Choosing the Right Proximity Probe Housing: The 21000-16-05-00-105-03-02
When monitoring critical rotating machinery, the housing assembly is as vital as the probe itself. The Bently Nevada 21000-16-05-00-105-03-02 Proximity Probe Housing Assembly provides a robust, explosion-proof enclosure for reliable vibration and position measurement. This guide helps you evaluate its specifications against your application needs.
What This Assembly Delivers
This assembly integrates a 3300 XL 8 mm proximity probe with a 0.5 m (20 in) cable into a rugged aluminum body with a 304 stainless steel sleeve. The 21000-16-05-00-105-03-02 is designed for externally mounted installations per API 670 standards. It includes a dome cover, threaded ports for conduit, and optional fittings. The unit is CSA certified as Type 4 enclosure and rated explosion-proof for hazardous areas.
Technical Specifications Breakdown
Key parameters for the 21000-16-05-00-105-03-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Probe Option | 16 3300 XL 8 mm probe |
| Probe Cable Length | 05 0.5 m (20 in) |
| Standoff Adapter | No standoff adapter (00) |
| Probe Penetration (Option D) | 105 = 10.5 in |
| Fittings | One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, one cable seal grip with grommets |
| Mounting Thread | 02 3/4-14 NPT |
| Material | Aluminum body with 304 stainless steel sleeve |
| Weight (typical, without fittings) | 1.1 kg (2.4 lb) |
| Hazardous Area Approval | CSA Class 1 Divisions 1 and 2 Groups C and D; Class 2 Divisions 1 and 2 Groups E, F, G; Class III; Enclosure Type 4; T5 @ Ta = -50 °C to +40 °C; T4 @ Ta = -50 °C to +80 °C |
Real-World Applications
The 10.5 in probe penetration allows installation through thick machine casings. The CSA explosion-proof rating ensures safe operation in oil and gas refineries, chemical plants, and other classified areas. The 3300 XL 8 mm probe provides reliable proximity sensing for API 670 compliant systems.
Installation Guidance
When mounting the 21000-16-05-00-105-03-02, ensure the mounting thread (3/4-14 NPT) is properly sealed. For probe penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may be needed to reduce side view effects. If the total probe penetration (C plus D) exceeds 300 mm (12 in), add sleeve support near the probe to prevent resonance. The adjustment range of probe penetration option D is 13 mm (± 0.5 in). Use the provided cable seal grip with appropriate grommet size for your cable.
Maintenance and Reliability
Periodically inspect the housing assembly for signs of corrosion or damage, especially in harsh environments. Verify that all fittings and seals remain tight to maintain the explosion-proof integrity. The aluminum body and stainless steel sleeve offer good corrosion resistance. Follow the manufacturer's guidelines for cleaning and avoid disassembly of the probe assembly.
Compatibility and Integration
This assembly is designed for use with Bently Nevada monitoring systems that accept 3300 XL 8 mm proximity probes. The 0.5 m cable length suits installations where the probe is close to the monitor or junction box. The CSA certification ensures compliance with North American hazardous area requirements. The assembly is fully compliant with API 670 standard for externally mounted proximity probe housings.
Purchasing Advice from AutoDCSTech
Before ordering, verify that the 21000-16-05-00-105-03-02 matches your required probe penetration (10.5 in) and cable length (0.5 m). Confirm the mounting thread (3/4-14 NPT) fits your machine case. AutoDCSTech offers this assembly as new and original in factory packing with a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21000-16-05-00-105-03-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
