12. The digital circuit device. Including computers, PBX, Automatic control systems for on-site controller. Since the switching process of an electronic circuit may cause a fast pulse current changes, the spectrum from tens of hertz to several hundred megahertz are present. 13. The pipeline stray current. The main protection against electromagnetic flowmeter is well grounded, grounding resistance is usually less than the 100q, not shared with other motors and electrical grounding. Sometimes better environmental conditions, electromagnetic flowmeter is not grounded can work smart electromagnetic flowmeter price, but even so we think or prepare the ground properly. Because once the good environmental conditions exist, the instrument is faulty, then will affect the use, and then make various checks to bring a lot of trouble. Sometimes though electromagnetic flowmeter is well grounded, due to pipeline stray current is too strong (such as electrolytic process pipeline cathodic protection and pipe network) effects of electromagnetic flow measurement normal juice, shall be electrically insulated from electromagnetic flow sensor with the pipeline at this time isolation. ① medium excitation cable can be used YZ rubber cables, the same as the length of the signal cable ② signal cables and other power supply cables must be strictly separated, the same can not be laid at a tube, can not be laid parallel electromagnetic flowmeter intelligent distribution, can not twist together, should be worn separately inside the pipe. ③ signal cable and excitation cable as short as possible intelligent electromagnetic flowmeter picture, you can not roll with excess cable should be cut off excess cable and re-welding head, the electrical interface cable into the sensor, a U at the ports type, which can prevent rainwater infiltration into the sensor. ④ sub-field electromagnetic flowmeter body connection cable and converter with special wiring is completed between the converter and external connections to the same body electromagnetic flowmeter. Intelligent electromagnetic flowmeter measuring sales force since the instrument _ _ Hebei intelligent electromagnetic flowmeter measurements provided by the Shanghai Automation Instrumentation Co., Ltd .. Shanghai Automation Instrumentation Co., force measurement (www.licesh.com) is the Shanghai Zhabei District, flow meters leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Since the force measuring device leadership with the staff warmly welcome all inquiries negotiations to create the force measuring instrument since a better future.