Product details
Bently Nevada 21128 Velocity Transducer Housing — Water-Resistant Enclosure
Bently Nevada 21128 velocity transducer housing protects sensors from water, corrosion, and mechanical damage in harsh industrial environments.
Key Features
- Rugged 303 stainless steel construction resists corrosion and mechanical wear.
- NEMA 4X & IP65 compliant when correctly installed for hose-directed water protection.
- Explosion-proof model: CA21128 certified for Class I, II, III Division 1 Groups B–G.
- BASEEFA-approved model: BA42608 meets BS EN 60079-14 and IEC IP65 requirements.
- Tall cap option accommodates Velomitor CT or 9200 / 74712 Seismoprobe with isolated base.
- Durable neoprene O-ring ensures moisture sealing.
Technical Specifications
- Brand: Bently Nevada
- Models: 21128, CA21128, BA42608
- Part Number Example: 21128-02-03
- Temperature Range: -29°C to +121°C (-20°F to +250°F)
- Weight: 1.6 kg (3.55 lb) without sensor
- Internal Mount Thread: 1/2-in-20 UNF (21128 & CA21128), 5/8-in-18 UNF-2B (BA42608)
- Outlet Port: 1/2-in NPT
- O-ring Material: Neoprene
- Moisture Resistance: Resistant to corrosion and humidity, not submersible
Suffix & Option Tree
- Configuration: 21128 – AA-BB
- AA = Mounting Thread & Cap Option
- 02 = 3/4-in 14 NPT
- BB = Cable Exit Fitting Option
- 03 = 1/2-in NPT, explosion-proof with cable grip fittings
Installation Guide
- Mount housing using 3/4-in NPT thread or proper adapter fittings.
- Use cable 89477-AA to connect the Velomitor Sensor to the monitor.
- Tighten all conduit fittings to maintain IP65 sealing.
- Inspect neoprene O-ring before installation.
- Use tall cap option when installing Velomitor CT or Seismoprobe with isolated base.
Packing List
- 1 × Bently Nevada 21128 Housing (without velocity sensor)
- Mounting hardware and sealing components
- Installed neoprene O-ring
- Installation checklist
- Ships via FedEx, UPS, or DHL
Shipping & Handling
- Each housing packed in foam-lined corrosion-resistant packaging.
- All packages include model labels and handling marks.
- Available worldwide shipping through FedEx, UPS, or DHL.
FAQ — Expert Tips
- How to choose between 21128, CA21128, and BA42608?
Use 21128 for standard areas, CA21128 for CSA hazardous zones, and BA42608 for BASEEFA sites. - Can I install Velomitor CT?
Yes, use the tall cap option to ensure clearance for the sensor. - Which cable should I use?
Cable 89477-AA ensures correct fit between sensor and monitor. - How to maintain IP65 rating?
Replace damaged O-rings and tighten fittings according to torque specs. - Operating temperature range?
Safe continuous operation between -29°C and +121°C.
Compliance Notes
- CA21128 must ship with a CSA-approved velocity sensor.
- BA42608 complies with BS EN 60079-14 and IEC IP65 standards.
- Follow local installation codes to preserve NEMA 4X/IP65 protection.
Contact Information
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825
Original Source: https://www.powergearx.com/
Partner: Ubest Automation Limited
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