| HT-3000 automatic controller is a high-new technology product, especially designed for electric control of CLO2 producer. This controller mainly controls temperature of CLO2 producer's reactor, and controls frequency of metering pumps. The CLO2 producer with HT-3000 automatic controller is a equipment that produces CLO2 gas chemically, it's key technology is controlling temperature of reactor and producing CLO2 in proportion of water flow through setting frequency to metering pumps. HT-3000 automatic controller has two following main functions: One is automatically controlling temperature of CLO2 producer's reactor by measuring the reactor's water temperature using Pt100 thermo resistant and comparing the reference temperature, the other is setting frequency to metering pumps by measuring water flow. The method of control temperature is FUZZY-PID, this control method can obtain the flowing advantages: temperature rising rapidly, and can eliminate steady error by PID control at the moment of constant temperature. In addition, this controller is added function to obtain close-loop control by measuring CLO2 content of sterilized water to control surplus age CLO2. HT-3000 automatic controller has been designed two ways of signal transportation. One is RS-485 serial communication, this controller has two serial ports of RS-485, adopting MODBUS agreement. The others is transmitting on-off signal for no computer. At the same time, this controller can also inspect and display sixteen work states, such as lacking water, lacking material, not enough pressure, failure alarming and so on. Now this controller has been already designed and produced successfully, its specimen machine is being in tryout moment. |