The Bently Nevada 24701 proximity probe housing assembly delivers exceptional durability for challenging industrial conditions. This housing system securely encloses the sensing element while maintaining accurate gap measurements in corrosive atmospheres. Manufactured from 303 stainless steel with a 304 stainless steel sleeve, this model resists chemical attack and moisture ingress. It complies fully with the American Petroleum Institute's API 670 standard for externally mounted housings. Users in chemical processing, offshore platforms, and wastewater treatment facilities particularly value this rugged construction. The full model 24701-16-05-00-073-04-02 arrives completely assembled and factory-tested for immediate deployment.
This housing assembly includes a dome cover, threaded conduit ports, a probe sleeve, O-rings, a reverse mount proximity probe, and a thread seal. The 303 stainless steel body provides superior protection against corrosion compared to aluminum alternatives.
Probe and Cable Details
The unit integrates a 3300 XL 8 mm probe for reliable vibration and position sensing. Cable length measures 0.5 m (20 in) , offering a compact solution for space-constrained installations. With this cable length, the probe serial number and part number remain not visible externally. The maximum (C)+(D) dimension is 13.5 in (34.3 mm) , keeping the overall assembly relatively compact.
Mounting and Fitting Options
This configuration includes no standoff adapter (option 00), making it suitable for direct mounting applications. The probe penetration depth is 7.3 in , accommodating medium-depth installation requirements. Fittings include one 3/4-14 NPT plug only, providing a straightforward connection solution. Mounting threads are 3/4-14 NPT , which must be ordered when the standoff adapter option is not set to 00.
The 24701 housing operates reliably across extreme temperature ranges. CSA certification confirms explosion-proof performance for hazardous locations. Specifically, it carries a T5 rating at -50°C to +40°C and a T4 rating at -50°C to +80°C .
Hazardous Area Approvals
For North American users, the CA24701 version meets Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, plus Class III requirements. The circuit remains non-incendive when connected per drawing 140979. Enclosure Type 4 provides watertight and dust-tight protection. International users outside North America should order the standard 24701 housing without the CA prefix.
Material Advantages
The 303 stainless steel body with a 304 stainless steel sleeve delivers outstanding corrosion resistance. This material choice makes the 24701 housing ideal for coastal installations, chemical plants, and food processing facilities. Typical weight without fittings is 1.8 kg (4.1 lb) , reflecting the robust stainless steel construction.
Proper installation ensures accurate vibration and position measurements over the long term. Follow these steps for best results. First, mount the housing securely to the machine casing using the 3/4-14 NPT threads. Next, connect the probe cable to your monitoring system, ensuring proper routing to avoid sharp bends. Then, adjust the probe penetration to 7.3 in as specified. Secure the single 3/4-14 NPT plug fitting tightly to maintain the explosion-proof seal. Finally, verify the gap voltage before startup to confirm correct probe positioning.
Additionally, always inspect the O-rings for damage during assembly. These seals prevent moisture and debris from entering the housing. Furthermore, ensure the conduit connection is tight to maintain the enclosure rating. Therefore, a careful installation directly extends the service life of the 24701-16-05-00-073-04-02 assembly.
The shipment includes the following items:
One 24701 proximity probe housing assembly with 303 stainless steel body and 304 stainless steel sleeve
One 3300 XL 8 mm reverse mount proximity probe with 0.5 m cable
One 3/4-14 NPT plug fitting
Mounting thread adapter for 3/4-14 NPT connections
Dome cover and threaded conduit ports
Probe sleeve and O-rings
Thread seal compound
All components ship in original factory packaging. The assembly arrives ready for installation without additional modification.
We ship all orders via FedEx, UPS, or DHL with tracking numbers provided. Domestic deliveries typically take 2 to 5 business days. International shipments usually arrive within 5 to 10 business days depending on customs clearance. Every package includes proper cushioning and anti-static protection. Please inspect the box upon arrival and report any damage immediately.
Q1: What makes the 24701 housing different from the 21000 series?
The 24701 housing uses a 303 stainless steel body with a 304 stainless steel sleeve, offering superior corrosion resistance for harsh chemical and marine environments. The 21000 uses aluminum, which is lighter but less resistant to certain corrosives.
Q2: Why does this model have only one fitting (3/4-14 NPT plug)?
This specific configuration 24701-16-05-00-073-04-02 uses a single plug fitting (option 04) for simplified installations where only one conduit entry is needed. Other suffix options offer additional fittings if required.
Q3: Can I use this housing with a standoff adapter if needed?
This model comes without a standoff adapter (option 00). However, the 24701 series supports standoff adapters in other suffix configurations. Please contact us for alternative options.
Q4: What maintenance does the stainless steel housing require?
Regular inspection of O-rings and conduit seals is recommended. The 303 and 304 stainless steel materials resist corrosion, so routine cleaning with mild detergents suffices for most applications.
Q5: Is this assembly compatible with existing Bently Nevada monitoring systems?
Yes, the 24701 housing with 3300 XL 8mm probe is fully compatible with standard Bently Nevada 3500 and 1900 series monitoring systems. Please verify your monitor's input specifications before ordering.
| Brand Name | |
| Model No. | 24701-16-05-00-073-04-02 |
| Product Type | Housing Assembly |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
