Lln series industrial liquid level sensors are designed for industrial environments exposed to extremes of temperature pressure vibration and shock standard devices feature rugged stainless steel housings and polysulphone domesthe mode of operation is based on the same principal as the ll series an internal regulator enables a supply voltage in the range of 10 40 vdc to be used while the output is capable of sinking up to 200 matypical applications industrial compressors machine tools m