The 330105-02-12-10-02-00 reverse mount probe is a Bently Nevada eddy current sensor featuring an unthreaded length of 5.0mm, a 30mm case length, and a 3/8-24 UNF thread pattern. Fully compatible with external probe housings, this unit works seamlessly with 3300 XL Proximitor sensors to deliver rigid mechanical protection and stable non-contact shaft vibration telemetry in heavy-duty machinery housings.
Features and benefits
The Bently Nevada 330105-02-12-10-02-00 proximity probe is part of the advanced 3300 XL 8 mm proximity transducer system, designed for precise vibration and position monitoring on rotating machinery. It provides stable output signals proportional to shaft displacement and supports both static and dynamic measurements. Compliant with API 670 standards, the probe ensures excellent accuracy, temperature stability, and reliability. Its interchangeable design allows easy integration with compatible probes, extension cables, and Proximitor sensors.
Specific Application
- Radial vibration and axial position measurements inside protective externally mounted proximity probe housings (such as 21000, 24701, or 31000 series).
- Retrofit or replacement sensor installations on fluid-film bearing machines with standard English mounting hardware configurations.
- Shaft displacement monitoring where space layout restrictions necessitate a reverse-mount wiring path out through a rigid protective sleeve.
System Compatibility and Alternative Models
- System Compatibility: Connects directly to a 3300 XL standard 4.0-meter extension cable (such as 330130-040) to match a 5.0-meter Proximitor Sensor (such as 330180-50), or can be paired with an 8.0-meter cable for a 9.0-meter system configuration. It features complete physical and electrical interchangeability with older, non-XL 3300 series 5mm and 8mm transducer systems.
- Alternative Model: 330106-05-30-10-02-00 Metric Reverse Mount Proximity Probe.
- Key Differences:
Threading Specification: The 330105 model uses English 3/8-24 UNF threads with a 7/16-inch hexagonal nut profile, whereas the 330106 utilizes metric M10 x 1 threads with an 10mm hexagonal casing structure.
Mechanical Length Increments: The 330105 features a standardized unthreaded length of 5.0mm (0.20 in) and a case length of 30mm (1.2 in), while the 330106 metric alternative layout follows a 5.0mm unthreaded length paired with a 30mm metric envelope structure.
Ordering Information Summary
Reverse Mount Base Model Range
- 330105: 3300 XL 8mm Reverse Mount Proximity Probe assembly equipped with standard 3/8-24 UNF case threading.
Detailed Suffix Option Configuration
- A: Unthreaded Length Option: 02 – 5.0 mm (0.20 in). Fixed configuration standard for reverse mount probes.
- B: Overall Case Length Option: 12 – 30 mm (1.2 in). Fixed configuration standard for reverse mount probes.
- C: Total Length Option: 10 – 1.0 meter (3.3 feet) integral cable length. (Other available lengths include 0.5m, 1.5m, 2.0m, 5.0m, and 9.0m).
- D: Connector Option: 02 – Miniature ClickLoc coaxial connector layout supplied without an integrated connector protector.
- E: Agency Approval Option: 00 – Standard commercial product layout with no regulatory approvals required.
FAQ
Q1: What is the function of the 330105-02-12-10-02-00 proximity probe?
A1: The Bently Nevada 330105-02-12-10-02-00 is used to measure shaft vibration and position by producing an output voltage proportional to the distance between the probe tip and a conductive surface.
Q2: What system does the 330105-02-12-10-02-00 belong to?
A2: It is part of the Bently Nevada 3300 XL 8 mm Proximity Transducer System used for machinery protection and condition monitoring.
Q3: What are the common applications of the 330105-02-12-10-02-00?
A3: It is commonly used for vibration monitoring, shaft position measurement, Keyphasor reference, and speed monitoring in rotating machinery.
Q4: Does the 330105-02-12-10-02-00 comply with industry standards?
A4: Yes, the system is designed to meet the requirements of the API 670 for performance and reliability.
Q5: Is the 330105-02-12-10-02-00 interchangeable with other components?
A5: Yes, it supports interchangeability with compatible 3300 series probes, extension cables, and Proximitor sensors, simplifying installation and maintenance.
