Product Overview
The Bently Nevada 330709-000-030-90-12-05 is a precision 3300 XL 11 mm Proximity Probe designed for reliable vibration and position monitoring in critical rotating machinery. This probe features a 9.0 meter (29.5 ft) total length, M16 x 1.5 threaded case, and a miniature coaxial ClickLoc connector with FluidLoc cable for secure installation in harsh environments. Manufactured in the USA, the 330709-000-030-90-12-05 delivers accurate eddy-current sensing for applications in turbines, compressors, and pumps.
Technical Specifications
| Parameter |
Value |
| Probe Type |
3300 XL 11 mm, M16 x 1.5 thread, without armor |
| Unthreaded Length |
0 mm |
| Overall Case Length |
30 mm |
| Total Length |
9.0 meters (29.5 feet) |
| Connector & Cable |
Miniature coaxial ClickLoc, FluidLoc cable |
| Agency Approvals |
Multiple Approvals |
| Probe DC Resistance (RPROBE) |
8.5 ± 1.1 ohms (center to outer conductor) |
| Minimum Target Diameter |
30.5 mm (1.2 in) flat surface; 152 mm (6.0 in) shaft |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel |
| Cable Specification |
75 Ω triaxial, FEP insulated (9 m length) |
| Case Thread |
M16x1.5 |
| Max Thread Engagement |
24 mm |
| Recommended Case Torque |
21.1 N•m (187 in•lb) |
| Max Case Torque |
63.3 N•m (560 in•lb) |
| Connector-to-connector Torque (max) |
0.565 N•m (5 in•lb) – finger tight |
| Min Bend Radius |
25.4 mm (1.0 in) |
| Operating/Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Pressure Seal Warning |
Avoid exposure below -34°C (-30°F) |
Real-World Applications
The 330709-000-030-90-12-05 excels in measuring shaft vibration and axial position in steam turbines, centrifugal compressors, and large pumps. Its 9-meter cable allows installation in remote or high-temperature zones without signal degradation. The robust PPS tip and stainless steel case resist corrosion in oil and gas environments. For example, in a refinery compressor train, this probe provides reliable data for predictive maintenance, reducing unplanned downtime.
Installation & Setup Guidance
When mounting the Bently Nevada 330709-000-030-90-12-05, ensure the target surface is clean and grounded. Use the recommended case torque of 21.1 N•m (187 in•lb) to avoid thread galling. Do not exceed 63.3 N•m. The connector requires only finger-tight torque (0.565 N•m max) to prevent damage. Maintain a minimum bend radius of 25.4 mm for the cable. For cross-talk reduction, use the specified minimum target diameters: 30.5 mm for flat surfaces and 152 mm for shafts.
Maintenance & Reliability
Regularly inspect the cable and connector for cuts or corrosion, especially in environments with temperatures below -34°C (-30°F) where pressure seal failure may occur. Store the probe within the -52°C to +177°C range. The FEP cable jacket resists chemicals but should be checked periodically. Re-torque the case to 21.1 N•m after initial thermal cycling. Following these guidelines extends the probe's service life and maintains measurement accuracy.
Selection Guide & Purchasing Advice
Before ordering the 330709-000-030-90-12-05, verify your system's thread size (M16x1.5) and required cable length (9.0 m). This probe is compatible with Bently Nevada 3300 XL monitor racks. For applications needing armored cable, consider the non-armored version as specified. UBEST Automation stocks genuine Bently Nevada parts with fast shipping. Contact us to confirm stock availability and compatibility with your existing monitoring system.