Selection of steam pipeline flow meters
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In chain steam boilers, which domestic flow meter with temperature and pressure compensation is better – one that can perform such compensation and provides both instantaneous/accumulated flow measurements? Previously, vortex flow meters/PT100 thermistors were used; under conditions of significant load variations, the PT100s tended to fail frequently. Is there a better way to address this issue?
In cases of significant load variations, vibrations may occur, leading to damage to the PT100. Try the heat exchange thermocouple
Use a flow nozzle, and that’s also what the process package requires.
The usual approach is to use a flow nozzle, a differential transformer, and an intelligent flow integrator; for measuring steam temperature, K-type and E-type sheathed thermocouples are commonly used.
Our company uses standard orifice plates combined with differential transformers for settlement, along with temperature and pressure compensation; the data is then fed into Beijing Bosida’s flowcomputer intelligent flow accumulation device for calculation. I wonder if the thermistor you are using is armored? If the armored type is prone to damage, you can try using the armored thermocouple recommended by your classmates.
After considering the opinions and suggestions above, regarding flow nozzles, orifice plates, cone flow meters, or vortex flow meters, which of these options offers the best cost-performance ratio? And which one is superior in terms of maintainability? The PT100 sensors that were used in the past were not armored; perhaps switching to armored versions would yield better results. This could be tried out in future projects. Last edited by wwk0909 on 2008-1-22 17:27.]