Product Introduction
When machinery reliability is critical, the Bently Nevada 330191-00-70-50-00 delivers precision vibration monitoring. Part of the 3300 XL series, this 8 mm ETR proximity probe features a 3/8-24 UNF thread, 5.0-meter total length, and patented TipLoc and CableLoc designs for unmatched durability. Designed for use with 5-meter Proximitor sensors, it ensures accurate shaft displacement measurements in harsh industrial environments.
Technical Specifications Breakdown
Key performance parameters of the 330191-00-70-50-00 include:
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Power Requirement: -17.5 Vdc to -26 Vdc at 12 mA max (less than -23.5 Vdc with barriers to avoid reduced linear range).
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Sensitivity: Less than 2 mV change in output voltage per volt change in input voltage.
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Output Resistance: 50 Ω.
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Probe DC Resistance (5.0 m length): 8.73 ± 0.50 Ω.
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Probe Tip Material: Polyphenylene sulfide (PPS).
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Probe Case Material: AISI 303 or 304 stainless steel.
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Cable Options: Standard 75Ω triaxial FEP insulated; extended temperature range PFA insulated; optional flexible SST armor.
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Temperature Schedule: Class T1 to T5 for EPL Ga/Gc (-55°C to +232°C max) and T90°C to T280°C for EPL Dc.
These specs ensure the probe maintains linearity and withstands extreme conditions.
Industry Applications
In turbine, compressor, and pump monitoring, the Bently Nevada 330191-00-70-50-00 provides reliable shaft proximity detection. The 8 mm probe’s thicker PPS encapsulation resists physical abuse, while the optional FluidLoc cable prevents oil leaks in gearboxes. Its extended temperature range (up to +232°C) suits high-heat areas like steam turbines.
Maintenance & Reliability
Routine inspection of the Viton® O-ring seal and connector torque (max 0.565 N·m) preserves differential pressure integrity. The stainless steel case and gold-plated connectors resist corrosion. With a tensile strength of 330 N at the probe case and 270 N at the lead extension, the cable withstands pulling forces, reducing downtime from breakage.
Compatibility & Integration
The 330191-00-70-50-00 must be paired with the 5-meter Proximitor sensor only (one-meter systems do not use extension cables). It meets entity parameters when used with Bently Nevada extension cables and connected to a BN Proximitor. The 75Ω triaxial cable ensures signal integrity over distances up to 9 meters.
Selection Guide & Purchasing Advice
Before ordering, confirm your system requires a 5 meter total length probe with 7 inch overall case and zero unthreaded length. For applications needing fluid sealing, specify the FluidLoc cable option. PLC Source PRO stocks genuine Bently Nevada 330191-00-70-50-00 modules with factory warranty – verify part number compatibility with your existing Proximitor.