Issues in flow meter selection????????
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Our company’s wastewater treatment channels previously used ultrasonic open-channel flow meters, but they were extremely inaccurate and prone to errors; their performance varied depending on whether it was raining or sunny. We now want to choose a different type of meter. Please help us with this.
Is yours closed or open? Normally, there is a difference between rainy days and sunny days – rainwater will flow into the drainage channels on rainy days, so it’s normal to see a difference in the readings.
We use Bacheller cells, which are also ultrasonic, and they have been working stably for 5 years now. No major problems arose. SIEMENS is used for the probes and intelligent transmitters. The flow rate is between 2,000 and 3,000 cubic meters per hour.
Our traffic volume is very low; it doesn’t exceed 20 T per hour. It’s not an open system, so there’s no issue with water accumulation from rain. Moreover, there’s a rotameter in front of it.
Why not try electromagnetism? It’s very stable.
For those who support the fifth floor, if cost is not a concern, it is recommended to use electromagnetic options – they are very stable and durable.
It’s also ultrasonic. It’s better to use electromagnets for pipes! ~`
Electromagnetic flowmeters are supported, though they seem to be a bit more expensive
Electromagnetic ones should be much cheaper than ultrasonic ones, right? Why do people upstairs say that electromagnetic ones are expensive?
I’m also a beginner. Flow meters such as ultrasonic and thermal types are prone to being affected by environmental conditions. If budget permits, I would recommend Emerson’s flow meters, those based on the Coriolis principle, which utilize gravity and are not affected by external environments.