Introduction
The Bently Nevada 330190-085-01-00 is a 3300 XL Extended Temperature Range (ETR) Extension Cable designed for high-temperature proximity monitoring systems used on critical rotating machinery.
This configuration combines an 8.5 m cable length, armored construction, and no additional agency approval option. It is intended to provide a reliable electrical connection between a compatible 3300 XL ETR proximity probe and Proximitor Sensor while maintaining the electrical characteristics required by the 3300 XL proximity transducer system.
The ETR extension cable uses 75 Ω triaxial PFA-insulated cable construction and is rated for temperatures up to approximately 260°C (500°F). The armored design adds mechanical protection for demanding industrial cable routes, making this model a particularly useful choice for turbines, compressors, generators, and other high-temperature rotating equipment.
The part number itself clearly identifies the configuration: 330190 is the 3300 XL ETR extension-cable family, 085 specifies 8.5 m, 01 specifies armored cable, and 00 means that no additional CSA/ATEX/IECEx approval option is selected.
Technical Specifications
The 330190-085-01-00 is configured for installations requiring a relatively long ETR extension cable. The 8.5 m option is equivalent to approximately 27.9 ft, providing substantial routing flexibility between the probe and Proximitor Sensor.
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 330190-085-01-00 |
| Product Type | 3300 XL ETR Extension Cable |
| Series | 330190 |
| Cable Length | 8.5 m (27.9 ft) |
| Cable Option | Armored |
| Agency Approval Option | 00 – Not required |
| Cable Construction | 75 Ω triaxial |
| Insulation | PFA |
| Armor | PFA-coated armor |
| Cable Diameter | Approx. 7.67 mm maximum with armor |
| Armor Ferrule Diameter | Approx. 10.2 mm maximum |
| Minimum Bend Radius | 25.4 mm (1.0 in) |
| Connector Type | Miniature coaxial ClickLoc |
| Connector Material | Gold-plated brass or gold-plated beryllium copper |
| Temperature Capability | Up to approximately 260°C (500°F) |
| Nominal Cable Weight | Approx. 103 g/m |
| Calculated 8.5 m Cable Mass | Approx. 0.88 kg |
| Typical Shipping Weight | Approx. 2 kg |
| Application | High-temperature proximity transducer systems |
Applications
Turbine Shaft Monitoring
The 330190-085-01-00 is well suited to turbine installations where the proximity probe is located some distance from the Proximitor Sensor. The 8.5 m cable provides additional routing freedom without requiring an improvised cable extension.
Steam Turbines
Steam-turbine installations can expose transducer cabling to elevated temperatures. The ETR construction is designed for these thermally demanding environments and provides substantially greater temperature capability than standard 3300 XL extension cable.
Gas Turbines
The armored cable can provide a robust signal path for proximity measurements around gas-turbine equipment where heat and mechanical exposure are both considerations.
Compressor Monitoring
Large compressors often require carefully positioned shaft-vibration probes. The 8.5 m extension length can accommodate installations where the monitoring electronics are positioned away from the sensing location.
Generator Monitoring
For large generators and other rotating electrical machines, the cable can connect shaft-position or vibration probes to remotely mounted Proximitor Sensors.
Fluid-Film Bearing Systems
Proximity transducers are commonly used to measure shaft movement directly on machines with fluid-film bearings. The 330190 extension cable helps maintain the required connection between the probe and signal-conditioning electronics.
High-Temperature Machinery
Where the extension-cable section itself may encounter elevated temperatures, the 330190 ETR family provides a more appropriate solution than the standard-temperature 330130 extension-cable family. The ETR cable is rated to approximately 260°C (500°F).
Long-Route Transducer Installations
The 8.5 m configuration is particularly useful when the distance between the sensing point and Proximitor Sensor requires a longer factory-configured cable arrangement.
Advantages
Extended Temperature Performance
The primary benefit of the 330190 series is its high-temperature capability. The ETR extension cable is designed for temperatures up to approximately 260°C (500°F), making it a strong choice for thermally demanding installations.
8.5-Meter Cable Length
The 085 configuration provides 8.5 m of nominal cable length, or approximately 27.9 ft. This makes the model useful when shorter 3 m, 4 m, or 4.5 m configurations do not provide sufficient routing distance.
Armored Construction
The 01 suffix specifies armored cable. The armor adds an additional layer of mechanical protection against abrasion and physical damage along exposed industrial cable routes.
PFA Insulation
The ETR cable uses PFA insulation, giving it the thermal characteristics required for high-temperature proximity-transducer installations.
Controlled Electrical Characteristics
The 75 Ω triaxial construction helps maintain the electrical properties expected by the 3300 XL proximity transducer system, supporting reliable signal transmission over the complete probe/cable/Proximitor chain.
ClickLoc Connector System
The 3300 XL system uses gold-plated ClickLoc connectors designed for secure connection without specialized installation tools. The connector mechanism is engineered to resist loosening during normal operation.
Long-Term Industrial Utility
The combination of ETR construction, armored protection, and an 8.5 m factory-configured length makes this cable particularly practical for replacement work on established 3300 XL installations.
Flexible Installation
Although the cable is relatively long, the 25.4 mm minimum bend radius allows practical routing around many machinery installations when the cable is installed correctly.
Straightforward Part-Number Identification
The complete model number communicates the key configuration at a glance:
330190 / 085 / 01 / 00
-
330190 = 3300 XL ETR Extension Cable
-
085 = 8.5 m cable
-
01 = Armored cable
-
00 = Agency approval not required
This is especially helpful when identifying replacement components for existing machinery.
Technical FAQs
1. What is the Bently Nevada 330190-085-01-00?
It is an 8.5 m armored 3300 XL Extended Temperature Range Extension Cable used to connect a compatible proximity probe to a Proximitor Sensor.
2. What does 330190 represent?
330190 identifies the Bently Nevada 3300 XL ETR Extension Cable family. The ETR version uses PFA-insulated cable construction for higher-temperature applications.
3. What does 085 mean?
The 085 option specifies an 8.5 m (27.9 ft) cable length.
4. What does 01 mean?
The 01 identifies the armored cable option. The armor provides additional protection for demanding industrial installations.
5. What does the final 00 indicate?
The final 00 indicates that no additional agency approval option is required. This differs from the 05 configuration, which is associated with CSA, ATEX, and IECEx approvals.
6. What temperature can this cable withstand?
The 3300 XL ETR extension cable is rated for temperatures up to approximately 260°C (500°F).
7. What is the cable construction?
The ETR extension cable uses a 75 Ω triaxial cable with PFA insulation. The 330190 family is specifically differentiated from the standard 330130 extension cable by its ETR PFA construction.
8. How much does the 330190-085-01-00 weigh?
The armored cable specification is approximately 103 g/m, giving a calculated bare-cable mass of about 0.88 kg for 8.5 m. Exact product shipping weight can be higher; listings for this exact configuration specify approximately 2 kg shipping weight.
9. What is the minimum bend radius?
The specified minimum cable bend radius is approximately 25.4 mm (1.0 inch). This should be observed during installation to avoid excessive mechanical stress on the cable.
10. How should the 8.5 m cable be matched with the probe and Proximitor Sensor?
The extension-cable length plus the probe length must equal the total system length specified for the Proximitor Sensor. This is a critical selection point when replacing components in a 3300 XL proximity transducer system.
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