The 21000-16-10-00-046-04-02 is a rugged, all-metal aluminum proximity probe housing assembly featuring an integrated 3300 XL 8mm probe with a 1.0-meter cable length and a 4.6-inch penetration sleeve depth. Fully compliant with API 670 standards, this unit works seamlessly with explosion-proof and intrinsically safe industrial instrumentation to deliver flexible external probe mounting and stable machinery protection in hazardous environments without leaving delicate sensor wiring exposed.

Features and benefits

• Durable Aluminum Construction – Ensures long-term corrosion resistance and robust performance.

• CSA-Certified – Suitable for hazardous areas, meeting strict safety standards.

• Explosion-Proof Design – Provides reliable protection in industrial environments.

• API 670 Compliant – Meets standards for externally mounted proximity probe housings.

• Customizable Sleeve Length – Adapts to various installation requirements.

• Optional Accessories – Supports standoffs, conduit fittings, and probe extensions for flexible setups.

Specific Application

• External proximity probe mounting and physical protection on industrial rotating machinery (e.g., centrifugal compressors, pumps, or turbines) in hazardous areas
• Deep-bore installations requiring a 4.6-inch stainless steel penetration sleeve to safely route the probe tip to internal shaft target faces.
• Applications requiring robust, weather-tight external sensor deployment compliant with API 670 guidelines for explosion-proof installations.

System Compatibility, Alternative Models, and Differences

• System Compatibility:
  Fully compatible with Bently Nevada 3300 XL 8mm proximity transducer loops and Proximitor sensors via its pre-installed 3300 XL 8mm probe. The housing interfaces directly with standard industrial conduit networks using the provided 3/4-14 NPT thread connection.
• Alternative Model (Stainless Steel Enclosure Variant):
  24701-16-10-00-046-04-02 (303 Stainless Steel Probe Housing Assembly)
• Key Differences between 21000 (Aluminum) and 24701 (Stainless Steel):

Main Body Material: The 21000 model utilizes a lightweight cast aluminum body, whereas the 24701 version is manufactured entirely from heavy-duty 303 stainless steel.

Mechanical Hardware Weight: The 21000 assembly has a typical baseline mass of 1.1 kg (2.4 lb), while the tougher 24701 stainless steel housing weighs approximately 1.8 kg (4.1 lb).

Corrosion Resistance: The 24701 model provides significantly better chemical and saltwater protection in offshore or highly corrosive chemical atmospheres than the aluminum 21000 casing.

Ordering Information

• FAQ
• Q1: What materials are used in the 21000-16-10-00-046-04-02 housing?
  A1: It is made from durable aluminum, providing strong mechanical protection for proximity probes.
• Q2: Is the 21000 housing CSA approved?
  A2: Yes, it is CSA certified and rated as a Type 4 explosion-proof enclosure for hazardous areas.
• Q3: Can this housing accommodate long probe sleeves?
  A3: Yes, sleeves over 304 mm require additional support, which can be provided with optional accessories.
• Q4: Are conduit connections supported on this housing?
  A4: Yes, threaded ports allow easy conduit attachment for wiring and installation.
• Q5: Is it compatible with standard Bently Nevada proximity probes?
  A5: Yes, it supports various probes, including intrinsically safe models, and meets API 670 standards.
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• Accessories

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• Individual Probe Sleeve for 21000/24701 Proximity Probe Housings
• 44382-AAA

• The individual probe sleeve length does not include the distance from the end of the sleeve to the probe tip or the gap from the probe tip to the target material. If only the part number of the original housing is known, and the sleeve cannot be measured, use the following table to determine the sleeve length: