What Is the 107770-01-03?
When hazardous area certification is non-negotiable, the Bently Nevada 107770-01-03 provides a pre-assembled, CENELEC-approved velocity transducer housing. This unit combines the 330500 Velomitor Sensor with a 21128 Housing, factory-installed to ensure consistent performance. It is rated for CENELEC Zone 1, Group IIC hazardous area applications, making it a reliable choice for vibration monitoring in explosive atmospheres.
Technical Specifications Breakdown
The 107770-01-03 is defined by three key ordering options that dictate its physical configuration:
- Mounting Thread Option: 01 = Unthreaded – This version uses an unthreaded mounting interface, simplifying installation in certain brackets or custom fixtures.
- Cable Exit Fitting Option: 03 = 1/2-14 NPT explosion-proof with cable gland seal – The cable exit is fitted with a 1/2-14 NPT explosion-proof connection and a cable gland seal, ensuring a secure, sealed entry point for wiring in hazardous zones.
- Hazardous Area Compliance – The assembly meets ATEX/IECEx requirements for Zone 0/1 and Zone 2, with specific conditions for safe use regarding cable type and electrical parameters.
These specifications directly address the need for robust, certified hardware in volatile industrial settings.
Industry Applications
In petrochemical refineries, the 107770-01-03 monitors rotating machinery such as pumps and compressors. Its CENELEC Zone 1, Group IIC rating allows installation directly in areas where flammable gases may be present. Similarly, in offshore oil platforms, this transducer housing provides essential vibration data for predictive maintenance, helping operators avoid unplanned downtime. The unthreaded mounting option simplifies retrofitting into existing sensor brackets.
Installation & Setup Guidance
Before mounting, verify that the cable type meets EN 60079-25 requirements (Type A or B) and respects the entity parameters listed for the specific zone. For Zone 0/1 installations, ensure the connected equipment matches the listed entity parameters. The 1/2-14 NPT explosion-proof fitting requires proper sealing during cable entry to maintain the housing's integrity. Use appropriate tools to tighten the cable gland without damaging the seal.
Maintenance & Reliability
Periodically inspect the cable gland and housing seals for signs of wear or corrosion, especially in harsh chemical environments. The factory-assembled design reduces field assembly errors, enhancing long-term reliability. Follow the manufacturer's safety manual for inspection intervals. Replacing the entire assembly rather than attempting field repairs preserves the hazardous area certification.
Compatibility & Integration
The 107770-01-03 integrates with Bently Nevada monitoring systems that accept velocity transducer inputs. It is designed for use with the 330500 Velomitor Sensor, which provides a proportional voltage output. The housing's cable exit option supports standard industrial wiring practices. Always verify compatibility with your existing monitoring hardware before ordering.
Selection Guide & Purchasing Advice
When ordering, confirm the mounting thread option (01 = Unthreaded) and cable exit fitting option (03 = 1/2-14 NPT explosion-proof with cable gland seal). Ensure the cable type you plan to use meets the hazardous area conditions specified in the ATEX/IECEx documentation. SpareTechPLC stocks this Bently Nevada 107770-01-03 as new and original in factory packing, backed by a 12-month warranty. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Frequently Asked Questions
Q1: What does the mounting thread option '01 = Unthreaded' mean for installation?
A: It means the housing has no threaded mounting hole, allowing you to use custom brackets or clamps for attachment.
Q2: Can the 107770-01-03 be used in Zone 0 areas?
A: Yes, it is rated for Zone 0/1 under ATEX/IECEx, provided the connected equipment meets the entity parameters and cable type requirements.
Q3: Is the 330500 Velomitor Sensor included with this housing?
A: Yes, the 107770-01-03 is factory-assembled with the 330500 Velomitor Sensor and 21128 Housing.
Q4: What cable type is required for Zone 1 installations?
A: The cable must be Type A or B in compliance with EN 60079-25 and must respect the cable parameters listed with the entity parameters.
Q5: Does SpareTechPLC offer a warranty on this product?
A: Yes, SpareTechPLC provides a 12-month factory warranty on all new and original products.
