Technical Specifications Breakdown
Key parameters for the 21128-11-01 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Material | 303 stainless steel |
| Mounting Thread and Cap Option | Unthreaded base, 28.5 mm (1.125 in) diameter with tall cap |
| Cable Exit Fitting | 1/2-in NPT plug |
| Temperature Rating | -29°C to +121°C (-20 °F to +250°F) |
| Moisture Protection | Resistant to moisture and corrosion but is not submersible |
| O-ring Material | Neoprene |
| Weight | 1.6 kg (3.55 lb) without velocity sensor or fittings |
| Outlet Port Size | 1/2-in NPT |
| Internal Mounting Thread (21128 and CA21128) | 1/2-in 20 UNF |
Industry Applications
The tall cap accommodates Velomitor CT sensors or 9200/74712 Seismoprobes with isolated bases. Use it in areas with hose-directed water or corrosive atmospheres to prevent sensor damage and reduce unplanned downtime.
Installation & Setup Guidance
Mount the housing on a flat surface using the unthreaded base. Ensure the O-ring is properly seated to maintain the NEMA 4X/IP65 seal. For Velomitor CT sensors, the tall cap is required. Use cable part number 89477-AA to connect the sensor to a monitor. Tighten the 1/2-in NPT plug securely to prevent moisture ingress.
Maintenance & Reliability
Periodically inspect the O-ring and housing for signs of wear or corrosion. Clean the exterior with a mild detergent and water. Do not submerge the housing. Replace the neoprene O-ring if it becomes cracked or deformed to maintain environmental sealing.
Robust Protection for Critical Velocity Measurements
Industrial environments expose velocity sensors to water, corrosion, and physical abuse. The Bently Nevada 21128-11-01 Velocity Transducer Housing provides a durable shield, ensuring sensor longevity and measurement accuracy. Constructed from 303 stainless steel, this housing meets NEMA 4X and IP65 requirements when properly installed, making it suitable for washdown areas and outdoor installations.
Compatibility & Integration
The 21128-11-01 works with Bently Nevada velocity transducers such as Velomitor CT, 9200, and 74712 Seismoprobe. The internal mounting thread (1/2-in 20 UNF) ensures a secure fit for compatible sensors. The 1/2-in NPT outlet port allows standard conduit connections.
Selection Guide & Purchasing Advice
When ordering the 21128-11-01, verify your sensor type and cable requirements. AutoDCSTech stocks this housing and can advise on compatibility. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21128-11-01 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
