是抢占科技战略制高点的必然途径：虽然我国已向国外购买了大批的科学仪器，但真正的核心技术是买不来的，尤其是涉及军事、纳米、生命科学等领域的具有战略意义的科学仪器，发达国家一直对我国进行封锁。 The electromagnetic flowmeter is an inevitable way to seize the commanding heights of scientific and technological strategies: Although China has purchased a large number of scientific instruments from abroad, the real core technology cannot be bought, especially in military, nano, and life science fields. Developed scientific instruments, developed countries have been blocking our country. For example, after the outbreak of SARS, China intends to establish a biosafety p4 laboratory, and its core instruments will blockade China. Another example is that wind tunnels have a very important role in the fields of national defense, railways, bridges, and other core instruments. China has always imposed blockades; for example, electromagnetic flowmeters are necessary measuring instruments for ultra-high-precision measurement and processing. They are produced in only a few countries, but all of them are prohibited from exporting to China. In order to completely break the technological blockade in developed countries, strengthen independent research and development of the core technology of scientific instruments, and actively strive to develop high-tech scientific instruments with independent intellectual property rights, effectively avoiding "subject to people", is an important measure to seize the commanding heights of scientific and technological strategies.
在使用时注意的事项： 液体应具有测量所需的电导率，并要求电导率分布大体上均匀。 Matters needing attention when using the electromagnetic flowmeter : The liquid should have the conductivity required for measurement, and the conductivity distribution should be generally uniform. Therefore, the electromagnetic flowmeter flow sensor should be installed to avoid the place where the conductivity is uneven. For example, if the liquid is added near the upstream, the liquid adding point is preferably located downstream of the flowmeter sensor. The sensor measuring tube must be filled with liquid during use (except for non-full tube type). When mixed, its distribution should be substantially uniform. The liquid should be at the same potential as the ground and must be grounded. For example, when insulating materials such as plastics are used for process pipelines, frictional static electricity is generated during transportation of the liquid, which causes a potential difference between the liquid and the ground.
现场显示有波动的故障解决 Solving the electromagnetic flowmeter's on-site display with fluctuations
a. Installation location (the highest end of the pipe).
b. Whether there is interference in the surroundings (inverter, ensure that the power supply of the inverter and the flowmeter are not the same power supply; large motors, crossover or overlap, the mobile phone transmission tower does not interfere with the flowmeter)
d. Non-metallic pipes are not grounded
f. Power frequency interference
H. Impact on the computer.
1. If it is installed at the highest end, an exhaust valve can be installed at the inlet to exhaust the gas;
2. Separate the power supply and change it again
3. For non-metallic pipes, a grounding ring must be provided to ensure that the medium is in full contact with the housing