Product Introduction
When vibration monitoring accuracy is critical, the Bently Nevada 330191-00-40-15-05 provides reliable proximity sensing for machinery protection. This 3300 XL 8mm ETR probe is designed for non-contact shaft displacement and vibration measurement in rotating equipment. The ordering breakdown clarifies the configuration: unthreaded length 0.0 in (00), overall case length 4.0 in (40), total length 1.5 m (4.9 ft) (15), and agency approvals CSA, ATEX, IECEx (05).
Technical Specifications
| Parameter |
Value |
| Unthreaded Length Option |
00 - 0.0 in |
| Overall Case Length Option |
40 - 4.0 in |
| Total Length Option |
15 = 1.5 meter (4.9 feet) |
| Agency Approval Option |
05 = CSA, ATEX, IECEx |
| Power Requirement |
-17.5 Vdc to -26 Vdc (nonincendive circuit) or -23 Vdc to -26 Vdc with barriers |
| Supply Sensitivity |
Less than 2 mV change per volt change |
| Output Resistance |
50 Ω |
| Nominal Probe DC Resistance (RPROBE) at 1.5 m |
7.73 ± 0.50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Standard Cable |
75Ω triaxial, FEP insulated |
| Extended Temperature Range Cable |
75Ω triaxial, PFA insulated |
| Armor (optional) |
Flexible AISI 302/304 SST with FEP jacket |
| Tensile Strength (case to lead) |
330 N (75 lbf) |
| Tensile Strength (lead to extension cable connector) |
270 N (60 lbf) |
| Connector Material |
Gold-plated brass or beryllium copper |
| Maximum Connector Torque |
0.565 N·m (5 in·lbf) |
| Probe Case Thread |
3/8-24 UNF |
| Maximum Length of Thread Engagement |
0.563 in |
| Probe Weight |
323 g/m (11.4 oz) |
| Sealing Material |
Viton® O-ring |
Design Innovations for Reliability
The Bently Nevada 330191-00-40-15-05 incorporates patented TipLoc molding to create a robust bond between the probe tip and body, preventing tip detachment—a common failure mode in older designs. The CableLoc design delivers 330 N pull strength to secure the cable and tip. An optional FluidLoc cable option prevents oil and other liquids from leaking through the cable interior, ideal for wet environments.
Industry Applications
This 8mm probe excels in machines where physical robustness is essential. Typical applications include steam turbines, centrifugal compressors, and large pumps. The thicker PPS encapsulation and larger diameter body provide superior resistance to mechanical abuse. For example, in gas compressor trains, the Bently Nevada 330191-00-40-15-05 offers stable output over a wide temperature range (-55°C to +232°C for T1 classification), ensuring consistent data for protection systems.
Installation & Setup Guidance
Mount the probe with the 3/8-24 UNF thread, engaging a maximum of 0.563 in. Torque the connector to 0.565 N·m (5 in·lbf). The Viton O-ring seals differential pressure between tip and case. For one-meter systems, no extension cable is required. Use only BN extension cables and connect to a BN Prox monitoring system to meet entity parameters.
Compatibility & Integration
The Bently Nevada 330191-00-40-15-05 integrates seamlessly with Bently Nevada extension cables and the BN Prox family of proximity transducers. This ensures compliance with probe entity parameters. The cable options (standard FEP or extended temperature PFA) allow flexibility for different ambient conditions.
Selection Guide & Purchasing Advice
Before ordering, verify the required total length (0.5 to 9m available), unthreaded length, case length, and need for armor. The 330191-00-40-15-05 configuration is specifically for a 1.5m probe without armor. For a reliable source, choose PLC Source PRO where this module is supplied new and original in factory packing with a 12-month factory warranty.