Bently Nevada 330101-48-71-20-02-00 – 3300 XL 8 mm Proximity Probe System

Complete Suffix Information – Model Breakdown

330101-48-71-20-02-00 — full configuration tree

• 330101 : 3300 XL 8 mm Probe, 3/8-24 UNF thread, without armor
  • 48 → Unthreaded Length Option: 4.8 inches
  • 71 → Overall Case Length Option: 7.1 inches
  • 20 → Total Length Option: 2.0 meters (6.6 feet)
  • 02 → Connector and Cable-Type: Miniature coaxial ClickLoc™ connector, standard cable
  • 00 → Not required (no special options)

Technical Specifications – High-Performance Eddy Current Sensing

• Brand & Model: Bently Nevada 330101-48-71-20-02-00 – 3300 XL 8 mm Proximity Probe System.
• Linear Range: 2 mm (80 mils) from 0.25 mm to 2.3 mm (10 to 90 mils) with output –1 to –17 Vdc.
• Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±5% (1 or 5 m system) including interchangeability error.
• Recommended Gap (Radial Vibration): –9 Vdc ≈ 1.27 mm (50 mils).
• Deviation from Straight Line (DSL): ≤ ±0.025 mm (±1 mil) for standard 1/5 m system at 0°C to +45°C.
• Probe DC Resistance (RPROBE): 7.88 ± 0.50 Ω (center to outer conductor for 2.0 m length).
• Extension Cable Capacitance: 69.9 pF/m (21.3 pF/ft) typical.
• Field Wiring: 0.2 to 1.5 mm² (16–24 AWG), 3-conductor shielded triad, maximum length 305 m (1000 ft) to monitor.

Temperature & Environmental Robustness

• Standard Probe Operating Temp: –52°C to +177°C (–62°F to +350°F).
• Extended Temperature Range (ETR) Probe Tip: –52°C to +218°C (–62°F to +425°F); cable & connector withstand –51°C to +260°C (–60°F to +500°F).
• Pressure Sealing: Viton® O-ring seals differential pressure between tip and case.
• Relative Humidity Tolerance: less than 3% change in ASF after 56 days at 93% humidity (IEC 68-2-3).
• Probe Case Material: AISI 303 or 304 stainless steel (SST) for corrosion resistance.
• Weight: 323 g/m (11.4 oz) approximate.

Frequently Asked Questions (FAQ)

What is the total system linearity for the 3300 XL 8 mm probe?

• The standard 1 or 5 meter system provides ≤ ±0.025 mm (±1 mil) deviation over the linear range from 0°C to +45°C.

Can I use this probe with an existing 3300 XL extension cable?

• Yes, the 330101-48-71-20-02-00 uses the standard ClickLoc™ interface, compatible with all 3300 XL extension cables and Proximitor sensors.

Does the probe require a specific target material?

• The probe calibrates to AISI 4140 steel. For other materials, apply a material correction factor; contact technical support for assistance.

What is the maximum field wiring length to the monitor?

• You can run up to 305 meters (1000 feet) of shielded triad cable between the Proximitor sensor and the monitor without signal degradation below high frequency roll-off.

How does the Extended Temperature Range differ?

• ETR probes sustain tip temperatures up to +218°C (+425°F) and maintain ±6.5% scale factor accuracy over the full range.

Is the pressure seal tested before shipping?

• Probes are not pressure tested as standard. Contact the custom design department if your application requires a validated pressure seal test.

For optimal machine protection, rely on the Bently Nevada 330101-48-71-20-02-00 probe. This 3300 XL 8 mm Probe excels in steam turbines, compressors, and generators. Browse the full 3300 XL 8mm Probe series for compatible accessories and replacement parts.

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