... level meter LLXK-MR series resistance rotary sealing material level controller: Application l metallurgy, chemical industry, petroleum, electricity, food, paper, coal ... / min Medium density ≥ 0.3g/cm3 (large leaves) Ambient temperature -30 ~ +80 °C Power supply AC24V, 110V, 220V, 50/60Hz; DC24V ... LLXK-M-R series resistance rotary fully sealed material level controller