Bently Nevada 21128-01-03 Velocity Transducer Housing – Stainless Steel Protection

Bently Nevada 21128-01-03 Velocity Transducer Housing

• The Bently Nevada 21128-01-03 housing shields velocity sensors from water, corrosion, and impact.
• Made from 303 stainless steel, it provides reliable field protection and a 12-month quality warranty.
• Designed to meet NEMA 4X and IP65 standards when properly sealed.

Core Features

• Model: 21128-01-03
• Mounting Thread and Cap Option: 01 = Unthreaded base, 28.5 mm (1.125 in) diameter
• Cable Exit Fitting Option: 03 = 1/2-in NPT, explosion-proof and cable grip fittings
• Temperature Range: -29°C to +121°C (-20°F to +250°F)
• Weight: 1.6 kg (3.55 lb)
• O-ring Material: Neoprene for moisture sealing
• Construction: 303 stainless steel for corrosion protection
• Ingress Rating: IP65 / NEMA 4X (non-submersible)
• Internal Mount Thread: 1/2-in 20 UNF for 21128 and CA21128; 5/8-in 18 UNF-2B for BA42608

Additional Technical Data

• Operating Temperature: -29°C to +121°C (-20°F to +250°F)
• Material Strength: Resistant to vibration and outdoor humidity
• Sealing Type: Threaded compression with neoprene O-ring
• Compatibility: Fits Velomitor CT, 9200, and 74712 Seismoprobe
• Mounting Method: Secure with 3/4-in NPT thread
• Connector Cable: Use 89477-AA for monitor connections
• Explosion Rating: Available with CA21128 for CSA Class I, II, III, Div.1 applications

Installation & Use

• Position the housing on a clean, flat surface before tightening.
• Use 89477-AA cable for a secure sensor-to-monitor connection.
• Choose a tall cap for Velomitor CT or isolated base sensors.
• Tighten the cap evenly to keep the O-ring seated and sealed.
• Avoid full water immersion; the unit resists moisture, not submersion.

Packaging & Delivery

• Includes one 21128-01-03 housing with cap and neoprene O-ring.
• Mounting screws and an installation sheet are included for setup.
• Ships worldwide via FedEx, UPS, or DHL.
• Covered by a 12-month warranty from delivery date.

FAQ

• Question:
  What is the main difference between 21128-01-03 and CA21128?
  Answer:
  CA21128 is CSA-certified explosion-proof, while 21128-01-03 suits standard areas.
• Question:
  Can I mount the housing horizontally?
  Answer:
  Yes, but ensure the cable fitting points downward to prevent moisture ingress.
• Question:
  How can I prevent corrosion around the threads?
  Answer:
  Apply a light film of anti-seize compound before installation.
• Question:
  What tools should I use for tightening the cap?
  Answer:
  Use a non-slip wrench and stop tightening once resistance is felt to protect the O-ring.
• Question:
  What is the best way to connect the Velomitor sensor cable?
  Answer:
  Use cable 89477-AA and route it through the 1/2-in NPT fitting for secure contact.

Contact & Support

• For inquiries, email sales@powergearx.com or message via WhatsApp at +86 18030005825.

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