Product Introduction
When machinery vibration monitoring fails due to probe degradation, the Bently Nevada 330707-00-62-90-01-00 3300 XL 11 mm Proximity Probe provides reliable measurement even in harsh environments. This probe is part of the 3300 XL series, designed for eddy current measurement of shaft vibration and position. The 330707-00-62-90-01-00 features a 5/8-18 UNF thread without armor, with a 9.0 meter cable and miniature coaxial ClickLoc connector with connector protector. It is manufactured in the USA to Bently Nevada’s high standards.
Technical Specifications
| Parameter |
Value |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel (SST) |
| Probe Cable Specification |
75 Ω triaxial, FEP insulated, 9.0 meters total length |
| Operating & Storage Temperature |
-51°C to +177°C (-60°F to +351°F) |
| Probe DC Resistance (9.0m) |
8.5 ± 1.1 ohms (center to outer conductor) |
| Probe Case Thread |
5/8-18 UNF |
| Maximum Thread Engagement |
0.938 in (23.8 mm) |
| Probe Case Torque (Recommended) |
15.2 N·m (133 in·lb) |
| Probe Case Torque (Maximum) |
45.2 N·m (400 in·lb) |
| Connector Torque (Recommended) |
Finger tight |
| Minimum Bend Radius (cable) |
25.4 mm (1.0 in) |
| Shipping Weight |
0.17 kg |
Industry Applications
The Bently Nevada 330707-00-62-90-01-00 3300 XL Proximity Probe is ideal for monitoring radial vibration and axial position in turbines, compressors, pumps, and other rotating machinery. Its wide temperature range and robust sealing make it suitable for high-temperature environments. The probe’s 9.0 meter cable allows flexible installation in remote locations. By providing accurate eddy current measurements, it helps prevent catastrophic failure in critical equipment.
Installation Guide
Proper installation ensures optimal performance. Ensure the mounting thread is clean and apply the recommended torque of 15.2 N·m (133 in·lb) to the probe case. Do not exceed 45.2 N·m (400 in·lb). The connector should be finger tight only (maximum 0.565 N·m). Maintain a minimum cable bend radius of 25.4 mm to avoid damage. The probe case thread engagement must not exceed 0.938 inches. For sensitive applications, avoid exposing the probe to temperatures below -34°C to protect the pressure seal.
Troubleshooting & Common Issues
Common issues with proximity probes include signal degradation due to cable damage or connector looseness. Always check the connector torque and cable integrity. The Bently Nevada 330707-00-62-90-01-00 probe uses a Viton O-ring for sealing; if the pressure seal fails, inspect the O-ring and mounting surface. Operating the probe below -34°C can accelerate seal failure. Ensure you purchase from a trusted supplier like UBEST Automation to obtain genuine parts and avoid counterfeit issues.