... level meter LLXK-MR series resistance rotary sealing material level controller: Application l metallurgy, chemical industry, petroleum, electricity, food, paper, ... material environment Use Upper and lower limit of measurement Blade speed 5 to 6 rev / min Medium density ≥ 0.3g ... ) Ambient temperature -30 ~ +80 °C Power supply AC24V, 110V, 220V, 50/60Hz; DC24V Output Switching signal Out line port M18x1 ...