The Bently Nevada 32000-16-05-05-080-03-02, also cataloged as the 32000 Proximity Probe Housing Assembly, operates as a dedicated hardware component for protecting and positioning proximity sensors within machinery monitoring systems.

Option Code Breakdown

The structural and mechanical configurations of this metric proximity probe housing assembly are defined by the following suffix options:

• 32000: Base model designation for the Metric Proximity Probe Housing Assembly.
• -16: Integrates a 3300 XL 8 mm proximity probe inside the housing.
• -05: Configures a probe cable length of 0.5 meter (20 inches).
• -05: Sets a standoff adapter length of 0.5 in (13 mm).
• -080: Specifies a probe penetration depth of 80 mm into the machine case.
• -03: Includes two plugs, one M20 conduit fitting, and one cable seal grip with grommets for armored probe cable.
• -02: Selects a 3/4-14 NPT mounting thread option for the housing body.

Mechanical and Electrical Specifications

Eddy-Current Probe Scaling and Rotor Dynamics Integration

The 32000-16-05-05-080-03-02 housing houses an 8 mm probe that utilizes eddy-current probe scaling to convert the physical gap changes between the shaft and the tip into dynamic voltage. For precise rotor dynamics monitoring, field personnel must execute a gap voltage validation.

By adjusting the mechanical penetration depth of the probe within the 32000 housing, engineers can position the sensor to register the standard -10 VDC gap voltage target. This precise calibration aligns the sensor in its linear range, ensuring the accurate collection of radial vibration and axial thrust measurements.

Ordering Info

• 1 x Bently Nevada 32000-16-05-05-080-03-02 Housing Assembly (containing 3300 XL 8 mm probe)
• 1 x M20 conduit fitting
• 2 x Conduit plugs
• 1 x Armored probe cable seal grip with internal grommets

Housing Installation and Calibration Guidelines

• Verifying Thread Engagement and Sealing

  Inspect the 3/4-14 NPT mounting thread before installation. Ensure appropriate thread sealant is used to achieve a fluid-tight seal with the machine casing, and engage a minimum of five full threads to withstand high-vibration environments.

• Penetration Adjustment and Standoff Setup

  Utilize the 0.5 inch standoff adapter to adjust the physical projection of the housing. Carefully slide the probe through the sleeve until the target 80 mm penetration is achieved, taking care not to let the sensor tip collide with the target shaft.

• Conduit and Armored Cable Management

  Feed the armored probe cable through the designated cable seal grip. Ensure the internal rubber grommets are compressed to seal against dirt and water ingress, and route the cable through the M20 fitting to external junction boxes.

Frequently Asked Questions

• How is the target gap voltage validated when using this housing assembly?

  The probe is adjusted within the housing sleeve while checking the Proximitor loop output with a multimeter until the target -10 VDC is reached.

• What is the function of the unthreaded standoff adapter on this housing?

  The standoff adapter provides mechanical clearance and fine control over the physical penetration depth of the sensor tip inside the machine.

• Can this housing be installed on a machine with imperial mounting threads?

  No, this model features a 3/4-14 NPT mounting thread; mating with metric threads requires a dedicated thread adapter to prevent damage.

• Does the housing provide full environmental protection for the probe connection?

  Yes, the sealed housing body and the armored cable seal grip isolate the coaxial connectors from external moisture, oil, and dust.

• How does the 3300 XL 8 mm probe within the housing handle cross-talk suppression?

  The physical housing shields the probe body, but adjacent probes must still maintain the standard separation distance to avoid magnetic interference.

• Is the internal 3300 XL 8 mm probe compatible with older 7200 Series Proximitors?

  No, 3300 XL probes are calibrated to different electrical standards and require 3300 XL series Proximitor sensors to scale measurements properly.

• What occurs if the armored cable seal grip grommets are over-tightened?

  Over-tightening can crush the armored cable jacket, which may pinch the inner coaxial line and alter the high-frequency impedance.

• Can the internal probe be replaced without removing the entire housing from the machine?

  Yes, the design allows the probe sleeve and probe assembly to be withdrawn from the back of the housing without unthreading the main NPT body.