How many wires do the integrated electromagnetic flowmeter need to connect?

Case introduction

The electromagnetic flowmeter requires two wires, one of which is connected to the current output signal, and the other is connected to the ground wire.

1. The wiring method of electromagnetic flowmeter

The electromagnetic flowmeter needs to be connected to the power supply and display instrument. There are generally three wiring methods:

1. Three wires Method

The three-wire method is a more commonly used wiring method for electromagnetic flowmeters. The principle is to connect the red, black, and white wires respectively. The red wire is connected to the voltage output signal, the black wire is connected to the current output signal, and the white wire is connected to the ground wire.

2. Four-wire method

The four-wire method is somewhat similar to the three-wire method. The wiring method is to add three wires and a shielded wire, red, black, and white. The three-wire connection method is the same as the three-wire method, and the shielded wire is used for noise reduction and is connected to the instrument case.

3. Two-wire method

The two-wire method is a relatively simple wiring method. The principle is to connect the red and black wires to the current output signal and ground respectively. Wire. This wiring method requires the conductivity of the measurement medium to be higher than a certain value, otherwise the measurement accuracy will be affected.

2. How many wires does the electromagnetic flowmeter require?

Normally, the electromagnetic flowmeter only requires two wires to complete the wiring. One of the wires is connected to the current output signal and the other wire is connected to the ground wire. However, some special occasions require the use of three or four wires for wiring, and the best wiring method can be selected according to the specific situation.

In short, the wiring method of the electromagnetic flowmeter has a great impact on the accuracy of measurement and the service life of the instrument. It needs to be selected and matched according to the specific situation.