Level controllers without moveable parts are available in various versions and are extremely resistant to soiling. Capacitive level controllers are available for gases to -200 °C as well as hot glue up to 230 °C. PTFE and PEEK are here the preferred materials because they prevent adhesions. Opto fill sensors with glass or PSU tip do not require a medium adjustment and are simply added top the tank. These sensors are also available as explosion-proof units in accordance with ATEX. Ultrassonic sensors, pressure controllers or the capacitive high-temperature measuring probe KFA continuously monitor and log fill levels.
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