Excellent PLC
Product Description
The Bently Nevada 21000-28-05-15-050-03-02 is a robust aluminum proximity probe housing assembly designed for external mounting of reverse-mount proximity probes in machinery condition monitoring systems. It is explosion-proof (CSA approved), suitable for hazardous environments, and fully complies with API 670 standards. The assembly includes a dome cover, threaded ports, probe sleeve, and optional accessories such as conduit fittings and standoff adapters.
Applications
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Turbomachinery monitoring
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Compressors and pumps
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Gearboxes and motors
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Critical rotating equipment in oil & gas, petrochemical, and power generation plants
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Environments requiring CSA Type 4 or explosion-proof enclosures
Advantages
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Compatible with Bently Nevada 3300 XL series proximity probes
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CSA certified explosion-proof housing
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Fully API 670 compliant
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Modular configuration with customizable probe length, penetration, and fittings
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Supports long probe sleeves with optional oil seal
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Operates in extreme temperatures (up to +177°C)
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Rugged aluminum housing with corrosion resistance
Technical Specifications
| Parameter | Specification |
|---|---|
| Housing Type | Aluminum with stainless steel sleeve |
| Probe Compatibility | 3300 XL 8mm, 11mm, NSv series |
| Operating Temperature Range | -51°C to +177°C |
| Weight | 1.1 kg (2.4 lb) |
| Housing Body Diameter | 83.3 mm (3.28 in) |
| Enclosure Rating | CSA Type 4 |
| Hazardous Location Rating | Class I Div 1 & 2 (Groups C, D) |
| Mounting Threads (Option F) | 3/4-14 NPT (Standard) |
| Probe Cable Length (Option B) | 0.5 m to 1.0 m (typical) |
| Probe Penetration (Option D) | 25.4 mm and up |
| Standoff Adapter Length (Option C) | 38 mm to 191 mm (recommended in 13 mm steps) |
Frequently Asked Questions (FAQ)
Q1: What types of probes are compatible with the 21000 housing?
A1: The housing is compatible with Bently Nevada 3300 XL 8mm, 11mm, and NSv reverse-mount probes.
Q2: Is the housing explosion-proof?
A2: Yes, it meets CSA certification for Class I, II, and III hazardous locations and is rated explosion-proof.
Q3: Can this assembly be installed in outdoor or corrosive environments?
A3: Yes, the aluminum body with stainless steel sleeve and CSA Type 4 rating ensures it withstands harsh conditions.
Q4: What is the maximum length of probe penetration allowed?
A4: Up to 742 mm, depending on the probe cable length and standoff adapter used.
Q5: What is the operating temperature range of the housing?
A5: It operates from -51°C to +177°C and is also suitable for storage within this range.
Q6: Are custom probe sleeves supported?
A6: Yes, custom sleeves can be ordered depending on machine geometry and penetration requirements.
Q7: Is sleeve support required for long probes?
A7: Yes, for sleeve lengths over 304 mm (12 in), support (e.g., part 37948-01) is recommended to reduce resonance.
Q8: Can I use the 21000 housing in non-North American installations?
A8: Yes, standard 21000 (non-CA) models are suitable; CA models are restricted to North American use.
Q9: What conduit fittings are available?
A9: Options include explosion-proof NPT fittings, plugs, reducers, and cable grips.
Q10: Does the housing come with a probe included?
A10: No, the probe is selected as part of the ordering options and may be included based on configuration.
Related Models (Same Series or Function)
| Model Number | Description | Housing Material | Weight | Diameter |
|---|---|---|---|---|
| 21000-16-10-15-035-03-02 | 8mm probe, 1m cable, standoff adapter | Aluminum | 1.1 kg | 83.3 mm |
| 21000-29-10-15-050-03-02 | 11mm probe, 1m cable, 5.0” penetration | Aluminum | 1.1 kg | 83.3 mm |
| 21000-26-05-15-045-03-02 | NSv probe, 0.5m cable, 4.5” penetration | Aluminum | 1.1 kg | 83.3 mm |
| 24701-16-10-15-035-03-02 | Stainless version with 8mm probe | Stainless Steel | 1.8 kg | 78.2 mm |
| CA21000-28-05-15-050-03-02 | CSA approved explosion-proof model | Aluminum | 1.1 kg | 83.3 mm |
| 164818-02-030-01-01-01-05 | Compact housing with 8mm probe | Stainless Compact | ~0.8 kg | 60 mm |
Popular Bently Nevada Models
| Model Number | Description | Type | Weight | Application |
|---|---|---|---|---|
| 330104-00-06-10-11-00 | 8mm Proximity Probe | Proximity Probe | 0.3 kg | General machinery monitoring |
| 330180-91-CN | 3300 XL Proximitor Sensor | Proximitor Sensor | 0.45 kg | Proximity monitoring |
| 3500/42M-01-00 | Proximitor Seismic Monitor | Vibration Monitoring Module | 0.9 kg | Seismic & vibration measurement |
| 3500/22M | Keyphasor Module | Speed & phase measurement | 0.75 kg | Turbomachinery monitoring |
| 3500/25 | Keyphasor I/O Module | Condition Monitoring Module | 0.8 kg | Rotational equipment |
| 3500/15 | Power Supply Module | Power Module | 1.1 kg | System power supply |
