330191-00-16-05-CN | Bently Nevada 8 mm ETR Probe, 0.5 m

What Is the Bently Nevada 330191-00-16-05-CN?

The Bently Nevada 330191-00-16-05-CN is a 3300 XL 8 mm ETR proximity probe engineered for precise radial and axial displacement measurement on rotating machinery. Because the probe uses an Eddy Current Transducer principle, it delivers non-contact measurement of shaft vibration, position, and speed. In addition, the 0.5 meter total length suits installations where the probe mounts close to the monitor. Consequently, engineers specify this probe for steam turbines, compressors, and large motors where measurement integrity is critical.

Key Specifications of the 330191-00-16-05-CN

• Model: 330191 — 3300 XL 8 mm ETR Probe, 3/8-24 UNF thread, without armor
• Total Length: 0.5 meter (1.6 feet)
• Overall Case Length: 1.6 in
• Unthreaded Length: Minimum 0.0 in
• Input Voltage: -17.5 Vdc to -26 Vdc
• Output Resistance: 50 Ω
• Nominal Probe DC Resistance: 7.45 Ω ± 0.50 Ω
• Probe Case Material: AISI 303 or 304 stainless steel
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Agency Approval: CN — Country Specific Approval

Notably, the 8 mm probe tip provides a thicker encapsulation of the probe coil in molded PPS plastic. As a result, the probe resists physical abuse better than smaller-diameter designs. Furthermore, the patented TipLoc molding method creates a robust bond between tip and body, while the CableLoc design delivers 330 N (75 lbf) pull strength.

Why the 330191-00-16-05-CN Suits Critical Machinery

Because the probe seals differential pressure between tip and case with a Viton O-ring, it tolerates demanding environments. Meanwhile, the 75 Ω triaxial FEP-insulated cable maintains signal integrity across the 0.5 meter run. In addition, the probe operates with Bently Nevada extension cables and Proximitors to meet entity parameters. Therefore, the 330191-00-16-05-CN delivers engineering-grade precision for vibration monitoring systems.

Installation Guidance

Mount the probe using the 3/8-24 UNF thread, and engage threads to a maximum of 0.563 in. Because one-meter systems do not use an extension cable, verify your total system length before ordering. Additionally, observe the -17.5 Vdc to -26 Vdc supply requirement; operation above -23.5 Vdc can reduce linear range. For barrier installations, supply -23 Vdc to -26 Vdc.