Emerson mass flow meter
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I have an Emerson mass flow meter installed, and its flow rate when it is working properly should be between 1500–1600 kg/h. Recently, the flow rate has suddenly dropped from 1500 to 560 kg/h; after about half a minute, it returns to 1500 kg/h. No fault codes were detected on the meter during on-site inspection, and there was little vibration at the site. Could the experts please help analyze what’s going on?
Is the actual flow rate of the medium inside the pipeline changing due to the control of the nearby control valve?
Why not check what the actual traffic volume is? Looking at external factors, most flow meters experience problems due to objective reasons; very few actually get damaged.
Upon checking the trends, no significant changes were observed
Could you please provide information on the medium being used and the state of the material?
The ProLink software can be installed on a computer to establish a 485 communication connection with the flow meter, allowing for the monitoring of historical trends of other parameters
This post was last edited by chensf123 on 2018-10-22 at 21:11. We have a Yokogawa electromagnetic flowmeter whose excitation winding insulation has degraded, causing the flow rate to drop from 1100 m3/h to just over 300 m3/h. The domestically produced flow meter in the water system also experienced significant fluctuations from time to time, and these issues were not resolved in the end; the manufacturer attributed them to problems with the piping system (vortices/bubbles forming in the shut-off valve on the flow meter’s bypass line). For the fluctuations in the mass flow meter in question, it is recommended to investigate possible causes such as vibration or interference.
There is a gas-phase phenomenon; turn it off before reaching the cutoff point, then turn it on again to flush it out
Without any evidence, what’s the point of analyzing anything? It’s just random guessing and nonsense... I’m just joining in the fun here; the flow meter must be acting crazy, some kind of sporadic neurological issue. . . Guessing again: the flow meter is in heat; its lower body is in trouble, and it can’t control itself. I’m warning you – find it a girlfriend to keep it busy!
1 It may be due to an increase in air bubbles in the medium. 2 Check whether the connection wires (plugs) between the sensor and the signal board are loose. 3 If possible, use the replacement method to determine whether the problem lies with the sensor or the transmitter; Emerson’s manual provides detailed instructions for troubleshooting sensor faults.