Product Overview

The Bently Nevada 330103-00-17-10-02-CN 3300 XL 8 mm Reverse Mount Proximity Probe ensures continuous asset protection and maximum mechanical visibility for critical high-speed rotating equipment. This specialized eddy current hardware monitors shaft displacement, oil film thickness, radial vibration, and thrust position in confined configurations where standard forward installation proves impossible. It interfaces flawlessly with Bently Nevada 3500 rack monitors and Distributed Control Systems (DCS), executing the primary input acquisition for plant-wide Emergency Shutdown (ESD) control. By translating physical micro-movements into clean, linear voltage signals, it provides instrumentation specialists with exact data profiles to arrest failures before they develop. The robust internal circuitry maintains absolute measurement accuracy under intense thermal stress, ensuring steady operations inside heavy-duty turbine packages, large centrifugal fans, and high-pressure process pumps.

Suffix Configuration Matrix

330103: 3300 XL 8 mm Reverse Mount Probe Base

This part code specifies the 8 mm tip diameter reverse mount housing design, utilizing standard 3/8-24 UNF threads and optimized for rear-installation brackets or housings.

Unthreaded Length Designation: -00

This selection indicates a 0.0-inch unthreaded case configuration. The stainless steel shell carries complete structural threads along its length, giving engineers complete mechanical versatility within the bracket setup.

Overall Case Length Designation: -17

This option establishes a 1.7-inch overall case length, defining the physical dimensions and structural projection of the sensor shell inside the designated port hole.

Cable Length Parameter: -10

This suffix dictates a 1.0-meter (3.3 feet) total integrated cable line length, measured precisely from the encapsulated probe tip face to the end of the coaxial coupling.

Connector Option Type: -02

This code confirms the attachment of a miniature coaxial Click-Loc plug paired with standard coaxial line insulation, ensuring negligible signal attenuation across the measurement loop.

Regional Compliance Approval: -CN

This specialized suffix applies China Ex certifications, legally validating the intrinsic safety and explosion-proof parameters of the sensor hardware for industrial deployment within Chinese regulated zones.

Dimensional and Dynamic Parameters

Machinery Bench Calibration Requirements

DC Gap Voltage Tuning

Set the reverse mount probe body into the rear assembly bracket while checking the active DC voltage across the matched Proximitor sensor output terminals. Manually shift the clearance until your voltmeter displays exactly -10.0 VDC, verifying that the target shaft rests precisely at the midpoint of the sensor's linear operating zone.

Coaxial Layout Parameters

Enforce a minimum cable bend radius limitation of 25.4 mm (1.0 inch) during line installation to prevent core kinking. Run all transducer lines through isolated, grounded metal conduits to block stray electromagnetic fields emitted by high-voltage generator leads or heavy switching gear.

Terminal Environmental Seals

Protect the delicate intermediate Click-Loc connector joint from moisture and grease accumulation by housing it within an isolated terminal junction box. Apply proper industrial cable glands to eliminate oil ingress, ensuring loop insulation resistance does not drop.

Asset Environment Resilience

Severe Chemistry Durability

The robust 303 stainless steel frame and vacuum-molded PPS tip face withstand high exposure to aggressive synthetic lubricants, process steam, and ambient moisture. The interior sensor coils resist degradation during rapid machine startup temperature spikes, suppressing signal distortion.

Turbine Supervisory Instrumentation Synergy

This proximity transducer generates the high-fidelity analog waves required by advanced Turbine Supervisory Instrumentation (TSI) applications. It transmits clean data streams into local processing monitors, integrating with Honeywell Experion PKS platforms to achieve real-time shaft centerline tracking, speed logging, and orbit plot diagnostics.

Package Kit Contents

The complete commercial product shipping box contains the following individual items:

(1) Bently Nevada 330103-00-17-10-02-CN 8 mm reverse mount proximity probe with an attached 1.0-meter cable.

(2) Pre-terminated male miniature coaxial Click-Loc terminal joint with a protective vinyl shipping cap.

(3) Complete kit of industrial locking nuts and washers configured for rear-mounting mechanical fixation.

(4) Material compliance log sheets and original factory calibration tracing sheets.

Logistics Standards and Transit Protocols

Priority Global Transit

Warehouses dispatch orders within 3-5 days when payment finish verification steps complete. Freight runs through premium international express couriers including DHL, FedEx, and UPS to guarantee fast, tracked arrivals directly to refinery and power plant sites.

Heavy-Duty Electrostatic Shielding

Logistics operators pack every transducer inside specialized, multi-layer anti-static industrial packaging sleeves. This protective electrostatic layout isolates the internal wire matrix from environmental kinetic impacts and sudden voltage arcs during long-distance global transport.

Transducer Maintenance FAQs

Q1: What separates the mechanical usage of this 330103 reverse mount probe from a standard 330101 probe?

A1: The primary difference centers on the physical installation path. A standard 330101 probe threads directly from the outside of the machine casing toward the target. This 330103 reverse mount probe inserts into a separate housing sleeve or internal bracket from the back, making it ideal for sleek machinery configurations or internal bearing locations where external clearance is limited.

Q2: Can I combine this 1.0-meter probe line with a standard 9.0-meter extension cable?

A2: No, doing so will throw off the total electrical balancing of the circuit. Bently Nevada 3300 XL 8 mm proximity systems operate on strict total loop lengths of either 5.0 meters or 9.0 meters. Since this probe has an integrated 1.0-meter cable, you must use a 4.0-meter or 8.0-meter extension cable to complete the calibrated circuit correctly.

Q3: What does the -CN suffix mean for my installation team in international locations?

A3: The -CN suffix indicates that this probe carries official explosion-proof certifications certified specifically for the Chinese domestic industrial market (NEPSI/CCC-Ex). For global operators, it confirms the sensor meets high hazardous area safety standards. However, if your local plant relies purely on ATEX or CSA frameworks, check local regulations to ensure reciprocal standard acceptance before field sign-off.

Q4: How can I tell if an unexpected shift in my vibration readings stems from a damaged probe or shaft issues?

A4: Disconnect the probe from the extension cable and measure the internal resistance across the center pin and the outer casing of the Click-Loc connector. A healthy 3300 XL 8 mm probe must show a stable reading between 4.0 ohms and 8.0 ohms. If the resistance matches this range but your DC gap voltage fluctuates wildly during machinery downtime, inspect the shaft target area for physical surface scratches or material runout.