21000-34-10-00-050-03-02 Bently Nevada Proximity Probe Housing

Bently Nevada 21000 Series Proximity Probe Housing Assemblies

• Brand & Model Focus – This 21000-34-10-00-050-03-02 assembly includes a factory-installed 3300 XL probe. The Bently Nevada 21000 series features a CSA Type 4 enclosure, guaranteeing explosion-proof operation in hazardous environments.
• Precise Mechanical Specifications – The unit includes a 5.0 inch probe penetration (suffix 050) and a 1.0 meter probe cable (suffix 10). We machine the body from aluminium with a 304 stainless steel sleeve for excellent corrosion resistance.
• Complete Fitting Set – We supply the housing with a 3/4-14 NPT plug, a 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip. The grip accommodates three cable sizes: 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches.
• Mounting Thread & Adapter – It comes with the -02 mounting thread option (3/4-14 NPT) because the standoff adapter suffix is -00. This ensures a straightforward installation into standard conduit openings.
• Dimensions & Weight – The maximum (C) + (D) dimension with visible probe details reaches 17.0 inches (43.18 cm). Total maximum (C) + (D) extends to 32.9 inches (83.5 cm). The assembly weighs 1.1 kg (2.4 lb) typical without fittings.

Technical Specifications & Performance

• Measurement System – The 21000-34-10-00-050-03-02 uses a reverse mount 3300 XL 8 mm probe. It delivers a sensitivity of 200 mV/mil (7.87 V/mm) for displacement measurements, ensuring high linearity and resolution for shaft vibration and position monitoring.
• Frequency Response – The system provides a frequency response of 0 to 10 kHz, covering both slow roll and high-speed machine vibrations. You can rely on its accuracy for critical protection applications.
• Environmental Tolerance – The aluminium housing and stainless steel sleeve withstand harsh industrial conditions. The assembly operates reliably in temperatures from -35°C to +150°C, with excellent resistance to moisture and dust.
• Electrical & EMC Protection – We integrate the probe with a connector protector, and the housing design minimizes electromagnetic interference. This feature ensures stable signal transmission even in noisy plant environments.
• Interchangeability & Linearity – Each unit meets strict linearity tolerances (± 0.025 V) per API 670 standards. The eddy-current sensing technology provides accurate static and dynamic measurements without physical contact.

Frequently Asked Questions (FAQ)

• Is this housing suitable for intrinsically safe applications? Yes, the 21000-34-10-00-050-03-02 comes with selectable hazardous area approvals. You can use it with intrinsically safe barriers.
• What is the maximum temperature the probe can withstand? The 3300 XL probe inside this housing operates continuously from -35°C to +150°C, making it ideal for turbines and compressors.
• Does the assembly include the proximity probe? Absolutely. The package includes the 3300 XL 8 mm probe with a 1.0 m cable, already mounted in the housing.
• What conduit fitting size does it support? The main port is 3/4-14 NPT. We also include a reducer to 1/2-14 NPT and a multi-size cable grip.
• How do I verify the correct probe penetration? Refer to the (C) + (D) dimension markings on the probe. The maximum visible part length is 17.0 inches to ensure proper gap.
• Are these units new or refurbished? We supply only new & original units in factory packaging. Each includes a 12-month factory warranty.
• Can I mount this housing without a standoff adapter? Yes, suffix -00 means no adapter, so you will use the -02 mounting thread (3/4-14 NPT) directly.

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