330191-00-16-15-CN | Bently Nevada 1.5m 8mm Proximity Probe

Product Overview: Bently Nevada 330191-00-16-15-CN

The 330191-00-16-15-CN is a 3300 XL 8 mm ETR proximity probe from Bently Nevada, designed for exact shaft displacement and vibration measurement in industrial machinery. As a maintenance engineer, you need sensors that deliver repeatable data under harsh conditions. This probe meets that demand with a 1.5-meter total length, a 3/8-24 UNF thread, and no armor, making it suitable for installations where a flexible, lightweight lead is preferred. The probe features a polyphenylene sulfide (PPS) tip and a stainless steel case, providing robust protection against physical abuse. Its patented TipLoc and CableLoc designs ensure a secure bond between tip, body, and cable, withstanding up to 330 N (75 lbf) of pull strength. The 330191-00-16-15-CN operates with -17.5 Vdc to -26 Vdc when installed with a nonincendive circuit per drawing 140979, drawing a maximum of 12 mA. For barrier installations, -23 Vdc to -26 Vdc is required. This engineering-grade precision ensures reliable performance in critical turbomachinery applications.

Key Specifications of the 330191-00-16-15-CN

• Input Voltage: -17.5 Vdc to -26 Vdc (nonincendive); -23 Vdc to -26 Vdc with barriers
• Output Resistance: 50 Ω
• Probe DC Resistance: 7.73 Ω ± 0.50 at 1.5 m
• Total Length: 1.5 meter (4.9 feet)
• Case Length: 1.6 inch
• Thread: 3/8-24 UNF, maximum engagement 0.563 inch
• Tip Material: Polyphenylene sulfide (PPS)
• Case Material: AISI 303 or 304 stainless steel
• Cable: 75 Ω triaxial, FEP insulated
• Connector: Gold-plated brass or beryllium copper
• Maximum Connector Torque: 0.565 N·m (5 in·lbf)
• Tensile Strength: 330 N (75 lbf) probe case to lead; 270 N (60 lbf) lead to extension cable
• Weight: 323 g/m (11.4 oz)

For specifications not listed, refer to the official Bently Nevada datasheet.

Installation and Maintenance for Reliability

Proper installation is critical for accurate measurements. Mount the probe using the 3/8-24 UNF thread, ensuring the unthreaded length is 0.0 inch as specified. Apply a maximum torque of 0.565 N·m (5 in·lbf) to the connector. The probe seals differential pressure with a Viton O-ring, but it is not pressure tested prior to shipment. For maintenance, inspect the probe periodically for physical damage, cable wear, and connector integrity. The PPS tip and stainless steel case resist harsh environments, but avoid excessive bending or pulling on the cable beyond rated tensile strength. The 330191-00-16-15-CN operates in ambient temperatures from -55°C to +232°C for EPL Ga/Gc T1, with other classifications available. Regular checks ensure long service life and reduce unplanned downtime.

Applications and Compatibility

The 330191-00-16-15-CN is ideal for monitoring shaft vibration, axial position, and radial displacement in steam turbines, compressors, and pumps. It integrates with Bently Nevada 3300 XL extension cables and proximitors. When used with nonincendive circuits, follow installation drawing 140979. For hazardous areas, barriers are required. This probe is compatible with standard 3300 XL systems, but always verify system compatibility. For integration into plant networks, consult Bently Nevada documentation.