Bently Nevada 21000-16-05-00-094-03-02 Probe Housing Assembly

Product Overview

The Bently Nevada 21000-16-05-00-094-03-02 is a proximity probe housing assembly for industrial machinery monitoring. It provides a protective mounting arrangement for compatible reverse-mount proximity probes.

This configuration specifies a 3300 XL 8 mm proximity probe, a 0.5 m cable, and a 9.4-inch probe penetration dimension. The housing uses an aluminum body and a 304 stainless steel sleeve.

• Brand: Bently Nevada
• Model: 21000-16-05-00-094-03-02
• Series: 21000 Proximity Probe Housing Assemblies
• Product Type: Proximity probe housing assembly
• Condition: New and original in factory packing
• Warranty: 12 months
• Shipping: FedEx, UPS, or DHL, subject to destination and service availability
• Dispatch: Typically 24–48 hours after order confirmation and stock verification

Technical Specifications

Measurement note: The 9.4-inch value defines the housing penetration dimension. It does not indicate the probe's electrical measurement range. Frequency response, sensitivity, linearity, and resolution depend on the compatible probe and driver system.

Ordering Code Breakdown

• 21000: Proximity Probe Housing Assemblies series.
• 16: 3300 XL 8 mm probe option with connector.
• 05: 0.5 m probe cable length.
• 00: No standoff adapter.
• 094: Probe penetration dimension D of 9.4 inches.
• 03: Specified plug, reducer, and cable seal grip configuration.
• 02: 3/4-14 NPT mounting thread.

Verify the complete ordering code before purchasing. Suffix differences can change installation dimensions, fittings, and mounting compatibility.

Core Functions and Engineering Benefits

• Probe protection: Supports the specified probe installation.
• Defined mounting geometry: Helps engineers plan probe positioning and mounting depth.
• Conduit connection: Threaded ports support suitable conduit arrangements.
• Cable sealing: The specified cable seal grip accommodates the listed cable diameter ranges.
• Maintenance access: The threaded dome cover allows inspection when site safety procedures permit.

Installation Guide

1. Verify the equipment: Check the model, probe type, mounting thread, and penetration dimension against the approved drawing.
2. Confirm the mounting depth: Check the probe target, clearance, and machine geometry before installation.
3. Inspect the mounting port: Check the 3/4-14 NPT thread for damage and contamination.
4. Install the housing: Follow the manufacturer's installation instructions and site procedures.
5. Fit the probe and cable: Use the specified probe arrangement and correct cable seal grip insert.
6. Inspect the seals: Check the O-rings, thread seal, cover, and cable entry components.
7. Verify hazardous-area requirements: Confirm certification, temperature class, wiring method, and installation drawings.
8. Commission the system: Verify probe gap, driver compatibility, signal stability, and monitor channel settings.

Commissioning, Diagnostics, and Maintenance

The housing is a mechanical assembly. It does not independently measure shaft vibration or generate diagnostic data. With a compatible Bently Nevada probe and driver, the complete system can support shaft displacement and vibration monitoring.

Field example 1: Unstable vibration readings

A technician observes intermittent vibration alarms after replacing a probe. The technician checks housing mounting, cable seals, connectors, probe gap, and cable routing. The technician then verifies driver output and monitoring channel settings. This process helps distinguish mechanical installation problems from electrical signal faults.

Field example 2: Repeated probe gap alarms

A monitoring channel reports an abnormal gap voltage after maintenance. The engineer checks mounting depth, target clearance, thread engagement, and probe condition. The engineer then compares the reading with the applicable probe and driver specifications.

Field example 3: Moisture near the cable entry

A technician finds moisture around the cable entry. The technician inspects the seal grip, cover O-ring, thread seal, and conduit arrangement. The technician replaces damaged sealing components according to the approved maintenance procedure.

• Inspect the housing body, cover, sleeve, and mounting threads.
• Check cable seals and O-rings for deterioration.
• Confirm secure cable routing and suitable strain relief.
• Review probe gap voltage and vibration trends in the monitoring system.
• Investigate recurring alarms before replacing the housing.
• Follow site isolation procedures before servicing the assembly.

Compatibility and Selection Notes

The 21000-16-05-00-094-03-02 must match the installed probe, machine geometry, cable arrangement, and hazardous-area requirements.

• Confirm that the installation requires the specified 3300 XL 8 mm probe arrangement.
• Verify that the 0.5 m cable length suits the installation.
• Confirm that the 9.4-inch penetration dimension meets the mounting requirements.
• Check that the machine connection accepts a 3/4-14 NPT thread.
• Verify the fittings against conduit requirements and cable diameters.
• Confirm compatibility across the probe, extension cable, driver, and monitor.

Model Comparison and Technical Recommendation

Related product: Bently Nevada 21000-16-05-15-037-01-02 Proximity Probe Housing Assembly.

Technical recommendation: Choose the 9.4-inch configuration when the approved drawing requires that penetration dimension. Consider the 3.7-inch configuration when the installation requires a shorter penetration and the specified standoff arrangement. Confirm all suffix definitions and dimensions before substitution.

