Why is the temperature sensor of the E+H vortex flow meter always broken?
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The vortex flow meter used in the boiler room to measure steam starts giving error code 394 after some time of use, showing a temperature of 20 degrees. Several probes have been replaced, but the problem persists. E+H officials say it’s caused by too high a steam flow rate – is that the reason? Have you ever encountered this situation?
Could it be that the high steam temperature caused damage to the probe?
Following with interest; looking forward to the experts’ replies
I guess the fast steam flow rate is what caused the temperature probe to fail. If possible, weld a sleeve onto the steam pipeline and install a platinum resistor (I’m not sure whether the vortex flow meter uses a platinum resistor signal); by feeding the signal from this platinum resistor into the vortex flow transmitter, it won’t keep breaking down.
Feel that knowledge can be learned; will keep following :)
The E+H vortex flow meter has high-temperature resistance! The results will be better; I wonder if a high-temperature resistant version should be used on-site!
What fault does error code 394 represent? The original poster can check this in the user manual.
Check the material information; materials can be changed if conditions permit. I’m mainly checking whether an increase in flow rate could lead to resonance; could you please tell me where the flow meter is installed?
The E+H vortex flow meters used in our factory for measuring steam also often experience such problems. The manufacturer’s explanation is that the water remaining in the pipes was not completely removed when steam was introduced, but the vortex flow meters from Rosemount and Yokogawa that we use have never had such issues.
The vortex flowmeters from E+H are suitable for use under normal room-temperature conditions; they should not be used for measuring steam, and those with temperature and pressure compensation are even less appropriate. The more functions integrated, the less stable the device becomes, and many of these products actually use temperature and pressure compensation as a selling point. . . This selling point is a bit misleading!
Based on the error code you provided, I had someone check it, and it’s a problem with the DSC sensor – a malfunction of the sensor. I can’t go into more details; it’s possible that the part of the DCS or some other upstream system used to receive the vortex flow signals is damaged. If it’s high-temperature steam, make sure not to place the sensor too close to the pipes. If possible, get a good quality vortex flow meter and try connecting it to see what happens. From my experience, with any meter from a reputable manufacturer, if it needs to be replaced frequently, there must be issues with the installation or the upstream system, or the selection of the meter itself was incorrect. In other words, under normal use, if a watch factory’s products broke down so frequently, the factory would have closed down long ago·····