The CT, CTX & CT/LTC models measure top oil temperature and winding current to calculate winding temperature. They are ideal for new transformers and installed transformers where heat run data is available.
The DC, TC and SC models utilize a heated thermowell to measure winding temperature. This simiplifies installation on existing transformers, particularly when upgrading from analog gauges.
The LTC model monitors the load tap changer temperature and the temperature difference between the LTC tank and the main tank.