There are many types of electromagnetic flowmeters, which can be divided into pipe-type electromagnetic flowmeters and insertion-type electromagnetic flowmeters according to different installation methods.
Among them, the insertion-type electromagnetic flowmeter has a simple structure and is convenient for maintenance, and is widely used in industry. All walks of production.
Criteria for selecting the maximum flow rate of the plug-in electromagnetic flowmeter
1. Generally, the pipe diameter of the selected smart transmitter is the same as the diameter of the connected pipeline. Since there is a strict functional relationship between pipe diameter, flow velocity and flow rate, you can refer to the electromagnetic flowmeter limit flow table provided by the manufacturer when selecting, and select the limit flow value under the matching pipe diameter.
2. Because the flow rate in the process piping is slightly lower for a while and cannot reach the minimum flow rate value under the matching pipe diameter in "1", you can choose a smart transmitter with a pipe diameter lower than the processing pipe diameter. The pipe diameter of the process pipeline is to add eccentric reducers on the front, rear, left and right of the smart transmitter.
Other selection criteria for plug-in electromagnetic flowmeters
The lining should be selected by the orderer based on the corrosion, abrasion and ambient temperature of the material to be measured by the company. Please refer to each manufacturer. The "Table of Performance and Application Fields of Lining Materials" is presented. The selection of battery materials should be based on the corrosion of the company's substances to be tested and selected by the orderer. You can refer to the "Battery Material Corrosion Resistance Performance Table" provided by each manufacturer. The waterproof grade should be selected according to the national standard gb. The shell protection grade is: if the instrument is installed below the ground and is often flooded, it is better to choose the deep submersible type; if the instrument is installed on the ground, it is better to choose the sprinkler-proof type. When selecting a plug-in electromagnetic flowmeter, the selection criteria for model specifications, specifications, total flow limit, lining, electrode material and waterproof level should be strictly followed.
Specification selection criteria for plug-in electromagnetic flowmeters
1. The specifications of the selected sensor are the same as those of the connected process pipeline, which is characterized by easy assembly; the premise is that the liquid in the pipe The flow speed must be within the range of 0.3m/s-10m/s; it can be used in early stage applications and the flow speed of the liquid in the pipe is extremely low.
2. The specifications of the selected plug-in electromagnetic flowmeter are different from the specifications of the connected process pipeline. Its availability is: ⑴ The flow rate is slightly lower and the flow is stable; ⑵ The reduction is cost-effective.
Hangzhou Economic Development Area，Hangzhou 310018，China
