A magnetic flow meter is a type of an effluent flow meter that consists of no
movable parts. It is ideal for measuring effluents or wastewater and other conductive
liquids. The waste water flow meter is a wastewater flow measuring devices for measuring the volume flow of various conductive fluids or liquid - solid
medium in a pipe. It is widely used in metallurgical, papermaking, water
conservancy, environmental protection, printing and dyeing, oil, coal and other
industrial fields. It can be used to measure volume flow of various acid,
alkali and salt solution, slurry, pulp, paper pulp, coal water slurry, slurry,
pulp fiber, corn syrup, milk of lime, sewage, drainage, hydrogen peroxide,
beer, wort, various beverages and other conductive liquid medium.In
other words, it is a transducer that records the flow of liquid by measuring
the voltage produced across the liquid when it flows through a magnetic field.
The flow meter for effluent water typically gets comprised of a transmitter and a sensor that works
together to measure the flow. The magnetic flow sensor gets to measure the
induced voltage as the liquid passes through a pipe. The magnetic flow transmitter,
on the other hand, takes the voltage generated as a result of liquid flow and
converts it into a measurement, which is, in turn, transmitted to a centralized
control system. To capture such flow measurement, we need to understand the
workings behind such a flow meter.
Going by Faraday's law, the flow of the conductive liquid through the magnetic field causes a voltage signal to be registered. Such signals get captured by sensors on the walls of the flow tube. The voltage generated is subject to the velocity of the flowing fluid. The transmitter captures the voltage signal and processes it to determine the liquid flow.
The wastewater flow measuring devices is famous in its usage due to its attributes. We explore the reasons why its application is vast.
All electromagnetic flow meter operates based on Faraday's law, which highlights the relationship between a moving conductor (fluid) and the resultant voltage created. When choosing a specifying type of wastewater flow meter, the following considerations are key;
Media conductivity, cost, accuracy, velocity of the flow, and the ease of use. Other factors such as hazardous environments, size and capacity, and pipe design are also integral specifications to consider.
When the flow meter is installed, the axis of the measuring electrode must be similar to the horizontal direction, and the measuring pipe should be full of liquid. There should be no strong electromagnetic field near the flow meter with plenty of space for installation and maintenance. If the measuring pipe has vibration, there should be a fixed support on both sides of the flow meter. The distance between the mixing point and the flow meter should be at least 30 D (D is the inner diameter of flow meter) for measuring the mixing liquid of different media. In order to facilitate the cleaning and maintenance of the flow meter in the future, the bypass pipe should be installed. When installing the flow meter of PTEF lining, the bolts connecting two flanges should be properly tightened, or the PTEF lining is crushed easily. And we'd better use torque wrench.
There are a lot sewage flow meters
factories to produce magnetic flow meters. Such as ABB,Kronhe, Yokogawa, Siemens.etc.
But Silver Automation Instruments supply cheap and robust waste water magnetic
flow meters for customers as top brand economical replacement.