330173-08-18-10-02-00 Bently Nevada 3300 5mm Probe, 1m

Product Overview: Bently Nevada 330173-08-18-10-02-00

The Bently Nevada 330173-08-18-10-02-00 is a 3300 series 5mm proximity probe engineered for exact displacement and vibration measurement in rotating machinery. With an M8 x 1 thread and a 1.0 metre total length, this probe integrates seamlessly into turbine, compressor, and motor monitoring systems. Its unthreaded length of 80 mm and overall case length of 180 mm provide flexible mounting in tight spaces. Because the probe operates with a -17.5 Vdc to -26 Vdc power supply and a maximum consumption of 12 mA, it delivers reliable performance with minimal power draw. The miniature coaxial ClickLoc connector ensures a secure, low-noise signal path. Weighing just 0.323 kg, the probe reduces mechanical load on mounting brackets. For engineers seeking engineering-grade precision, this probe offers verified specifications that translate directly into lower maintenance costs and reduced downtime.

Key Features and Cost-Efficiency of the 330173-08-18-10-02-00

• Input Voltage: Requires -17.5 Vdc to -26 Vdc at 12 mA maximum, minimizing power supply costs.
• Output Resistance: 50 Ω ensures stable signal transmission over long cable runs.
• Isolation: Probe DC resistance from center to outer conductor is 7.59 ± 0.50 Ω, providing inherent noise immunity.
• Probe Tip Material: Polyphenylene sulfide (PPS) resists wear, extending replacement intervals.
• Probe Case Material: AISI 304 stainless steel offers corrosion resistance in harsh environments.
• Temperature Range: -35°C to +177°C (-31°F to +351°F) supports high-temperature applications without cooling.
• Tensile Strength: 222 N (50 lbf) probe case to probe lead, reducing connector failure risk.
• Cable Bend Radius: 25.4 mm (1.0 in) minimum, preventing cable damage during installation.

Each specification contributes to lower total cost of ownership. For example, the low supply sensitivity of less than 2 mV per volt change in input voltage reduces calibration frequency. Additionally, the 75 Ω triaxial FEP-insulated cable resists electromagnetic interference, which minimizes false alarms and unnecessary maintenance trips.

Applications and Use Cases

This probe excels in condition monitoring of steam turbines, gas turbines, and centrifugal compressors. Because it measures radial vibration and axial position, it helps prevent catastrophic failures. In a typical power plant, using this probe reduces unplanned outages by catching rotor misalignment early. Furthermore, its 1.0 metre length suits installations where the proximitor is mounted remotely. The M8 x 1 thread fits standard mounting holes, simplifying retrofits. Consequently, maintenance teams save on labor and adapter costs. For oil and gas applications, the stainless steel case withstands corrosive atmospheres, extending service life.

Installation and Setup

Install the probe using the recommended torque of 5.1 N·m (45 in·lb) to avoid thread damage. The maximum torque is 7.3 N·m (65 in·lb). Ensure a minimum cable bend radius of 25.4 mm to prevent signal degradation. Connect the miniature coaxial ClickLoc connector to the extension cable, and verify the gap at 1.27 mm (50 mils) using a feeler gauge. Because the probe requires a -24 Vdc nominal supply, confirm polarity before powering. Always follow the machinery protection system manual for wiring details.

Maintenance and Reliability

Periodically inspect the probe tip for wear or deposits. Clean only with a soft cloth and approved solvent. Since the probe operates from -35°C to +177°C, avoid exposing it to temperatures below -34°C, which may cause premature pressure seal failure. The PPS tip and stainless steel case resist most industrial contaminants. However, in high-vibration areas, check the connector torque every six months. By preventing unexpected failures, this probe reduces downtime costs significantly.