107770-03-03 Bently Nevada CENELEC Approved Housing
Manufacturer: Bently Nevada
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Part Number: 107770-03-03
Condition：New with Original Package
Product Type: Velocity Transducers
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Bently Nevada 107770-03-03 serves as a ruggedized, explosion-proof enclosure for piezoelectric velocity sensors. This housing assembly protects sensitive vibration transducers from harsh industrial environments while ensuring a high-transmissibility mechanical path for vibration data. We supply this unit as 100% Brand New and Original, featuring CENELEC approval for use in hazardous areas. It integrates perfectly into 3500 series monitoring systems to track casing vibration on turbines, pumps, and fans.
Part Number Breakdown: 107770-AXX-BXX
| Option Code | Category | Specification for this Model |
| A: 03 | Mounting Thread | 1/2 - 14 NPT Mounting Thread |
| B: 03 | Cable Exit Fitting | 1/2 - 14 NPT Explosion-Proof Gland/Seal |
Technical Specifications
| Feature | Details |
| Housing Material | 316L Corrosion-Resistant Stainless Steel |
| Mounting Thread | 1/2 - 14 NPT |
| Cable Exit | 1/2 - 14 NPT with Explosion-Proof Seal |
| Approvals | CENELEC / ATEX Hazardous Area Rated |
| Weight | 142 grams (5.0 oz) typical |
| Mounting Torque | 32–46 kg·cm (24–40 in-lb) maximum |
| Frequency Response | Supports 4.5 Hz to 5 kHz monitoring |
| Connector Support | 2-pin Mil-C-5015 internal interface |
Engineering Advantages
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316L Stainless Steel Durability: The housing utilizes high-grade 316L stainless steel, which resists pitting and corrosion in chemical-rich or offshore environments. This ensures the velocity sensor remains protected and operational throughout the machine's maintenance cycle.
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Explosion-Proof Integrity: CENELEC approval guarantees safety in atmospheres containing explosive gases. The precision-machined threads and robust seals contain potential internal sparks, preventing ignition in high-risk zones like oil refineries or gas processing plants.
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Optimized Vibration Transmission: The flat-base design and specific mounting torque requirements ensure a rigid mechanical coupling between the machine casing and the internal sensor. This prevents signal attenuation or "false" vibration peaks caused by resonance within the housing itself.
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Compact, Tight-Space Installation: With a diameter of only 25.3 mm, the 107770-03-03 fits into narrow bearing housings and behind protective machine shrouds. The 1/2-14 NPT fitting simplifies plumbing with standard industrial conduit and cable glands.
FAQs
1. Does the 107770-03-03 include the velocity sensor internally?
No. This part number refers to the Housing Assembly only. You must pair it with a compatible Bently Nevada piezoelectric velocity sensor (transducer) to form a complete measuring unit.
2. What is the importance of the mounting torque specification?
Exceeding the 46 kg·cm limit can strip the 1/2 NPT threads or distort the housing base, leading to poor signal quality. Conversely, under-torquing creates a loose mechanical bond that filters out high-frequency vibration data.
3. Is this housing compatible with sensors from other manufacturers?
While the threads are standard, the internal dimensions and Mil-C-5015 connector alignment are engineered specifically for Bently Nevada transducers. Using generic sensors may compromise the environmental seal and CENELEC rating.
4. How do I ensure the explosion-proof seal remains valid?
You must use a certified cable gland that matches the 1/2-14 NPT exit thread. Apply an approved thread sealant to the mounting threads and ensure the cable exit is fully tightened to prevent moisture and gas ingress.