Temperature transmitters

Thermocouples are temperature sensors that generate a voltage directly dependent on temperature. Compared to resistance thermometers, they are particularly suitable for high temperatures up to 1700 °C. The instruments are constructed of mineral insulated cable and are highly resistant to extremely high vibration loads. Accuracy classes 1 and 2 apply to thermocouples according to IEC 60584 and standard and special classes according to ASTM E230.

Resistance thermometers are equipped with platinum sensor elements that change their electrical resistance as a function of temperature.

Temperature transmitters convert an input signal from a wide range of sensors, such as resistance sensors and thermocouples, and in some cases potentiometers, into a standardised output signal (e.g. 0 … 10 V or 4 … 20 mA). With digital temperature transmitters, the sensor type and measuring range can be freely configured, along with a number of additional options such as fault signalling or measurement location identification.