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Product Introduction
The Bently Nevada 21000-28-05-35-020-04-02 Proximity Probe Housing Assembly is a critical component designed for industrial condition monitoring systems. Manufactured by Bently Nevada, a renowned leader in machinery protection and predictive maintenance, this assembly provides robust protection and optimal positioning for proximity transducers in high-vibration environments. The 21000 series is engineered to ensure reliable operation in harsh industrial applications, particularly for rotating machinery where precise vibration and displacement monitoring is essential.
This model features a high-grade protective housing with integrated conduit fittings, cable entry seals, and advanced environmental sealing to ensure that the probe system remains uncompromised in demanding conditions. It is compatible with a variety of eddy-current proximity probes and extension cables from Bently Nevada, delivering a seamless solution for long-term machine diagnostics and protection.
Product Specifications
| Parameter | Details |
|---|---|
| Model Number | 21000-28-05-35-020-04-02 |
| Product Type | Proximity Probe Housing Assembly |
| Compatible Probes | Bently Nevada 7200, 3300, and 3500 Series Probes |
| Material | Stainless Steel / Aluminum (varies by configuration) |
| Enclosure Rating | NEMA 4 / IP66 |
| Cable Entry Size | 1/2″ NPT / M20 (dependent on regional variant) |
| Number of Probe Mounting Ports | 1 or 2 (dual ported models available) |
| Conduit Fittings | Integrated or user-specified |
| Operating Temperature Range | -40°C to +120°C |
| Environmental Protection | Dustproof, Waterproof, Corrosion Resistant |
| Mounting Type | Flange / Stud Mount |
| Grounding | Internal Grounding Lug |
| Certification | CE, RoHS, ATEX (on certain versions) |
| Housing Body Diameter | 83.3 mm |
| Weight | 1.1 kg |
Product Applications
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Turbomachinery Monitoring: Used extensively in gas turbines, steam turbines, and compressors to house proximity probes for shaft displacement and vibration detection.
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Oil & Gas Industry: Ideal for installation on pumps, fans, and motors in refineries and offshore platforms.
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Power Generation: Protects probes monitoring rotating equipment such as generators and large motors.
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Petrochemical Plants: Enables continuous vibration monitoring for critical rotating assets.
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Paper & Pulp Industries: Ensures reliable sensor operation in environments prone to high humidity and contaminants.
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Marine Engineering: Suitable for ship propulsion systems, ensuring safety and performance monitoring.
Product Advantages
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Durability: Rugged construction ensures long-term performance in aggressive environments.
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Environmental Sealing: Certified to NEMA 4/IP66 standards, ensuring protection from dust, water, and corrosion.
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Flexibility: Compatible with a wide range of Bently Nevada proximity probes and extension cables.
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Easy Installation: Multiple mounting options and integrated fittings reduce installation time and complexity.
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Reliable Signal Transmission: Designed to minimize electrical noise and signal degradation.
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Safety Compliance: Available with ATEX and CE certifications for hazardous environments.
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Customizable: Cable lengths, conduit types, and fittings can be tailored for unique site requirements.
Frequently Asked Questions (FAQ)
What is the primary purpose of the Bently Nevada 21000-28-05-35-020-04-02 housing assembly?
It provides secure housing and environmental protection for proximity probes in machinery monitoring systems.
Is this model compatible with the 3500 Series proximity probes?
Yes, it is fully compatible with Bently Nevada’s 7200, 3300, and 3500 series proximity probes.
What type of environments can this housing assembly withstand?
It can handle extreme temperatures, high humidity, dust, water ingress, and corrosive atmospheres.
Does this housing come pre-wired or does it require on-site wiring?
Typically, the housing allows for on-site wiring with flexible cable entry options.
Can the housing be used in hazardous (explosive) environments?
Yes, some variants are ATEX-certified for use in hazardous zones. Check specific certification before use.
Is it possible to mount two probes within a single housing?
Yes, dual-probe models are available for applications requiring redundant or multi-axis monitoring.
What is the cable gland size supported by this model?
It typically supports 1/2″ NPT or M20 cable glands depending on configuration.
What maintenance is required for the housing assembly?
Periodic inspection for seal integrity and corrosion is recommended, but it is largely maintenance-free.
Can I use this housing with non-Bently Nevada probes?
It is optimized for Bently Nevada probes, and compatibility with third-party probes should be validated before use.
How do I order the correct configuration for my application?
Consult the ordering guide or a Bently Nevada representative to specify length, fittings, and probe type.
Recommended Related Models (Same Series or Function)
| Model | Description | Key Features |
|---|---|---|
| 21000-28-05-35-015-04-02 | Probe Housing Assembly with shorter cable length | Compact design, IP66 |
| 21000-28-05-35-025-04-02 | Extended cable entry version | Enhanced cable protection |
| 21000-28-05-35-020-06-02 | Alternative conduit threading | M20 conduit compatible |
| 21000-29-05-35-020-04-02 | Dual probe version | Suitable for redundancy monitoring |
| 21000-28-06-35-020-04-02 | Stainless steel housing variant | Corrosion-resistant, marine use |
| 21000-28-05-35-020-04-01 | Variation with modified grounding configuration | Optimized for specific grounding schemes |
Popular Models from Bently Nevada
| Model | Description | Application |
|---|---|---|
| 330104-00-05-10-02-00 | Proximity Probe with 5m Cable | General industrial monitoring |
| 3500/22M | Transient Data Interface Module | Machinery protection systems |
| 3300 XL 11mm | Proximity Probe Transducer | Shaft vibration monitoring |
| 3500/42M | Vibration Monitor Module | Critical machinery protection |
| 330180-51-00 | Extension Cable for Probes | Cable management for sensor systems |
| 3500/92 | Communication Gateway | Data acquisition and system integration |
