Bently Nevada 330703-050-120-10-02-00 3300 XL 11 mm Proximity Probe – Precision Sensor with Extended Case

Ordering Information & Complete Suffix Tree

• 330703 – 3300 XL 11 mm Probe, M14 x 1.5 thread, without armor
• Unthreaded Length Option: 050 – 50 mm
• Overall Case Length Option: 120 – 120 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 & Core Parameters

• Brand: Bently Nevada
• Model: 3300 XL 11 mm Proximity Probes,  330703-050-120-10-02-00 330703 series
• Probe DC Resistance: 5.9 ± 0.5 ohms (1.0 meter length, center to outer conductor)
• 60 Hz Magnetic Field Immunity: 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: 75 Ω triaxial, FEP insulated; available in 1, 5, or 9 meter lengths
• Probe Case Torque: Maximum 63.3 N•m (560 in•lb); Recommended 21.1 N•m (187 in•lb)
• Probe Case Thread: M14 x 1.5; maximum thread engagement: 21 mm
• Operating Temperature Range: -52°C to +177°C (-62°F to +351°F)
  • Exposure below -34°C (30°F) may damage the pressure seal

Environmental Durability & Noise Resistance

• Wide operating temperature from -52°C to +177°C ensures reliable performance in extreme conditions.
• Strong immunity to 60 Hz magnetic fields up to 300 Gauss minimizes output deviation across standard gaps.
• PPS probe tip and AISI 304 SST case provide excellent corrosion and chemical resistance.
• FEP-insulated triaxial cable offers superior dielectric strength and reduces electromagnetic interference.
• The 330703 model suits 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.
• What are the unthreaded and case lengths?
  Unthreaded length is 50 mm; overall case length is 120 mm for extended reach applications.
• 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.
• Can I use an extension cable with this probe?
  Yes, the 3300 XL 11 mm system supports extension cables. Use Bently Nevada approved cables for accuracy.
• How do I verify 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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