pH meter potentiometric method for the determination of the principles of the pH of the solution is the most basic method. PH measurement principle of the potential from the Nernst equation. Such as the one pair of reversible hydrogen ion electrode and a reference electrode into the solution, the composition of the original battery. Since the primary battery than the reference potential of the electrode under certain conditions is constant, then the value of the electromotive force of the galvanic cells with the test solution on the hydrogen ion activity becomes. So OPR instrument where good quality, what could be the original battery by measuring the electromotive force of OPR instrument? , PH value calculation solution. According to the Nernst equation the electrode potential is: E = E0 + 2.3026 RTFlgaH + = - 2.3026RT F pH (1) where E0, is the standard hydrogen electrode potential, which is a predetermined 0; R is the gas constant (8.31J? K-1mol-1); T is the thermodynamic temperature (27* + t) ℃; F is the Faraday constant (9.649 × 104mol-1); aH hydrogen ion activity. 2.3026RT / F is called the theory of the hydrogen ion electrode reversible electrochemical conversion factor. When the measured pH of the solution changes a potential of the OPR analyzer, since R and F are constants, and therefore the electrode potential is a function of temperature [2]. Single potential is measured out, and only the use of the reference electrode, at a certain temperature can only be measured, which measured the pH of the test solution. PH meter usage Introduction (1) The main technical specifications and model selection Yantai Oddo, E + H CPM, France Polymetron range: 0 to 14, precision: ± 0.05, Resolution: 0.01pH, the output signal: 1 ~ 5V, 4 ~ 20mADC, stability: ± 0.03pH / d (2) the use of caustic soda plant locations: a saltwater inlet, middle and brine into the outlet, salt water; chlorine and hydrogen treatment: Sodium hypochlorite detection; Evaporation: condensate tank inlet hot liquid seal; liquid hydrochloric acid and chlorine plant: two sets of hydrogen chloride synthesis furnace circulating backwater monitoring; PVC plant: Synthetic mist flutter set the water sample monitoring; chlorinated polyethylene plant: caustic scrubber detection, detection chlorination reactor liquor, wastewater treatment step reaction barrel, settling tank, and the tank in the pH meter monitoring. OPR instrument wholesale | Baicheng Technology (certified) | OPR hundred meter provided by Changzhou Technology Limited. Changzhou one hundred Technology Limited (www.czbckj.com) Jiangsu Changzhou, chemical instrumentation leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In one hundred as a technological leader with the staff warmly welcome all inquiries negotiations to create one hundred to a better future technology.