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1. What do the letters in exdiaq Ⅱ ct6 represent for the explosion-proof level of an electromagnetic flowmeter?
Ex represents explosion-proof, d represents flameproof, ia represents intrinsic safety, q represents sand filled, IIC represents gas explosion-proof IIC level (hazardous areas with hydrogen, corrosive acetylene, and carbon disulfide), where T6 is the temperature group, indicating that the maximum surface temperature of the equipment does not exceed 85 ℃. From Nanyang Zhongtian Explosion proof
2. Installation precautions for explosion-proof electromagnetic flowmeter
Installation precautions for explosion-proof electromagnetic flowmeter:
1. Installation direction and position: The axis direction of the non measuring electrode must be approximately horizontal to ensure the stability and measurement accuracy of the flowmeter. Fluid flow direction: The flow direction of the fluid must be consistent with the direction of the arrow on the flowmeter to avoid reverse flow causing damage to the flowmeter or affecting measurement accuracy.
Secondly, the measuring pipeline requires liquid to fill the pipeline: the measuring pipeline must be completely filled with liquid to avoid the influence of gas or cavities on the measurement results.
. Straight pipe section length: There should be at least a 5D (D is the inner diameter of the flowmeter) straight pipe section in front of the flowmeter, and a 3D straight pipe section at the back to ensure the stability of fluid flow and improve measurement accuracy.III. Avoid vacuum in the pipeline environment: Vacuum in the pipeline can damage the lining of the flowmeter, so special attention should be paid to avoiding negative pressure
3. Explosion proof flowmeter Introduction to explosion-proof electromagnetic flowmeter
Explosion proof electromagnetic flowmeter provides a rectangular wave magnetic field by using constant current low-frequency three value rectangular wave or dual frequency rectangular wave excitation, effectively avoiding the errors caused by sinusoidal magnetic field. At the same time, it has excellent zero stability and is not affected by fluid noise interference, ensuring its high stability and reliability.
. The measurement principl