330703-000-050-50-02-00 is a Bently Nevada 11mm proximity probe featuring an M14x1.5 metric thread profile and an extended 4.0mm linear range. Fully compatible with large industrial machinery layouts, this unit works seamlessly with 5-meter Proximitor sensors to deliver high-accuracy thrust path displacement verification and stable industrial network communication.
Specifications
Unthreaded Length Option:0 mm
Overall Case Length Option:50 mm
Total Length Option:5.0 meters (16.4 feet)
Connector and Cable-Type Option:Miniature coaxial ClickLoc connector, standard cable
Agency Approval Option:Not required
Dimensions:2.3x2x112cm
Weight:0.1kg
Enviromental Strength
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RFI/EMI Immunity: Achieves CE mark approval without special mounting considerations, resisting nearby high-frequency radio signals.
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FluidLoc Option: Prevents oil and liquid leakage through cable interior for machine integrity.
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Connector Protection: Optional connector protectors or silicone tape provide additional environmental protection in humid conditions.
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Locknut with Safety Wire: Standard locknut features pre-drilled safety wire holes for secure installation.
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Robust Bonding: Patented TipLoc molding and CableLoc design deliver 330 N (75 lb) pull strength for reliable probe attachment.
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Corrosion Resistance: Gold-plated brass ClickLoc connectors resist corrosion and lock securely against vibration.
Specific Application
- Ramp differential expansion measurements on industrial steam turbines where large thermal growth shifts exceed regular 8mm system tracking limits.
- Thrust (axial) position and rod drop monitoring on large-scale reciprocating compressors with high shaft dynamic movement.
- Industrial machine environments utilizing native European or Asian M14 metric threaded housings without needing mechanical thread adapters.
Ordering Information
|
Model Option Block |
Parameter Selection |
Decoded Hardware Specifications |
|
Base Model |
330703 |
3300 XL 11 mm Probe, M14 x 1.5 thread, without armor |
|
AAA: Unthreaded Length |
000 |
0 mm unthreaded length (fully threaded case) |
|
BBB: Overall Case Length |
050 |
50 mm overall metric case length |
|
CC: Total Length |
50 |
5.0 meters (16.4 feet) integral cable length |
|
DD: Connector/Cable Type |
02 |
Miniature coaxial ClickLoc connector, standard FEP cable |
|
EE: Agency Approval |
00 |
No regulatory agency approvals required |
Installation & Troubleshooting FAQ
Q1: What are the torque limits and tool sizes for mounting this M14x1.5 case probe?
A: The maximum rated torque for the M14x1.5 probe casing is 63.3 N·m (560 in·lb), and the recommended engineering installation torque is 21.1 N·m (187 in·lb). The hardware ships standard with a 22 mm locknut featuring safety wire holes, and the probe barrel incorporates integrated 12 mm wrench flats to hold the assembly secure during final gapping adjustments.
Q2: What is the recommended gap voltage and mechanical physical clearance for this 11mm system?
A: The standard scale factor for the 11mm transducer loop is 3.94 V/mm (100 mV/mil), and the recommended installation gap setting is exactly 2.5 mm (100 mils), which yields an initial calibration output of roughly -10.0 VDC. Because the probe tip diameter is a larger 10.7 mm, you must maintain a minimum target diameter face of 30.5 mm (1.2 in) and an adjacent shaft distance spacing of 58 mm to avoid signal coupling faults.
Q3: Can I cut or shorten this 5.0-meter probe cable to better fit a small junction box space?
A: No, never alter or cut down the integral cable length of the proximity probe assembly. The electrical loop characteristics of the system are calibrated to a precise 75Ω triaxial line impedance with a standard nominal probe DC resistance of 7.2 ± 0.8 ohms across the 5.0-meter run. Splicing or shortening the wire permanently damages the internal signal matching networks and voids the calibration accuracy.
Q4: Why does my monitoring framework throw a target error when replacing a legacy 7200-series 11mm probe?
A: The 3300 XL 11mm hardware uses updated circuitry that is not backward compatible with legacy 7200-series components. Upgrading requires changing out every part of the loop to 3300 XL standard pieces and updating your 3500 Monitoring Rack software configurations to properly read the updated 3.94 V/mm incremental scale factor parameters.
Accessories
| 146255 | 3300XL 11 mm User Guide |
| 144979 | Performance Specification |
| 02120015 | Bulk field wire. 1.0 mm2 (18 AWG), 3 conductor, twisted, shielded cable with drain wire. Specify length in feet. |
| 02173009 | Bulk field wire. 1.0 mm2 (18 AWG), 3 conductor, twisted, shielded cable. Specify length in feet. |
| 138492-01 | Replacement panel-mount mounting pad |
| 138493-01 | Replacement DIN-mount mounting pad |
| 01609137 | BNC (F) to banana plugs |
| 01609138 | Proximitor Connector Test Pin wiring (two test pins to a BNC (F) connector) |
| 40971-04 | 50 Ω cable with two BNC (M) connectors. Use this cable in combination with adapter 01609137 and adapter 01609138 when checking performance of the transducer system from the Proximitor Sensor test pin holes |
| 04310310 | 3300XL Proximitor Sensor Panelmount Screws. Package includes four 6-32 UNC thread forming mounting screws (Supplied standard with 3300 XL Proximitor Housings [3300 XL option]). |
| 03200006 | Silicone Self-fusing tape. A 9.1 meter (10 yard) roll of silicone tape to protect connectors. It is easy to install and provides excellent electrical isolation and protection from the environment. It is not recommended for use inside the casing of the machine. |
| 40113-02 | Connector Protector Kit. Connector Protector Kit for 3300 XL probes and extension cables, including connector protectors and installation tools. |
| 136536-01 |
Connector Protector Adapter. Makes our previous 3300 connector protector kits compatible with 3300 XL probes and extension cable connectors |
| 40180-02 | Connector Protectors. Package contains 10 pairs of connector protectors. |
| 03839410 | Male Connector Protector. Placed on the extension cable to connect to the female connector protector on the probe and provide environmental protection of connectors. |
| 03839420 | Female Connector Protector. Placed on the probe lead to connect to the male connector protector on the extension cable and provide environmental protection of connectors. Also placed on the extension cable to slide over the Proximitor Sensor connection and protect it from the environment. |
| 330153-01 | 3300 XL Connector Kit. Used on 3300 XL probes and extension cables. Contains one set of male and female ClickLoc connectors, sleeves and one strip of silicone tape. |
| 163356 | Connector Crimp Tool Kit. Includes one set of 75 Ω 3300 XL ClickLoc inserts and connector installation instructions. Supplied with carrying case. |




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