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How To Properly Maintain Vortex Flowmeter
Feb 27, 2017

How to properly maintain vortex flowmeter

1)  Vortex flowmeter instrument is not suitable for installation in the  case of strong vibration is widely known to the user, but the frequent  changes in the magnetic field, the vortex flow sensor will be measured  higher than the normal value of the signal output. It  has been shown that in the absence of gas flow, when the vortex flow  sensor is in a changing magnetic field, the vortex flowmeter sensor  senses an erroneous signal and outputs it. When the change is over, the  instrument is in a stable Magnetic field, the instrument will output a normal signal.
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2) Coke oven gas due to the factory temperature is high, humidity, so there will be water in the process of transport there. The gas flow drives the water back and forth to form a pulsating flow. Vortex flow sensor in this state when the output of the data suddenly  large and small control, simply can not reflect the production  situation.
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3)  As the coke oven gas and more impurities, easy to crystallization,  impurities in the sensor head, resulting in measurement misalignment. When  the temperature rises, the impurities evaporate, the sensitivity  increases, the signal is enhanced, and on the contrary decreases. Resulting in data instability.
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4) instrument wiring process is not true pressure line, resulting in the transmission process of the signal intermittent.
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5) instrument grounding line does not meet the specifications, so that  the strong power of 50Hz interference into the normal signal is higher  than 50Hz when the normal output signal, otherwise it will output the  wrong signal.
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 Solution:
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1)  During the installation and connection of the instrument, it is  necessary to ensure that every link is accurate, including the  inspection of the site before installation, the instrument wiring in the  installation process, the system grounding line, etc., so as to ensure  that the real Data and can be accurately output.
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2) For the running measurement system can be used "double gui  measurement and control engineering network copyright, contrast  confirmation" method, and "alternative" on the operation of the  measurement instrument failure to confirm and exclude.
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3)  on a regular basis for the overall cleaning of the instrument, if  necessary, the sensor part of the sensor head to purge, to avoid  impurities in the sensor head of the condensation. The cold season in the measurement of straight pipe and the instrument  part of the heating device is also conducive to ease the impurities in  the measurement instrument at the condensation.
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4) regular drainage of the pipeline, in particular, straight pipe  before the water, according to the specific circumstances of the person  set up regular discharge, as far as possible to reduce the water in the  measurement section, the maximum exclusion of fluid in the pulse.
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5) to strengthen the vortex flow meter measurement system data  management, set the timing print function, according to the print data  combined with the production status of the instrument to run the  analysis.