Temperature Sensors & Transmitters

Temperature sensing devices provide temperature measurement and signals for monitoring or control. The most common sensing methods include thermocouples and resistance temperature devices (RTD).

• Thermocouples consist of two dissimilar metal wires joined at a hot junction, generating millivolt signals as temperature changes
• RTDs measure the change in resistance as the temperature of the sensing element changes
• Temperature transmitters convert millivolt input signals from thermocouples or RTDs to analog outputs compatible with industrial monitoring or control devices
• Temperature switches open or close switch contacts when a preset temperature is reached, and provide simple setpoint-tripped outputs for alarming, set and reset hysteresis, and simple temperature control
• Infrared pyrometers allow non-contact sensing by determining the surface temperature of an object based on its emitted infrared radiation, preventing sensor contamination or exposure to hazardous materials
• Thermowells allow thermometers or spring-loaded RTD and thermocouple probes to be inserted and removed without interrupting the process and eliminate the need for a separate probe mounting fitting or adapter

Temperature Sensors Overview