Product Overview
The Bently Nevada 330903-00-04-70-01-05 is a 3300 NSv proximity probe engineered for precise vibration and position monitoring in critical rotating machinery. This industrial automation module delivers reliable performance in process compressor applications where chemical resistance is essential. With a 7.0-meter total length and M8X1 thread, the 330903-00-04-70-01-05 offers straightforward installation and dependable signal integrity.
Part of the 3300 NSv series, this probe is mechanically and electrically interchangeable with previous 3300 RAM models, simplifying upgrades. The 330903-00-04-70-01-05 features a miniature coaxial ClickLoc connector with connector protector, ensuring secure connections in demanding environments.
Key Specifications
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Probe Length: 7.0 meters (23.0 feet)
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DC Resistance (RPROBE): 5.9 ± 0.9 ohms
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Linear Range: 1.5 mm (60 mils), from 0.25 to 1.75 mm
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Recommended Gap: 1.0 mm (40 mils)
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Incremental Scale Factor: 7.87 V/mm (200 mV/mil)
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Frequency Response: 0 to 10 kHz (+0, -3 dB typical)
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Probe Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 304 stainless steel
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Operating Temperature: -52°C to +177°C
Applications
The 330903-00-04-70-01-05 excels in monitoring shaft vibration and axial position in turbines, compressors, and pumps. Its increased chemical resistance compared to the 3300 RAM probe makes it ideal for process compressor applications where exposure to aggressive media occurs. The side-view characteristics are superior to the 3000-series 190 probe, providing more accurate gapping at the same distance from the target.
For axial position measurements on shafts smaller than 13 mm (0.5 in) diameter, users may notice a change in scale factor; reducing the gap helps limit this effect. This industrial automation module supports reliable condition monitoring, helping to prevent unplanned downtime.
Installation & Setup
Mount the 330903-00-04-70-01-05 with the recommended torque of finger tight, and do not exceed the maximum torque of 0.56 N•m (5 in•lb). Ensure the minimum bend radius of 25.4 mm (1.0 in) is maintained for the probe cable. For the probe case threads (M8X1), the maximum thread engagement is 12 mm. The connector-to-connector torque should be between 5.1 N•m (45 in•lb) recommended and 7.3 N•m (65 in•lb) maximum.
Field wiring should use a three-conductor shielded triad cable with 0.2 to 1.5 mm² (16 to 24 AWG) conductors. The maximum field wiring length between the 3300 XL NSv Proximitor Sensor and the monitor is 305 meters (1,000 feet). Refer to frequency response graphs for signal rolloff at high frequencies with longer wiring.
Maintenance & Reliability
The 330903-00-04-70-01-05 is built for long-term reliability. The probe case is AISI 304 stainless steel, and the tip is PPS, offering excellent resistance to process chemicals. The Viton O-ring seals differential pressure between the probe tip and case. Although probes are not pressure tested prior to shipment, the design ensures dependable sealing.
Regular inspection of the cable and connector is recommended to prevent damage from vibration or environmental exposure. The operating and storage temperature range of -52°C to +177°C allows use in extreme conditions.
Selection Guide
When selecting this industrial automation module, verify your required probe length, thread type, and connector options. The 330903-00-04-70-01-05 includes the -00 unthreaded length (00 mm), -04 overall case length (40 mm), and a 7.0-meter total length with a miniature coaxial ClickLoc connector (option 01) and multiple agency approvals (option 05).
For genuine, factory-packed units with a 12-month warranty, choose PLC Source PRO as your trusted supplier. Ensure this model matches your existing 3300 NSv system requirements.