Bently Nevada 31000-26-05-00-100-03-02 Proximity Probe Housing

31000-26-05-00-100-03-02 — Stop the Clock on Your Downtime

Every minute a turbine or compressor sits idle, the losses compound. A failed proximity probe housing on a Bently Nevada 3300 XL system doesn’t just trigger a trip alarm — it shuts down your entire machinery protection loop. The 31000-26-05-00-100-03-02 Proximity Probe Housing Assembly is the exact OEM-spec component you need to restore full transducer alignment and get your rotating equipment back online. We stock it. We ship it today. From Xiamen to your site — DHL or FedEx, door to door.

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

Quick Technical Datasheet

Troubleshooting & Replacement Tips

The 3300 XL proximity probe housing is a passive mechanical component, but its failure modes are deceptively costly. Here’s what field experience tells you:

Common Failure Indicators:

• Gap voltage drift: If your Proximitor output reads outside the –10 VDC to –18 VDC window at nominal gap, suspect housing deformation or probe thread damage before condemning the probe itself. A bent or cracked housing shifts the probe face angle, causing non-linear gap readings.
• Intermittent OK/NOT OK relay chatter: Often traced to a loose housing locknut allowing micro-movement under vibration. The 3500/22M monitor will log spurious danger events. Check housing torque spec first — typically 20–25 Nm depending on bracket configuration.
• Probe cable strain at entry point: Housing assemblies with cracked cable glands allow moisture ingress. This degrades the coaxial cable dielectric and shifts the system sensitivity from the nominal 200 mV/mil. You’ll see erratic vibration readings that don’t correlate with actual shaft motion.

Step-by-Step Replacement Procedure:

1. Isolate and document: Before removal, record the current gap voltage from the Proximitor output terminal (pin 1 to COM). Note the physical gap measurement with a feeler gauge — you’ll need to restore this exactly (typically 1.0–1.5 mm for 8 mm probes).
2. De-energize the Proximitor: Remove the –24 VDC supply from the Proximitor sensor. Do not simply disconnect the probe cable while powered — this causes a NOT OK condition and may trigger a false trip on the 3500 rack if bypass is not engaged.
3. Engage monitor bypass: On the 3500/22M or 3500/42M, activate the bypass switch for the affected channel before disconnecting. This prevents a spurious trip signal from propagating to the DCS or ESD system.
4. Remove the probe assembly: Unthread the probe from the housing using the correct spanner. Mark the probe thread depth with a marker before removal — this is your reference for reinstallation gap setting.
5. Install the new 31000-26-05-00-100-03-02 housing: Thread the housing into the bracket. Do not use thread sealant on the probe thread — it will alter the dielectric properties. Use only the supplied locknut.
6. Reinstall probe and set gap: Thread the probe to the marked depth. Reconnect the Proximitor and verify gap voltage. Adjust in 0.25 mm increments until output is within –10.0 to –10.5 VDC at nominal gap. Tighten locknut to spec.
7. Verify system response: Remove bypass, confirm OK relay energizes, and check that the 3500 rack shows no active alerts on the channel. Log the final gap voltage in your maintenance record.

Configuration Notes:

• No firmware or software configuration is required for this housing — it is a purely mechanical component. However, if the probe itself is also being replaced, verify that the new probe’s sensitivity factor matches the Proximitor calibration (standard: 200 mV/mil for 8 mm probes).
• If replacing on a dual-probe (XY) configuration, replace both housings simultaneously to maintain matched gap voltages and avoid asymmetric vibration readings.
• After replacement, run the machine at low speed and verify vibration trend data is clean before returning to full load.

Reliability in Harsh Conditions

The 31000-26-05-00-100-03-02 housing is built to survive where most components fail. Bently Nevada’s 3300 XL series was engineered for continuous operation in the most demanding rotating machinery environments on the planet — offshore platforms, gas compression stations, and petrochemical reactors where ambient conditions are anything but controlled.

The housing’s stainless steel construction resists corrosion from H₂S-laden atmospheres, hydrocarbon condensate, and aggressive cleaning agents. The precision-machined bore maintains probe concentricity within ±0.01 mm even after thermal cycling between –40°C and +120°C, ensuring that gap calibration holds across seasonal temperature swings. Vibration resistance is validated to IEC 60068-2-6 profiles — the housing will not loosen or shift under the broadband vibration spectrum generated by high-speed turbomachinery. In high-humidity environments, the sealed cable entry prevents moisture from wicking into the coaxial assembly, protecting signal integrity over multi-year service intervals without regreasing or resealing.

Global Express Logistics

Our Xiamen warehouse operates on a same-day dispatch model for in-stock items ordered before 15:00 CST. Here’s how your part moves from our shelf to your site:

• Order confirmation: You receive a proforma invoice and stock confirmation within 2 hours of inquiry.
• Export documentation: Commercial invoice, packing list, and certificate of origin are prepared in parallel with packing. HS Code 9026.80 is pre-declared for smooth customs clearance.
• Carrier selection: DHL Express Worldwide or FedEx International Priority — your choice. Both services offer door-to-door tracking and typically deliver to Southeast Asia in 2–3 days, Europe in 3–5 days, and the Americas in 4–6 days.
• Customs clearance support: We provide full export compliance documentation. For destinations requiring import permits or ECCN classification, our logistics team advises in advance — no surprises at customs.
• Bulk orders: For 5+ units or project-based procurement, sea freight consolidation from Xiamen Port is available with competitive lead times. Contact us for a freight quote.

We understand that a part sitting in customs is as useless as a part that hasn’t shipped. Our documentation is prepared to clear, not to delay.

Contact Information

📧 Email: [email protected]
💬 WhatsApp: +86 18359268345
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