Fiber Optic temperature probe for transformer (with Kevlar)

TSENS-K

Fiber Optic Temperature Sensor

Accurate Monitoring Designed to Outlast Transformers

Transformers depend on accurate temperature data to mitigate aging caused by thermal stress and insulation degradation. The Kevlar-reinforced TSENS-K offers a durable and easy-to-install design, ensuring long-term temperature monitoring. It provides manufacturers and operators with reliable data critical for accurate transformer aging evaluation, proactive maintenance, and consistent performance.

Features

Designed for easy installation in oil-filled and dry-type transformers and reactors.
Built with rugged construction to exceed transformer lifespans.
Zero-drift GaAs technology ensures outstanding repeatability and reliable performance.
Compact 9 mm disc design, suitable for various transformer locations (windings, cores, busbars, tap changers, etc.).
Resistant to solvents and chemicals for enhanced durability.
Kevlar reinforcement along the entire probe length for enhanced strength and reliability.

Benefits

No calibration required, offering consistent and maintenance-free performance.
Exceptional stability with no shift over time, ensuring high accuracy.
Durable construction with double PFA Teflon reinforcement and a robust sensor tip for reliable operation.
Versatile design, available with or without a disc, suits various applications.
Meets and exceeds ASTM D2413 and D149 standards for superior quality.
Engineered for minimal partial discharge, delivering low PD levels.
Designed for long-term reliability and outlasting transformer lifespans.

Applications

Suitable for power transformers, both oil-filled and dry-type.
Enables precise direct temperature measurements.
Suitable for high-voltage environments (1 MV or more).
Ideal for HVDC windings.
Mountable in standard radial spacers.
Withstands kerosene desorption.
Works with all transformer oils, including ester based.
Compatible with Rugged Monitoring instruments.

Technical specifications

Temperature range

-200 °C to +250 °C

Repeatability

0.2 °C

Accuracy absolute temperature

+/- 0.8 °C

Accuracy relative temperature

+/- 0.2 °C

Probe sheathing material

Teflon spiral-wrap with Kevlar

Tip material

Torlon (with disc) or Polyimide (no disc)

Connector

Stainless alloy ST with zirconia ferrule
(Optional: Dielectric Torlon ST with zirconia ferrule)

Probe length

Up to 25 meters

Response time

Up to 0.2 sec without disc. About 2 sec with disc

Longevity

Probe accuracy and repeatability constant over time

Ordering Code

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