Many sewage treatment plants need to use flowmeters to display the flow rate. However, they always encounter some problems when selecting a flowmeter. In the following, in the sewage industry, the problems to be paid attention to when using electromagnetic flowmeters.
The choice of flowmeter is mainly based on the user's site conditions. There are two general methods of wastewater, one is through the pipeline and the other is through the trench. The two types of flowmeters used are different.
Wastewater is used for pipeline discharge. Most electromagnetic flowmeters are used for measurement. Since there is no barrier in the sensor, there is no fear of debris in the medium, but it must be noted that the medium must be full. Pipeline, to ensure that the flowmeter is full, pay attention to the flowmeter can not be installed at the drain of the pipeline, the length of the straight section of the pipe should meet the requirements of the flowmeter.
Wastewater is used for drains. Most of them use ultrasonic open channel flowmeters. A measuring slot is installed at the outlet and an ultrasonic probe is installed directly above the slot. This can measure the flow of wastewater flowing through. This instrument generally uses 24V power supply and output : 4-20MA.
When selecting the electromagnetic flowmeter for waste water, you should know the parameters such as medium temperature, medium pressure, medium flow range, medium composition, power supply requirements, and on-site installation requirements. The type selection focus is on what product is selected for measurement, followed by installation operation and maintenance. Convenient, and finally consider the appropriate price, so that you can choose a cost-effective product.