Product Overview
The Bently Nevada 330191-00-16-90-CN 3300 XL 8 mm Extended Temperature Range (ETR) proximity probe is designed for reliable vibration and position measurement in harsh industrial environments. This model features a 3/8-24 UNF thread, no armor, a 1.6 in overall case length, and a total cable length of 9.0 meters (29.5 feet). It incorporates patented TipLoc and CableLoc technologies that dramatically improve mechanical robustness and prevent common failure modes such as probe tip separation and cable pull-out. For applications requiring leak prevention, an optional FluidLoc cable is available (not included with this model).
Technical Specifications
| Parameter |
Value |
| Power Supply |
-17.5 Vdc to -26 Vdc (nonincendive circuit), -23 Vdc to -26 Vdc with barriers; 12 mA max consumption |
| Supply Sensitivity |
Less than 2 mV change per volt change in input voltage |
| Output Resistance |
50 Ω |
| Probe DC Resistance (RPROBE) |
9.87 ± 0.50 Ω at 9.0 m length |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Cable Type |
75 Ω triaxial, FEP insulated (standard) or PFA insulated (extended temperature range) – 9.0 m total |
| Tensile Strength (Max Rated) |
330 N (75 lbf) probe case to lead; 270 N (60 lbf) at lead to extension cable connectors |
| Connector Material |
Gold-plated brass or gold-plated beryllium copper |
| Max Connector Torque |
0.565 N•m (5 in•lbf) |
| Thread |
3/8-24 UNF; maximum thread engagement 0.563 in |
| Weight |
323 g/m (11.4 oz per meter) |
| Temperature Ranges (Probe Only) |
-55°C to +232°C (T1); lower for higher T classes – see schedule |
Industry Applications
The Bently Nevada 330191-00-16-90-CN excels in rotating machinery monitoring – turbines, compressors, pumps, and motors. Its 8 mm probe diameter and rugged PPS tip withstand physical abuse in high-vibration environments. The 9.0 m cable length suits installations where the monitor is distant from the measurement point. The patented CableLoc design prevents cable failure due to repeated flexing or tension, reducing unplanned downtime – a key advantage over older probe designs where cable detachment was a common issue.
Maintenance & Reliability
Regular inspection of the probe cable and connector is recommended. Check for signs of wear, kinking, or damage to the FEP/PFA insulation. The Viton® O‑ring seal provides differential pressure sealing between the probe tip and case; replace the O‑ring if leakage is suspected. The probe case (AISI 303/304 SST) resists corrosion, but in aggressive chemical environments, consider optional armor (not included). The gold-plated connectors should be cleaned with a lint-free cloth and isopropyl alcohol if oxidation appears. With proper care, the 330191-00-16-90-CN offers extended service life, directly reducing total cost of ownership.
Selection Guide & Purchasing Advice
Before purchasing the Bently Nevada 330191-00-16-90-CN, verify the target machine’s thread requirement (3/8-24 UNF) and total cable length needed (this unit is fixed at 9.0 m). Confirm that the monitor or system is compatible with 75 Ω triaxial probes and requires the CN country-specific approval. For installations where oil leakage through the cable interior is a concern, consider ordering the FluidLoc cable option separately. PLC Source PRO supplies this probe as new and original in factory packing with a 12-month warranty. For assistance in matching the probe to your system, contact our technical sales team.