PAI‑4000 is a core remote tank level measuring module for vessel tank gauging system. It accepts 4‑20mA analog signal from level sensors, equipped with RS‑485 communication interface and multi‑channel alarm relay outputs for high‑high, high, low and low‑low level alarm. It supports power input of AC100‑220V or DC24V, transmits tank level data to display units DLT‑SMA / DLT‑PAB. Widely used for ballast tanks, fuel oil tanks and bilge tanks liquid‑level monitoring onboard ships.
