Product Overview

The Bently Nevada 24701-28-05-00-090-00-02 is a specialized proximity probe housing assembly. This unit contains a 3300 XL 8mm probe with multiple approvals. The 0.5 metre short cable reduces installation complexity. A deep 9 inch probe penetration reaches far into machine cases. The 24701-28-05-00-090-00-02 comes without fittings for custom installations. Engineers select this model for hazardous area applications requiring certified probes.

Technical Specifications

Materials & Construction

The housing body uses 303 stainless steel for superior corrosion resistance. The probe sleeve uses 304 stainless steel for high mechanical strength. A dome cover screws into the top of the housing body. Threaded ports accept customer-supplied conduit fittings. Multiple O-rings create a reliable environmental seal. A thread seal compound prevents leakage at mounting points.

Probe & Cable Details

This assembly contains a 3300 XL 8mm probe with approval option 28. This probe carries multiple agency certifications for global use. The probe cable length is 0.5 metre (20 inches). This short cable minimizes signal degradation. A gold-plated ClickLoc connector sits at the cable end. The model uses no standoff adapter (option -00). The probe penetration (C dimension) is 9 inches (090).

Dimensional Limits

The probe part number and serial number are not visible after installation. The maximum total (C + D) dimension is 13.5 inches (34.3 mm). This compact total length fits machines with limited internal space. The 9 inch penetration extends deep while keeping the housing short. Always check internal clearances before mounting.

Fittings & Mounting

The fittings option (00) means no fittings are included. You receive the housing assembly only. This option suits users with existing conduit parts. You must supply your own 3/4-14 NPT fittings and seals. The cable seal grip is not provided with this version. The mounting thread option (02) is 3/4-14 NPT. This thread is required when no standoff adapter is selected.

Weight & Physical Data

The typical weight is 1.8 kg (4.1 lb) without any fittings. This weight includes the housing, probe, and cable. The stainless steel construction adds durability without excess weight. The dome cover seals securely against dust and moisture. The short 0.5 metre cable reduces bulk for tight conduit runs.

Installation Guide

Follow these steps to install the Bently Nevada 24701-28-05-00-090-00-02 correctly. First, obtain your own 3/4-14 NPT fittings and cable seal grip. Second, clean the mounting hole threads on your machine case. Apply thread sealant to the housing mounting threads.

Third, screw the housing into the machine case by hand. Tighten with a wrench to 29.5 N·m. Fourth, adjust the probe penetration to the 9 inch setting. Use a depth gauge to verify the probe tip position. Set the air gap to 1.27 mm (50 mils) from the shaft surface.

Fifth, tighten the probe sleeve locknut to 39.3 N·m. This locks the probe at the correct depth. Sixth, install your own conduit fittings into the threaded ports. Route the 0.5 metre probe cable through your cable gland. Connect the ClickLoc connector to your extension cable. Finally, screw the dome cover onto the housing. Hand-tighten only.

Package Contents

• One Bently Nevada 24701 housing assembly body

• One dome cover with pre-installed O-rings

• One 3300 XL 8mm probe with approvals (option 28)

• One 0.5 metre probe cable with ClickLoc connector

• One integrated probe sleeve (304 stainless steel)

• One tube of thread seal compound

• Paper installation instruction sheet

Note: No conduit fittings, no NPT plug, no reducer, and no cable seal grip are included with option -00.

Frequently Asked Questions (FAQ)

1. What approvals does the probe option 28 carry for the 24701-28-05-00-090-00-02?
The 3300 XL 8mm probe with option 28 carries multiple agency approvals. These include CSA, ATEX, and IECEx for hazardous locations. Contact Bently Nevada for the full certification list.

2. Why does the 24701-28-05-00-090-00-02 come without fittings?
The fittings option -00 means no fittings are supplied. This allows you to use your own preferred conduit parts. You must purchase 3/4-14 NPT fittings and a cable seal grip separately.

3. Can I see the probe serial number after installing the 24701-28-05-00-090-00-02?
No, the probe part number and serial number are not visible after full installation. Record the probe information before mounting. The maximum visible dimension (C+D) does not expose the label area.

4. What is the maximum total extension of the 24701-28-05-00-090-00-02?
The maximum total (C + D) dimension is 13.5 inches (34.3 mm). This is shorter than standard models due to the probe design. Verify internal machine clearance before ordering.

5. Is the 0.5 metre cable long enough for my installation?
The 0.5 metre (20 inch) cable is best for very short conduit runs. You will need a Bently Nevada extension cable to reach your monitor. The maximum total cable length (probe + extension + field wiring) is 305 metres.