Bently Nevada 330903-00-17-10-02-05/CN Proximity Probe

330903-00-17-10-02-05/CN: Stop the Clock on Your Downtime — Ship Today from Xiamen

Your turbine is offline. The DCS is throwing Alert 1 on the radial vibration channel. The proximitor is reading –24 V DC flat — no gap signal, no AC component. You’ve already swapped the extension cable and the monitor card checks out. The probe is dead. You need a Bently Nevada 330903-00-17-10-02-05/CN — the exact OEM part, not a substitute — and you need it before the next shift handover.

We stock this probe in Xiamen. DHL Express to Rotterdam, Houston, or Singapore is 48–72 hours door-to-door. Every hour your critical rotating machine sits idle costs your facility real money. We’ve done this before — for refineries in the Middle East, power plants in Southeast Asia, and compressor stations across Europe. The process is fast: confirm availability, issue proforma, ship same day or next morning. That’s it.

The 330903-00-17-10-02-05/CN is a factory-configured eddy-current proximity probe within Bently Nevada’s 3300 NSv (Non-Standard Voltage) Series machinery protection platform. Every digit in the part number is load-bearing: cable length, tip diameter, temperature class, connector suffix — all factory-matched to the 3300 NSv proximitor. Substituting a different suffix or series will detune the scale factor and invalidate your API 670 calibration. Don’t improvise on a critical machine. Order the exact part.

URGENT REQUIREMENT? Contact: [email protected] | WhatsApp: +86 18359268345

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Fault Scenario 1 — Flat DC output, no AC ripple (–24 V DC constant): This is the classic dead-probe signature on a 3300 NSv channel. Before condemning the probe, verify the extension cable continuity with a DMM — open circuit on the center conductor or shield will produce the same symptom. If the cable checks out, measure the proximitor supply voltage at the monitor terminal: should be –24 VDC ±10%. If supply is good and cable is intact, the probe coil is open. Replace the 330903-00-17-10-02-05/CN.

Fault Scenario 2 — Erratic vibration reading, intermittent OK/Alert cycling: Nine times out of ten this is a cracked probe tip or a compromised cable jacket at the probe-to-extension cable junction. Flex the cable near the connector while watching the raw gap voltage on the monitor’s front-panel meter. If the reading jumps, the fault is mechanical — replace the probe assembly. Do not attempt to re-terminate the cable in the field; the NSv calibration is tied to the factory-assembled cable length.

Replacement Procedure — Key Steps:

1. De-energize and lock out the 3300 NSv monitor channel before disconnecting the probe. Floating inputs on live NSv monitors can trigger false trips on adjacent channels through common-mode coupling.
2. Record the existing gap voltage before removal (typically –10 to –11 VDC for a 1.0 mm nominal gap on AISI 4140 target). This is your baseline for post-installation verification.
3. Thread the new 330903-00-17-10-02-05/CN into the probe mount. Torque to the OEM specification — typically 2.8 N·m for the 3/8-24 UNF thread. Over-torquing cracks the probe tip housing; under-torquing allows vibration-induced loosening.
4. Set the air gap to the nominal value specified in your machinery protection setpoint documentation. Use a non-ferromagnetic feeler gauge. Re-energize the channel and confirm the gap voltage matches your pre-removal baseline within ±0.5 VDC.
5. Verify scale factor: the 3300 NSv system is factory-calibrated at 7.87 V/mm (200 mV/mil). If your monitor’s scale factor display deviates by more than 2%, the replacement probe may be from a different calibration batch — contact us for a matched unit.
6. Run a channel check: manually deflect the probe tip with a non-conductive tool and confirm the monitor responds correctly before returning the machine to service.

Configuration Note — No DIP switches on this probe. Unlike some PLC I/O modules, the 330903 series has no field-configurable addressing or jumper settings. The probe is passive; all signal conditioning and setpoint configuration resides in the 3300 NSv proximitor/monitor. If you are replacing a monitor card simultaneously, re-enter all setpoints from your as-found documentation before energizing.

Reliability in Harsh Conditions

The 330903-00-17-10-02-05/CN is built for environments that destroy lesser sensors. The 316 stainless steel housing resists H₂S-laden atmospheres in sour gas service and chloride-rich coastal environments. The probe tip is encapsulated in a chemically inert polymer that maintains dimensional stability from cryogenic LNG service up to the rated +177 °C — covering the full range of bearing housing temperatures on gas turbines and steam turbines in combined-cycle power plants.

Vibration immunity is not an afterthought. The probe body is designed to withstand the broadband vibration spectrum of the very machines it monitors — including the high-frequency structural resonances that occur during startup and coast-down. The integrated cable assembly eliminates the field-terminated junction that is the single most common failure point on competitive probe systems. There is no solder joint, no crimp, no field connector between the probe coil and the extension cable interface — just a continuous, factory-sealed assembly.

In offshore and marine applications where salt spray and condensation are constant, the stainless housing and sealed cable entry prevent ingress that would otherwise cause galvanic corrosion at the coil terminations. Units destined for tropical or high-humidity environments are packaged with desiccant and moisture-barrier film to maintain probe integrity through extended transit and storage periods.

Global Express Logistics

Our warehouse is located in Xiamen, Fujian Province — one of China’s primary export hubs with direct access to international freight lanes via Xiamen Gaoqi International Airport and Xiamen Port. This geography is deliberate: it gives us the fastest possible connection to DHL Express and FedEx International Priority networks for shipments to Europe, the Middle East, Southeast Asia, and the Americas.

Typical transit times from Xiamen:

• Europe (Rotterdam, Frankfurt, London): 48–72 hours via DHL Express
• Middle East (Dubai, Dammam, Doha): 48–60 hours via FedEx International Priority
• Southeast Asia (Singapore, Jakarta, Bangkok): 24–48 hours via DHL Express
• North America (Houston, Los Angeles, Toronto): 72–96 hours via FedEx International Priority
• Australia / New Zealand: 72–96 hours via DHL Express

Every shipment includes a commercial invoice, packing list, and certificate of conformance. For customers in countries requiring import permits or SONCAP/PVOC certification, we coordinate documentation in advance to prevent customs delays. We have handled emergency shipments to active offshore platforms, operating refineries, and power plants under forced outage — we understand that paperwork delays cost as much as logistics delays, and we treat both with equal urgency.

Payment terms for urgent orders: T/T bank transfer (same-day processing for transfers received before 14:00 CST), PayPal for smaller quantities, and L/C for large-volume procurement contracts. We issue a proforma invoice within 2 hours of order confirmation.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
© 2026 siemensplc.com. All rights reserved.