Bently Nevada 21128-02-02 Velocity Transducer Housing Water-Resistant

Overview

The Bently Nevada 21128-02-02 housing protects velocity sensors from water, corrosion, and on-site physical impacts during field operations.
This robust enclosure provides reliable protection for industrial applications exposed to adverse environments.

Key Features

• 21128-02-02 meets NEMA 4X and IP65 standards for environmental protection.
• The explosion-proof CA21128 is CSA certified for use in Classes I, II, and III, Division 1, Groups B–G.
• The BA42608 model supports BASEEFA and BS EN 60079-14 compliance for hazardous areas.
• The tall cap option fits Velomitor CT, 9200, and 74712 Seismoprobe models with isolated bases.

Technical Specifications

• Manufacturer: Bently Nevada
• Model: 21128-02-02
• Category: Velocity Transducer Housing
• Mounting Thread & Cap Option: 3/4-in 14 NPT
• Cable Exit Fitting Option: 1/2-in NPT, explosion-proof fitting
• Internal Mounting Thread: 1/2-20 UNF for 21128 and CA21128, 5/8-18 UNF-2B for BA42608
• Temperature Range: -29°C to +121°C (-20°F to +250°F)
• O-ring Material: Neoprene for excellent sealing
• Moisture Resistance: Resistant to water and corrosion (not submersible)
• Weight: 1.6 kg (3.55 lb) without sensor or fittings
• Recommended Cable: 89477-AA for Velomitor sensor connection

Installation Guide

• Mount the housing using a 3/4-in 14 NPT conduit with thread sealant to prevent moisture ingress.
• Feed the cable through the 1/2-in NPT outlet and tighten to the specified torque.
• Insert the velocity sensor into the 1/2-20 UNF internal thread and align precisely.
• Use the tall cap when installing Velomitor CT or Seismoprobe units for extra clearance.

Packaging Contents

• 1 × Bently Nevada 21128-02-02 Velocity Transducer Housing
• 1 × Neoprene O-ring (pre-installed)
• 1 × Quick installation guide
• 1 × Mounting screw kit

Shipping & Warranty

• Worldwide express delivery via FedEx, UPS, or DHL.
• Secure packaging prevents shipping damage and supports fast logistics services.
• Includes a 12-month warranty covering manufacturing defects.

FAQ

• Q: Can I use this housing outdoors near seawater?
  A: Yes, it resists corrosion, but avoid immersion and clean salt residues regularly.
• Q: Does it include the velocity sensor?
  A: No, sensors are sold separately. Order CA21128 with a CSA-approved velocity sensor if required.
• Q: What cable connects the Velomitor sensor to a monitor?
  A: Use the 89477-AA cable for reliable signal transmission.
• Q: Why is the tall cap needed?
  A: It provides clearance for Velomitor CT and Seismoprobe installations.
• Q: Can it be mounted on vibration-prone machines?
  A: Yes, when mounted with isolators and secured properly.

Compliance & Notes

• The CA21128 must ship with a CSA-approved sensor to maintain certification.
• The BA42608 version complies with BASEEFA standards for hazardous areas.
• Use approved cable and fittings to maintain IP65 protection.

Contact Information

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

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