Product Introduction
The Bently Nevada 330904-02-10-70-01-00 is a 3300 NSv proximity probe engineered for reliable vibration and position monitoring in demanding industrial environments. This model features an M8X1 threaded case with armor, a 20 mm unthreaded length, a 100 mm overall case length, and a 7.0-meter (23.0 ft) total cable length. It uses a miniature coaxial ClickLoc connector with connector protector and standard cable, ensuring secure and stable signal transmission.
Key Features & Benefits
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Enhanced Chemical Resistance: The NSv probe design offers superior chemical resistance compared to the previous 3300 RAM probe, making it suitable for process compressor applications.
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Interchangeable Design: Mechanically and electrically compatible with Bently Nevada's previous 3300 RAM probe and extension cable, simplifying upgrades.
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Superior Side-View Characteristics: Provides better side-view performance than the 3000-series 190 probe when gapping at the same distance from the target.
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Robust Construction: Probe tip made of polyphenylene sulfide (PPS) and case made of AISI 304 stainless steel for durability.
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Wide Temperature Range: Operates and stores from -52°C to +177°C (-62°F to +351°F).
Technical Specifications
| Parameter |
Value |
| Model |
330904 - 3300 NSv Probe, M8X1 thread, with armor |
| Unthreaded Length |
20 mm |
| Overall Case Length |
100 mm |
| Total Length |
7.0 meters (23.0 feet) |
| Connector |
Miniature coaxial ClickLoc with connector protector |
| Probe DC Resistance (7.0 m) |
5.9 ± 0.9 ohms |
| Extension Cable DC Resistance |
Center conductor: 0.220 Ω/m (0.067 Ω/ft); Shield: 0.066 Ω/m (0.020 Ω/ft) |
| Extension Cable Capacitance |
69.9 pF/m (21.3 pF/ft) typical |
| Field Wiring |
0.2 to 1.5 mm² (16 to 24 AWG); 3-conductor shielded triad recommended; max length 305 m (1000 ft) |
| Linear Range |
1.5 mm (60 mils) from approximately 0.25 to 1.75 mm (10 to 70 mils) (–1 to –13 Vdc) |
| Recommended Gap Setting |
1.0 mm (40 mils) |
| Incremental Scale Factor (ISF) |
7.87 V/mm (200 mV/mil) +12.5%/-20% including interchangeability error |
| Deviation from Best Fit Straight Line (DSL) |
Less than ±0.06 mm (±2.3 mils) |
| Frequency Response |
0 to 10 kHz: +0, -3 dB typical (with up to 305 m field wiring) |
| Target Size (flat) |
Minimum: 8.9 mm (0.35 in) diameter; Recommended: 13 mm (0.5 in) diameter |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel |
| Probe Cable |
75 Ω coaxial, FEP insulated; lengths: 0.5, 1, 5, or 7 meters |
| Maximum Torque |
0.56 N•m (5 in•lb) |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
| Operating/Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Probe Case Torque (M8X1) |
Max rated: 7.3 N•m (65 in•lb); Recommended: 5.1 N•m (45 in•lb) |
| Max Thread Engagement |
12 mm |
Applications
The 330904-02-10-70-01-00 is ideal for vibration monitoring on rotating machinery such as compressors, turbines, and pumps. Its enhanced chemical resistance makes it particularly suited for process compressor applications where exposure to aggressive media is a concern. The probe's linear range and scale factor ensure accurate displacement measurements for shaft vibration and axial position monitoring.
Installation & Setup
Install the probe with finger-tight torque; do not exceed 0.56 N•m (5 in•lb). For M8X1 threads, the recommended torque is 5.1 N•m (45 in•lb) with a maximum of 7.3 N•m (65 in•lb). Ensure the minimum bend radius of 25.4 mm (1.0 in) is respected for the cable. Field wiring should use a three-conductor shielded triad cable with a maximum length of 305 meters (1000 feet) between the Proximitor Sensor and the monitor. For axial position measurements on shafts smaller than 13 mm (0.5 in), note that scale factor may change; reduce the gap to minimize this effect.
Maintenance & Reliability
Regularly inspect the probe tip and cable for damage or wear. The probe is designed to seal differential pressure between the tip and case using a Viton O-ring; however, it is not pressure tested prior to shipment. If pressure seal verification is required for your application, contact the custom design department. Operating and storage temperature range of -52°C to +177°C allows use in severe environments. The robust stainless steel case and PPS tip provide long-term reliability.
Selection Guide
When selecting a replacement or spare, verify the exact part number 330904-02-10-70-01-00 to ensure compatibility with your system. This probe is interchangeable with the previous 3300 RAM probe, but always confirm mechanical and electrical compatibility with your existing extension cable and Proximitor. For expert assistance and genuine Bently Nevada parts, choose PLC Source PRO as your trusted supplier.