Product Overview

The Bently Nevada 21000-34-10-00-096-04-02 Proximity Probe Housing establishes an impenetrable, explosion-proof shield for high-precision eddy current displacement sensors. Engineered for critical rotating machinery monitoring setups, this robust enclosure system safeguards delicate proximity probes deployed on high-capacity steam turbines, centrifugal compressors, and massive industrial pumps. This specific extended standoff configuration bridges wide physical clearance gaps, easily passing through thick thermal insulation blankets. By maintaining absolute structural rigidity, it isolates the internal transducer from high-pressure oil mist, aggressive chemical vapors, and mechanical impacts. The hardware interfaces flawlessly with Bently Nevada 3500 monitoring racks and plant-wide Distributed Control Systems (DCS), ensuring the transmission of clean, noise-free shaft vibration and axial position data to emergency shutdown systems (ESD) to prevent catastrophic machine failures.

Part Number Option Code Breakdown

21000 - Product Line Nomenclature

Designates the standard explosion-proof/flame-proof aluminum proximity probe housing series certified for volatile or hazardous process environments.

34 - Conduit Entry Modification

Specifies a specialized dual conduit port configuration featuring M20x1.5 metric threads to satisfy regional international electrical integration codes.

10 - Probe Sleeve Thread Profile

Machined with a standard 3/8-24 UNF internal thread specification to accept matching standard proximity probe bodies.

00 - Structural Flange Option

Selects a completely flat housing mounting face variation without additional counterbore machining or non-standard step flanges.

096 - Standoff Length Rating

Defines a precise 9.6-inch total external standoff distance to lift the main terminal junction head completely clear of thick machine casing skins.

04 - Probe Penetration Variable

Provides a maximum of 4.0 inches of internal linear sleeve travel for precise field depth adjustments relative to the shaft target area.

02 - Field Connection Hardware

Supplies standard external explosion-proof field wiring adapters for immediate on-site conduit mating and sealing.

Mechanical and Performance Specifications

On-Site Engineering Field Manual

Mechanical Alignment Rigidity

Mount the housing assembly only to completely rigid casing surfaces. Due to the 9.6-inch extended standoff profile, ensure the mounting boss exhibits zero mechanical flexing to prevent structural resonance from creating artificial low-frequency signal distortion.

Dynamic Gap Voltage Calibration

Connect the internal proximity probe to a live Proximitor module during final depth setup. Rotate the internal sleeve slowly until a digital multimeter measures exactly -10.0 VDC across the signal line, locking the probe precisely in the center of the 3300 XL linear range.

Explosion-Proof Junction Routing

Apply high-performance industrial thread compound to the M20x1.5 metric conduit interfaces. Maintain a generous bend radius for the internal coaxial cable inside the terminal cavity to protect the delicate shielding layer from micro-fractures and signal leakage.

Harsh Condition Endurance Profile

Immunity to Severe Atmospheric Degradation

The low-copper aluminum casting incorporates an advanced anti-corrosion finish that easily resists continuous exposure to sour gas ($H_2S$), high ambient humidity, and coastal saltwater mist. This heavy-duty defense preserves critical internal electrical signals in high-stress offshore and petrochemical environments.

Uncompromised TSI Control Loops

By providing a rock-solid, vibration-damping mounting platform, this housing ensures that weak eddy current fields operate without external physical disturbance. Clean, stable orbit and displacement data feed flawlessly into Turbine Supervisory Instrumentation (TSI) racks and host systems like Honeywell Experion PKS control nodes.

Ordering info

(1) Premium Bently Nevada 21000-34-10-00-096-04-02 Extended Housing Assembly

(2) Heavy-Duty Threaded Aluminum End Cap with Sealing O-Ring

(3) Internal 4.0-Inch Adjustable Sleeve and Mechanical Locking Collar Kit

(4) Certified Hazardous Area Metric M20 Field Fitting Adapters

Express Freight and Logistics Standards

Your critical machinery hardware dispatches within 2-7 days when payment finish verification is finalized. We ship all worldwide orders via premium air-express courier networks including DHL, FEDEX, and UPS to guarantee rapid transit and complete tracking transparency. Logistical technicians seal each housing assembly inside heavy-duty anti-static industrial packaging and embed the product within custom-contoured, high-density shock-absorbing foam layers to completely insulate the mechanical components from transit shock forces.

Field Support Technical Validation

Q1: What unique function does the "34" suffix code indicate?

A1: The "34" suffix designates M20x1.5 metric threaded conduit entries rather than the standard NPT threads, allowing direct compliance with European and international hazardous area wiring standards.

Q2: Is the proximity probe included inside this housing kit?

A2: No. This part number covers only the certified mechanical housing, adjustable sleeve, and internal locking hardware. You must source the 3300 XL proximity probe and extension cables separately.

Q3: Why does this model utilize a 096 length suffix?

A3: The 096 suffix defines an extended 9.6-inch standoff length, designed specifically to extend past thick thermal insulation blankets on large steam turbines while keeping the wiring junction easily accessible.

Q4: How does this housing secure the probe against high-frequency industrial vibration?

A4: The internal adjustment sleeve features an independent mechanical locking collar that clamps down firmly on the probe body, stopping any rotational or linear drift during machine operation.