -05 option provides CSA, ATEX, and IECEx approval capability, giving the configuration broader application potential where these certifications are required.
Strong System Compatibility
The 330190 ETR extension cable is designed specifically for the 3300 XL ETR proximity system. ETR probes and cables can also be used within compatible 3300 XL arrangements, although the presence of an ETR component can limit overall system performance to the ETR specifications.
Practical Replacement Solution
For existing 3300 XL ETR installations, retaining the correct cable length, armor option, and approval configuration can simplify replacement work and help preserve the intended transducer-system design.
Technical FAQs
1. What is the Bently Nevada 330190-040-01-05?
It is a 3300 XL Extended Temperature Range Extension Cable with a 4.0 m length, armored construction, and multiple CSA/ATEX/IECEx approval configuration.
2. What does 330190 identify?
330190 identifies the Bently Nevada 3300 XL ETR Extension Cable family. It is different from the 330130 series, which is the standard-temperature 3300 XL extension-cable family.
3. What does 040 mean?
The 040 option specifies a 4.0 m cable length, equivalent to approximately 13.1 ft.
4. What does 01 mean?
The 01 identifies the armored cable option. The armor provides additional mechanical protection for demanding installations.
5. What does the final 05 indicate?
The final 05 identifies the CSA, ATEX, and IECEx approval option. The actual certification requirements of the installation should be confirmed before selection.
6. What temperature can the ETR extension cable withstand?
The ETR extension cable is rated for temperatures up to approximately 260°C (500°F), substantially above the standard cable's typical temperature capability.
7. What is the cable made of?
The cable uses 75 Ω triaxial construction with PFA insulation. The armored version adds protective armor around the cable assembly.
8. How much does the 330190-040-01-05 weigh?
The armored ETR cable is specified at approximately 103 g/m. A nominal 4.0 m length therefore weighs approximately 0.412 kg, excluding any additional packaging.
9. What is the minimum bend radius?
The minimum recommended cable bend radius is approximately 25.4 mm (1.0 inch). Maintaining this radius helps prevent unnecessary mechanical stress during installation.
10. How should this cable be matched with a Proximitor Sensor?
The extension-cable length plus the probe length should equal the Proximitor Sensor's specified total system length. This is one of the most important selection checks when replacing a 3300 XL transducer component.
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