Product Overview
The Bently Nevada 21000-16-05-00-050-03-02 is a precision-engineered Proximity Probe Housing Assembly designed for reliable vibration monitoring in critical rotating machinery. This model combines a rugged aluminum body with a 304 stainless steel sleeve, ensuring durability in demanding industrial environments. As part of the 21000 series, this assembly meets the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings, making it a trusted choice for turbomachinery protection systems.
This housing assembly is rated explosion-proof for hazardous areas and carries Canadian Standards Association (CSA) approvals. It is certified as a CSA Type 4 enclosure, providing protection against water and dust ingress. The 21000-16-05-00-050-03-02 is available with hazardous area approved proximity probes for intrinsically safe applications, offering flexibility for various installation requirements.
Technical Specifications
The following specifications are directly from the manufacturer for the 21000-16-05-00-050-03-02:
| Parameter |
Value |
| Probe Option |
3300 XL 8 mm probe with connector |
| Probe Cable Length |
0.5 m (20 in) |
| Standoff Adapter |
None |
| Probe Penetration |
5.0 in |
| Fitting Option |
One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, one cable seal grip with grommets for cable sizes 1/8 to 3/16, 1/4 to 5/16, and 5/16 to 3/8 inches |
| Mounting Thread |
3/4-14 NPT |
| Material |
Aluminum body with 304 stainless steel sleeve |
| Maximum (C) + (D) Dimension |
13.5 in (34.3 mm) with visible probe P/N and S/N |
| Weight |
1.1 kg (2.4 lb) typical, without fittings |
These specifications ensure precise mounting and reliable performance in your monitoring system.
Key Features & Benefits
-
Explosion-proof rating for hazardous area installations
-
CSA Type 4 enclosure certified for water and dust resistance
-
API 670 compliance for externally mounted proximity probe housings
-
Durable construction with aluminum body and stainless steel sleeve
-
Multiple fitting options for flexible conduit connections
Industry Applications
This housing assembly is ideal for vibration monitoring on compressors, turbines, pumps, and other rotating equipment in industries such as oil and gas, power generation, and petrochemical processing. In a refinery setting, the Bently Nevada 21000-16-05-00-050-03-02 provides reliable shaft vibration measurement, enabling early detection of mechanical faults and reducing unplanned downtime. Its explosion-proof design makes it suitable for Class I, Division 1 hazardous areas, ensuring safety and compliance.
Installation & Setup Guidance
Proper installation is critical for accurate vibration monitoring. Follow these steps for optimal performance:
- Verify the mounting thread (3/4-14 NPT) matches your installation point.
- Ensure the probe penetration (5.0 in) is correctly set according to your machine's requirements.
- Use the provided NPT plug and reducer for conduit connections, and select the appropriate grommet size for your cable.
- Torque the housing to manufacturer specifications to avoid damage to the O-rings.
Maintenance & Reliability
Routine inspection of the housing assembly—checking for loose fittings, damaged O-rings, or corrosion—will extend service life. The stainless steel sleeve resists corrosion, while the aluminum body provides lightweight durability. Regular maintenance reduces the risk of probe misalignment and ensures consistent vibration data, contributing to lower overall operating costs.
Selection Guide & Purchasing Advice
When selecting a replacement or new housing assembly, confirm that the probe option, cable length, and mounting thread match your existing system. The 21000-16-05-00-050-03-02 is a new, original product in factory packing, backed by a 12-month warranty. For additional configuration options or technical support, contact PLC Source PRO to ensure you get the exact part needed for your application.