Bently Nevada 330101-00-66-10-02-CN 3300 XL 8 mm Probe

Product Introduction

The Bently Nevada 330101-00-66-10-02-CN is a 3300 XL 8 mm proximity probe with 3/8-24 UNF thread, supplied without armor. The 3300 XL 8 mm platform reflects significant improvements over previous 3300 probe designs: a patented TipLoc molding method provides a more robust bond between the probe tip and the probe body, while the patented CableLoc design gives the probe cable a 330 N (75 lbf) pull strength for a more secure tip-to-cable attachment. The probe is manufactured in the U.S.A. and carries the CN agency approval option (country-specific approvals).

Technical Parameters

• Model: 330101-00-66-10-02-CN
• Product Type: 3300 XL 8 mm Probe, 3/8-24 UNF thread, without armor
• Unthreaded Length Option: 00 = 0.0 in
• Overall Case Length Option: 66 = 6.6 in
• Total Length Option: 10 = 1.0 metre (3.3 feet)
• Connector and Cable-Type Option: 02 = Miniature coaxial ClickLoc connector, standard cable
• Agency Approval Option: CN = Approvals country specific
• Nominal Probe dc Resistance (1.0 m): 7.59 ± 0.50 ohms, center conductor to outer conductor
• Extension Cable Capacitance: 69.9 pF/m (21.3 pF/ft) typical
• Field Wiring: 0.2 to 1.5 mm² (16 to 24 AWG); 3-conductor shielded triad cable recommended; maximum 305 metres (1,000 feet) between Proximitor and monitor
• Linear Range: 2 mm (80 mils), beginning at approximately 0.25 mm (10 mils) from target, from 0.25 to 2.3 mm (10 to 90 mils), approximately -1 to -17 Vdc
• Recommended Gap Setting (radial vibration): -9 Vdc, approximately 1.27 mm (50 mils)
• Incremental Scale Factor (5 or 1 m system): 7.87 V/mm (200 mV/mil) ±5% including interchangeability error, 0°C to +45°C
• Incremental Scale Factor (9 m system): 7.87 V/mm (200 mV/mil) ±6.5% including interchangeability error, 0°C to +45°C
• Deviation from Best Fit Straight Line (5 or 1 m system): less than ±0.025 mm (±1 mil)
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 303 or 304 stainless steel (SST)
• Weight: 323 g/m (11.4 oz)
• Operating and Storage Temperature (standard probe): -52°C to +177°C (-62°F to +350°F)

Parameter Analysis

The ordering string fully describes the probe hardware. The 00 unthreaded length option means the thread runs the full case length, the 66 option gives a 6.6 inch overall case length, and the 10 option provides 1.0 metre (3.3 feet) of total length. Option 02 specifies the miniature coaxial ClickLoc connector with standard cable, and the CN suffix indicates agency approvals matched to specific destination countries.

The 8 mm platform is Bently Nevada’s most robust proximity probe: the larger diameter allows thicker encapsulation of the probe coil in the molded PPS tip and a stronger case, which is why 8 mm probes are recommended wherever physical abuse is a concern. Electrical performance is specified for the complete system: the incremental scale factor holds 7.87 V/mm (200 mV/mil) within ±5% including interchangeability error on standard 5 or 1 metre systems (±6.5% on 9 metre and extended temperature range systems), and deviation from best fit straight line stays below ±0.025 mm (±1 mil) on 5 or 1 metre systems. The linear 2 mm (80 mils) range begins about 0.25 mm (10 mils) from the target, and the recommended static gap for radial vibration is -9 Vdc, approximately 1.27 mm (50 mils).

Application Scenarios

3300 XL 8 mm probes are the standard choice for radial and axial shaft vibration, position, and speed measurements on steam and gas turbines, compressors, pumps, motors, and fans. The 1.0 metre total length of this variant suits installations where the probe sits close to its extension cable junction. With the FluidLoc cable option available on the 3300 XL platform, machines prone to oil migration through the cable interior can order a cable that prevents oil and other liquids from leaking out of the machine.

Installation Guide

Thread the probe into its tapped hole using the 3/8-24 UNF thread and mate the miniature coaxial ClickLoc connector to a matching 3300 XL 8 mm extension cable. Set the initial gap to the recommended -9 Vdc (approximately 1.27 mm / 50 mils) for radial vibration, then confirm the gap voltage against your system documentation. Use 0.2 to 1.5 mm² (16 to 24 AWG) 3-conductor shielded triad field wiring between the Proximitor and the monitor, keeping that run within 305 metres (1,000 feet). Because probe, extension cable, and Proximitor performance is specified as a system, verify the full loop after any component replacement.

Compatibility

The 330101-00-66-10-02-CN belongs to the 3300 XL 8 mm proximity system (330101 probe family) and connects through the miniature coaxial ClickLoc interface to matching 3300 XL extension cables and Proximitors. Probes and cables of the same length and Proximitors of the same part number are interchangeable, so this probe can be stocked as a common spare across identical measurement loops. TenBN supplies the complete chain — probe, extension cable, Proximitor, and monitors.

Maintenance Advice

Inspect the PPS tip, 3/8-24 UNF threads, and cable at each outage for wear, scoring, or damaged armor-free jacket. Keep the probe within its -52°C to +177°C operating and storage range; sustained exposure below -34°C (-30°F) may cause premature failure of the Viton pressure seal. Humidity performance is well controlled — average scale factor changes less than 3% after up to 56 days in 93% humidity per IEC standard 68-2-3 — but connectors should still be kept dry and correctly seated.

Procurement Advice

Each option digit changes the mechanical fit of the probe, so always confirm the complete part number against your machine’s bill of materials before ordering. The 330101-00-66-10-02-CN offered here is a genuine Bently Nevada component, and the official service manual is available with the product. TenBN holds 3300 XL 8 mm probes and accessories in inventory for fast shipment; contact [email protected] for pricing and lead time.

Frequently Asked Questions

What does the CN suffix mean on this probe?

CN is the agency approval option indicating country-specific approvals for the destination market, rather than a specific approval included by default.

What is the linear range of this probe?

The linear range is 2 mm (80 mils), beginning approximately 0.25 mm (10 mils) from the target and extending to 2.3 mm (90 mils), approximately -1 to -17 Vdc.

What gap should be set for radial vibration?

The recommended gap setting for radial vibration is -9 Vdc, approximately 1.27 mm (50 mils).

How rugged is the 8 mm probe design?

The 8 mm diameter allows thicker encapsulation of the coil in the molded PPS tip and a stronger case; TipLoc molding bonds tip to body, and CableLoc design provides 330 N (75 lbf) cable pull strength.

What temperature range does the probe tolerate?

Standard probes operate and store from -52°C to +177°C (-62°F to +350°F); extended temperature range variants reach +218°C at the tip and +260°C for cable and connector.