Accessories
| 141078 | 3300 XL 8 mm and 3300 5 mm Proximity Transducer System Manual. |
| 175751 | 3300 XL Multi-Purpose Stainless Steel Housing. 12”x12”x6”. Can hold up to 8 Proximitor Sensors in a DIN-mount configuration or 6 Proximitor Sensors in a panelmount configuration. (Available with ATEX Zone 0 and Zone 1 certifications.) |
| 176467 | 3300 XL Multi-Purpose Stainless Steel Housing. 12”x8”x6”. Can hold up to 4 3300XL Proximitor Sensors in both DIN-mount and panel-mount configurations. (Available with ATEX Zone 0 and Zone 1 certifications.) |
| 330181 | 3300 XL Multi-Purpose Stainless Steel Housing. 13”x9.5”x7”. Can hold up to 8 Proximitor sensors in a DIN-mount configuration or 6 Proximitor Sensors in a panelmount configuration. Primarily used by customers requiring hazardous area approvals fro their installations. Available with ATEX Zone 0 and Zone 1 and North American Division 1 and Division 2 certifications. |
| 02120015 | Bulk field wire. 1.0 mm2 (18 AWG), 3 conductor, twisted, shielded cable with drain wire. Specify length in feet. |
| 138492-01 | Replacement panel-mount mounting pad. |
| 138493-01 | Replacement DIN-mount mounting pad. |
| 148722-01 | 3300 XL test plug. The 3300 XL Test Plug contains 3 small test pins attached to 3 color-coded 1-meter wires, each terminated in a banana plug. The 3-pin adapter plugs into the test pin holes on 3300 XL-style Proximitor sensors. You can use this test plug to check the performance of the Proximitor sensor from the test pin holes in the terminal strip without removing the field wiring. |
| 04310310 | 3300 XL Proximitor Sensor panelmount screw. One 6-32 UNC thread forming mounting screw. Four screws are required for each Proximitor sensor. (Screws supplied standard with Proximitor housings [3300 XL panel-mount option]). |
| 03200006 | Silicone self-fusing tape. A 9.1- meter (10-yard) roll of silicone tape to protect connectors. This tape is easy to install and provides excellent electrical isolation and protection from the environment. We do not recommend using this tape inside the casing of the machine. |
| 40113-02 | Connector Protector Kit. Connector Protector Kit for 3300 XL 8 mm probes and extension cables, including connector protectors and installation tools. |
| 136536-01 | Connector protector adapter. This allows you to use connector protector installation tools manufactured prior to 1998 with 75Ω ClickLoc connectors. |
| 40180-02 | Connector protectors. Package contains 10 pairs of connector protectors for 3300 XL 8 mm probes and extension cables. |
| 03839410 | 75Ω triaxial male connector protector. Male connector protectors install onto the extension cable and attach to the female connector protector on the probe, providing environmental protection of connectors. |
| 03839420 | 75Ω triaxial female connector protector. Female connector protectors install onto the probe lead and attach to the male connector protector on the extension cable, providing environmental protection of connectors. You can also place the connector protector onto the extension cable to slide over the connection to the Proximitor sensor to protect that connection from the environment. |
| 04301007 | 3/8-24 probe lock nut with safety wire holes. Single probe lock nut with 2 holes drilled through the nut in order to secure the lock nut in place with safety wire. |
| 04301008 | M10 x 1 probe lock nut with safety wire holes. Single probe lock nut with 2 holes drilled through the nut in order to secure the lock nut in place with safety wire. |
| 330153-01 | 3300 XL connector kit. Used on 3300 XL 8 mm probes and extension cables. Contains 1 pair each of male and female ClickLoc connectors, 2 colorcoded sleeves, 2 pieces of slit FEP tubing, and 1 strip of silicone tape. |
| 330153-09 | 3300 XL ETR Connector Kit. Used on ETR 3300 XL 8mm probes and 3300 ETR XL extension cables. Contains one pair of male and female ClickLoc connectors, two color-coded sleeves, two pieces of high temperature slit FEP tubing, and one strip of silicon tape. |
| 163356 | Connector Crimp Tool Kit. Includes 1 set of multiconnector inserts and connector installation instructions. Compatible only with 330153 connector kits or with probes shipped in 2003 or later with ClickLoc connectors uninstalled. Supplied with carrying case. |




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