The Bently Nevada 21000-28-10-00-185-04-02 is a fully integrated proximity probe housing assembly. It combines a 3300 XL 8 mm probe with a durable aluminum housing and essential hardware. The housing provides mechanical protection and environmental sealing for the internal probe. This specific configuration includes a 1.0-meter probe cable and no standoff adapter. The 21000 Proximity Probe Housing Assembly is designed for external installation on rotating machinery such as compressors, turbines, and pumps. It supports critical condition monitoring and machine protection systems in demanding industrial environments.
The model number 21000-28-10-00-185-04-02 follows a precise ordering structure. The suffix "28" specifies the probe option as a 3300 XL 8 mm probe with selectable hazardous area approvals. The "10" designates a probe cable length of 1.0 meter (39 inches). Next, the "00" means no standoff adapter is included in this assembly. The "185" indicates the probe penetration dimension (Option D) of 18.5 inches. The "04" fitting option provides one 3/4-14 NPT plug only. Finally, the "02" mounting thread is 3/4-14 NPT, which is mandatory when no standoff adapter is selected. This structured code ensures accurate and error-free ordering.
The housing body is manufactured from aluminum with a 304 stainless steel sleeve. This material combination offers good corrosion resistance and lightweight characteristics. The mounting thread is 3/4-14 NPT, a standard size widely used in industrial applications. The assembly includes a dome cover that screws into the housing body for secure closure. Threaded ports are provided for conduit connections. Additionally, O-rings and a thread seal are pre-installed to ensure a leak-proof installation. The probe sleeve is available in optional lengths. However, this specific model does not include a standoff adapter.
This assembly comes with a basic but essential fitting set. It includes one 3/4-14 NPT plug to seal the unused conduit port. Unlike other configurations, this model does not include a reducer or cable seal grip. Therefore, you may need to purchase additional fittings separately. For example, if you require a cable seal or a reducer for different conduit sizes, you must order them independently. The 21000-28-10-00-185-04-02 offers a streamlined solution for applications with minimal fitting requirements.
The probe penetration length is determined by Option D, as the standoff adapter (Option C) is not present. For this model, the probe penetration is 18.5 inches. The visible probe cable length is limited. Specifically, the maximum (C+D) with visible probe P/N and S/N is 17.0 inches (43.18 cm). The total maximum (C+D) dimension reaches 32.9 inches (83.5 cm). Because the penetration exceeds 300 mm (12 inches), sleeve support near the probe is necessary to prevent resonance. This is a critical installation consideration. The adjustment range for Option D remains 13 mm (± 0.5 in), allowing fine-tuning during setup.
The 21000 Proximity Probe Housing Assembly meets rigorous industry standards. It complies with the RoHS Directive 2011/65/EU, confirming it is free from hazardous substances. Furthermore, the housing is certified by the Canadian Standards Association (CSA). It is rated for explosion-proof applications in hazardous areas. Specifically, it is certified for Class I Divisions 1 and 2 Groups C and D. It also covers Class II Divisions 1 and 2 Groups E, F, and G, plus Class III. The circuit is non-incendive when connected per drawing 140979. The enclosure is Type 4 rated for water and dust ingress protection. Temperature classifications are T5 at Ta = -50°C to +40°C and T4 at Ta = -50°C to +80°C. Note that CSA-approved housings are only available for North American end users. For all other countries, standard housings must be ordered.
Installing the Bently Nevada 21000-28-10-00-185-04-02 requires careful preparation. First, select a suitable mounting location on the machine casing. Ensure the surface is clean and flat. Then, prepare the mounting hole with the required 3/4-14 NPT thread. Apply the provided thread seal to the housing threads. Thread the housing into the mounting hole until secure. Next, install the 3/4-14 NPT plug into the unused port. Connect the probe cable to the extension cable using the Miniature ClickLoc connector. Because the probe penetration is 18.5 inches, install a sleeve support near the probe tip to prevent resonance. Finally, adjust the probe penetration within the 13 mm (± 0.5 in) range to achieve the correct gap. Proper installation ensures accurate vibration measurements and reliable machine protection.
Your order for the Bently Nevada 21000-28-10-00-185-04-02 will include:
One (1) 21000 proximity probe housing assembly (aluminum body with 304 SST sleeve)
One (1) 3300 XL 8mm reverse mount probe with 1.0m cable (pre-installed)
One (1) 3/4-14 NPT plug
Pre-installed O-rings and thread seal
Protective packaging for safe transportation
We ship all orders using reliable international carriers. The shipping methods are FedEx, UPS, and DHL. We select the fastest and most secure option based on your destination. Delivery typically takes 3 to 7 business days. A tracking number will be provided upon shipment.
1. What does the "28" probe option indicate on the Bently Nevada 21000-28-10-00-185-04-02?
The "28" specifies a 3300 XL 8mm probe with selectable hazardous area approvals. This means the probe itself is certified for use in potentially explosive atmospheres.
2. Why is there no standoff adapter in this model?
The "00" in the standoff adapter position means no adapter is included. This is suitable for applications where the housing mounts directly to the machine without additional spacing.
3. Is the Bently Nevada 21000-28-10-00-185-04-02 suitable for Class I Division 1 areas?
Yes, the CSA certification covers Class I Divisions 1 and 2 Groups C and D. This makes it suitable for use in hazardous locations with flammable gases.
4. What is the maximum probe penetration dimension for this assembly?
The maximum (C+D) dimension is 32.9 inches (83.5 cm). The probe penetration (Option D) is 18.5 inches. A sleeve support is required to prevent resonance at this length.
5. Can I use this housing assembly with a different fitting configuration?
This specific model only includes one 3/4-14 NPT plug. If you need additional fittings like a reducer or cable seal grip, you will need to order them separately. The 21000-28-10-00-185-04-02 is a basic configuration.
| Brand Name | |
| Model No. | 21000-28-10-00-185-04-02 |
| Product Type | Proximity Probe Housing Assemblies |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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