Bently Nevada 21128-01-03 Velocity Transducer Housing, NEMA 4X, IP65

Technical Specifications Breakdown

Key parameters for the 21128-01-03 are listed below for quick reference:

Industry Applications and Cost Benefits

In the oil and gas sector, the 21128-01-03 housing protects velocity transducers on rotating machinery, such as compressors and pumps, from water spray and physical impact. This reduces sensor replacement frequency and maintenance labor costs. In water treatment plants, the housing's corrosion resistance extends sensor life in humid, chemical-laden environments, lowering total cost of ownership. For general manufacturing, the IP65-rated enclosure prevents ingress of dust and low-pressure water jets, safeguarding uptime.

Installation and Setup Guidance

When installing the 21128-01-03, ensure the housing is properly sealed to maintain NEMA 4X and IP65 protection. For non-hazardous areas, use cable part number 89477-AA to connect the Velomitor sensor to a monitor (as noted in the product data). The unthreaded base (01 option) with 28.5 mm diameter requires appropriate mounting hardware. For explosion-proof installations, order the CA21128 version with a CSA-approved velocity sensor pre-installed.

Maintenance and Reliability

Periodically inspect the neoprene O-ring and seal surfaces for wear or contamination to maintain moisture resistance. The 303 stainless steel construction resists corrosion, but regular cleaning of the exterior in harsh environments extends service life. Since the housing is not submersible, avoid immersion and ensure drain paths are clear. These simple steps maximize reliability and minimize lifecycle costs.

Robust Protection for Velocity Sensors in Harsh Environments

The Bently Nevada 21128-01-03 velocity transducer housing is engineered to shield critical velocity sensors from hose-directed water, corrosion, physical abuse, and other adverse environmental conditions. Constructed from 303 stainless steel, this housing meets NEMA 4X and IP65 requirements when properly installed, making it a cost-effective choice for non-hazardous locations. By preventing sensor damage, it reduces unplanned downtime and replacement costs, delivering a strong return on investment for industrial operations.

Compatibility and Integration

The 21128-01-03 is designed for use with Bently Nevada velocity sensors, including the Velomitor CT (requires tall cap option) and 9200 or 74712 Seismoprobe with isolated base (also requires tall cap). For BASEEFA-approved installations, use the BA42608 housing with a 5/8-in 18 UNF-2B internal thread. The 1/2-in NPT cable exit fitting (03 option) accommodates explosion-proof and cable grip fittings.

Selection Guide and Purchasing Advice

Select the 21128-01-03 for non-hazardous environments requiring NEMA 4X and IP65 protection. For hazardous areas, choose the CA21128 (CSA certified) or BA42608 (BASEEFA approved). The 01-03 configuration includes an unthreaded base and 1/2-in NPT cable exit. Contact AutoDCSTech to verify current lifecycle status and availability before ordering. Our team can help you select the correct housing for your application, ensuring optimal protection and cost efficiency.