The Bently Nevada 31000-16-05-30-050-02-02, also cataloged as the 31000 Proximity Probe Housing, operates as a dedicated hardware component for mechanical encapsulation and positioning of proximity transducers within Machinery Protection Systems. This explosion-proof, externally adjustable housing assembly provides direct physical protection and external insertion depth control for an internal eddy-current proximity probe, allowing external modification of the sensor gap relative to the monitored shaft face without breaching the machine casing boundary.

Suffix Nomenclature Matrix

• 31000: Base Model (Explosion-Proof Proximity Probe Housing Assembly)

• -16: Probe Thread Option (M10 x 1 internal sleeve threads)

• -05: Housing Thread Option (3/4-14 NPT process entry)

• -30: Material Option (303 stainless steel housing body configuration)

• -050: Overall Travel Length Option (5.0 in nominal mechanical adjustment range)

• -02: Explosion-Proof Certification Option (North American and international hazardous area approvals)

• -02: Face Seal / O-Ring Option (Fluorocarbon elastomer O-ring seals)

Technical Specification Parameters

Eddy-Current Probe Scaling and Rotor Dynamics Stability

The rigid 303 stainless steel sleeve design maintains concentric alignment of the internal transducer shaft, verifying that manual external position changes preserve the calibrated eddy-current probe scaling vector. Isolating the probe extension cable junction inside a sealed housing chamber prevents common-mode noise corruption, thereby stabilizing the dc gap voltage validation loops at the target -10 VDC operational center. The heavy-walled construction resists machine case vibration harmonics, preventing high-frequency mechanical deformation from injecting false signals into the active tracking of rotor dynamics or breaking the cross-talk suppression paths between adjacent XY channels.

Structural Circuit Diagnostics

Q: Can the internal proximity sensor be extracted or replaced while the monitor rack remains fully energized?

A: Yes. Extracting the internal sensor capsule through the housing sleeve while the monitor rack is live causes no electrical damage. However, pulling the probe away from the target surface shifts the loop output to maximum negative saturation, meaning active machine trip interlocks must be bypassed prior to extraction.

Q: How does a fluid leak past the internal O-ring seal affect the transducer signal?

A: Failure of the fluorocarbon O-ring allows high-pressure machine oil or process gas to enter the housing sleeve. Liquid ingress into the unsealed coaxial terminal space changes the transmission loop capacitance, invalidating the calibrated probe scaling and creating drift in the static gap voltage validation.

Q: Does the mechanical locking collar of the housing allow hot-swap adjustment under machine vibration?

A: Adjustment during machine operation is physically possible due to the continuous thread sleeve. However, to prevent unintended target impact due to axial shaft shifts during active rotor dynamics, adjustments must be monitored continuously via a digital voltmeter connected to the Proximitor loop terminal.

Mechanical Alignment Guidelines

• NPT Process Engagement: Coat the 3/4-14 NPT external mounting threads with a conductive industrial anti-seize compound. Thread the assembly into the machine case tapping, verifying a minimum of 5 full threads of engagement to maintain explosion-proof seal parameters.

• Sleeve Compression Torque: Once the target gap voltage is verified at -10 VDC on the active Proximitor circuit, tighten the external compression locking nut to a terminal value of 34 N-m to lock the sleeve position against machine operational forces.

• Conduit Moisture Sealing: Attach flexible or rigid explosion-proof conduit components directly to the housing adapter port. Ensure the conduit drainage paths slope away from the housing entry to prevent condensation accumulation near the internal coaxial terminal.

Component Order Inventory

• 1 x Bently Nevada 31000-16-05-30-050-02-02 Stainless Steel Housing

• 1 x Internal Compression Sleeve Insert (M10 x 1 Threaded)

• 2 x Viton Replacement Body O-Rings

Logistics Despatch Management

Delivery time: 2-7 days when payment finish parameters are updated in the commercial processing module. Freight dispatches deploy directly from the central storage hub in Xiamen, China via express international logistics networks including DHL, FEDEX, or UPS. The mechanical parts travel inside double-walled corrugated shipping cartons containing custom-fit shock-absorbing poly-foam inserts to protect the machined threads and sealing faces from physical distortion during transport, arriving in anti-static industrial packaging.