The 24701-28-10-00-040-03-02 from Bently Nevada offers a robust stainless steel solution for externally mounted proximity probe applications. Specifically, this assembly incorporates a reverse-mount 3300 XL 8 mm probe with selectable hazardous area approvals, a 4-inch penetration depth, and a 1.0-meter cable. Furthermore, the absence of a standoff adapter simplifies installation where clearance constraints exist. Additionally, the 303 stainless steel body provides exceptional durability and corrosion resistance, making this housing ideal for harsh industrial environments. This listing offers a brand new unit in original factory packaging, and we back it with a full 12-month warranty.
The 24701 series uses a systematic suffix code structure, and this particular unit (24701-28-10-00-040-03-02) breaks down as follows:
| Suffix Position | Code | Description |
|---|---|---|
| Probe Option | 28 | 3300 XL 8 mm probe with selectable hazardous area approvals |
| Cable Length | 10 | 1.0 m (39 inches) |
| Standoff Adapter | 00 | No standoff adapter |
| Probe Penetration | 040 | 4.0 inches (101.6 mm) |
| Fitting Option | 03 | NPT plug, reducer, and cable seal grip with 3 grommets |
| Mounting Thread | 02 | 3/4-14 NPT |
Probe Option (Suffix 28): This assembly includes a 3300 XL 8 mm probe that features selectable hazardous area approvals. This probe delivers exceptional linear range and stability, making it a preferred choice for critical machinery protection systems worldwide.
Probe Cable Length (Suffix 10): The unit comes with a 1.0 m (39 inches) integral cable. This longer length proves advantageous for installations where the connection point sits further away, providing greater flexibility in routing and junction box placement.
Standoff Adapter (Suffix 00): This configuration omits the standoff adapter entirely. Therefore, the probe mounts directly, which works ideally when space constraints exist or when the required probe penetration does not need an adapter.
Probe Penetration (Suffix D=040): The probe penetration length stands at 4.0 inches. Meanwhile, the adjustment range for option D spans ±0.5 inches (13 mm), providing necessary flexibility for precise positioning during installation.
Fittings (Suffix 03): Included fittings consist of one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip. Moreover, the seal grip comes with three interchangeable grommets that accommodate cable diameters from 1/8 inch up to 3/8 inch.
Mounting Thread (Suffix 02): The housing features a standard 3/4-14 NPT mounting thread. This thread size enjoys wide adoption across industrial applications, ensuring compatibility with most existing mounting holes and adapters.
The 24701 housing body uses 303 stainless steel, offering superior corrosion resistance compared to aluminum alternatives. Simultaneously, the probe sleeve utilizes 304 stainless steel, providing excellent durability and mechanical strength. This all-stainless construction makes the 24701 series particularly suitable for offshore, marine, and chemical processing environments where corrosion poses a significant concern.
Enclosure Rating: CSA Type 4, providing protection against water ingress and dust
Hazardous Area Approvals: Class I Divisions 1 and 2 Groups C and D; Class II Divisions 1 and 2 Groups E, F, and G; Class III
Temperature Ratings: T5 at Ta = -50°C to +40°C; T4 at Ta = -50°C to +80°C
Weight: Approximately 1.8 kg (4.1 lb) without fittings
Circuit Classification: The circuit operates as non-incendive when you connect it per drawing 140979
Properly mounting the 24701-28-10-00-040-03-02 ensures accurate vibration and position measurements. First, confirm that the mounting surface is clean and prepare the 3/4-14 NPT thread with sealant. Next, carefully insert the assembly while avoiding any contact between the probe tip and the target surface, as contact could damage the probe.
For this particular model, the probe penetration length measures 4.0 inches, which falls well within the standard range. However, remember that the maximum C plus D dimension for a 1.0 m cable reaches 29.2 inches. Since this configuration remains far below that threshold, you do not need additional sleeve support. Additionally, the probe P/N and S/N will not appear on a flag label for this cable length, so verify these details on the probe body before installation.
The 24701 series complies with the European Community RoHS Directive 2011/65/EU, ensuring it meets global environmental standards. Furthermore, the housing carries CSA certification for explosion-proof applications across North America. Importantly, it fully satisfies the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings. CA24701 housings specifically serve North American end users, while standard 24701 housings serve all other regions.
Each new 24701-28-10-00-040-03-02 order includes the following components in original factory packaging:
One complete housing assembly with 303 stainless steel body and 304 stainless steel sleeve
One 3300 XL 8 mm reverse-mount proximity probe with selectable hazardous area approvals
One 1.0 m integral probe cable
One 3/4-14 NPT plug
One 3/4-14 to 1/2-14 NPT reducer
One cable seal grip with three grommets (1/8 to 3/16 inches, 1/4 to 5/16 inches, 5/16 to 3/8 inches)
One dome cover
Thread seal compound
O-rings
We dispatch all orders through trusted global carriers, including FedEx, UPS, and DHL. We carefully pack each 24701 housing assembly to prevent damage during transit. You will receive tracking details as soon as your order ships.
Q1: What is the primary difference between the 21000 and 24701 series housings?
The main difference lies in the body material. The 24701 series uses 303 stainless steel, while the 21000 series uses aluminum. Therefore, the 24701-28-10-00-040-03-02 offers superior corrosion resistance and suits harsh environments such as offshore platforms and chemical plants.
Q2: Does this housing include hazardous area approvals?
Yes, suffix 28 indicates that the probe includes selectable hazardous area approvals. The 24701-28-10-00-040-03-02 carries CSA certification for Class I Divisions 1 and 2 Groups C and D, as well as Class II and Class III locations.
Q3: Can I use this housing internationally outside North America?
Absolutely. The standard 24701 housing (without the CA prefix) serves users worldwide. Only the CA24701 variant carries restrictions for North American end users. Therefore, this 24701-28-10-00-040-03-02 fits installations globally.
Q4: How do I adjust the probe penetration during installation?
The probe penetration option D offers an adjustment range of ±0.5 inches (13 mm). You can fine-tune this by rotating the housing or adjusting the mounting position. Always perform adjustments with the machine stopped and follow Bently Nevada's recommended procedures to maintain measurement accuracy.
Q5: Does this assembly require additional sleeve support?
For the 24701-28-10-00-040-03-02, the total C plus D dimension stands at 4.0 inches, well below the 12-inch threshold. Consequently, you do not need additional sleeve support. However, always verify your specific installation conditions to ensure optimal performance.
| Brand Name | |
| Model No. | 24701-28-10-00-040-03-02 |
| Product Type | Probe Housing Assemblies |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
