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- 330730-040-01-00
- 3300 XL 11mm Extension Cable
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- 4.0 m
- 0.2kg
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Bently Nevada 330730-040-01-00 Extension Cable — Technical Specifications, Product Introduction, Applications, Advantages, and Related Models
1. Product Introduction
The Bently Nevada 330730-040-01-00 is a 3300 XL 11 mm extension cable designed for use in compatible eddy-current proximity transducer systems. It connects a compatible proximity probe to a Proximitor Sensor and provides the electrical connection required for shaft displacement, vibration, and relative-position monitoring.
This model features a 4.0 m cable length, an armored cable configuration, and an agency approval option that does not require additional approvals. The armored construction provides added mechanical protection in installations where the cable may be exposed to abrasion, vibration, or accidental contact.
The extension cable is an important part of the overall measurement chain. Although it does not measure shaft movement independently, its electrical characteristics affect the performance of the complete probe-and-sensor system. Selecting the correct cable length and configuration is therefore essential for maintaining reliable measurements.
The product is suitable for industrial machinery installations that use compatible 3300 XL 11 mm proximity probes and sensors. Typical equipment includes turbines, compressors, pumps, generators, and other rotating machinery where continuous shaft monitoring is required.
2. Basic Product Information
| Parameter | Specification |
|---|---|
| Brand | Bently Nevada |
| Model | 330730-040-01-00 |
| Product series | 3300 XL |
| Product family | 3300 XL 11 mm Extension Cable |
| Product type | Armored proximity probe extension cable |
| Primary function | Connects a compatible proximity probe to a Proximitor Sensor |
| Measurement system | Eddy-current proximity transducer system |
| Cable length | 4.0 m (13.1 ft) |
| Cable option | Armored cable |
| Agency approval option | Not required under the 00 ordering option |
| Typical compatible probe family | 3300 XL 11 mm proximity probes |
| Typical system component | Compatible Proximitor Sensor |
| Cable capacitance | Approximately 69.9 pF/m (21.3 pF/ft), typical |
| Cable impedance | 75 Ω nominal |
| Armor material | Flexible AISI 302 stainless steel, with a protective outer jacket in the specified configuration |
| Insulation | FEP-type insulation in the applicable configuration |
| Installation type | Fixed industrial cable routing |
| Main applications | Shaft vibration, shaft displacement, and machinery condition monitoring |
| Dimensions | Cable length 4,000 mm; cable and connector dimensions depend on the construction |
| Net weight (kg) | Approximately 0.140 kg |
| Shipping weight (kg) | Approximately 1.0 kg, depending on packaging |
3. Detailed Technical Specifications
The following table provides the main parameters relevant to engineering selection, installation, and replacement.
| Parameter | Technical specification |
|---|---|
| Model | 330730-040-01-00 |
| Brand | Bently Nevada |
| Product family | 3300 XL 11 mm |
| Component type | Extension cable |
| Cable length option | 040 = 4.0 m |
| Connector and cable option | 01 = armored cable |
| Agency approval option | 00 = approval not required |
| Nominal cable impedance | 75 Ω |
| Typical capacitance | 69.9 pF/m (21.3 pF/ft) |
| Core resistance | Approximately 1.0 Ω, subject to the applicable specification and measurement method |
| Cable construction | Armored cable |
| Armor material | Flexible AISI 302 stainless steel |
| Insulation | FEP-type insulation in the specified configuration |
| Connector type | Miniature coaxial ClickLoc connectors compatible with the 3300 XL system |
| Primary function | Signal transmission between the proximity probe and Proximitor Sensor |
| Direct sensing capability | None independently |
| Typical operating temperature | Confirm the applicable cable specification; temperature limits depend on the complete configuration |
| Installation environment | Industrial machinery installations |
| Cable outside diameter | Approximately 3.7 mm for the underlying cable; armored outside diameter is larger and configuration-dependent |
| Connector dimensions | Confirm the applicable mechanical drawing |
| Overall cable length | 4,000 mm, excluding any additional routing allowance |
| Net weight (kg) | Approximately 0.140 kg |
| Shipping weight (kg) | Approximately 1.0 kg |
| Compatible probe | Appropriate 3300 XL 11 mm proximity probe |
| Compatible sensor | Matching Proximitor Sensor |
| System compatibility | Probe length, extension cable length, and sensor requirements must be checked together |
| Replacement requirements | Match the full part number, cable length, armor option, connector type, and approval configuration |
Weight clarification: The cable’s approximate net weight is 0.140 kg, while the packaged shipping weight may be around 1.0 kg. These values refer to different things and should not be used interchangeably for engineering or shipping calculations.
4. Model Number Interpretation
| Model section | Meaning |
|---|---|
| 330730 | 3300 XL 11 mm extension cable family |
| 040 | 4.0 m cable length |
| 01 | Armored cable configuration |
| 00 | Agency approval option not required |
The armored option is the main configuration difference between this model and a standard unarmored extension cable of the same length. The armor helps protect the cable against mechanical damage during installation and operation.
