The ZW-HC101 automotive in-line conductivity meter is primarily designed to monitor liquid conductivity within the thermal management systems of hydrogen fuel cell engines. It operates by generating an excitation signal across internal and external electrodes and capturing a corresponding measurement signal based on the liquid's conductivity; an integrated automotive-grade intelligent chip then processes this signal using high-precision circuitry and software algorithms to provide a digital output of the conductivity value. Developed in compliance with the IATF 16949 automotive quality management system, the device holds automotive component design verification reports and CNAS laboratory automotive-grade EMC certification, representing a mature, stable, and high-performance sensor that integrates automotive electronics with intelligent sensing technology.