330191-00-70-05-CN Bently Nevada 3300 XL 8mm ETR Proximity Probe

Product Introduction

The Bently Nevada 330191-00-70-05-CN is an Extended Temperature Range (ETR) 8mm proximity probe, specifically engineered for high-performance vibration and position monitoring. This 3300 XL series sensor utilizes patented TipLoc and CableLoc technologies, ensuring a mechanical bond capable of withstanding 330 N of pull strength. As an ETR variant, it features PFA insulated cabling to maintain signal integrity in thermal environments exceeding standard limits. 

Configuration Hierarchy: Suffix Tree

• 330191 — 3300 XL 8mm ETR Probe (3/8-24 UNF Thread)
  • └─ 00 — Unthreaded Length: 0.0 inches
  • └─ 70 — Overall Case Length: 7.0 inches
  • └─ 05 — Total Length: 0.5 meter (1.6 feet)
  • └─ CN — Agency Approval: Country Specific (China/Ex)

Engineering & Technical Specifications

• Brand: Bently Nevada
• Model: 330191-00-70-05-CN
• Series: 3300 XL 8mm ETR
• Case Material: AISI 303 or 304 Stainless Steel (SST)
• Tip Material: Polyphenylene sulfide (PPS) with high-density encapsulation
• Electrical Cable: 75Ω triaxial PFA insulated (Extended Temp Range)
• DC Resistance: 7.45 ± 0.50 Ω (Center Conductor to Outer)
• Tensile Strength: 330 N (75 lbf) probe-to-lead maximum rating
• Sealing: Integrated Viton® O-ring for differential pressure integrity
• Output Impedance: 50 Ω

Global PLC Spare HUB's Insight

The 330191-00-70-05-CN is the "Heavy-Duty Specialist" for hot-zone monitoring. While standard FEP cables degrade at extreme temperatures, the PFA insulation on this ETR probe remains stable, preventing insulation brittleness. The 8mm diameter provides a much higher "robustness factor" compared to 5mm probes, making it our primary recommendation for locations prone to physical abuse. The CN approval suffix ensures compliance for high-spec projects requiring localized hazardous zone certification.

Typical Application & Diagnostic Capability

• Machine Types: Large gas turbines, industrial process compressors, and boiler feed pumps.
• Diagnostic Range: Provides sub-micron resolution for radial vibration, axial thrust, and eccentricity analysis.
• Compatibility: Designed to integrate with Bently Nevada 3500/42M monitors via a matching ETR extension cable.

Logistics & Procurement

• Condition: New & Original in Factory Packing (Made in U.S.A.)
• Warranty: 12 Months Factory Warranty
• Dispatch: Secure fulfillment within 24-48 hours
• Courier: Fast global shipping via FedEx, UPS, or DHL

Selection FAQ (Field Engineering)

• Q: Why choose the 8mm 330191-00-70-05-CN over a 5mm probe?
• A: The 8mm design features thicker PPS encapsulation, offering significantly better protection against mechanical fatigue and physical impact in turbulent environments.
• Q: Is this 0.5-meter probe compatible with a standard 5-meter system?
• A: Yes, but it must be paired with a 4.5-meter extension cable to reach the total 5.0-meter electrical system calibration required by the Proximitor.
• Q: What is the benefit of PFA insulation in the ETR model?
• A: PFA (Perfluoroalkoxy) allows the probe cable to operate in higher ambient temperatures than standard FEP without compromising signal linearity.
• Q: How do I verify the electrical health of the 330191-00-70-05-CN?
• A: Use a calibrated multimeter to check the resistance between the center and outer conductor; it should read 7.45 ± 0.50 Ω for this 0.5m lead length.
• Q: Does the "CN" suffix change the physical mounting?
• A: No, the CN suffix indicates specific regional hazardous area approvals (like CCC Ex); the physical 3/8-24 UNF threads and electrical performance remain standard.

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