Product Overview

The Bently Nevada 330709-000-030-10-02-00 3300 XL 11mm Proximity Probe provides an extended linear measurement range for demanding machinery condition monitoring applications. Mechanical and instrumentation engineers deploy this rugged eddy current sensor to monitor long-stroke axial thrust displacement and high-amplitude radial vibration on large-scale rotating assets. It serves as an essential data source for massive steam turbines, heavy-duty gas compressors, and industrial hydro-generators. By delivering an expanded linear range compared to standard 8mm probes, this 11mm variant eliminates the risk of sensor saturation during significant shaft shifts or high-vibration transients. The high-performance probe construction guarantees continuous, precise gap metrics under volatile thermal conditions, transferring noise-free telemetry directly to central Bently Nevada 3500 monitoring racks and emergency shutdown systems to mitigate catastrophic machinery breakdowns.

Part Number Suffix Logic Breakdown

This definitive 3300 XL 11mm proximity probe model number contains specific engineering configurations defined by its alphanumeric ordering options.

000 — Unthreaded Length Option

The 000 suffix specifies a fully threaded probe body configuration with zero unthreaded length, allowing maximum adjustment flexibility within standard mechanical bracket or housing arrangements.

030 — Overall Case Length Option

This numerical suffix sets the total length of the primary stainless steel case at 3.0 inches, defining the physical depth the sensor housing can project through machine covers or bearing casings.

10 — Total Length Option

The 10 code dictates a 1.0-meter total integrated cable length, matching the primary electrical inductance and capacitance parameters required for native system balancing.

02 — Connector Option

The 02 selection equips the integrated coaxial extension lead with a miniature male ClickLoc connector, which provides a robust, vibration-resistant connection while enabling rapid tool-free field mating.

00 — Agency Approval Option

This suffix signifies standard global approvals, certifying the probe assembly meets baseline industrial standards and intrinsic safety parameters for typical factory and manufacturing installations.

Physical and Transducer Measurement Matrix

Field Commissioning and Gap Adjustments

Mount the threaded probe body into the bearing casing or specialized probe housing assembly using calibrated thin profile locknuts. Connect a standard 3300 XL 11mm Proximitor Sensor and a high-accuracy digital multimeter to monitor the live gap voltage output during insertion.

Thread the probe downward toward the target shaft surface until the multimeter indicates a steady bias voltage of -10.0V DC, which identifies the absolute midpoint of the 11mm sensor's extended linear range. Maintain a strict minimum dynamic cable bend radius of 30mm for the coaxial line to avoid crushing the internal fluoropolymer dielectric layer. Torque the main mounting locknuts to 11.2 Nm to secure the probe housing firmly against high-frequency structural frequencies.

Transducer Hardening and Integration Architecture

The 330709-000-030-10-02-00 probe displays exceptional physical survivability, running continuously inside oil-saturated environments exposed to intense mechanical shock waves and extreme ambient thermal fluctuations. The high-performance polyphenylene sulfide (PPS) tip material resists chemical breakdown from synthetic lubricants, ammonia, and high-pressure steam flushes.

This extended-range sensor integrates seamlessly into mainstream Turbine Supervisory Instrumentation (TSI) setups, matching perfectly with Bently Nevada 3500/42M Proximitor modules. The double-shielded coaxial lead wires isolate the ultra-low voltage eddy current signals from strong electromagnetic field noise generated by surrounding high-voltage generators or motor switchgear, preserving clear diagnostic signal integrity.

Hardware Manifest and Procurement Data

Your specialized machinery protection component arrives individually serialized, continuity verified, and fully prepared for critical loop calibration. Your package contains:

(1) New Bently Nevada 330709 11mm Proximity Probe Main Assembly

(2) Set of Pre-installed Brass Adjustment and Locking Washers

(3) Factory Acceptance Test Data Sheet and Calibration Curve Certificate

(4) Removable ClickLoc Connector Protective Dust Cover Cap

Express Freight and Packaging Integrity

Our shipping department processes international dispatches within 2-7 days when payment finish, utilizing premier express air couriers including DHL, FEDEX, and UPS to prevent maintenance delays. Technicians pack each 11mm probe inside specialized anti-static industrial packaging and coil it gently within tailored shock-absorbent foam enclosures. This specialized fulfillment standard eliminates structural crushing risks, shields the internal magnetic elements from stray static charges during air transit, and ensures the sensor tip reaches your site undamaged and ready to install.

Transducer System Maintenance FAQs

Q1: Why is an 11mm proximity probe selected over a standard 3300 XL 8mm probe assembly?

A1: Large machinery thrust bearings frequently experience greater axial travel than a standard 8mm probe can measure without going non-linear. The 11mm probe variant expands the total linear sensing envelope to 4.0 mm, providing sufficient clearance and tracking range for large turbines during thermal startup expansion cycles.

Q2: Does the ClickLoc connector require specialized crimping tools or gold soldering during field connection?

A2: No. The ClickLoc connector system uses a precision-machined, push-to-lock interface that connects directly to the matching female connector of a 3300 XL extension cable without tools. Hand-tighten the coupling to lock it securely against heavy industrial vibrations.

Q3: Can this probe connect directly to an 8mm Proximitor sensor if the wiring distances are identical?

A3: No. The internal electrical properties and tip capacitance of the 11mm probe differ significantly from 8mm sensors. Operating this probe requires a dedicated 3300 XL 11mm Proximitor Sensor to avoid severe calibration tracking errors and distorted scale factors