The document describes the features and characteristics of the products.
The ALTEC AL808 is a modular digital controller designed for industrial measurement and control of temperature, humidity, pressure, weight, flow, level, acidity and more. It features a microprocessor, EEPROM, switch‑mode power supply, high‑speed 16‑bit A/D converter, and proprietary PID algorithms for high accuracy and strong anti‑interference performance.
The manual provides detailed guidance on instrument installation, electrical connections, panel layout, operation keys, software configuration, PID tuning, fault display, linear input calibration, curve programming, and serial communication interfaces (RS‑232/RS‑485/RS‑422). Optional functions such as printing, analog set‑point transmission, and manual/automatic switching are also described. This manual is written in Chinese.