The non-contact conductivity measurement principle is currently the safest and most cost-effective technology for measuring sulfuric acid concentration, mainly used for process control and equipment safety protection in sulfuric acid production. The water addition of the diluter and interlock protection are controlled by measuring the concentration of high-temperature concentrated sulfuric acid in the waste heat recovery device of the sulfuric acid plant with a non-contact conductivity sensor. Conventional contact-type conductivity sensors are not suitable for such high-temperature and high-concentration applications. Conventional intrusive electrodes may suffer insulation damage due to high temperatures or acid leakage from the installation flange, which can corrode the sensor wires.

The HAS series sulfuric acid concentration analysis is an ideal choice for measuring the acid concentration in sulfuric acid plants. This is because the sensor of this series of sulfuric acid concentration analyzers adopts a non-contact sensor, and the part of the sensor that comes into contact with sulfuric acid is made of PFA material that is resistant to high temperatures and corrosion. It can withstand the sulfuric acid corrosion and temperature requirements at all measurement points during the production of the sulfuric acid plant. The HAS system sulfuric acid concentration analyzer is equipped with a temperature compensation curve for sulfuric acid temperatures ranging from 20 to 220° C. During the measurement of sulfuric acid concentration, there will be no fluctuations in acid concentration due to temperature changes. The sulfuric acid concentration of the waste heat recovery device can also be measured from room temperature to temperature, thereby solving the problem that the waste heat recovery device cannot measure at low temperatures.