Bently Nevada 330103-19-25-05-02-CN Proximity Transducer System

330103-19-25-05-02-CN: Stop the Clock on Downtime — Ship Today from Xiamen

Every hour a critical rotating machine sits idle costs real money — compressor trains, steam turbines, boiler feed pumps. When your Bently Nevada proximity transducer fails, the 3500 rack throws a Not OK and the whole unit trips. You don’t have time for a 6-week OEM lead time. The Bently Nevada 330103-19-25-05-02-CN is in stock at our Xiamen warehouse right now. Same-day dispatch on confirmed orders. DHL Express to your site in 2–5 business days, anywhere on the planet.

This is a 19 mm eddy-current probe assembly from the 3300 XL Proximity Transducer System — the industry benchmark for API 670-compliant machinery protection. The CN suffix designates the China/Asia-Pacific regional configuration: specific connector termination and documentation package aligned to regional procurement and customs requirements. Functionally identical to the standard 330103-19-25-05-02 in sensing performance. Drop it in, set your gap, verify your DC gap voltage, and get the machine back online.

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

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Common failure signatures that point to a dead 330103-19-25-05-02-CN:

• 3500 rack alarm: “Not OK” on the proximity channel — First rule out the Proximitor® sensor (330180 series) and the extension cable before condemning the probe. Swap the Proximitor® first; it fails more often than the probe itself.
• DC gap voltage out of range — Nominal is around -10 VDC at 1.0 mm gap. If you’re reading -24 VDC (rail voltage), the probe is open-circuit — cable break or probe coil failure. If you’re reading 0 VDC, check for a short in the extension cable or connector.
• Intermittent OK/Not OK cycling — Almost always a connector issue. Inspect the probe-to-extension cable junction and the extension-to-Proximitor® connector for corrosion, bent pins, or moisture ingress. Clean with contact cleaner and re-torque.
• High vibration amplitude with no process change — Check probe tip for physical damage or contamination. A cracked probe tip or metallic debris on the target face will corrupt the eddy-current field and produce false high readings.

Step-by-step replacement procedure:

1. Isolate and lock out the machinery protection system channel before disconnecting any wiring. Notify the control room — removing the probe will generate a Not OK condition.
2. Record the existing gap voltage before removal. This gives you a baseline for the new probe installation.
3. Remove the probe by loosening the lock nut. Note the thread engagement depth — the new probe must be installed to the same depth to maintain the calibrated gap.
4. Install the new 330103-19-25-05-02-CN. Thread in by hand until the probe tip is approximately 1.0 mm from the target surface. Use a non-ferrous feeler gauge if access allows.
5. Verify DC gap voltage with a calibrated multimeter at the Proximitor® output terminals. Target: -10.0 VDC ±0.5 VDC. Adjust probe depth in small increments (1/4 turn) until within spec, then lock the nut.
6. Confirm OK status on the 3500 rack display. Check both the OK relay and the vibration/position reading against known baseline values before returning the machine to service.
7. No firmware changes required — the 330103-19-25-05-02-CN is a passive probe assembly. All signal conditioning is handled by the Proximitor® sensor. No address switches, no DIP settings, no configuration upload needed.

Note on target material: The 3300 XL system is factory-calibrated against AISI 4140 steel. If your shaft material differs (e.g., 17-4 PH stainless, Inconel), apply the appropriate scale factor correction per Bently Nevada application note. Failure to account for target material will introduce a systematic measurement error that no amount of gap adjustment will fix.

Reliability in Harsh Conditions

The 3300 XL probe assembly is not a lab instrument — it lives inside bearing housings, turbine pedestals, and compressor casings where conditions are brutal. The 330103-19-25-05-02-CN is built to survive exactly that environment.

The probe body is machined from stainless steel with a hermetically sealed coil assembly. The 2-meter armored extension cable uses a stainless steel braid over a PTFE-insulated coaxial core — resistant to cutting oils, steam condensate, hydrogen sulfide atmospheres, and the mechanical abrasion that destroys standard instrumentation cable in months. The cable terminations are sealed against moisture ingress to IP67 equivalent.

Vibration endurance: the probe assembly is rated to withstand continuous vibration levels far exceeding the machinery it monitors. In practice, the probe outlasts the bearing it’s watching. The failure mode, when it does occur, is almost always the extension cable connector — not the probe coil itself.

Temperature: the probe tip is rated to +177°C continuous. For applications near steam turbine exhaust flanges or hot gas expanders, verify that the extension cable routing keeps the cable body below its rated temperature limit. Use ceramic-insulated standoffs if necessary to route the cable away from hot surfaces.

Chemical resistance: the PTFE cable jacket and stainless probe body handle the full range of refinery and petrochemical atmospheres — H₂S, ammonia, chlorinated solvents, and hydrocarbon condensates — without degradation. This is why the 3300 XL series dominates in upstream oil and gas applications where cheaper sensors fail within a single turnaround cycle.

Global Express Logistics

Our Xiamen warehouse operates on a same-day dispatch model for in-stock items. Here’s exactly how your order moves from our shelf to your site:

• Order confirmation by 14:00 CST → packed and handed to DHL/FedEx courier same evening.
• Export documentation prepared in parallel: commercial invoice, packing list, and CN22/CN23 customs declaration. HS code 9026.80 (instruments for measuring physical quantities) pre-filed to avoid customs clearance delays.
• DHL Express Worldwide: typical transit 2–3 business days to Southeast Asia, Middle East, and Europe. 3–5 business days to North America and South America.
• FedEx International Priority: available as an alternative for destinations where FedEx has stronger last-mile coverage (e.g., remote industrial sites in the Gulf region or Latin America).
• Tracking provided within 2 hours of dispatch. AWB number sent directly to your email and WhatsApp.
• Customs duties and import VAT: shipped DAP (Delivered At Place) as standard. DDP (Delivered Duty Paid) available on request for customers who require a single all-inclusive landed cost.
• Emergency freight: for genuine plant emergencies, we can arrange next-flight-out courier service from Xiamen Gaoqi International Airport. Contact us directly on WhatsApp for this option — response within 30 minutes during business hours.

Every shipment includes a printed certificate of conformance, packing list, and customs invoice. No surprises at the border, no delays at the freight desk.

Contact Information

📧 Email: [email protected]
💬 WhatsApp: +86 18359268345
🌐 Web: siemensplc.com
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