The 330101-00-39-20-02-05 is a Bently Nevada 3300 XL 8mm proximity probe featuring a standard 3/8-24 UNF thread, a 3.9-inch overall case length, and a 2.0-meter integrated cable layout. Fully compliant with API 670 standards, this unit works seamlessly with 3300 XL Proximitor Sensors to deliver highly accurate vibration measurements and stable components cross-correlation in hazardous industrial zones.
Specifications
Unthreaded Length Option：0.0 in
Overall Case Length Option：3.9 in
Total Length Option：2.0 meters (6.6 feet)
Connector and Cable-Type Option：Miniature coaxial ClickLoc connector, standard cable
Agency Approval Option：CSA, ATEX, IECEx Approvals
Application
- Turbomachinery systems: Tracks shaft motion in steam and gas turbines.
- Compressor units: Detects vibration trends for early fault identification.
- Fluid-film bearing equipment: Measures radial position and stability.
- Speed monitoring systems: Provides Keyphasor reference signals.
- Industrial reliability programs: Supports continuous condition monitoring and predictive maintenance strategies.
System Compatibility & Alternative Models
- System Compatibility: Fully compatible with the Bently Nevada 3300 XL Proximitor Sensor and standard 3300 XL extension cables. It features complete physical and electrical interchangeability with standard non-XL 3300 series 5 mm and 8 mm components.
- Alternative Model (For Severe Physical Friction or Impacts): 330102-00-39-20-02-05 Armored Proximity Probe.
- Difference: The 330101-00-39-20-02-05 relies on a standard unarmored 75Ω triaxial FEP cable jacket. The 330102 alternative model adds a flexible stainless steel armor jacket over the lead cable to protect against physical abuse, mechanical cuts, or sharp debris inside machinery housings.
- Alternative Model (For Confined Cross-Talk or Narrow Areas): 3300 NSv Proximity Transducer System.
- Difference: The 330101 8mm probe requires a vast side clearance (minimum 24mm counterbore diameter) to avoid physical signal dampening and wall interference. The 3300 NSv system uses a specialized probe head designed specifically for applications with narrow counterbores, small target diameters, or tight side clearances.
Installation & Troubleshooting FAQ
Q1: What is the correct initial calibration voltage when setting up this proximity probe?
A: For standard radial vibration tracking, the correct recommended initial gap setting corresponds to -9 VDC (approximately 1.27 mm or 50 mils from the target area). This voltage puts the probe near the physical center of its 2.0 mm (80 mils) total linear range.
Q2: What physical thread engagement restrictions should be monitored during installation?
A: For a standard 3/8-24 UNF thread profile, the maximum length of structural thread engagement inside the bracket or machinery casing is 0.563 inches. Exceeding this industry standard limit assumption may trigger severe mechanical binding or physical stripping during sensor rotation.
Q3: Can I wrap silicone self-fusing tape over this probe lead connection inside the machine housing?
A: No. While a 9.1-meter roll of silicone tape (part number 03200006) provides excellent environmental protection for external cable tracks, it is explicitly not recommended for use inside the machine casing, where prolonged exposure to harsh turbine lubricating oils will break down the adhesive seal.
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. |
For the quick assistance message us on WhatsApp at 
