Temperature controllers plays a vital part in a multitude of processes. Along with a temperature controller there are controllers for pressure, pH, ORP, dissolved oxygen and pump control systems. Temperature controller are available in benchtop (laboratory) models and panel mount (industrial) models. A temperature controller can accept thermocouples and RTD sensors and provide multiple output relays and alarms to provide a feedback loop for when the temperature goes outside of the desired range. Pressure controllers monitor process pressure and provide output signals to keep the pressure at the needed range.