Bently Nevada 330103-03-10-10-11-00 Proximity Probe

330103-03-10-10-11-00 In Stock — Every Hour of Downtime Costs You More Than This Part

Your gas turbine tripped at 02:40. The DCS alarm log shows 1X vibration spike on DE bearing, channel A open. Maintenance pulls the probe — tip is shorted, cable armor cracked from thermal cycling. The 3300 XL Proximitor is reading –24 VDC flat. You already know what failed. What you need right now is a verified replacement on a plane tonight, not a three-week lead time from the OEM distributor.

The Bently Nevada 330103-03-10-10-11-00 is an 8mm eddy current proximity probe from the 3300 XL Series — the global standard for non-contacting shaft displacement measurement in API 670 machinery protection systems. This exact part number specifies: 8mm tip diameter, 1.0m integral cable, standard armor jacket, reverse-mount thread configuration. It is factory-calibrated as a matched probe/driver pair for 7.87 V/mm (200 mV/mil) output sensitivity across the full 0.25–2.25mm linear range. No field calibration required when paired with the correct 3300 XL Proximitor.

We stock this part in Xiamen. It ships today.

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

Quick Technical Datasheet

Troubleshooting and Replacement Tips

Most common failure modes for the 330103-03-10-10-11-00:

1. Shorted probe tip (impact or contamination). Symptom: Proximitor output locks at –2 VDC or below, monitor flags Not OK. Pull the probe, measure DC resistance tip-to-case — anything under 100 kΩ is a dead probe. Do not attempt to clean and reinstall; eddy current probes are not field-repairable.

2. Cracked integral cable at the probe body exit. This is the highest-stress point on any proximity probe installation. Thermal cycling and vibration fatigue the cable jacket at the strain relief. Symptom: intermittent Not OK alarms that clear when the machine cools down. Flex the cable near the probe body while watching the Proximitor output — if the signal drops, the cable is the culprit.

3. Proximitor output stuck at –24 VDC (open circuit). Before condemning the probe, check the extension cable connector seating and the BNC termination at the Proximitor. A loose connector reads identically to a broken probe. Swap the extension cable first — it is faster and cheaper.

Replacement procedure (field-verified): De-energize the Proximitor supply rail — do not hot-swap. Record the existing gap voltage before removal (target: –10.0 to –11.0 VDC for a nominal 1.0mm gap on 4140 steel). Remove the probe using the correct spanner — never grip the cable. Install the new 330103-03-10-10-11-00 and hand-tighten plus 1/4 turn. Reconnect the extension cable and Proximitor. Power up and verify gap voltage matches the pre-removal reading ±0.5 VDC. Check the monitor channel for OK status before returning the machine to service. No firmware update or address configuration is required — this probe is passive; all signal conditioning is in the Proximitor.

Gap setting note: The 3300 XL 8mm system is calibrated for AISI 4140 steel targets. If your shaft material differs (e.g., 17-4 PH stainless, Inconel), the sensitivity will shift. Verify with a calibrated gap tool or request a material-specific calibration curve from Bently Nevada before commissioning.

Reliability in Harsh Conditions

The 3300 XL probe body is constructed from 316 stainless steel with a PEEK tip housing — chemically resistant to lube oil, seal gas condensate, and most process fluids encountered in turbomachinery bearing housings. The integral cable uses a fluoropolymer jacket rated to +200°C continuous, with stainless armor providing mechanical protection against abrasion and rodent damage in outdoor installations.

Vibration immunity is not a marketing claim here — the probe has no moving parts. The eddy current coil is epoxy-potted inside the tip housing, eliminating any resonance or fatigue failure mode within the probe body itself. The weak point is always the cable, which is why the reverse-mount configuration (cable exits away from the bearing housing heat source) extends service life significantly compared to standard-mount installations in high-temperature applications.

In offshore and coastal installations where salt fog and humidity are constant concerns, the stainless probe body and fluoropolymer cable jacket provide adequate corrosion resistance for the probe itself. The Proximitor enclosure is the more vulnerable component in those environments — ensure it is rated IP65 or better and that cable entry glands are properly sealed. Shock and seismic loading: the 3300 XL probe is qualified to IEC 60068-2-27 shock and IEC 60068-2-6 vibration test standards. In practice, the probe survives machinery trips and emergency shutdowns without damage — the failure mode during a hard trip is almost always the shaft contacting the probe tip, not the probe failing from the vibration event itself. Maintain adequate clearance between the probe tip and the shaft at maximum vibration amplitude.

Global Express Logistics

Our Xiamen warehouse operates on a same-day dispatch model for in-stock parts. Orders confirmed before 15:00 CST ship the same business day.

Step 1 — Inquiry confirmation: Send your PO or RFQ to [email protected] or WhatsApp +86 18359268345. We confirm stock and issue a proforma invoice within 2 hours during business hours.

Step 2 — Export documentation: We prepare the commercial invoice, packing list, and HS code declaration (HS 9031.80 for proximity measurement instruments). For customers in the EU, Middle East, or Southeast Asia, we include the certificate of origin on request. Dangerous goods classification does not apply to this part.

Step 3 — Carrier selection: DHL Express is the default carrier for most destinations — typical transit times are 2–3 business days to Europe, 1–2 days to Southeast Asia, 3–5 days to the Americas. FedEx International Priority is available as an alternative. For extremely urgent requirements, we can arrange same-day courier handoff to Xiamen Gaoqi International Airport for the earliest available flight.

Step 4 — Tracking and handover: Tracking number is sent within 1 hour of dispatch. We monitor the shipment and proactively notify you of any customs holds or delays. For first-time customers, we provide a photo record of the part and packaging before sealing the box. We have shipped to refineries in Saudi Arabia, power plants in Vietnam, compressor stations in Kazakhstan, and offshore platforms in the North Sea. Export compliance is handled in-house — no third-party freight forwarder delays.

Contact Information

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