Galliumarsenid basierte faseroptische Temperaturmessgeräte

Insulogix® T2, fiber optic thermometer

Weidmann InsuLogix® T is designed to measure transformer winding hot spots in real time. The drift-free, re-calibrationfree and maintenance-free InsuLogix® T allows an optimized operation of the transformer at safe load capacity during normal and emergency conditions.

Power transformers often take the brunt of an overload Condition. They are the most likely to be damaged without the appropriate control and protection.

Weidmann InsuLogix® T is designed to measure transformer winding hot spots in real time. The drift-free, re-calibrationfree and maintenance-free InsuLogix® T allows an optimized operation of the transformer at safe load capacity during normal and emergency conditions.

The temperature measurement is based on Gallium Arsenide crystal sensor mounted on 200 μm all-silica fiber. The probe consists of a glass fiber with PTFE sheath, which is also protected by a PTFE spiral wrap.

The sensor possesses a resilient construction and has dielectric resistant materials featuring complete immunity to EMI and RFI environments. The optic cable is specially designed for permanent installation in a liquid-immersed transformer.

Unlike conventional top oil temperature measurements which can lag hours behind in response time, optics provide direct, real-time accurate measurements of the transformer winding temperature, suitable for dynamic load control or as a valuable input to calibrate thermal models.

  • Choice of 2 to 16 measurement channels,
  • watchdog function
  • one system fault relay
  • one relay for probe error
  • two relays for temperature thresholds
  • Configurable at factory 4-20mA or 0-10 V DC analog outputs
  • No drift, no re-calibration required, light source does not change for the lifetime of the transformer
  • MODBUS communication protocol RTU or TCP
  • Can be supplied with Weidmann SmartSpacer®

Depending on the measurement environment, several sensor designs are available with different ruggisation of the fiber tube and sensor tip (see specific sensor data sheets).

Customized sensor designs can be offered for enquiry.
On request a back-tracing according ISO 17025 can be offered.