Product Overview
In rotating machinery monitoring, precise vibration and position sensing are critical to preventing unplanned downtime. The Bently Nevada 330904-00-10-70-02-00 3300 NSv Proximity Probe delivers reliable, accurate measurements for critical asset protection. This industrial automation module is part of the 3300 NSv series, designed for eddy-current proximity sensing in turbomachinery, compressors, and other high-speed rotating equipment.
The 330904-00-10-70-02-00 features a 7.0-meter (23.0 feet) total length, M8X1 threaded case, and a miniature coaxial ClickLoc connector for secure, quick installation. It offers enhanced chemical resistance compared to previous 3300 RAM probes, making it suitable for process compressor applications where aggressive media may be present.
Key Technical Specifications
| Parameter |
Value |
| Probe Length |
7.0 m (23.0 ft) |
| Probe DC Resistance (center to outer conductor) |
5.9 ± 0.9 ohms |
| Linear Range |
1.5 mm (60 mils), from 0.25 to 1.75 mm |
| Recommended Gap Setting |
1.0 mm (40 mils) |
| Incremental Scale Factor (ISF) |
7.87 V/mm (200 mV/mil) +12.5%/-20% |
| 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 |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel |
| Operating/Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Maximum Torque |
0.56 N•m (5 in•lb) recommended finger tight |
| Minimum Bend Radius |
25.4 mm (1.0 in) |
Performance and Reliability
The 330904-00-10-70-02-00 offers a linear range of 1.5 mm with a recommended gap setting of 1.0 mm, ensuring accurate measurement over a wide operating window. Its incremental scale factor of 7.87 V/mm provides consistent output, while the deviation from best fit straight line remains below ±0.06 mm, guaranteeing high precision.
With a frequency response of 0 to 10 kHz, this probe captures dynamic vibration signals effectively. The probe tip is made of PPS, offering excellent chemical resistance, and the case is constructed from AISI 304 stainless steel for durability in harsh environments.
Applications
This industrial automation module is ideal for:
- Vibration monitoring on centrifugal and reciprocating compressors
- Axial position measurement on turbines and generators
- Shaft radial vibration monitoring in pumps and motors
- Process compressor applications where chemical resistance is required
Its enhanced chemical resistance and robust construction make the 330904-00-10-70-02-00 a preferred choice for process compressors operating in aggressive environments.
Installation and Setup
Proper installation is essential for accurate readings. Follow these guidelines:
- Use the recommended torque: finger tight, with a maximum of 0.56 N•m (5 in•lb).
- Ensure the target surface meets the minimum diameter of 8.9 mm (0.35 in) for flat targets; a recommended minimum of 13 mm (0.5 in) is advised.
- Maintain the recommended gap setting of 1.0 mm (40 mils) for optimal linearity.
- Route the probe cable with a minimum bend radius of 25.4 mm (1.0 in) to prevent damage.
For field wiring, use a three-conductor shielded triad cable with a maximum length of 305 meters (1,000 feet) between the Proximitor Sensor and the monitor.
Maintenance and Longevity
Routine inspection of the probe cable and connector is recommended to detect wear or damage. The probe's PPS tip and stainless steel case offer high resistance to chemicals and corrosion, extending service life in demanding conditions. Operating within the specified temperature range (-52°C to +177°C) ensures reliable performance.
Because the probe is designed to seal differential pressure between tip and case, verify the O-ring integrity during maintenance. If pressure testing is required, contact the custom design department.
Compatibility and Integration
The 330904-00-10-70-02-00 is mechanically and electrically interchangeable with Bently Nevada's previous 3300 RAM proximity probe and extension cable, simplifying upgrades. It works with 3300 XL NSv Proximitor Sensors and is compatible with standard Bently Nevada monitoring systems.
Selection Guide
When selecting this probe, confirm the total length (7.0 m), thread type (M8X1), and connector option (ClickLoc) match your application requirements. Ensure the target material and size are suitable for eddy-current sensing. For assistance with your specific setup, PLC Source PRO offers expert guidance and genuine Bently Nevada parts.