5. Product Applications
5.1 Steam Turbines
Steam turbines operate at high rotational speeds and may require continuous monitoring of shaft vibration and displacement. The extension cable connects the proximity probe to the sensor, allowing the measurement signal to reach the monitoring system.
The armored construction can be useful where the cable passes through areas with mechanical vibration, maintenance activity, or potential abrasion. Proper cable routing remains necessary to prevent crushing, sharp bending, and connector strain.
5.2 Gas Turbines
Gas turbines often have restricted installation space and demanding environmental conditions. A proximity probe may be installed near the shaft, while the associated sensor is positioned farther away.
The 4.0 m extension cable provides a defined connection length. The final routing should be planned to ensure the cable reaches the sensor without excessive tension or unnecessary loops.
5.3 Centrifugal Compressors
Large centrifugal compressors may use proximity transducer systems to monitor shaft vibration and relative shaft position.
The extension cable supports signal transmission between the installed probe and the compatible sensor. A correctly matched cable helps maintain the electrical characteristics required by the complete measurement system.
5.4 Pumps and Motors
Industrial pumps and motors may require continuous monitoring when they support critical processes. Proximity probes can be used in suitable installations to monitor shaft movement.
The extension cable allows the probe to be connected to the monitoring electronics. The armored version may be suitable for installations where additional protection from abrasion or mechanical contact is required.
5.5 Generators
Generators and other rotating electrical machines may use proximity measurement systems to monitor shaft displacement and vibration.
The cable provides the electrical connection from the probe to the sensor. Correct cable selection is particularly important when replacing an existing component, because the system must maintain the intended cable length and electrical characteristics.
5.6 Industrial Machinery Condition Monitoring
In a condition-monitoring installation, measurement signals are recorded and evaluated over time. Changes in shaft vibration or relative position can indicate that the machine’s operating behavior has changed.
The extension cable supports the measurement chain by providing the required connection between the field probe and sensor. It is one component in a larger monitoring system rather than an independent measuring instrument.
6. Product Advantages
6.1 Armored Cable Protection
The 01 cable option provides armor around the cable. This additional protection can reduce the risk of damage from abrasion and incidental mechanical contact during installation and service.
Armor does not make the cable indestructible. The cable must still be installed within its specified bend radius and protected from crushing, excessive tension, and direct exposure beyond its rated limits.
6.2 Defined 4.0 m Length
The 4.0 m cable length provides a predictable connection distance between the probe and the sensor.
Selecting the appropriate length helps simplify cable routing and avoids unnecessary excess cable. The total measurement-system length must still comply with the probe and sensor requirements.
6.3 Compatibility with the 3300 XL 11 mm System
The cable is intended for compatible 3300 XL 11 mm proximity transducer systems. Correctly matching the probe, extension cable, and Proximitor Sensor helps preserve the intended measurement characteristics.
6.4 Stable Signal Transmission
The cable has a specified nominal impedance and capacitance. These characteristics are important because the extension cable forms part of the electrical measurement circuit.
Using the correct cable helps maintain the designed system response. A general-purpose cable should not be substituted merely because it has the same physical length.
6.5 Suitable for Industrial Installation
The armored construction is useful in industrial environments where cables may be exposed to vibration, routine maintenance activity, or accidental contact.
The cable’s actual suitability depends on the installation conditions, including temperature, moisture, chemical exposure, routing, and the required approvals.
6.6 Easier Maintenance and Replacement
The defined model number and cable options make it easier for maintenance personnel to identify the required replacement configuration.
Recording the installed part number, routing, connector arrangement, and sensor model can help reduce errors during future maintenance.
6.7 Supports Continuous Machinery Monitoring
When used as part of a correctly configured measurement chain, the extension cable allows the probe signal to reach the monitoring equipment. This supports continuous monitoring of rotating machinery.
The cable itself does not generate alarms or perform vibration analysis. Those functions depend on the associated sensors and monitoring instruments.
7. Five Related Models or Product Options
The following table lists related cables and components that may be considered when designing, maintaining, or expanding a compatible proximity measurement system.
| Model | Product type | Main function | Key parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 330730-040-01-00 | 3300 XL 11 mm armored extension cable | Connects probe to sensor | 4.0 m; armored cable; 75 Ω nominal impedance; 69.9 pF/m typical capacitance | Cable length 4,000 mm; connector dimensions configuration-dependent | Net approx. 0.140; shipping approx. 1.0 |
| 330730-040-00-00 | Standard extension cable | Probe-to-sensor connection | 4.0 m; standard unarmored cable option | Cable length 4,000 mm | Configuration-dependent |
| 330730-040-02-00 | Extension cable with connector protection | Probe-to-sensor connection | 4.0 m; standard cable with connector protectors | Cable length 4,000 mm; protectors add to connector dimensions | Configuration-dependent |
| 330730-040-03-00 | Armored extension cable with connector protectors | Protected signal connection | 4.0 m; armored cable with connector protectors | Cable length 4,000 mm; final dimensions depend on connector protection | Configuration-dependent |
| 330730-040-10-00 | FluidLoc extension cable | Probe-to-sensor connection where fluid migration protection is required | 4.0 m; FluidLoc cable option; verify system compatibility | Cable length 4,000 mm | Configuration-dependent |
These models represent different cable configurations within the same product family. They should not be treated as interchangeable without checking the installed system’s requirements.
