77138-01 Bently Nevada Weatherproof Housing LVDT Enclosure
Manufacturer: Bently Nevada
Product No.: 77138-01
Condition： In stock
Product Type: LVDT Enclosure
Product Origin: USA
Payment: T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months
Estimate delivery times: 12-26 days (International), 3-6 days (United States).
Return within 30 days of purchase. Duties & taxes are non-refundable.
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77138-01 LVDT Environmental Protection Enclosure
The 77138-01 weatherproof housing provides rugged environmental containment for linear variable differential transformer (LVDT) position sensors. Manufactured in the U.S.A. by Bently Nevada, this heavy-duty 77138 Series enclosure shields sensitive displacement measurement electronics from moisture, aggressive chemical washdowns, and blowing dust. Instrument engineers deploy this enclosure in outdoor turbine yards, hydroelectric plants, and harsh petrochemical skids to guarantee stable valve stem and governor feedback.
Physical Dimensions & Measurement Range
| Parameter | Engineering Specification |
| Manufacturer | Bently Nevada |
| Part Number | 77138-01 |
| Product Type | LVDT Weatherproof Housing / Sensor Enclosure |
| Internal Travel / Range | 30.5 cm (12.0 inches) nominal stroke capacity |
| Housing Dimensions | 57.2 cm × 54.6 cm × 62.2 cm (22.5 in × 21.5 in × 24.5 in) |
| Country of Origin | Made in U.S.A. |
Mechanical Integration & Sealing Best Practices
- Structural Foundation: Bolt the 77138-01 chassis to a rigid vibration-isolated bracket near the monitored machine actuator.
- Cable Entry Management: Route all sensor signal leads through bottom-entry conduit hubs to prevent moisture ingress.
- Gasket Inspection: Verify compression of the internal perimeter elastomer seal during annual turnaround inspections.
- Core Alignment: Align the internal LVDT core rod strictly parallel to the actuator stroke to eliminate side-load friction.
Advanced Frequently Asked Questions (FAQ)
Q1: How does the 77138-01 enclosure mitigate internal condensation in high-humidity climates?
A1: The heavy enclosure walls accommodate internal space heaters or desiccant packs, preventing dew point accumulation during rapid ambient temperature drops.
Q2: Can this housing accommodate third-party displacement sensors alongside Bently Nevada LVDTs?
A2: While engineered specifically for Bently Nevada transducers, the 57.2 cm × 54.6 cm × 62.2 cm internal volume fits various industrial stroke sensors provided mounting brackets align.
Q3: What specific material grade constitutes the exterior shell of the 77138-01?
A3: It utilizes heavy-gauge, corrosion-resistant industrial alloy coated with a UV-stable epoxy finish to withstand marine and chemical plant atmospheres.
Q4: How does field alignment affect the 30.5 cm measurement range inside the housing?
A4: Mechanics must center the LVDT core within the 12-inch linear window to ensure symmetrical electrical output across full valve travel.
Q5: Why is bottom-entry conduit routing critical for this weatherproof unit?
A5: Side or top cable entries risk channeling rainwater along conduit threads; bottom entry leverages gravity to maintain waterproof integrity.
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Q: Are these parts 100% original and new?
A: Yes. Every component is guaranteed to be 100% original, brand-new, and factory-sealed. We also provide a 12-month comprehensive warranty for your peace of mind.
Q: How fast is the shipping to my country?
A: For in-stock items, we offer same-day dispatch. International express shipping (DHL/FedEx/UPS) typically delivers within 3–5 business days worldwide.
Q: Can I get a formal quotation with shipping costs?
A: Absolutely. Our sales team is ready to provide a detailed Proforma Invoice (PI) including the most competitive shipping rates for your location.
Q: Do you offer discounts for bulk orders?
A: We provide volume-based pricing for large projects or multiple-item orders. Please contact us to get our Best Price Guarantee.
12-Month Comprehensive Warranty
Every part supplied by Global PLC Spare Hub is covered by a 12-month warranty from the date of invoice.
- Coverage: Functional defects and hardware failures under normal operating conditions.
- Commitment: We provide immediate repair, replacement, or a full refund for any verified defective components to minimize your operational downtime.
Returns & Exchange Policy
We offer a 30-day return policy to ensure you receive the exact part your system requires.
- Eligibility: Returns are accepted for uninstalled items in their original, factory-sealed packaging.
- RMA Process: Please contact our support team to obtain a Return Merchandise Authorization (RMA) number before shipping.
- Fast Processing: Refunds or exchanges are processed within 3–5 business days after the returned item passes our technical inspection.
Need Technical Assistance?Not sure if this part is compatible with your system? [Consult our Engineers] before purchasing to ensure 100% compatibility.
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