Bently Nevada 330703 3300 XL 11 mm Proximity Probe – Precision Measurement for Critical Machinery

Ordering Information & Suffix Configuration

• 330703 – 3300 XL 11 mm Probe, M14 x 1.5 thread, without armor
• Unthreaded Length Option: 000 – 00 mm
• Overall Case Length Option: 100 – 100 mm
• Total Length Option: 10 – 1.0 metres (3.3 feet)
• Connector and Cable Type: 02 – Miniature coaxial ClickLoc connector, standard cable
• Agency Approval Option: 00 – Not required

Technical Specifications – Brand, Model & Key Parameters

• Brand: Bently Nevada
• Model: 3300 XL 11 mm Proximity Probe, 330703 series
• Probe DC Resistance: 5.9 ± 0.5 ohms (1.0 meter length, center conductor to outer conductor)
• Effects of 60 Hz Magnetic Fields: Up to 300 Gauss (5 m system)
  • Gap 0.5 mm (20 mil): 0.001 mV pp/gauss
  • Gap 2.5 mm (100 mil): 0.009 mV pp/gauss
  • Gap 4.6 mm (180 mil): 0.027 mV pp/gauss
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 304 stainless steel (SST)
• Probe Cable Specification: 75 Ω triaxial, FEP insulated; total lengths: 1, 5, or 9 meters
• Probe Case Torque: Maximum rated 63.3 N•m (560 in•lb); recommended 21.1 N•m (187 in•lb)
• Probe Case Thread: M14 x 1.5; maximum length of thread engagement: 21 mm
• Temperature Range (Operating & Storage): -52°C to +177°C (-62°F to +351°F)
  • Note: Exposing probe below -34°C (30°F) may cause premature seal failure
• Temperature Schedule – Ambient (Probe Only):
  • EPL Ga/Gc: T1 (-55°C to +232°C), T2 (-55°C to +177°C), T3 (-55°C to +120°C), T4 (-55°C to +80°C), T5 (-55°C to +40°C)
  • EPL Dc: T280°C @ Ta (-55°C to +232°C), T225°C @ Ta (-55°C to +177°C), T170°C @ Ta (-55°C to +120°C), T130°C @ Ta (-55°C to +80°C), T105°C @ Ta (-55°C to +100°C), T90°C @ Ta (-55°C to +40°C)

Environmental Durability & Noise Immunity

• Wide operating temperature: -52°C to +177°C ensures reliable performance in harsh industrial settings.
• Strong resistance to 60 Hz magnetic fields up to 300 gauss; minimal output deviation across standard gaps.
• Probe tip made of rugged PPS and case of AISI 304 SST provide excellent corrosion resistance.
• FEP insulated triaxial cable offers superior dielectric strength and reduces electromagnetic interference.
• Designed for continuous operation in steam turbines, gas compressors, and large rotating machinery.

Frequently Asked Questions (FAQ)

• What is the total length of this 330703 probe?
  The total length option 10 equals 1.0 metre (3.3 feet), including the integral cable and ClickLoc connector.
• Can I use this probe with an extension cable?
  Yes, the 3300 XL 11 mm system supports extension cables; ensure you use Bently Nevada approved cables for accurate readings.
• What is the thread size and torque requirement?
  Thread is M14 x 1.5. Recommended torque is 21.1 N•m; maximum is 63.3 N•m to avoid damaging the probe case.
• Is this probe suitable for hazardous area installations?
  Refer to temperature classification T codes (T1 to T5). This probe meets EPL Ga, Gc, and Dc requirements with proper ambient limits.
• How do I confirm probe resistance?
  DC resistance from center conductor to outer conductor measures 5.9 ± 0.5 ohms for the 1.0 meter version.

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Contact: sales@ubestplc.com | Phone: +86 180 3000 5825