Introduction
The Bently Nevada 330190-035-00-00 is a 3300 XL Extended Temperature Range (ETR) Extension Cable designed to provide the electrical connection between a compatible 3300 XL proximity probe and Proximitor Sensor in demanding machinery-monitoring applications.
This configuration features a 3.5 m cable length, standard non-armored cable construction, and no additional agency approval option. The 330190 family uses PFA-insulated triaxial cable, giving it the extended-temperature characteristics required for installations where standard extension-cable materials may not be suitable.
With a nominal length of 3.5 m (11.5 ft), this model offers a useful middle-ground configuration for machinery where a 3.0 m cable is too short but a 4.0 m or longer cable would introduce unnecessary routing length. The cable is designed for use within the 3300 XL proximity transducer architecture, where the probe length and extension-cable length must be correctly matched to the Proximitor Sensor's total system length.
Technical Specifications
The model number 330190-035-00-00 can be read directly from the 3300 XL ETR extension-cable ordering structure: 330190 identifies the ETR extension-cable family, 035 specifies 3.5 m cable length, 00 specifies standard cable without armor, and the final 00 indicates that no additional agency approval is required.
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 330190-035-00-00 |
| Product Type | 3300 XL ETR Extension Cable |
| Series | 330190 |
| Cable Length | 3.5 m (11.5 ft) |
| Cable Configuration | Standard, non-armored |
| Agency Approval | 00 – Not required |
| Cable Construction | 75 Ω triaxial |
| Insulation | PFA |
| Cable Outside Diameter | Approx. 3.7 mm maximum |
| Connector Type | Miniature coaxial ClickLoc |
| Connector Diameter | Approx. 7.24 mm maximum |
| Minimum Bend Radius | Approx. 25.4 mm (1.0 in) |
| Cable Length Tolerance | +20%, -0% |
| ETR Temperature Capability | Up to approximately 260°C (500°F) |
| Nominal Cable Weight | Approx. 68–70 g/m |
| Approx. 3.5 m Cable Weight | Approx. 0.24 kg |
| Typical Application | High-temperature proximity transducer systems |
Applications
Steam Turbine Monitoring
The 330190-035-00-00 is a practical option for steam-turbine installations where the proximity probe is exposed to elevated temperatures and the Proximitor Sensor is positioned farther away from the sensing location.
Gas Turbine Equipment
Gas-turbine machinery can present both thermal and routing challenges. The ETR cable provides the high-temperature cable construction required for appropriately engineered installations.
Compressor Systems
For critical compressors using proximity probes to measure rotor vibration and position, the 3.5 m length can provide convenient routing between the sensing point and signal-conditioning electronics.
Generator Monitoring
The cable can be incorporated into generator shaft-monitoring systems where the proximity probe and Proximitor Sensor cannot be installed immediately adjacent to one another.
Fluid-Film Bearing Machines
3300 XL proximity transducers are widely suited to machines using fluid-film bearings because they measure shaft movement directly. The extension cable provides the necessary connection between the probe and Proximitor Sensor.
High-Temperature Machinery
The key application advantage is the ETR construction. PFA insulation provides the thermal capability required for installations where standard FEP-based extension-cable construction may not be the preferred choice.
Compact Cable Routing
At 3.5 m, this configuration is particularly useful when the installation requires more reach than a 3.0 m cable but does not justify the additional routing length of a 4.0 m or 4.5 m model.
Advantages
Extended Temperature Capability
The 330190 series is purpose-built for Extended Temperature Range applications. Its PFA cable construction supports use in high-temperature environments, with the ETR system rated to approximately 260°C (500°F).
Practical 3.5-Meter Length
The 3.5 m cable provides a useful intermediate length for installations where standard 3.0 m and 4.0 m options do not provide the ideal routing arrangement.
Slim Non-Armored Construction
The 00 cable option is standard and non-armored, keeping the cable assembly compact. This can make routing easier through restricted spaces, provided the installation does not require additional mechanical armor.
PFA Insulation
PFA insulation is one of the defining features of the ETR cable. It is engineered for higher-temperature service and helps maintain the required electrical and mechanical characteristics in demanding environments.
75 Ω Triaxial Design
The controlled 75 Ω triaxial construction is designed to work as part of the 3300 XL proximity transducer system, supporting the required signal characteristics between the probe and Proximitor Sensor.
ClickLoc Connector Compatibility
The miniature coaxial ClickLoc connection provides a secure connection between the extension cable and associated components without requiring a complicated connector installation process.
Reduced Routing Bulk
Compared with the armored 330190-035-01-00 configuration, the non-armored version has a considerably smaller cable diameter. This can be valuable when conduit entries, cable trays, or machinery penetrations are space constrained.
Easy System Matching
The clearly defined 3.5 m length makes it straightforward to calculate the required probe-plus-extension-cable system length before selecting the Proximitor Sensor.
Suitable Replacement Option
For existing 3300 XL ETR installations using a 3.5 m non-armored extension cable, this configuration offers a direct and practical replacement format without unnecessarily changing the cable architecture.
Technical FAQs
1. What is the Bently Nevada 330190-035-00-00?
It is a 3300 XL Extended Temperature Range Extension Cable with a nominal 3.5 m length, standard non-armored construction, and no additional agency approval option.
2. What does 330190 represent?
330190 identifies the 3300 XL ETR Extension Cable family. The ETR version uses PFA-insulated cable construction for elevated-temperature applications.
3. What does 035 mean?
The 035 option specifies a 3.5 m cable length, equivalent to approximately 11.5 ft.
4. What does the first 00 mean?
The first 00 identifies the standard, non-armored cable option. The alternative 01 specifies armored cable.
5. What does the final 00 mean?
The final 00 means that no additional agency approval is required. The 330190 ordering structure also provides a 05 multiple-approval option.
6. Is the 330190-035-00-00 an armored cable?
No. This model uses the standard non-armored cable configuration. For additional mechanical protection, the corresponding 330190-035-01-00 configuration should be considered.
7. What material is used for the ETR cable insulation?
The 330190 ETR extension cable uses PFA insulation. The 330130 standard extension cable uses FEP-based construction, while 330190 is the PFA ETR version.
8. What is the cable length tolerance?
The published specification gives the cable length tolerance as +20%, -0%. Therefore, the 3.5 m designation represents the nominal ordered length.
9. What is the cable diameter and weight?
The standard 330190 cable has a maximum outside diameter of approximately 3.7 mm. Based on the published cable construction and typical mass-per-length specification, a 3.5 m assembly is approximately 0.24 kg before packaging. Dimensional and weight values can vary slightly with connector and production configuration.
10. How should this extension cable be matched with the probe and Proximitor Sensor?
The probe length plus extension-cable length must equal the total system length specified for the Proximitor Sensor. This is essential because the complete 3300 XL transducer system is calibrated as a defined electrical configuration.
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