In Stock






21000-34-00-30-050-03-02 | Bently Nevada 3.0 in Standoff Adapter Proximity Probe Housing
Introduction to the 21000-34-00-30-050-03-02
When machinery vibration threatens uptime, the 21000-34-00-30-050-03-02 from Bently Nevada provides a robust solution. This Proximity Probe Housing Assembly is engineered for hazardous area monitoring. It combines a 3.0 in standoff adapter with a 5.0 in probe penetration. The assembly includes a 3300 XL 8 mm probe with connector protector. It offers selectable hazardous area approvals for flexibility.

Key Features and Technical Specs
- Standoff Adapter: 3.0 in length for precise mounting.
- Probe Penetration: 5.0 in for deep measurement access.
- Probe Cable Length: 1.0 m, with visible probe P/N and S/N up to 17.0 in (43.18 cm).
- Maximum Dimension (C+D): 32.9 in (83.5 cm) for installation clearance.
- Weight: 1.1 kg (2.4 lb) typical, without fittings.
- Material: Aluminum body with 304 stainless steel sleeve for durability.
- Mounting Thread: 3/4-14 NPT for secure fitting.
- Fittings Included: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and cable seal grip with three grommet sizes.
One distinctive spec is the 5.0 in probe penetration. This allows the sensor to reach deeper into machinery, capturing vibration data from critical internal components. It enhances early fault detection in rotating equipment.
Real-World Applications
In oil and gas facilities, the 21000-34-00-30-050-03-02 monitors compressor vibrations. Its CSA Type 4 enclosure withstands harsh environments. For power generation, it tracks turbine shaft movement. The assembly complies with API 670 standards. This ensures reliable performance in critical applications.

Installation Guide
Mount the housing using the 3/4-14 NPT thread. Ensure the standoff adapter is correctly positioned. The 3.0 in length provides optimal clearance. Connect the probe cable (1.0 m) to the system. Use the included fittings for conduit connections. Verify the probe sleeve fits the mounting hole depth. Always follow Bently Nevada's manual for torque specifications.
Routine Care and Reliability
Inspect the O-rings and thread seal periodically. Replace them if worn to maintain explosion-proof integrity. Check the cable seal grip grommets for damage. The aluminum body resists corrosion in most industrial settings. Regular inspection reduces unplanned downtime. This extends the assembly's service life.
Compatible Systems
The 21000-34-00-30-050-03-02 works with Bently Nevada monitoring systems. It supports 3300 XL 8 mm probes. The assembly is compatible with CSA-approved hazardous area installations. It integrates with API 670 compliant machinery protection systems.
Troubleshooting Common Issues
If vibration readings are erratic, check the probe cable connection. Ensure the probe penetration is set to 5.0 in. Verify the standoff adapter is not loose. Inspect the mounting thread for debris. If the housing does not seal, replace the O-rings. For persistent issues, consult the Bently Nevada technical manual.
FAQs about the 21000-34-00-30-050-03-02
Q: What is the standoff adapter length for this model?
A: The standoff adapter is 3.0 in, as specified in the ordering information.
Q: What probe cable length is included?
A: The probe cable length is 1.0 m, with a maximum visible probe dimension of 17.0 in (43.18 cm).
Q: Is this housing suitable for hazardous areas?
A: Yes, it includes selectable hazardous area approvals and is CSA certified as explosion proof.
Q: What is the weight of the assembly?
A: The typical weight is 1.1 kg (2.4 lb) without fittings.
Q: What mounting thread does it use?
A: It uses a 3/4-14 NPT mounting thread.
Product Support and Availability
The 21000-34-00-30-050-03-02 is in stock and ready to ship. Petro Auto Tech offers new and original factory-packed units. Contact our team for pricing and delivery options.
| Part Number | 21000-34-00-30-050-03-02 |
| Condition | In Stock |
| Stock Status | In Stock (Ready to Ship) |
| Weight | 0.5 kg |
| Warranty | 12 Month |
Shipping
Shipping Port: Xiamen
We ship worldwide via DHL, FedEx, UPS, TNT, and EMS. In-stock items are dispatched within 24 hours of payment confirmation. Tracking number will be provided after shipment.
Payment
Secure payment processing. Contact us for corporate account and bulk order pricing.
Warranty
All products come with a 1-year warranty against manufacturing defects. We guarantee 100% new and original products sourced directly from authorized manufacturers.
Latest News
Stay informed with the latest industry insights, product announcements, and technical articles.
