Bently Nevada 330191-00-70-10-00 Industrial Automation Module

Product Overview

When probe failures cause costly downtime in rotating machinery, the Bently Nevada 330191-00-70-10-00 provides a reliable solution. This 3300 XL 8 mm ETR Proximity Probe is engineered to prevent common failure modes such as cable pullout, tip detachment, and fluid ingress. With patented TipLoc molding and CableLoc design, the 330191-00-70-10-00 delivers 330 N (75 lbf) pull strength at the probe case to probe lead connection, ensuring robust physical integrity even in harsh industrial environments. The probe features a 1.0 meter total cable length, a 7-inch overall case, and a 3/8-24 UNF thread with a minimum unthreaded length of 0.0 in. This model is part of Bently Nevada's trusted 3300 XL series, designed for eddy-current vibration monitoring in turbomachinery, compressors, and pumps.

Technical Specifications

Key parameters of the Bently Nevada 330191-00-70-10-00 are derived directly from the product data:

• Power Supply: Requires -17.5 Vdc to -26 Vdc (nonincendive circuit) at 12 mA maximum; operation below -23.5 Vdc for barriers
• Supply Sensitivity: Less than 2 mV change per volt change in input voltage
• Output Resistance: 50 Ω
• Nominal Probe DC Resistance: 7.59 ± 0.50 Ω at 1.0 m probe length
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 303 or 304 stainless steel
• Cable: 75Ω triaxial FEP insulated (standard) or PFA (extended temperature range)
• Tensile Strength: 330 N (75 lbf) probe case to probe lead; 270 N (60 lbf) at probe lead to extension cable connectors
• Connector Material: Gold-plated brass or gold-plated beryllium copper; maximum torque 0.565 N·m (5 in·lbf)
• Temperature Schedule: EPL Ga/Gc: T1 (-55°C to +232°C) through T5 (-55°C to +40°C); EPL Dc: T280°C @ Ta -55°C to +232°C, etc.
• Probe Weight: 323 g/m (11.4 oz)

These specifications ensure the 330191-00-70-10-00 operates reliably in extreme conditions, from -55°C to +232°C depending on temperature classification.

Industry Applications

The Bently Nevada 330191-00-70-10-00 is ideal for vibration monitoring in critical rotating machinery. Typical applications include:

• Turbomachinery: Steam turbines, gas turbines, and axial compressors where radial vibration and shaft position must be accurately measured.
• Centrifugal Compressors: High-speed rotating equipment that demands precise proximity measurement to prevent catastrophic failure.
• Pumps and Fans: Large pumps and induced-draft fans where bearing wear and misalignment can be detected early using the 330191-00-70-10-00.

Because the 330191-00-70-10-00 offers a thicker PPS encapsulation of the probe coil, it provides superior robustness against physical abuse compared to smaller diameter probes. The patented CableLoc design prevents cable failures that often lead to false shutdowns, making this model a cost-effective upgrade for older systems.

Installation and Setup Guidance

Proper installation of the Bently Nevada 330191-00-70-10-00 enhances measurement accuracy and sensor life. Follow these guidelines:

• Mounting: Use a threaded mount with 3/8-24 UNF thread. Ensure maximum thread engagement of 0.563 in. The probe has a minimum unthreaded length of 0.0 in, so it must be fully seated.
• Cable Routing: Secure the 1.0 m cable away from sharp edges and moving parts. The triaxial cable (75Ω) should not be kinked or twisted; avoid tensile stress beyond the rated 330 N (75 lbf) at the probe case.
• Gap Setting: For optimal linear range, set the probe-to-target gap per the Bently Nevada installation drawing 140979. Operation at voltages more positive than -23.5 Vdc may reduce linear range.
• Environmental Protection: The probe uses a Viton® O-ring to seal differential pressure between tip and case. Do not pressure test prior to shipment; the seal is designed for normal operating conditions.

Maintenance and Reliability

To maximize the service life of the 330191-00-70-10-00, implement the following practices:

• Regular Inspection: Visually check the probe tip and cable for signs of wear, abrasion, or chemical attack. The PPS tip and stainless steel case resist most industrial environments.
• Connector Care: Gold-plated connectors should be cleaned with isopropyl alcohol if contamination is visible. Torque connectors to 0.565 N·m (5 in·lbf) to avoid damage.
• Temperature Compliance: Ensure the ambient temperature at the probe tip falls within the selected temperature classification (e.g., T3: -55°C to +120°C for standard applications).
• Periodic Testing: Measure probe DC resistance (RPROBE) between center and outer conductors. For a 1.0 m probe, the value should be 7.59 ± 0.50 Ω. Drift indicates cable degradation.

By choosing the Bently Nevada 330191-00-70-10-00, you reduce unplanned downtime through its robust mechanical design and proven reliability in severe service.

Selection Guide and Purchasing Advice

When selecting the 330191-00-70-10-00, verify these parameters against your application:

• Thread and Mounting: Confirm the 3/8-24 UNF thread matches your mounting hole. The 7-inch overall case length (option 70) and 1.0 meter total length (option 10) are fixed on this model.
• Temperature Requirements: Choose the appropriate agency approval option; here it is 00 (not required), but if hazardous area certification is needed, order a different suffix.
• Cable Options: Standard FEP cable is suitable for most applications; extended temperature range PFA cable is available for high-heat areas.
• Compatibility: This probe is intended for use with Bently Nevada extension cables and Prox systems to meet entity parameters.

For new installations or upgrades, trust PLC Source PRO as a reliable supplier of genuine Bently Nevada products. We ensure factory-new condition with 12-month warranty.