BENTLY NEVADA 330194-17-25-15-00 Proximity Probe

330194-17-25-15-00 — Stop the Clock on Your Downtime. Ship Today from Xiamen.

Every hour a turbine, compressor, or pump sits idle because of a failed proximity probe is money bleeding out of your operation. The BENTLY NEVADA 330194-17-25-15-00 is a 25 mm eddy-current proximity probe from the 3300 XL Series — one of the most widely deployed shaft monitoring platforms in the oil & gas, power generation, and petrochemical industries. We stock it. We ship it. DHL/FedEx express from Xiamen, door to your site, typically within 3–5 business days worldwide.

Don’t wait 8 weeks for an OEM lead time. Call us now.

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

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Swapping a 330194-17-25-15-00 in the field is straightforward if you follow the sequence. Skip a step and you’ll be chasing a ghost fault for hours.

Step 1 — Confirm the fault is the probe, not the driver or monitor. Before pulling the probe, check the Proximitor driver output voltage with a calibrated DVM. At a 1.0 mm gap on AISI 4140 steel, you should read approximately –10.2 VDC. A reading outside –2 VDC to –18 VDC with the probe connected points to a probe or cable fault. A reading of –24 VDC (supply rail) with the probe disconnected is normal — if you see –24 VDC with the probe connected, the probe coil is open-circuit. Replace the probe.

Step 2 — Match the replacement probe to the existing driver. The 330194-17-25-15-00 is a 25 mm probe and requires a 25 mm-compatible Proximitor driver (e.g., 3300/16-17-xx series). Do not substitute a 25 mm probe onto an 8 mm driver — sensitivity will be wrong and the monitor will generate spurious alarms or miss real events. If the driver part number ends in -01 (8 mm), you need a driver swap too.

Step 3 — Verify extension cable continuity before installation. The 15 m extension cable (encoded in the part number suffix -15-00) is a common failure point in high-vibration environments. Use a continuity tester on the center conductor and shield before threading the new probe. A shield-to-conductor short will cause a noisy output that looks like real vibration — a classic trap.

Step 4 — Set the installation gap correctly. Mount the probe so the tip-to-shaft gap is 1.0 mm (40 mil). Use a calibrated gap tool or feeler gauge. Tighten the lock nut to the torque spec in the BN installation drawing — under-torqued probes migrate in service and cause slow drift alarms. After tightening, re-verify gap voltage.

Step 5 — Check monitor channel configuration. If this probe is replacing a failed unit on a thrust (axial position) channel, confirm the monitor is set for DC position measurement, not AC vibration. On 3300 XL monitors, this is a DIP switch or software parameter depending on firmware revision. A vibration-configured channel on a thrust probe will read zero position offset and mask real axial movement — a dangerous condition on steam turbines.

Common fault codes on 3300 XL monitors:

• OK LED off / Not OK relay energized — probe gap out of linear range, open cable, or driver power loss. Start with gap check.
• Intermittent alarm with no process change — cable connector corrosion or loose MIL-C-5015 coupling nut. Clean and re-torque.
• High vibration reading at 1× running speed only — probe is picking up a shaft surface defect (scratch, keyway, or repair weld). Rotate probe 90° to confirm; if alarm disappears, the shaft surface needs attention, not the probe.
• Slow drift on position channel — thermal expansion of probe mounting bracket. Check bracket material and re-zero after thermal stabilization.

Reliability in Harsh Conditions

The 330194-17-25-15-00 is not a lab instrument. It was designed to survive the environments that destroy lesser sensors — and it does so without complaint.

The probe body is machined from stainless steel with a PEEK (polyether ether ketone) tip housing. PEEK maintains dimensional stability from cryogenic temperatures to +250 °C and resists hydrocarbon fluids, H₂S, and steam condensate — the three most common chemical attack vectors in turbine bearing pedestals. The armored integral cable uses a stainless steel braid over a PTFE-insulated conductor, rated for continuous flexing in environments where standard PVC cables crack within months.

Vibration endurance is validated to 20 g RMS broadband per BN qualification testing — sufficient for direct mounting on gearbox housings and reciprocating compressor frames where other probe types require remote mounting. The IP67 rating on the probe tip means temporary immersion in bearing oil or wash-down water will not compromise the measurement.

At the high end of the temperature range (+177 °C), the probe maintains sensitivity within ±1% of nominal — critical for hot-section turbine applications where a drifting probe is indistinguishable from real shaft movement. This is why the 3300 XL platform remains the reference standard for API 670 machinery protection systems more than two decades after its introduction.

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. Here’s how a typical urgent order moves:

• Day 0 (Order confirmed before 14:00 CST): Unit pulled from shelf, inspected, and packed in anti-static foam with original documentation. Export invoice and packing list prepared.
• Day 1: Shipment collected by DHL/FedEx courier. Tracking number issued to buyer within 2 hours of pickup. HS code 9031.80 declared for smooth customs clearance.
• Day 2–4: Transit via DHL Express Worldwide or FedEx International Priority. Most destinations in Southeast Asia, Middle East, and Europe receive within this window.
• Day 3–5: Delivery to site in North America, South America, and Oceania via express routing.

We handle all export documentation: commercial invoice, packing list, certificate of origin (CO), and — where required — a material test report or calibration certificate. For projects requiring formal import clearance support, we can provide HS code confirmation and assist with customs broker coordination.

Payment terms: T/T bank transfer (preferred for speed), PayPal, and FOB Xiamen trade terms available. For repeat buyers, open account terms can be arranged.

If your plant is facing an unplanned shutdown and you need the fastest possible routing, contact us directly on WhatsApp — we will check stock, confirm lead time, and arrange same-day dispatch for orders received before 14:00 CST.

Contact Information

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