Abstract: discusses the design of long-distance information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Abstract: in recent years, along with a spate of high-rise residential area, residential water meter of the meter reading billing problem, also from the original manual meter reading gradually transition to the remote automatic meter reading, it is necessary for the development of the information age. It not only reduce the meter reading staff. More flow meter manufacturers choose model price quote you are welcome to inquire, here is discusses the design of long-distance article details. In recent years as a spate of high-rise residential area, residential water meter of the meter reading billing problem, also from the original manual meter reading gradually transition to the remote automatic meter reading, it is necessary for the development of the information age. This not only reduce the labor intensity of meter reading staff, improve the efficiency of meter reading, and saves the cost of artificial meter reading, promote the development of property management level. In recent years as a spate of high-rise residential area, residential water meter of the meter reading billing problem, also from the original manual meter reading gradually transition to the remote automatic meter reading, it is necessary for the development of the information age. This not only reduce the labor intensity of meter reading staff, improve the efficiency of meter reading, and saves the cost of artificial meter reading, promote the development of property management level. 1. System principle, provide an overview of the base table with sensors at work a pulse signals, the pulse signal transmission through the network information into the computer for data storage, transformation, processing, we can get the base table real-time accurate readings. A remote transmission system, therefore, can is made up of two parts, part * is the base table with sensors, the second part is the network processing equipment. The former is the basis of the whole system is stable and reliable work, the latter is the embodiment of the power system, complement each other, be short of one cannot. 2. System design general requirements 1) Choose system should be accurate measurement, stable and reliable running, easy and convenient maintenance advanced and mature technology. 2) Intelligence, before the formal use long-distance must test, test qualified rear can put into use. Test time is generally not less than 1 year. 3) The structure of the intelligent remote water meter should be integrated, with the sensor devices should not interfere with the mechanical indicating device of counting and reading, which does not affect the measurement precision of mechanical watch, and reading. 4) The accumulation of intelligent remote meter flow should be based on mechanical counting base table cumulative flow numerical, rather than electronic reading values. 5) Intelligent remote meter electronic counting signal form the cumulative flow numerical and mechanical counting error should be between the cumulative flow numerical & le; ± 1 m3, for mechanical and electrical switch parts quality is not qualified. 6) Used in the area for the unit concentrated meter reading way, far make private copies form error rate of the system should be & le; 2. Success rate of 00%, the meter reading should be & ge; 99%, otherwise choose system is unqualified. 3. 3 system design specification. 1 base table technical requirements: the length of the base table, end thread or the flange connections, pressure loss and the technical parameters of the flow should comply with the national standard GB/T778 - 1996 the correlative stipulation in the cold water meter, and has a precision grade B above. Base table should have a manufacturer's name or registered trade mark and the product name, model. 3. 2 sensor technology requirements: sensor is smart the zui key part of long-distance water meter, is the selection and use of key parts. （ 1) Sensor according to the signal conversion method can be divided into: 1, the real-time conversion type: the sensor signal components of electromechanical conversion units generally continuous movement constantly produce mechanical and electrical switching signal. , direct reading type 2: this kind of sensor electromechanical conversion unit in the far make private copies table directly from the base table of mechanical indicating device reads the cumulative flow signal. （ 2) The service life of the sensor should be & ge; 7 years. （ 3) In the selection and use of appropriate priority choose direct reading type sensor. （ 4) Sensor should have good anti electromagnetic fields, such as radiation, water hammer interference ability. In electrostatic discharge, radio frequency electromagnetic radiation, and electrical transient bursts, electrostatic field and surge ( Impact) Such as electromagnetic interference environment, the sensor should not be damaged, data processing and storage capabilities of sensor data should not be lost memory. （ 5) In dry, low temperature, damp and hot climate conditions, the sensor should not be damaged, data processing and storage, should not be lost memory data, and can work normally. In addition, should prevent rain, prevent bask in ability. （ 6) Sensor signal wire 1 meter long and sets of stainless steel hose protection should be reserved, connect to an external signal lines should be used within the terminal block and crimping terminal.
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