Bently Nevada 21000-16-10-00-120-03-02 Probe Housing

Bently Nevada 21000-16-10-00-120-03-02 Probe Housing Assembly

Product Introduction

The 21000-16-10-00-120-03-02 is a comprehensive proximity probe housing assembly from Bently Nevada. This unit belongs to the 21000 series and accommodates a 3300 XL 8 mm probe with a connector. The housing provides robust mechanical protection and precise positioning for the sensing element. This assembly is suitable for externally mounted vibration and position monitoring applications. Industries such as oil and gas, power generation, and petrochemical processing commonly use this housing for critical machinery protection.

Key Technical Specifications

This housing assembly supports a 3300 XL 8 mm proximity probe. The probe cable length option is 10, which provides 1.0 metre (39 inches) of cable. The probe penetration extends to 120, representing 12 inches of insertion depth into the measurement zone. Additionally, the mounting thread option is 02, which specifies a 3/4-14 NPT thread.

The fitting option is 03, and this includes several key components. You receive one 3/4-14 NPT plug for sealing unused ports. You also get one 3/4-14 to 1/2-14 NPT reducer for adapting to smaller conduit sizes. Furthermore, the package includes one cable seal grip with multiple grommets. These grommets accommodate three cable size ranges: 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches.

The standoff adapter option is 00, meaning this assembly does not include a standoff adapter. The total maximum dimension (C + D) with the visible probe reaches 32.9 inches (83.5 cm). The maximum dimension without visible probe is 17.0 inches (43.18 cm). The typical weight is 1.1 kg (2.4 lb) without fittings.

Material and Construction

The housing body uses aluminum for its lightweight yet durable properties. A 304 stainless steel sleeve lines the interior, providing excellent corrosion resistance and wear protection. This combination offers a good balance between weight reduction and structural integrity. The assembly includes a dome cover that screws securely into the body. Threaded ports allow for standard conduit connections. Multiple O-rings ensure proper sealing against contaminants and moisture. A thread seal prevents leakage at the connection points.

Hazardous Area Approvals

The 21000-16-10-00-120-03-02 housing carries Canadian Standards Association (CSA) approvals. This housing holds an explosion-proof rating for hazardous area installations. Additionally, you can pair this housing with intrinsically safe proximity probes for enhanced safety. Both aluminum (21000) and stainless steel (24701) housings meet CSA Type 4 enclosure requirements. These enclosures provide protection against rain, sleet, snow, and hose-directed water. Importantly, the housing complies fully with the American Petroleum Institute's (API) 670 Standard. This standard governs externally mounted proximity probe housings in the petroleum and chemical industries.

Mechanical Configuration

This housing assembly consists of several key components. The dome cover screws into the main body, providing access to the internal probe. Threaded ports on the housing accommodate standard conduit connections. A probe sleeve of optional length positions the sensing element correctly. The assembly includes O-rings for effective environmental sealing. A reverse mount proximity probe installs securely within the housing. A thread seal prevents gas or liquid migration along the threads. Optional conduit fittings and an optional standoff adapter are available as separate items.

The probe penetration of 12 inches allows deep insertion into the measurement zone. This depth accommodates various machine casing thicknesses and target positions. The 1.0 m cable length provides sufficient reach to the proximitor or junction box. Furthermore, the 3/4-14 NPT mounting thread matches standard industrial conduit fittings.

Installation Guidelines

Proper installation of the 21000-16-10-00-120-03-02 housing ensures reliable operation. First, verify that the mounting surface is clean and free of debris. Next, apply the thread seal to the 3/4-14 NPT threads before installing the housing. This prevents leakage through the threaded connection. Carefully insert the probe assembly to the specified 12-inch penetration depth. Ensure the probe face maintains the correct gap to the target surface.

For conduit connections, select the appropriate grommet based on your cable diameter. The included grommets accommodate cable sizes from 1/8 inch up to 3/8 inch. Install the cable seal grip and tighten it securely to prevent moisture ingress. Additionally, ensure the dome cover seats properly with the O-ring in place. Do not over-torque the cover during installation. After mounting, perform a system verification using a compatible Bently Nevada proximitor.

Packaging List

This shipment includes the following items:

• 1 x Bently Nevada 21000-16-10-00-120-03-02 Probe Housing Assembly

• 1 x Dome cover with O-ring

• 1 x 3/4-14 NPT plug

• 1 x 3/4-14 to 1/2-14 NPT reducer

• 1 x Cable seal grip with three grommets (1/8-3/16", 1/4-5/16", 5/16-3/8")

• 1 x Thread seal compound

• 1 x Installation instruction sheet

Note that the proximity probe itself is pre-installed in this assembly. All fittings come included as specified.

Shipping Information

All orders ship using premier courier services. We dispatch via FedEx, UPS, or DHL, depending on your location and delivery preference. Each shipment carries full insurance and includes a tracking number for your convenience. Please allow 1-2 business days for order processing before dispatch.

Frequently Asked Questions

1. What type of probe does the 21000-16-10-00-120-03-02 housing support?
This housing supports a 3300 XL 8 mm proximity probe with a connector. The probe comes pre-installed in the assembly and includes a 1.0 metre cable length.

2. What approvals does this housing carry?
The 21000 housing holds CSA approval for explosion-proof service in hazardous areas. It also meets CSA Type 4 enclosure requirements and complies with API 670 Standard for externally mounted housings.

3. What is the probe penetration depth for this model?
The probe penetration option is 120, which provides 12 inches of insertion depth from the mounting surface to the probe tip.

4. What conduit fittings come with this assembly?
The fitting option 03 includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip with three different grommet sizes.

5. Can I use this housing in intrinsically safe applications?
Yes, you can pair this 21000 aluminum housing with intrinsically safe proximity probes for use in hazardous areas. The housing itself is CSA approved for such applications.