Summary – Resistance Temperature Detector or
Thermocouple

Both thermocouples and RTD’s are useful sensors for determining process temperature. RTD’s provide higher accuracy than thermocouples in their temperature range because platinum is a more stable material than are most thermocouple materials. RTD’s also use standard instrumentation wire to connect to the measurement or control equipment. Thermocouples are generally less expensive than RTD’s, they are more durable in high vibration or mechanical shock applications and are usable to higher temperatures. Thermocouples can be made smaller in size than most RTD’s so they can be formed to fit a particular application.One to one Assessment