Bently Nevada 330104-05-11-90-11-00 Proximity Probe

330104-05-11-90-11-00 — Stop the Clock on Your Downtime. Ship Today.

Every hour a turbine or compressor sits idle costs real money — production losses, penalty clauses, emergency labor. The Bently Nevada 330104-05-11-90-11-00 is an 8mm eddy current proximity probe from the 3300 XL Series, and we stock it in Xiamen ready to move. No lead-time negotiation. No factory back-order wait. You confirm the order before cutoff, it leaves the same day via DHL or FedEx Express.

This probe is the primary sensing element in your 3300 XL transducer chain. When it fails — or when your machinery protection system throws a “probe fault” or “gap voltage out of range” alarm — the entire vibration monitoring loop goes blind. You cannot run the machine safely without a verified replacement in place. That is the situation this listing exists to solve.

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

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Field experience with the 3300 XL system surfaces the same failure patterns repeatedly. Here is what to check before and during replacement:

Common fault indicators that point to a failed 330104-05-11-90-11-00:

• Gap voltage out of range — The proximitor output sits outside the –2 to –18 VDC window. If you have already verified the proximitor and extension cable are good, the probe itself is the culprit. Measure DC gap voltage at the proximitor OK terminal: nominal gap at 1.0 mm should read approximately –7.87 VDC.
• Probe OK relay de-energized with no shaft movement — Indicates the probe is not generating a valid eddy current field. Check for physical damage to the probe tip or armored cable first. A cracked tip or kinked cable near the connector will kill the signal.
• Erratic vibration readings / noise floor elevated — Often caused by a partially failed probe with intermittent internal coil continuity. Swap the probe and compare raw gap voltage stability on a scope or the 3500 rack display.
• System cable length mismatch — The 330104-05-11-90-11-00 has a 5 m integral cable. Total system length (probe cable + extension cable) must match the proximitor calibration. A 330180-91-00 proximitor is calibrated for a 5 m + 5 m = 10 m total system. Verify before ordering extension cables.

Step-by-step replacement procedure:

1. De-energize the proximitor supply (–24 VDC) at the rack terminal before disconnecting the probe. Do not hot-swap — transient voltages can damage the monitor card input.
2. Unscrew the probe from the bracket using the correct spanner on the M10 × 1.0 thread. Note the gap setting (typically 1.0 mm ± 0.1 mm for standard installations) — measure with a feeler gauge before removal.
3. Inspect the probe mounting hole for thread damage or contamination. Clean with a lint-free cloth and verify the bracket is not cracked.
4. Install the new 330104-05-11-90-11-00. Set gap to the recorded value. Torque to manufacturer specification — do not over-torque the metric thread.
5. Reconnect the extension cable. Re-energize the proximitor and verify gap voltage at the OK terminal. Confirm the 3500 rack shows a valid channel status before returning the machine to service.
6. No firmware update or address configuration is required for this probe — it is a passive sensing element. All calibration is handled at the proximitor level.

Target material note: If your shaft material is not AISI 4140 steel, sensitivity will deviate from the 7.87 V/mm nominal. Consult Bently Nevada document 141078-01 for alloy correction factors before setting alarm setpoints.

Reliability in Harsh Conditions

The 330104-05-11-90-11-00 is not a general-purpose sensor. It is built for the inside of turbine enclosures — environments that would destroy standard instrumentation within weeks. The probe body is constructed from 316 stainless steel with a PEEK-encapsulated coil assembly, resistant to the oil mist, steam condensate, and process gas atmospheres common in turbomachinery enclosures.

The integral armored cable uses a stainless steel braid over a fluoropolymer-insulated conductor, rated to withstand continuous flexing, vibration-induced fatigue, and chemical exposure from lubricating oils and cleaning solvents. Operating temperature ceiling of +177°C covers the majority of steam turbine bearing housing environments without derating.

ATEX and IECEx certifications allow deployment in Zone 1 and Zone 2 hazardous areas — relevant for gas compressor trains and offshore installations where ignition risk must be controlled. The probe generates no spark risk under normal or fault conditions.

Vibration immunity is inherent in the non-contact measurement principle: there are no moving parts, no wear surfaces, and no mechanical coupling to the shaft. The probe continues measuring accurately through the same vibration events it is designed to detect. Mean time between failure for 3300 XL probes in clean installations is measured in decades, not years — when a probe does fail, it is almost always due to physical damage or installation error, not component fatigue.

Global Express Logistics

Our warehouse is located in Xiamen, Fujian Province — one of China’s primary export hubs with direct access to DHL, FedEx, and UPS international express networks. For urgent industrial replacement orders, we operate on the following dispatch schedule:

• Order confirmed before 15:00 CST — Same-day dispatch via DHL Express or FedEx International Priority
• Order confirmed after 15:00 CST — Next business day dispatch, with tracking number issued within 2 hours of pickup
• Transit times (typical): Southeast Asia 2–3 days | Middle East 3–4 days | Europe 3–5 days | Americas 4–6 days
• Documentation included: Commercial invoice, packing list, and certificate of origin. ATEX/IECEx certificates and manufacturer datasheet available on request.
• Customs clearance: HS code 9031809090 declared. We provide accurate valuation documentation to prevent customs delays. Import duty responsibility lies with the buyer — contact us for DDP (Delivered Duty Paid) arrangements on large orders.

For plant shutdowns or turnaround projects where delivery timing is critical, contact us directly before placing the order. We can confirm stock availability, reserve units, and coordinate with your freight forwarder or 3PL to meet your maintenance window.

Contact Information

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