Environmental Ratings and Certifications

The manufacturer describes the 21000 and 24701 housing families as suitable for specified industrial and hazardous-area installations. Approval depends on the exact assembly and installation conditions.

• CSA Type 4: Enclosure rating for approved configurations.
• Class I: Divisions 1 and 2, Groups C and D, subject to the applicable approval.
• Class II: Divisions 1 and 2, Groups E, F, and G, subject to the applicable approval.
• Class III: Subject to the applicable certification.
• Temperature classification: T5 at -50°C to +40°C and T4 at -50°C to +80°C for the specified approved configuration.
• Non-incendive circuit condition: Connection must follow drawing 140979 where applicable.
• RoHS: Directive 2011/65/EU.
• FCC: Part 15 compliance is stated in the supplied product information.

Do not assume every 21000 assembly has identical hazardous-area approvals. Verify the product nameplate, certification documents, installation drawing, and applicable local requirements.

Typical Applications

• Oil and gas: Mounting proximity probes on rotating machinery.
• Petrochemical plants: Supporting shaft displacement and vibration monitoring installations.
• Power generation: Probe mounting for compatible turbine and generator monitoring systems.
• Industrial compressors: Providing a defined mounting arrangement for proximity probe installations.
• Process industries: Supporting machinery condition monitoring where dedicated probe housings are required.

The housing provides mechanical support. Measurement performance depends on the compatible probe, driver, monitor, target material, and installation geometry.

Packaging, Shipping, and Warranty

• Condition: New and original in factory packing.
• Warranty: 12 months under the supplier's confirmed warranty terms.
• Shipping: FedEx, UPS, or DHL, subject to destination and service availability.
• Dispatch: Typically 24–48 hours after order confirmation and stock verification.
• Packaging: Factory packaging with the confirmed housing configuration and included accessories.

Packaging list: One specified Bently Nevada 21000 housing assembly and the fittings and sealing components included in the confirmed factory configuration. Verify whether the probe, connector, and accessories are included in the specific order.

Keep the product label, model number, and purchase documentation for warranty claims. Contact the sales team for coverage details, return authorization, and troubleshooting instructions.

Global PLC Spare HUB's Insight

From a field maintenance perspective, housing dimensions deserve the same attention as probe specifications. A compatible probe cannot compensate for an incorrect mounting depth.

For example, a plant may replace a probe after repeated vibration alarms. If the replacement housing has a different penetration dimension, the probe may sit incorrectly relative to the shaft target. This can cause an abnormal gap voltage or unreliable readings.

Record the complete model number, mounting depth, cable length, fitting arrangement, and probe type before ordering. Compare these details with the machine drawing and installed monitoring system.

For hazardous-area installations, verify the exact certification and installation drawing before replacement. This check helps reduce commissioning delays and compatibility risks.

Frequently Asked Questions

Q1: What is the main function of the Bently Nevada 21000-16-05-00-094-03-02?

It provides a mechanical housing and mounting arrangement for a compatible 3300 XL 8 mm proximity probe installation. The complete measurement system can support machinery displacement and vibration monitoring.

Q2: Does the 9.4-inch dimension indicate the probe's measurement range?

No. It specifies housing penetration dimension D. The probe's electrical measurement range depends on the installed probe and compatible driver.

Q3: Can this assembly replace the 21000-16-05-15-037-01-02?

Not automatically. The models specify different penetration dimensions and fitting configurations. Compare the machine drawing, mounting depth, standoff arrangement, and complete ordering information before replacement.

Q4: How should engineers troubleshoot unstable vibration readings?

Check the mounting position, probe gap, cable condition, connector, and cable routing first. Then verify the driver, monitor configuration, grounding, and signal readings according to the approved maintenance procedure.

Q5: Does the housing determine measurement frequency response and sensitivity?

No. These characteristics belong to the complete measurement chain. Check the probe, driver, extension cable, and monitoring system documentation for the applicable specifications.

Q6: Is the assembly approved for hazardous areas?

The 21000 family has published CSA hazardous-area approvals for specified configurations. Verify the exact assembly's certification, temperature class, wiring method, and installation drawing before use.

Q7: What should buyers confirm before ordering?

Confirm the complete model number, probe type, cable length, penetration dimension, mounting thread, fittings, and certification requirements. Provide the nameplate or installation drawing when requesting a replacement.

Q8: What are the shipping and warranty arrangements?

The stated warranty is 12 months. FedEx, UPS, and DHL are available subject to destination and service conditions. Dispatch typically takes 24–48 hours after order confirmation and stock verification.

Q9: What information helps prevent incorrect housing selection?

Provide the machine model, existing housing number, probe model, mounting depth, cable routing requirements, and hazardous-area classification. These details help verify mechanical and system compatibility.

Q10: How can buyers request a quotation?

Contact Global PLC Spare HUB with the full part number, quantity, destination country, and delivery preference. Request confirmation of stock, factory packing, included fittings, dispatch time, and warranty terms.

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