21128-14-01 | Bently Nevada 1.6 kg Velocity Transducer Housing

What Makes the 21128-14-01 Essential for Harsh Environments?

When water jets, corrosive chemicals, or physical impacts threaten your velocity sensors, the 21128-14-01 delivers robust protection. This Bently Nevada housing, constructed from 303 stainless steel, meets NEMA 4X and IP65 requirements when properly installed. It is the preferred choice for non-hazardous locations where durability and environmental sealing are critical.

Key Features of the 21128-14-01

• 303 stainless steel construction resists corrosion and physical abuse.
• Meets NEMA 4X and IP65 standards when installed correctly.
• Temperature rating from -29°C to +121°C (-20°F to +250°F).
• Weighs 1.6 kg (3.55 lb) without sensor or fittings.
• Includes 1/2-in 14 BSP (G 1/2-in) mounting thread with tall cap.
• 1/2-in NPT plug cable exit fitting.
• Neoprene O-ring ensures a reliable moisture seal.
• Resistant to moisture and corrosion but not submersible.

The tall cap option accommodates Velomitor CT sensors and 9200 or 74712 Seismoprobe sensors with isolated base. For Velomitor connections, use cable part number 89477-AA.

Applications and Use Cases

Industries such as oil and gas, chemical processing, and power generation benefit from the 21128-14-01. It shields velocity transducers in areas exposed to hose-directed water, corrosive atmospheres, or mechanical impact. By preventing sensor damage, it reduces unplanned downtime and maintenance costs.

Installation Guide

Mount the housing using the 1/2-in 20 UNF internal thread. Ensure the O-ring is properly seated before tightening. Use the 1/2-in NPT outlet port for cable entry. For hazardous environments, select the CA21128 explosion-proof version with CSA certification. Always follow the manufacturer's manual for safe installation.

Maintenance and Reliability

Inspect the housing periodically for signs of corrosion or O-ring wear. The 303 stainless steel body provides long service life in most industrial settings. Replace the Neoprene O-ring if any degradation is observed to maintain IP65 integrity. Regular checks help avoid moisture ingress and sensor failure.

Compatibility and Integration

The 21128-14-01 works with Bently Nevada velocity sensors, including Velomitor CT and Seismoprobe models 9200 and 74712. Use cable 89477-AA for Velomitor connections. The housing does not include the sensor; order separately. For explosion-proof needs, the CA21128 version requires a CSA-approved sensor installed at the factory.

Frequently Asked Questions

Q: What is the temperature range of the 21128-14-01?

A: It operates from -29°C to +121°C (-20°F to +250°F).

Q: Is the 21128-14-01 submersible?

A: No, it is resistant to moisture and corrosion but not submersible.

Q: What cable is needed for a Velomitor sensor?

A: Use cable part number 89477-AA to connect the Velomitor sensor to a monitor.

Q: What is the weight of the 21128-14-01?

A: It weighs 1.6 kg (3.55 lb) without the velocity sensor or fittings.

Q: Does the 21128-14-01 include a sensor?

A: No, the housing is sold without a sensor. The explosion-proof CA21128 version must be ordered with a CSA-approved sensor.

Product Support and Availability

The 21128-14-01 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. We are your trusted supplier for industrial automation parts.