Level controllers without moving parts come in many versions and are resistant to dirt. Capacitive level controllers are available for gases up to -200 °C and hot adhesives up to +230 °C. PTFE and PEEK are the materials of choice here because they prevent adhesion. The Opto fill sensor with glass or PSU * does not require a medium adjustment, just add it to the top of the tank. These sensors can also be used as explosion-proof units in accordance with ATEX standards. Ultrasonic sensors, pressure controllers, or capacitive high-temperature measuring probes KFA continuously monitors and records filling levels.