Product Overview
The Bently Nevada 107770-04-03 is a factory-assembled Velocity Transducer Housing that combines a 330500 Velomitor Sensor with a 21128 Housing. This CENELEC-approved unit is built for Zone 1, Group IIC hazardous areas, making it a practical choice for oil, gas, and industrial automation applications where reliable vibration monitoring is critical.

Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 107770-04-03 |
| Model | Velocity Transducer Housing – CENELEC approved |
| Mounting Thread | 1/2-14 BSP |
| Cable Exit Fitting | 1/2-14 NPT explosion-proof with cable gland seal |
| Hazardous Area Rating | CENELEC Zone 1, Group IIC |
| Condition | New & Original in Factory Packing |
| Manufacturer | Bently Nevada |
Key Parameters Explained
The 1/2-14 BSP mounting thread ensures a secure fit in standard industrial ports, while the 1/2-14 NPT cable exit fitting with cable gland seal provides a robust, explosion-proof connection. The CENELEC Zone 1, Group IIC rating means this housing is suitable for environments where explosive gas atmospheres are likely to occur. For Zone 0/1 applications, the equipment must be connected to equipment meeting the listed entity parameters, and cables type A or B (in compliance with EN 60079-25) must respect the cable parameters listed with the entity parameters. In Zone 2, the supply electrical parameters shall not exceed the values mentioned in the tables.

Applications
This housing is ideal for oil and gas facilities, chemical plants, and other industrial settings where vibration monitoring in hazardous areas is required. It integrates seamlessly with Bently Nevada 3300 series monitoring systems and other compatible equipment. Whether you are upgrading an existing installation or building a new one, the 107770-04-03 offers a reliable, ready-to-ship solution.
Installation and Maintenance
Installation should follow the manufacturer’s guidelines for hazardous area equipment. Ensure proper grounding and connection to compatible monitoring systems. Periodic inspection of the cable gland and mounting threads is recommended to maintain the explosion-proof integrity. Always verify current lifecycle status and availability with Oil AutoTech before ordering.
Why Choose Oil AutoTech
Oil AutoTech specializes in fast dispatch of spares for oil, gas, and industrial automation. With quick worldwide delivery and hands-on technical selection help, we ensure you get the right part when you need it. Contact Oil AutoTech today for pricing and availability of the 107770-04-03.
