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residual chlorine refers to the effective disinfectant components remaining in water after disinfection at a water treatment plant commonly using chlorine gas, sodium hypochlorite, etc. The function of residual chlorine sensors is to monitor the concentration of residual chlorine in the water in real time. Residual chlorine sensor commonly used in water treatment plants are primarily based on electrochemical methods and colorimetric methods. Delfino's CL4 residual chlorine sensor employs a membrane-covered amperometric dual-electrode system suitable for measuring free inorganic chlorine under constant pH conditions. If you are interested in the chlorine sensors, welcome to contact us: info@delfino.hk

Delfino online pH controller has two 4-20mA current outputs. It can not only realize the output of pH values, but also control the metering pump to realize the dosing of acid or base. This video shows how to connect the controller with the dosing pump, how to set the current on the pH controller. If you are interested in the online pH controller, do not hesitate to contact: info@delfino.hk

pH measurement of hydrofluoric acid solutions has always been a challenging problem in fields such as semiconductors, photovoltaics, chemicals, and environmental monitoring. Ordinary glass electrodes are extremely vulnerable to HF, exhibiting inaccurate measurements and short lifespans, leading to distorted experimental data and production process disruptions. These problems stem from the chemical properties of hydrofluoric acid and its potential to react with the lithium silicate glass sensing membrane of ordinary pH electrodes. Daruifuno ASP124E series hydrofluoric acid-resistance pH glass electrode, utilizes a cylindrical glass membrane resistant to hydrofluoric acid corrosion, capable of withstanding hydrofluoric acid concentrations up to 4000ppm.If you are interested in our pH electrode, please contact: info@delfino.hk

The OPTU850 model online turbidity sensor made by Delfino supports many installation method. This video demonstrates how to perform the immersion installation. We can offer the related installation accessories. The online turbidity sensor adopts the infrared scattering principle, the measuring range can be 0~1000NTU or 0~4000NTU. The advantage of the turbidity sensor is that it can measures the suspended solids value at the same time. The range of the TSS is 0~3000mg/L. If you are interested in our turbidity sensor, contact us via email: info@delfino.hk