8. Five Other Common Models and Product Families
The following table provides examples of related equipment used in industrial machinery monitoring. The items include both sensing components and monitoring hardware, so they serve different purposes.
| Model | Product series/type | Main application | Key parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 330710 Series | 3300 XL 11 mm proximity probe | Shaft displacement and vibration-related measurement | 11 mm-class probe family; must be matched with compatible cable and sensor | Depends on full part number | Configuration-dependent |
| 330101 Series | 3300 XL 8 mm proximity probe | Shaft vibration and displacement measurement | 8 mm probe family; different configuration from the 11 mm family | Depends on full part number | Configuration-dependent |
| 330103 Series | 3300 XL 8 mm proximity probe | Non-contact shaft monitoring | Select according to mounting dimensions, cable, and sensor compatibility | Depends on full part number | Configuration-dependent |
| 3300 XL Proximitor Sensor | Signal-conditioning sensor | Processes the probe measurement signal | Must match the selected probe and cable system | Depends on sensor model | Configuration-dependent |
| 3500/42M | Machinery monitoring module | Vibration and position monitoring | Channel functions and system capabilities depend on the installed configuration | Module dimensions depend on hardware version | Configuration-dependent |
These products are related to the broader monitoring system but are not direct substitutes for the 330730-040-01-00 extension cable.
9. Comparison of Cable Options
| Selection factor | 330730-040-01-00 | 330730-040-00-00 | 330730-040-02-00 | 330730-040-03-00 |
|---|---|---|---|---|
| Cable length | 4.0 m | 4.0 m | 4.0 m | 4.0 m |
| Cable construction | Armored | Standard | Standard | Armored |
| Connector protectors | Not included in the 01 cable option |
Not included | Included | Included |
| Mechanical protection | Additional armor | Standard cable construction | Standard cable with connector protection | Armor and connector protection |
| Main selection consideration | Protection along cable route | Standard installation requirements | Connector protection requirements | Cable and connector protection requirements |
| Dimensions | 4,000 mm cable plus connectors | 4,000 mm cable plus connectors | 4,000 mm cable plus connectors and protectors | 4,000 mm cable plus connectors and protectors |
| Net weight (kg) | Approx. 0.140 | Verify exact version | Verify exact version | Verify exact version |
The most suitable cable depends on the installation environment. If the cable route is exposed to abrasion, the armored version may be appropriate. If connector protection is the main concern, a version with connector protectors may be worth considering. All alternatives must meet the required electrical and system-length specifications.
10. Installation and Maintenance Guidelines
Before installation, confirm that the cable model matches the existing probe and Proximitor Sensor. The extension cable must be compatible with the complete measurement chain, not merely with the physical connector.
During routing, avoid sharp bends, crushing, excessive tension, and contact with moving machinery. The armored construction provides additional protection but does not remove the need for correct installation practices.
The probe cable, extension cable, and sensor must be selected as a matched system. Incorrect cable length or electrical characteristics may affect the measurement response.
After installation, inspect the connectors and verify that the complete measurement channel operates as expected. Any commissioning checks should follow the applicable system procedures.
For maintenance records, retain the complete model number and record the installation location, cable length, armor option, connector arrangement, and compatible sensor model. These details simplify future replacement and reduce the risk of installing an incompatible component.
11. Ordering Checklist
Before ordering the 330730-040-01-00, verify the following:
1. The complete model number is correct.
2. The required cable length is 4.0 m.
3. The armored cable option is required for the installation.
4. The connector arrangement matches the installed probe and sensor.
5. The total probe-and-cable configuration is compatible with the selected Proximitor Sensor.
6. The approval option meets the project’s installation requirements.
7. The cable routing and connector dimensions fit the available space.
8. The net cable weight and shipping weight are recorded separately.
9. Any proposed alternative is checked for electrical and mechanical compatibility before installation.
12. Conclusion
The Bently Nevada 330730-040-01-00 is a 4.0 m armored extension cable in the 3300 XL 11 mm proximity transducer family. It provides the electrical connection between a compatible proximity probe and Proximitor Sensor, supporting shaft vibration and displacement monitoring in industrial rotating machinery.
Its main features include the defined 4.0 m length, armored cable construction, specified electrical characteristics, and compatibility with the appropriate 3300 XL 11 mm measurement system.
When selecting a replacement, the most important considerations are the complete model number, cable length, armor option, connector arrangement, and compatibility with the installed probe and sensor. The cable’s approximate net weight is 0.140 kg, while the packaged shipping weight may be around 1.0 kg; these should be treated as separate values.