The 24701-28-05-65-105-03-02 is a rugged, all-metal 303 stainless steel proximity probe housing assembly featuring an integrated 3300 XL 8mm probe with a 0.5-meter cable, a 6.5-inch standoff adapter, and a 10.5-inch penetration sleeve. Fully compliant with API 670 standards, this heavy-duty unit works seamlessly with industrial machinery protection systems to deliver robust environmental containment, direct internal wiring, and stable vibration tracking under severe industrial operational conditions.

Features and benefits

Made of stainless steel for durable and corrosion-resistant performance

• CSA-certified and explosion-proof for safe use in hazardous areas

• Complies with API 670 standards for externally mounted proximity probes

• Includes threaded ports, dome cover, O-rings, and optional standoff adapter

• Supports customizable sleeve lengths with optional sleeve support for long installations

• Compatible with intrinsically safe proximity probes for versatile industrial applications

Specific Application

• External proximity probe mounting and high-accuracy vibration tracking on large rotating machinery (e.g., steam turbines, multi-stage boiler feed pumps, and high-pressure compressors).
• Extreme deep-bore bearing installations requiring a 10.5-inch penetration sleeve coupled with a 6.5-inch standoff adapter to reach internal target areas through thick insulation layers.
• Corrosive field mounting environments exposed to heavy weather, offshore saltwater mist, or active process fluids requiring premium 303 stainless steel physical protection.

System Compatibility, Alternative Models, and Differences

• System Compatibility:

Fully compatible with standard Bently Nevada 3300 XL 8mm proximity transducer loops and Proximitor sensors via its pre-installed 3300 XL 8mm probe. The assembly links directly with industrial plant infrastructure via its standard 3/4-14 NPT mounting threads.

• Alternative Model (Aluminum Casing Variant):

21000-28-05-65-105-03-02 (Aluminum Proximity Probe Housing Assembly)

• Key Differences between 24701 (Stainless Steel) and 21000 (Aluminum):

Casing Material Base: The 24701 uses cast 303 stainless steel for the housing main body, whereas the 21000 configuration is built from cast aluminum.

Assembly Weight Profile: The 24701 has a typical baseline mass of 1.8 kg (4.1 lb), making it considerably heavier than the 21000 aluminum version which averages 1.1 kg (2.4 lb).

Atmospheric Resilience: The 303 stainless steel 24701 enclosure provides significantly better long-term resistance to chemical washing, sulfur gases, and coastal salt environments compared to the aluminum housing.

Ordering Information

FAQ

Q1: What is the 24701-28-05-65-105-03-02 used for?
A1: It is a stainless steel proximity probe housing assembly for securely mounting proximity probes externally.

Q2: Is the 24701-28-05-65-103-02 explosion-proof?
A2: Yes, it is CSA-certified and rated explosion-proof for hazardous areas.

Q3: Does the 24701-28-05-65-105-03-02 comply with industry standards?
A3: Yes, it meets API 670 standards for externally mounted proximity probe housings.

Q4: Can it support long probe sleeves?
A4: Yes, optional sleeve supports are available for sleeves longer than 304 mm (12 inches).

Q5: Is it compatible with intrinsically safe proximity probes?
A5: Yes, it can be used with hazardous-area approved, intrinsically safe probes.

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: