135613-13-00 Bently Nevada High Temperature Transducer Assembly

Overview

Engineered for extreme thermal conditions, the 135613-13-00 high-temperature case expansion transducer assembly from Bently Nevada monitors thermal growth in heavy rotating machinery. This direct-current (DC) LVDT sensor system converts linear mechanical displacement into a proportional DC voltage signal, ensuring reliable structural feedback during severe startup and continuous load cycles.

Core Technical Index

Model Suffix and Configuration Breakdown

• Base Assembly Model: 135613 High Temperature DC Transducer Platform.
• Linear Range Option (-13): Configures the unit for a 101.6 mm (4.0 in) extended stroke range paired with a 228.6 mm (9.00 in) core rod.
• Spring Return Option (-00): Designates operation without an internal mechanical return spring, utilizing solid mechanical linkages.

Global PLC Spare HUB's Insight

Field maintenance data from high-temperature power generation assets demonstrates that monitoring thermal growth under extreme ambient conditions requires robust signal conditioning. Technicians installing the 135613-13-00 should verify that incoming loop power remains within the +13.5 to +26 Vdc window to prevent voltage sag over long cable runs. Ensuring proper mechanical alignment of the 6-40 UNF-2B core end eliminates side-load friction, ensuring long-term signal fidelity in high-vibration steam turbine enclosures.

Recommended Applications and Equipment Integration

• High-Capacity Steam Turbines: Measures differential thermal expansion between turbine casings and foundation sole plates.
• Heavy-Duty Gas Turbines: Tracks shell growth to prevent internal rubbing during high-temperature thermal transitions.
• Compressor Casing Monitoring: Evaluates axial and radial frame distortion under continuous high-load industrial operation.
• Turbomachinery Safety Interlocks: Interfaces directly with turbine supervisory instrumentation (TSI) racks to trigger protective trips if expansion exceeds safety thresholds.

Advanced Onboard Diagnostics and Signal Tracking

• Low-Noise Output Filtering: Maintains output signal noise below 10 mV to ensure clean analog data transmission.
• Drift Mitigation: Temperature coefficient compensation prevents thermal error accumulation in hot environments.
• Electromagnetic Shielding: Complies with EN 61000-6-2 and EN 61000-6-4 standards to resist industrial EMI/RFI interference.

Fulfillment, Logistics, and Warranty Terms

• Rapid Order Dispatch: Guaranteed handling and global dispatch within 24 to 48 hours of order confirmation.
• Express Global Shipping: Delivered securely through trusted international carriers including FedEx, UPS, and DHL.
• Quality Assurance: Fully protected by a comprehensive 12-month operational warranty from the date of purchase.

Frequently Asked Questions (FAQ)

Q1: What specific advantage does the 135613-13-00 provide in high-temperature turbine environments?

A1: It features specialized internal thermal compensation and rugged stainless-steel construction designed to withstand operating temperatures up to +85 °C without signal drift.

Q2: How does the -13 linear range option modify the physical measurement capability of the unit?

A2: The -13 suffix configures the sensor with a 101.6 mm (4.0 in) stroke range utilizing a 228.6 mm (9.00 in) core rod for extended displacement tracking.

Q3: What troubleshooting steps should engineers take if the DC output voltage exceeds the normal +1 to +6 Vdc range?

A3: Verify that the mechanical core has not bottomed out in either direction, check for loose mounting brackets, and confirm that supply voltage is stable above +13.5 Vdc.

Q4: Why is the -00 spring option preferred for high-temperature case expansion monitoring?

A4: Operating without a spring return relies on direct mechanical coupling to the machine casing, eliminating spring fatigue risks in continuous high-vibration service.

Q5: What factors should guide selection when replacing legacy transducers with this Bently Nevada assembly?

A5: Confirm physical mounting space for the 241 mm body length, verify that the control system accepts a +1 to +6 Vdc analog input, and ensure ambient temperatures do not exceed +85 °C.

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