Introduction
The Bently Nevada 330706-05-46-10-02-00 is a 3300 XL 11 mm Reverse Mount Probe designed for non-contact measurement of shaft vibration, position, and displacement in critical rotating machinery. The full configuration is also documented as 330706-005-046-10-02-00, with the same 3300 XL 11 mm reverse-mount probe designation.
This probe uses an M10 x 1 metric reverse-mount configuration and a 46 mm overall case length, making it particularly useful where conventional probe installation is restricted by machine geometry. The configuration includes a 1.0 m integral cable, miniature ClickLoc coaxial connector, and an agency-approval option of 00, meaning approval is not required.
As part of the 3300 XL 11 mm proximity transducer family, it is suitable for demanding machinery-monitoring duties including radial vibration, axial position, and Keyphasor measurements. The system is designed for measurement across a frequency range of approximately 0 to 8 kHz.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Part Number | 330706-05-46-10-02-00 |
| Full Configuration | 330706-005-046-10-02-00 |
| Product Family | 3300 XL |
| Product Type | 11 mm Reverse Mount Probe |
| Probe Model | 330706-005-046 |
| Sensing Diameter | 11 mm |
| Mounting Type | Reverse Mount |
| Mounting Thread | M10 x 1 |
| Unthreaded Length | 5 mm |
| Overall Case Length | 46 mm |
| Integral Cable Length | 1.0 m (3.3 ft) |
| Connector | Miniature ClickLoc coaxial connector |
| Cable Configuration | Standard cable |
| Agency Approval | 00 – Not required |
| Measurement Principle | Eddy-current, non-contact |
| Measurement Frequency | Approximately 0 to 8 kHz |
| Nominal Linear Range | Approximately 4 mm (160 mils) |
| Nominal Scale Factor | Approximately 3.94 V/mm (100 mV/mil) |
| Typical Measurements | Radial vibration, radial position, axial position, Keyphasor |
| Probe Weight | Approximately 170 g |
| Shipping Weight | Approximately 2 kg |
| Origin | USA |
Applications
Turbine Vibration Monitoring
The 3300 XL 11 mm platform provides non-contact shaft measurement for critical turbine applications. It can be integrated into monitoring arrangements for radial vibration and shaft position.
Axial Position Measurement
The probe can be used for axial-position monitoring where the machine design and target geometry are compatible with the 11 mm proximity transducer system.
Keyphasor Applications
The probe can provide a shaft reference signal in suitable Keyphasor arrangements, supporting rotational-phase measurement and vibration analysis.
Compressor Monitoring
For compatible compressors, the probe can provide continuous shaft-motion information for condition monitoring and machinery protection.
Generator and Motor Monitoring
Large rotating electrical machines can use proximity sensing to monitor shaft movement without mechanical contact between the probe and rotating surface.
Rotating Equipment Protection
When connected to the appropriate Proximitor Sensor and monitoring system, the probe can provide displacement information for machinery alarms, trending, and protective functions.
Restricted-Access Installations
The reverse-mount design is especially valuable when a standard proximity probe cannot be conveniently installed from the conventional direction.
Advantages
Purpose-Built Reverse Mount Design
The 330706 series is designed specifically for installations requiring a reverse-mount arrangement. This provides greater mechanical flexibility than simply substituting a standard-mount 3300 XL probe.
M10 x 1 Metric Thread
The metric M10 x 1 mounting thread makes this probe appropriate for compatible metric machinery and mounting brackets.
46 mm Compact Case
The 46 mm case length offers a useful combination of compact installation dimensions and the measurement capabilities of the 11 mm sensing platform.
Extended 11 mm Sensing Range
The 3300 XL 11 mm design provides approximately 4 mm of nominal linear range, making it useful for shaft-position and displacement applications requiring more measurement range.
Non-Contact Operation
Eddy-current technology measures shaft movement without physical contact. This eliminates direct mechanical wear at the sensing point and supports continuous operation.
1 m Integral Cable
The 1.0 m integral cable is well suited to installations where the probe is located relatively close to the associated Proximitor Sensor.
ClickLoc Connector
The miniature coaxial ClickLoc connector provides a compact and secure connection for compatible 3300 XL monitoring components.
Practical Replacement Configuration
Because the complete ordering code specifies the probe geometry, cable length, connector, and approval option, it provides a clear reference when sourcing a replacement for an existing installation.
Proven Monitoring Platform
The 3300 XL 11 mm system is designed for critical rotating machinery applications, giving this reverse-mount probe a strong fit for industrial condition-monitoring and machinery-protection projects.
Technical FAQs
1. What is the Bently Nevada 330706-05-46-10-02-00?
It is a 3300 XL 11 mm Reverse Mount Probe. The detailed configuration is commonly written as 330706-005-046-10-02-00.
2. What mounting thread does it use?
The probe uses an M10 x 1 metric reverse-mount thread.
3. What does the 005 designation mean?
The 005 field identifies a 5 mm unthreaded length in the 330706 configuration.
4. What does 046 mean?
The 046 designation identifies the 46 mm overall case length.
5. How long is the cable?
The 10 option specifies a 1.0 m (3.3 ft) total cable length.
6. What connector does the probe use?
The 02 option specifies a miniature ClickLoc coaxial connector.
7. Does the final 00 indicate an approval?
Yes. The 00 agency-approval option means approval is not required for this configuration.
8. What is the operating measurement frequency?
Published product information for the 3300 XL 11 mm system specifies measurement of position or vibration over approximately 0 to 8 kHz.
9. What is the approximate weight?
The listed probe weight is approximately 170 g, with a packaged shipping weight of approximately 2 kg.
10. Can this probe replace a standard 330704 probe?
Not as a direct mechanical replacement. The 330706 uses an M10 x 1 reverse-mount configuration, whereas the standard 330704 family uses a different mounting arrangement. The mounting thread, direction, case dimensions, cable configuration, and sensing position must all be checked before substitution.
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