Yokogawa AXF flow meter current output 4.04 ma
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When the flow rate is 0, the on-site instrument shows 0, but when measured with a multimeter, there is a current of 4.04 mA. How can this current be reduced to 4 mA or below? It doesn’t help to turn off the flow at low levels; it’s also useless to set the value to 4 mA at low flow rates, and resetting it to 0 doesn’t work either. I’m not sure what will happen if a very low flow rate is used to reset it to 0
It’s been replaced; it’s not a problem with the multimeter!
If the flow meter is functioning properly, set the small-signal cut-off percentage to a slightly higher value
Your flow rate shows 0, and the reading on site is also 0. You can use a HART connection to view the specific data inside. If you find that 4.04 mA is not acceptable, you can either disable the low-flow signal or perform zero-point calibration; however, even after zero-point calibration, there will still be slight changes in current flow, and it’s impossible for it to stay at 4 mA
There’s absolutely no problem with yours; the normal output current is 4 milliamps, and there are also some variations in the device’s output. Your value of 4.04 milliamps falls within the acceptable range, so there’s no issue at all.
Check the manual: zero it out when the tube is full. If that doesn’t work, look for a zeroing knob. If that still doesn’t work, replace the circuit board