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21000-34-05-15-056-04-02 | Bently Nevada 0.5m Cable Proximity Probe Housing Assembly
Introduction to the 21000-34-05-15-056-04-02 Proximity Probe Housing Assembly
When industrial machinery demands precise vibration monitoring in harsh environments, the 21000-34-05-15-056-04-02 delivers a robust solution. This Bently Nevada assembly combines an aluminum body with a 304 stainless steel sleeve for durability. It includes a 3300 XL 8 mm probe with connector protector, making it suitable for hazardous area approvals. The unit weighs 1.1 kg (2.4 lb) typical without fittings, ensuring easy handling during installation.

Key Features and Technical Specifications of the 21000-34-05-15-056-04-02
- Probe option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
- Probe cable length: 0.5 m (20 in) for flexible mounting.
- Standoff adapter: 1.5 in for precise positioning.
- Probe penetration: 5.6 in for deep reach into machinery.
- Fitting option: One 3/4-14 NPT plug only, with explosion-proof fittings available for CA versions.
- Mounting thread: 3/4-14 NPT (required when standoff adapter length is not 00).
- Maximum (C) + (D) dimension: 13.5 in (34.3 cm) with visible probe P/N and S/N not visible.
- Material: Aluminum body with 304 stainless steel sleeve for corrosion resistance.
- CSA Type 4 enclosure rating for hazardous area use.
This assembly is fully compliant with API 670 Standard for externally mounted proximity probe housings, ensuring reliable performance in critical applications.
Real-World Applications for the 21000-34-05-15-056-04-02
In petrochemical plants, this housing assembly monitors rotating equipment like pumps and compressors. It also excels in power generation turbines where vibration detection prevents catastrophic failures. The CSA explosion-proof rating makes it ideal for oil and gas refineries. Additionally, its 0.5m cable simplifies installation in tight spaces.

Installation Guide for the Bently Nevada 21000-34-05-15-056-04-02
Mount the assembly using the 3/4-14 NPT thread for secure attachment. Ensure the standoff adapter is set to 1.5 in for optimal probe clearance. Use the included 0-rings and thread seal to prevent leaks. For hazardous areas, select CA version with E:00, E:01, E:02, or E:04 options for explosion-proof rating. Always follow the manufacturer's manual for wiring and torque specifications.
Maintenance and Reliability Tips
Inspect the dome cover and O-rings periodically for wear. Verify the probe cable length (0.5 m) remains free from kinks. The aluminum and stainless steel construction resists corrosion, extending service life. Regular calibration checks ensure accurate vibration data. For optimal reliability, replace the assembly if probe damage is detected.
Compatibility and Integration
This assembly works with Bently Nevada monitoring systems that accept 8 mm proximity probes. It integrates with existing 3300 XL series hardware. The CSA Type 4 enclosure allows use in hazardous environments. Ensure the mounting thread (3/4-14 NPT) matches your conduit system for seamless installation.
Frequently Asked Questions about the 21000-34-05-15-056-04-02
Q: What is the cable length of the 21000-34-05-15-056-04-02?
A: The probe cable length is 0.5 m (20 in) as specified in the ordering information.
Q: Is this housing assembly explosion-proof?
A: Yes, when ordered with CA version and E:00, E:01, E:02, or E:04 options, it is CSA rated explosion-proof for hazardous areas.
Q: What material is the body made of?
A: The body is aluminum with a 304 stainless steel sleeve for durability and corrosion resistance.
Q: What is the weight of the 21000-34-05-15-056-04-02?
A: It weighs 1.1 kg (2.4 lb) typical without fittings.
Q: What mounting thread does this assembly use?
A: It uses a 3/4-14 NPT mounting thread, required when the standoff adapter length option is not 00.
Product Support and Availability
The 21000-34-05-15-056-04-02 is in stock and ready to ship from Petro Auto Tech. As a trusted supplier, we offer new and original factory-packed units with a 12-month warranty. Contact our team for lifecycle status and ordering assistance.
| Part Number | 21000-34-05-15-056-04-02 |
| Condition | In Stock |
| Stock Status | In Stock (Ready to Ship) |
| Weight | 0.5 kg |
| Warranty | 12 Month |
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Shipping Port: Xiamen
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