What are the power supply methods for electromagnetic flowmeters?

Case introduction

Electromagnetic flowmeter has become one of the flowmeters used to measure medium flow in chemical enterprises. As long as the liquid has a certain conductivity, electromagnetic flowmeter can be used to measure flow. As a flowmeter measurement tool with excellent performance, electromagnetic flowmeter It is most widely used in conductive liquids such as water, sewage, sulfuric acid, and ammonia. Electromagnetic flowmeters are different from volumetric flowmeters. The operation of electromagnetic flowmeters depends on the supply of electricity. According to different working conditions, there are currently three main power supply methods for flowmeters, namely 220V AC power supply and 24V DC power supply.

Powered by batteries (mainly high-performance lithium batteries). 1. 220V power supply. Electromagnetic flowmeters are currently most widely used. Generally, industrial sites have 220V power supplies. As long as the flowmeter is installed according to the requirements, there is no need to configure other devices and it can work after being powered on. The 220V power supply electromagnetic flowmeter can be made into an integrated type or a split type. 2. 24V power supply electromagnetic flowmeter is mainly used in industrial sites where AC power is not allowed or low-voltage DC power is used for safety reasons, or it is equipped with a flow totalizer and the totalizer supplies power to the electromagnetic flowmeter. Only 24V batteries can be selected. For power supply, electromagnetic flowmeters are not widely used at present, and are mainly used when there is no power supply at some sites.

At the same time, it also has a fault alarm function, upper and lower flow setting and alarm functions, forward and reverse flow switching functions, and 485 communication function. In addition to the diversity of power supply methods, electromagnetic flowmeters also have powerful internal functions. They can be used to measure the flow rate of liquid media, the forward flow rate and reverse phase flow rate of the medium, and the instantaneous flow rate and cumulative flow rate. It can be made into two types: one-piece type and split type, depending on the customer's requirements. 3. Battery power supply is used when there is no external power supply on site, or when the site is for safety reasons, it can display instantaneous flow and accumulated flow on site, which can save the cost of dragging the power supply. This battery power supply method is particularly important in remote environments. The main disadvantage is that the battery needs to be checked and replaced regularly.