Product Overview

The Bently Nevada 330104-12-20-10-02-00 3300 XL 8 mm Proximity Transducer delivers unmatched dynamic precision for machinery health deployment. This metric-threaded eddy current sensor continuously tracks vital indicators such as radial shaft vibration, axial position thrust, and structural eccentricity on heavy rotating infrastructure. It feeds highly accurate analog signals directly into Bently Nevada 3500 protection monitors and plant-wide Distributed Control Systems (DCS), driving automated Emergency Shutdown (ESD) control loops. By translating minute microvolt-level physical displacements into a highly linear voltage output scale factor, it enables instrumentation teams to capture rapid asset anomalies before catastrophic failures manifest. The advanced coil design guarantees excellent thermal performance, eliminating measurement drift within high-pressure gas compressors, steam turbine environments, and large utility pump casings.

Architectural Part Suffix Breakdown

330104: 3300 XL 8 mm Proximity Probe with Metric Thread

This primary model number designates the 8 mm tip diameter sensor body engineered with a standard M10 x 1 metric structural thread profile.

Unthreaded Length Designation: -12

This option defines a 120 mm unthreaded housing length, leaving a specific smooth section on the stainless steel sleeve for deep bracket immersion or clearance requirements.

Overall Case Length Designation: -20

This selection establishes a 200 mm overall case length, dictating the total physical reach of the transducer casing into the machinery bearing port housing.

Total Cable Length Parameter: -10

This suffix dictates a 1.0-meter (3.3 feet) integrated cable length, running seamlessly from the encapsulated sensor tip face to the terminal coaxial coupling interface.

Connector and Line Selection: -02

This setting confirms the inclusion of a standard miniature coaxial Click-Loc plug with low-loss premium coaxial cabling, maximizing signal propagation stability.

Global Certification Standing: -00

This final option indicates standard unapproved deployment without specific hazardous area or explosion-proof regional certification, ideal for safe general purpose zones.

Dimensional and Transducer Specifications

On-Site Alignment and Installation Mandates

DC Gap Voltage Optimization

Thread the M10 sensor body into the bearing mounting bracket while measuring the active DC voltage across the outputs of the matched 3300 XL Proximitor sensor. Manually advance or retract the probe body until your digital voltmeter displays exactly -10.0 VDC, confirming the target asset shaft sits directly at the geometric center of the sensor's linear range.

Structural Cable Protection Limits

Enforce a rigid minimum cable bend radius constraint of 25.4 mm (1.0 inch) along the entire route layout to avoid distorting the internal coaxial shielding matrix. Run the sensor leads inside independent, grounded metal conduit paths to completely isolate weak dynamic signals from electromagnetic fields generated by high-power supply networks.

Coaxial Coupling Environmental Sealing

Always place the miniature coaxial Click-Loc junction point between the integrated probe lead and the system extension line inside an isolated, weatherproof box. Utilize proper liquid-tight industrial cable glands to exclude moisture condensation or lubricating oil mist, preserving an infinite loop insulation resistance profile.

Asset Integration and Environmental Safeguards

Caustic Medium Endurance

The high-grade 303 stainless steel sleeve frame and vacuum-molded PPS tip face provide complete immunity against aggressive synthetic lubricants, hot steam, and moisture contamination. The internal wire windings resist degradation during rapid machine startup thermal cycles, ensuring dependable structural operation without signal spiking.

Machinery Management Software Integration

This proximity transducer generates the high-frequency analog data streams needed by modern Turbine Supervisory Instrumentation (TSI) suites. It outputs clean waveform data directly into enterprise diagnostic networks, integrating seamlessly with Honeywell Experion PKS architectures for real-time orbit logging, shaft centerline tracking, and oil film stability monitoring.

Package Inventory Details

The standard commercial product package contains the following distinct components:

(1) Bently Nevada 330104-12-20-10-02-00 8 mm metric proximity transducer with integrated 1.0-meter cable.

(2) Factory-terminated male miniature coaxial Click-Loc connector with a clear protective vinyl shipping cap.

(3) Complete kit of heavy-duty metric hex locking nuts for rigid positioning inside the machine casing thread.

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

Logistic Standards and Delivery Management

Express Site Dispatch

Global fulfillment hubs dispatch orders within 2-7 days when payment finish verification steps finalize. Shipments move exclusively through trusted express logistics networks including DHL, FedEx, and UPS to guarantee fast, tracked arrivals directly to refinery and industrial sites worldwide.

Specialized Kinetic Packaging

Logistics personnel enclose every transducer inside customized, multi-layer anti-static industrial packaging sleeves. This specialized electrostatic layout completely shields the delicate high-frequency sensor coils from physical mechanical impacts and static voltage arcs during global transit.

Field Maintenance FAQs

Q1: What is the mechanical difference between a 330104 metric probe and a standard 330101 probe?

A1: The main difference is the outer casing thread type. The 330101 probe utilizes English imperial threads (3/8-24 UNF), while this 330104 probe uses metric threads (M10 x 1). Always check the tapped profile of your machine's bearing housing port before installation to avoid serious cross-threading damage.

Q2: This part features a 120 mm unthreaded length. How does this affect my mounting installation?

A2: The -12 suffix means that 120 mm of the total 200 mm case length is a smooth, unthreaded stainless steel sleeve. This design is perfect for deep-port installations where you must pass the probe through a thick outer casing or guide bracket before the threads engage, allowing the tip to reach internal target areas safely.

Q3: Can I attach this 1.0-meter probe directly to an 8.5-meter Bently Nevada extension cable?

A3: No, you must verify the total loop length rating of your Proximitor sensor. Bently Nevada 3300 XL 8 mm proximity systems are calibrated for either 5.0-meter or 9.0-meter total electrical loops. Because this probe includes an integrated 1.0-meter cable, you must couple it with a 4.0-meter or 8.0-meter extension cable to maintain the correct electrical capacitance and 200 mV/mil scale factor.

Q4: What simple check confirms if the internal sensor coil has been physically or electrically damaged?

A4: Disconnect the probe line from the extension cable and connect a digital multimeter to measure resistance between the center conductor pin and the outer shield of the Click-Loc connector. A functional 3300 XL 8 mm probe must show a stable reading between 4.0 ohms and 8.0 ohms. An infinite open circuit or zero-ohm reading indicates internal damage, meaning you must replace the transducer.