Henan Airlines Traffic Instrument Co., Ltd. electromagnetic flowmeter 
 [Installation] 

 1, the measured medium must be conductive liquids, shall be filled with pipes, no air bubbles; 
 2, when installed, the flow direction of the measured medium and the flow meter indicate direction of flow in line; 
 3, must ensure that the front 5DN behind 3DN straight pipe sections (DN pass through); 
 4, the flow meter as much as possible to avoid to become a negative pressure within the measuring tube, as far as possible to avoid vibration, surrounding the place of corrosive gases and other harsh installation environment; 
 5, the flow meter should be to avoid ferromagnetic objects and equipment (such as large motors, large transformers, etc.) have a strong electromagnetic field, so as not to affect the sensor magnetic field and the flow rate signal; 
 6, in order to facilitate the maintenance at the recommended flow meter installation, install the bypass pipeline; 
 7, when the flowmeter is installed at high altitude or underground, they should set aside adequate installation and commissioning and maintenance of space to make the corresponding move to another according to different protection levels; 
 8, should fully understand the characteristics of the measured media corrosion properties, and flow meter, to prevent corroded flowmeter; 
 9, the sensor adjacent pipe welding or flame cutting, to take quarantine measures to prevent the lining, and must confirm that the instrument converter signal cable is not connected to prevent damage to the converter; 

 [Use requirements 
 1, the flowmeter must be grounded. Flowmeter converter, the sensor must be grounded to maintain the same earth potential and pipeline potential, plastic or insulated lined pipelines, grounding rings or grounding electrodes must be installed to achieve the fluid ground; 
 2 corresponds to the terminal is properly connected, and give power supply according to flowmeters different power requirements, so as to avoid strong currents burn flowmeter; to control the pressure in the pipeline is to ensure that the medium is uniform, so as not to affect the flow of normal display; 
 3, the level of installation make the electrode axis parallel to the horizon, not in the perpendicular to the horizon at the bottom of the electrode susceptible to sediment cover, the top electrode susceptible to liquid dual deposit bubbles grazed cover the electrode surface, so that the output signal fluctuations; 
 4, for the solid-liquid two-phase fluid, preferably mounted vertically, so that the sensor linings wear evenly and prolong life. 

 [Maintenance requirements] 
 1, do flowmeter rain, dust, sunscreen and other protective measures; 
 2, flow meter maintenance cycle is generally six months, maintenance cleaning, you should check the sensor lining material is damaged, the electrode is damaged by sediments cover and clean; 
 3, flow meter at the factory before you did the calibration is not recommended non-technical staff to modify the instrument parameters; 
 4, flow meters, when not in use, should be cleaned sensor lining, plus the meter external protective sleeve to prevent grime to enter, and then placed in a dry place to save. 

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 Contact: Zhang Ling 15,236,456,068