Bently Nevada 21000-16-05-15-034-03-02 Proximity Probe Housing Assembly
Product Introduction
The Bently Nevada 21000-16-05-15-034-03-02 offers a rugged mounting solution for the 3300 XL 8 mm probe. This aluminum housing ensures precise probe alignment in critical machinery monitoring applications. Furthermore, its design includes a 1.5-inch standoff adapter for proper tip clearance. Specifically, this model supports a 3.4-inch probe penetration depth. Additionally, it comes with a 0.5-metre cable for close-coupled installations. The fittings package includes a cable seal grip with three grommet sizes. Therefore, it serves ideal for compressors, pumps, and turbines in explosive atmospheres.
Technical Specifications
The Bently Nevada 21000-16-05-15-034-03-02 works exclusively with the 3300 XL 8 mm probe. This probe delivers reliable proximity measurements for critical asset protection. The cable length measures 0.5 metre (20 inches). This length suits most close-coupled mounting configurations. The probe penetration depth is set at 3.4 inches. This depth provides balanced insertion for standard housing walls. The model includes a 1.5-inch minimum standoff adapter (38 mm). This adapter ensures accurate gap readings from the target surface.
The mounting thread uses a 3/4-14 NPT specification. This thread is required when selecting the standoff adapter option. The fittings package offers comprehensive versatility for this variant. It includes one 3/4-14 NPT plug for sealing unused ports. It also includes one 3/4-14 to 1/2-14 NPT stainless steel reducer. This reducer allows transition to smaller conduit sizes. Additionally, a cable seal grip comes with three interchangeable grommets. These grommets accommodate cable diameters from 1/8 to 3/8 inches. This flexibility simplifies field installations with various cable types.
The maximum combined probe length (C plus D) is 13.5 inches (34.3 cm). The probe part number and serial number appear on a flag label. For probe penetration between 1.0 and 2.0 inches, consider counter-boring the machine case. This step reduces side view or rear view effects on measurement accuracy. The adjustment range for probe penetration is 13 mm (± 0.5 inch). This range provides fine-tuning capability during installation.
Compliance and Certifications
This housing carries CSA explosion-proof certification for hazardous areas. It suits Class 1 Divisions 1 and 2 Groups C and D. These groups cover flammable gases and vapors. It also suits Class 2 Divisions 1 and 2 Groups E, F, and G. These groups address combustible dust environments. The circuit remains non-incendive when connected per drawing 140979. Class III approval covers ignitable fibers and flyings.
The enclosure carries a Type 4 rating for environmental protection. This rating protects against windblown dust, rain, and hose-directed water. Temperature classifications include T5 at -50°C to +40°C. They also include T4 at -50°C to +80°C. Both the 21000 and 24701 housings comply with API 670 standards. This compliance makes them suitable for petroleum applications. This device also complies with part 15 of the FCC Rules. It meets RoHS Directive 2011/65/EU requirements as well.
Housing Material and Construction
The main housing body uses aluminum for lightweight construction. A 304 stainless steel sleeve provides additional wear resistance. The aluminum body offers good thermal conductivity. This material choice reduces overall weight for easier handling. The assembly includes a dome cover that screws into the body. Threaded ports allow convenient conduit connections. The probe sleeve comes in an optional length. O-rings provide reliable environmental sealing. A thread seal ensures leak-proof connections throughout the assembly.
Mechanical and Environmental Ratings
The operating temperature ranges from -50°C to +80°C for T4 rating. It ranges from -50°C to +40°C for T5 rating. These ranges accommodate most industrial environments effectively. The typical weight is 1.1 kg (2.4 lb) without fittings. This lightweight design simplifies overhead or confined installations. The aluminum construction also resists corrosion in many applications.
Installation Guidelines
Installing the Bently Nevada 21000-16-05-15-034-03-02 requires attention to several key factors. First, verify the hazardous area classification matches the certification. Next, clean the mounting surface thoroughly before installation. Remove any burrs, rust, or debris from the mounting hole. Then, thread the 3/4-14 NPT fitting securely in place. Apply appropriate thread sealant if your application requires it.
For the cable seal grip, select the correct grommet size first. Match your cable diameter to one of the three ranges. Install the chosen grommet into the seal grip body. Route the probe cable carefully through the grip assembly. Tighten the nut to compress the grommet around the cable. This step achieves a watertight seal for Type 4 protection.
Use the reducer if you need smaller conduit sizes. Use the plug to seal any unused ports. For probe penetration between 1.0 and 2.0 inches, consider counter-boring. This step reduces side view effects on measurement accuracy. The 13 mm adjustment range allows fine-tuning of probe position.
Shipping and Delivery
All orders ship via FedEx, UPS, or DHL carriers. We select the carrier based on your location and preference. Each unit receives careful packaging to prevent transit damage. We provide tracking numbers within 24 hours of dispatch. International shipments include complete customs documentation. This ensures smooth and timely clearance at destination ports.
Packaging List
1 x Bently Nevada 21000-16-05-15-034-03-02 Probe Housing Assembly
1 x 3300 XL 8 mm probe (installed)
1 x 0.5-metre probe cable (attached)
1 x 1.5-inch minimum standoff adapter
1 x 3/4-14 NPT plug
1 x 3/4-14 to 1/2-14 NPT stainless steel reducer
1 x Cable seal grip with three interchangeable grommets (1/8-3/16", 1/4-5/16", 5/16-3/8")
1 x Dome cover (pre-installed)
1 x Thread seal (fitted)
1 x O-ring set (fitted)
1 x Installation instruction sheet
Frequently Asked Questions
1. What hazardous area approvals does this housing carry?
This housing holds CSA explosion-proof certification for Class 1 Divisions 1 and 2 Groups C and D, Class 2 Divisions 1 and 2 Groups E, F, and G, and Class III. It also carries Type 4 and T5/T4 temperature ratings.
2. How does the 21000 series differ from the 24701 series?
The 21000 series uses an aluminum body with a 304 stainless steel sleeve for lightweight construction. The 24701 series uses a stainless steel body for maximum corrosion resistance. Both meet CSA and API 670 requirements.
3. Which grommet should I choose for my cable installation?
Select the grommet that matches your cable outer diameter. The three options cover 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches. Install the correct grommet and tighten the nut for a watertight seal.
4. What should I do for probe penetration between 1.0 and 2.0 inches?
You may need to counter-bore the machine case for this penetration range. This step reduces side view or rear view effects that could affect measurement accuracy.
5. Is this housing compliant with API 670 standards?
Yes, both the 21000 aluminum housing and the 24701 stainless steel housing comply fully with API 670. This makes them suitable for petroleum, petrochemical, and other critical industrial applications.
