Introduction DEMURE series industrial pH meter, this table is suitable for continuous monitoring of the pH value of aqueous solutions in industrial processes such as environmental protection, water treatment, petrochemicals, refining, metallurgy, machinery, water plants, power plants, papermaking, pharmaceuticals, printing and dyeing, food, etc. 2. Characteristics and specifications 2.1. Characteristics (1) Double high impedance differential preamplifier with strong anti-interference ability. (2) The transmission distance between the pH meter and the pH electrode can reach up to 100 meters. (3) The channel adopts optoelectronic isolation input and output technology, with strong anti-interference ability, and can be connected to various controllers and computers. (4) Three and a half digit display