Bently Nevada 24701-28-05-00-070-04-01 Proximity Probe Housing Assembly

The Bently Nevada 24701-28-05-00-070-04-01 is a proximity probe housing assembly. This unit belongs to the 24701 series from Bently Nevada. Specifically, the 24701 model includes a 3300 XL 8mm probe with approval options. Engineers use this assembly for shaft vibration and position monitoring. The assembly comes new and original in factory packing. A 12-month factory warranty covers this product.

Model and Suffix Code Breakdown

How do you interpret the full model number? The base model 24701 indicates Proximity Probe Housing Assemblies. The suffix 28 specifies a 3300 XL 8mm probe with approval option. Next, 05 represents a probe cable length of 20 inches (0.5 meters). The 00 means no standoff adapter is included. Following that, 070 indicates a probe penetration of 0.7 inches. The 04 fitting option provides one 3/4-14 NPT plug only. Finally, 01 specifies mounting thread as cast without threads.

Material Construction and Durability

Speaking of materials, the body uses 303 stainless steel for corrosion resistance. The sleeve consists of 304 stainless steel for additional protection. Both materials withstand harsh industrial environments effectively. Therefore, this assembly suits continuous operation in demanding conditions. The stainless steel construction prevents rust and chemical damage.

Physical Weight and Dimensions

The typical weight reaches 1.8 kg (4.1 lb) without any fittings attached. The maximum (C) + (D) dimension measures 13.5 inches (34.3 mm). Notably, the probe P/N and S/N are not visible on this assembly. The probe cable length stands at 0.5 meters for flexible installation. These compact dimensions fit standard machinery mounting requirements.

Complete Assembly Components

What does the Bently Nevada 24701 housing assembly include? First, a dome cover screws into the body of the housing securely. Second, threaded ports allow conduit connections for wiring protection. Third, a probe sleeve comes in the specified optional length. Fourth, O-rings provide sealing against moisture and contaminants. Fifth, a reverse mount proximity probe performs the actual measurement. Sixth, a thread seal prevents leakage through the connections. Seventh, optional conduit fittings may be ordered separately. Eighth, an optional standoff adapter can extend the probe reach.

Probe Specifications and Compatibility

The 24701-28-05-00-070-04-01 uses a 3300 XL 8mm proximity probe. This probe type is standard for Bently Nevada monitoring systems. The reverse mount design suits tight installation spaces. Consequently, this assembly works with most Bently Nevada monitors. Always verify compatibility with your existing rack system.

Installation Considerations

For proper installation, follow the maximum (C) + (D) dimension of 34.3 mm. This dimension limits how far the probe extends from the housing. The 3/4-14 NPT plug allows conduit attachment for cable protection. The as-cast mounting thread option provides flexibility for various mounts. Therefore, you may need adapter fittings for some mounting surfaces.

Step-by-Step Installation Guide

Follow these steps to install your Bently Nevada 24701-28-05-00-070-04-01 correctly.

Step 1: Inspect All Components
First, remove the assembly from its factory packaging carefully. Check that the dome cover screws into the body smoothly. Verify all O-rings are present and undamaged. Also, inspect the probe sleeve for any visible defects.

Step 2: Prepare the Mounting Surface
Next, clean the mounting surface on your machinery thoroughly. Ensure the mounting hole matches the as-cast thread specification. Remove any burrs or debris from the threads. A clean surface prevents binding during installation.

Step 3: Install the Probe Assembly
Then, insert the Bently Nevada 24701 into the mounting hole. Turn the assembly clockwise to engage the threads by hand. Do not use tools until the threads start correctly. Tighten to the specified torque value for your application.

Step 4: Attach Conduit Fittings
After mounting, connect the 3/4-14 NPT plug to your conduit system. Use thread sealant on all conduit connections for leak prevention. Run the probe cable through the conduit safely. Protect the cable from sharp edges during pulling.

Step 5: Set the Probe Gap
Now, connect the probe to your Bently Nevada monitor. Adjust the probe penetration to 0.7 inches as specified. Use a gap voltage reading to verify proper positioning. The reverse mount design may require special tools for adjustment.

Step 6: Secure and Test
Finally, tighten the dome cover onto the housing body firmly. Power up your monitoring system and observe the signal. Verify the probe responds to shaft movement correctly. Record the initial gap voltage for future reference.

Complete Package Contents

Your Bently Nevada 24701-28-05-00-070-04-01 shipment includes the following items:

• 24701 Proximity Probe Housing Assembly (1 unit)

• Dome cover with O-ring installed

• 3300 XL 8mm reverse mount proximity probe

• Thread seal for connection sealing

• Factory packing and installation instructions

Note: Shipping partners include FedEx, UPS, and DHL.

Frequently Asked Questions (FAQ)

Q1: What machines use the Bently Nevada 24701 probe assembly?
The Bently Nevada 24701 monitors shaft vibration on turbines and compressors. It also works on pumps, generators, and fans. Any rotating machinery with proximity probe monitoring can use this assembly.

Q2: What is the probe cable length on this model?
The 24701-28-05-00-070-04-01 includes a 0.5 meter (20 inch) probe cable. This short length suits installations where the monitor sits close to the machine. For longer distances, select a different cable length suffix code.

Q3: Can I use this assembly without the 3/4-14 NPT plug?
The 04 fitting option includes one 3/4-14 NPT plug only. You may remove this plug if not needed for your installation. However, keep the plug for future conduit connections if required.

Q4: What is the probe penetration depth on this model?
The 070 suffix specifies a probe penetration of 0.7 inches. This depth measures how far the probe extends from the housing. Different penetration options are available with other suffix codes.

Q5: Does this assembly include a standoff adapter?
No, the 00 suffix means no standoff adapter is included. Order a separate standoff adapter if your installation requires one. The adapter extends the probe reach for deeper mounting holes.