21128-03-02 Bently Nevada Velocity Transducer Housing — Explosion-Proof

Bently Nevada 21128-03-02 Velocity Transducer Housing

• Manufacturer: Bently Nevada
• Model: 21128-03-02
• Type: Water & Corrosion-Resistant Velocity Transducer Housing
• Warranty: 12 months from delivery date

The Bently Nevada 21128-03-02 housing protects velocity sensors from water, impact, and harsh weather.
It meets NEMA 4X and IP65 standards, ensuring reliable operation in industrial environments.

Main Highlights

• Built from durable 303 stainless steel for long life.
• Withstands temperatures from -29°C to +121°C (-20°F to +250°F).
• Resists corrosion, water jets, and physical stress.
• Explosion-proof version available for CSA Class I, II, III, Div 1 (Groups B–G).
• BASEEFA option (BA42608) meets BS EN 60079-14 and IEC IP65.
• Optional tall cap for Velomitor CT and 9200 / 74712 Seismoprobe sensors.
• Requires 89477-AA cable for proper connection to monitors.

Technical Specifications

• Part Number: 21128-03-02
• Mounting Thread: 1/2-in 14 NPT
• Cable Exit Fitting: 1/2-in NPT, explosion-proof type
• Outlet Port: 1/2-in NPT
• Internal Mounting Thread: 1/2-in 20 UNF (21128, CA21128)
• BA42608 Internal Thread: 5/8-in 18 UNF-2B
• Weight: 1.6 kg (3.55 lb)
• O-Ring Material: Neoprene (moisture seal)
• Moisture Protection: Resistant but not submersible
• Ingress Rating: IP65 / NEMA 4X
• Operating Temperature: -29°C to +121°C

Option Tree – Configuration Code

• 21128 – AA-BB
• AA = Mounting Thread & Cap Option
  • 03 → 1/2-in 14 NPT thread
• BB = Cable Exit Fitting Option
  • 02 → 1/2-in NPT explosion-proof fitting

Performance Advantages

• High corrosion resistance in offshore and plant areas.
• Supports both horizontal and vertical mounting positions.
• Reliable seal for vibration sensors in wet environments.
• Improved mechanical integrity for rotating machinery monitoring.
• Designed for use with Bently Nevada Velomitor series sensors.

Installation & Use

• Connect with cable 89477-AA for secure signal transfer.
• Check O-ring before sealing; replace if worn.
• Ensure conduit fittings are tight to maintain IP65 rating.
• Use tall cap for extended sensor bodies.
• Inspect housing periodically for corrosion or leaks.

Packing & Delivery

• 1 × Bently Nevada 21128-03-02 Housing (without velocity sensor)
• Mounting kit and sealing components
• Installation sheet and packing checklist
• Ships worldwide via FedEx, UPS, or DHL

FAQ – Expert Insights

• Can I use this housing outdoors?
  Yes. It resists rain, dust, and hose water under NEMA 4X and IP65 conditions.
• Which cable works best with this housing?
  Use 89477-AA to connect Bently Nevada Velomitor sensors to monitoring systems.
• Does the tall cap affect sensor accuracy?
  No, the tall cap only provides internal clearance and does not alter signal quality.
• Can I install it near high vibration machines?
  Yes, it is designed to handle vibration in turbines, compressors, and pumps.
• How often should I replace the O-ring?
  Inspect it every 12 months or during maintenance; replace if hardened or cracked.

Contact Information

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825

Original Source: https://www.powergearx.com/

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