Configured for mechanical transducer support in 3300 and 3500 Machinery Protection Systems, the Bently Nevada 31000-30-05-40-014-03-02 (31000 Proximity Probe Housing) provides direct physical/mechanical execution. This assembly serves as the primary mounting interface for eddy-current probes, ensuring the probe tip maintains a fixed distance relative to the monitored rotor surface. The housing is engineered to isolate the transducer from casing vibrations and environmental contaminants, maintaining the mechanical stability required for accurate gap voltage monitoring.

Model Suffix Breakdown

• 31000: Probe Housing assembly

• -30: Mounting thread and pipe size configuration

• -05: Material composition and surface finish

• -40: Standard configuration option

• -014: Probe insertion depth (inches)

• -03: Fitting and connection configuration

• -02: Hardware and accessory kit

Hardware Specifications

Mechanical Monitoring & Sensor Stability

Effective rotor dynamics monitoring depends on the rigid installation provided by the 31000 series housing. To ensure valid eddy-current probe scaling, the housing must be installed to eliminate mechanical resonance. Precise gap voltage validation (targeting -10 VDC) is reliant on the housing maintaining a consistent position under thermal cycling. Installers must prioritize cross-talk suppression by ensuring that the housing assembly does not introduce stress-induced noise into the proximity probe signal, maintaining the electrical baseline required for accurate vibration and axial position measurement.

## Ordering info

• One (1) 31000-30-05-40-014-03-02 Housing assembly

• Mounting locknuts and washers

• Thread sealing components

• Installation instruction manual and alignment reference guide

Installation Guidelines

• Surface Preparation: Ensure the mounting surface on the machine casing is flat to prevent housing tilt or misalignment.

• Torque Application: Apply factory-recommended torque to all locknuts to prevent loosening due to high-frequency machine vibrations.

• Grounding Compliance: Verify electrical continuity between the housing and the machine frame to ensure proper electromagnetic shielding of the probe assembly.

• Thread Engagement: Ensure at least five (5) threads are engaged to maintain structural integrity and prevent leakage in pressurized casings.

Delivery Information

• Delivery time: 2-7 days when payment finish.

• Dispatched via DHL/FEDEX/UPS.

• Securely packed in anti-static industrial packaging to prevent impact damage during transit.

Frequently Asked Questions

• Can the housing be used in high-pressure environments?

  Yes, provided the NPT threads are properly sealed with compatible thread sealant to prevent process fluid leakage.

• How does housing looseness affect vibration readings?

  A loose housing allows mechanical motion to reach the probe tip, creating false vibration data that does not represent actual rotor behavior.

• Is the housing compatible with all Bently Nevada probes?

  The housing bore is designed for specific probe diameters; ensure your probe model matches the housing specification before installation.

• What is the material compatibility of the housing?

  The housing is constructed from corrosion-resistant alloy, compatible with standard industrial lubricating oils and hydraulic fluids.

• How is the probe gap adjusted within this housing?

  The probe is positioned by adjusting the thread engagement within the housing and locking it in place with the provided nuts once the target gap is met.

• Does the housing require periodic maintenance?

  Inspect the assembly during major machine outages to confirm that vibrations have not loosened the mounting nuts or compromised the thread seal.

• How can I prevent electrical interference?

  Ensure the housing maintains a low-impedance electrical path to the machine ground, which helps protect the probe cable from external noise.

• Can this housing be used for vertical mounting?

  Yes, the 31000 series is designed for universal orientation, provided the insertion depth is calculated to account for the specific rotor geometry.